JP2008037318A - Vehicle body upper part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body upper part structure capable of enhancing occupant protection performance at turn-over of a vehicle by controlling a folding mode of a roof at the turn-over of the vehicle. <P>SOLUTION: A recessed groove 26 is formed near an end 22A in a longitudinal direction of a roof center reinforce 22, and a distal end 28C of a connection pin 28 is further mounted to an inner side. A head part 28A of the connection pin 28 is engaged with an opposed portion near an end 24A at an outer side in a vehicle width direction of a roof head lining 24. Accordingly, at the turn-over of the vehicle, the roof center reinforce 22 and a roof panel 14 are bend to an outer side of a cabin 12 making the recessed groove 26 made to low rigidity as an origin, it is pulled by the connection pin 28 accompanying with it, and the recessed groove opposed portion 24B of the roof head lining is also bent in the same direction. As a result, contact with a head of the occupant can be avoided or relaxed, and the occupant protection performance can be enhanced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle body upper structure configured to include a roof body that constitutes an upper part of a vehicle body, and a ceiling interior material that is spaced apart from the roof body on the vehicle lower side.

  Japanese Patent Application Laid-Open Publication No. 2004-228561 discloses a technique for suppressing the deformation of the roof when the vehicle is overturned.

Briefly, in the technique disclosed in Patent Document 1, the first reinforcing member that connects the upper end of the left front pillar and the upper end of the right center pillar in a curved shape to the roof panel, and the right front pillar A second reinforcing member that connects the upper end portion and the upper end portion of the left center pillar in a curved shape is arranged so as to cross the center portion. Thereby, the bending moment which generate | occur | produces in the part which a 1st reinforcement member and a 2nd reinforcement member cross | intersect is canceled.
JP 2005-263019 A

  However, according to the above prior art, there is room for improvement in the points described below.

  That is, in recent years, vehicles with a low roof position tend to be put on the market for design reasons. On the other hand, in recent years, an increasing number of vehicles have mounting parts such as a head protection airbag device in which airbags are inflated and deployed in the form of curtains in the vicinity of sunroofs and side collisions in the vicinity of the roof, including roofs. Tend to.

  For this reason, there are naturally cases where the roof structure as in the prior art cannot be adopted. In that case, the roof and the window frame may be deformed when the vehicle is overturned, or the ceiling, the sunroof, or the like may be pushed out and contact the occupant.

  An object of the present invention is to obtain a vehicle body superstructure capable of improving the occupant protection performance during vehicle overturning by controlling the folding mode of the roof during vehicle overturning in consideration of the above facts.

  The invention according to claim 1 is a vehicle body upper structure including a roof body that constitutes an upper part of the vehicle body, and a ceiling interior material that is spaced apart from the vehicle body of the roof body, and the roof A load greater than or equal to a predetermined value is input from the roof side rail side to the cabin side at a predetermined position on the roof side rail side in the roof structure member spanned along the vehicle width direction on the lower surface side of the main body or the roof main body. In this way, a fragile portion for bending the roof main body or the roof skeleton member toward the outside of the cabin is provided.

  According to a second aspect of the present invention, in the vehicle body upper structure according to the first aspect, the roof body or the roof structure member includes a portion near the weakened portion and a ceiling interior material or a ceiling side mounting member attached to the ceiling interior material. It is characterized by having a connecting member that is connected in a substantially vertical direction of the vehicle.

  According to a third aspect of the present invention, in the vehicle body superstructure according to the second aspect, the connecting member is deformable in a load acting direction when a load of a predetermined value or more is input.

  According to the first aspect of the present invention, when a vehicle rolls over due to rollover or the like, a load on the cabin side is input near the end of the roof body constituting the upper part of the vehicle body in the vehicle width direction (on the roof side rail side). Is done. When the input load is equal to or greater than a predetermined value, the roof main body or the roof skeleton member spanned along the vehicle width direction on the lower surface side of the roof main body from the weakened portion set at a predetermined position on the roof side rail side. Bent (deforms to bend). Since the bent portion of the roof body or the roof structural member is displaced (swells) to the outside of the cabin due to the bending at this time, a new space is formed inside the bent portion. Therefore, it is possible to avoid or alleviate the occupant's head from coming into contact with the body side structural member such as the roof main body or the roof structural member. That is, according to the present invention, it is possible to avoid or reduce the occupant's head from receiving reaction force from these members by controlling the folding mode of the roof or the roof frame member.

  According to the second aspect of the present invention, the portion of the roof body or the roof structure member in the vicinity of the fragile portion and the ceiling interior material or the ceiling side mounting member attached to the ceiling interior material are substantially vertically moved by the connecting member. When the roof main body or the roof structural member is bent starting from the fragile portion, when the ceiling interior material and the ceiling side mounting member are installed, the ceiling side mounting member is connected to the roof main body or the roof by the connecting member. It is pulled in the deformation direction of the structural member. Therefore, the ceiling interior material or the ceiling side mounting member is also deformed in the same deformation mode as the roof main body or the roof structure member, and it is possible to avoid or alleviate the occupant's head coming into contact with the ceiling interior material or the ceiling side mounting member. it can.

  According to the third aspect of the present invention, since the connecting member can be deformed in the load acting direction when a load of a predetermined value or more is input, the roof main body or the roof structural member, the ceiling interior material, and the ceiling When the side mounting member is deformed in the planned deformation mode and the head of the occupant is still in contact with the ceiling interior material or the ceiling side mounting member, the connecting member is deformed in the load acting direction, thereby Energy is absorbed.

  As described above, the vehicle body superstructure according to the first aspect of the present invention has an excellent effect that the occupant protection performance at the time of vehicle overturning can be improved by controlling the folding mode of the roof at the time of vehicle overturning. Have

  The vehicle body superstructure according to the second aspect of the present invention sets not only the body side structural member such as the roof main body or the roof frame member but also the interior side structural element such as the ceiling interior material or the ceiling side mounting member in the same folding mode. By this, it has the outstanding effect that the passenger | crew protection performance at the time of vehicle overturning can be improved further.

  In the vehicle body superstructure according to the third aspect of the present invention, since the connecting member is configured to be deformable, it has an excellent effect that the occupant protection performance can be further improved when the vehicle is overturned.

[First Embodiment]
Hereinafter, a first embodiment of a vehicle body superstructure according to the present invention will be described with reference to FIGS. It should be noted that an arrow FR appropriately shown in these drawings indicates the vehicle front side, an arrow UP indicates the vehicle upper side, an arrow IN indicates the vehicle width direction inner side, and an arrow OUT indicates the vehicle width direction outer side. Is shown.

  FIG. 1 shows a state in which a vehicle body upper portion 10 to which a vehicle body upper structure according to the present invention is applied is cut along the vehicle width direction. As shown in this figure, a roof panel 14 as a roof body is disposed on the outermost side of the upper body 10 constituting the upper end of the cabin 12. Roof side rails 16 are disposed on both sides of the roof panel 14 along the vehicle longitudinal direction. Note that the roof side rail 16 has a closed cross-section structure by a roof side rail outer panel 18 and a roof side rail inner panel 20, and a flange portion 16A located on the inner side in the vehicle width direction of the roof panel 14 in the vehicle width direction. The outer end portion 14A (the end portion thereof) is joined by spot welding.

  A roof center reinforcement 22 as a roof structural member extends along the vehicle width direction on the lower side of the roof panel 14 near the middle portion in the vehicle front-rear direction. The roof center reinforcement 22 is configured as a long member formed in a cross-sectional hat shape, and is attached by bonding front and rear flange portions (not shown) to the lower surface of the roof panel 14 with a mastic. In FIG. 1, the bottom of the roof center reinforcement 22 is shown. Further, the end portion 22A (the terminal portion thereof) in the longitudinal direction of the roof center reinforcement 22 is joined to the roof side rail inner panel 20 by spot welding. In addition, in this 1st Embodiment, although the roof center reinforcement 22 was comprised as an elongate member of a cross-sectional hat shape, it may be a belt-plate-like thing like 2nd Embodiment mentioned later, Further, it may be pipe-shaped or rod-shaped, and the structure and cross-sectional shape of the roof structure member to be applied are appropriately changed according to the required characteristics required for the roof structure member.

  Further, a roof head lining (also referred to as a molded ceiling or interior trim) 24 as a ceiling interior material is disposed substantially parallel to the vehicle lower side than the roof center reinforcement 22. As an example, the roof head lining 24 includes a base material layer and a skin layer coated on the base material layer.

  Here, on the lower surface in the vicinity of the end portion 22A in the longitudinal direction of the roof center reinforcement 22 described above, a concave groove 26 as a fragile portion is formed along the vehicle longitudinal direction. Accordingly, the plate thickness of the roof center reinforcement 22 is thin at the portion where the concave groove 26 is formed, and the rigidity is reduced compared to the general portion 22B of the roof center reinforcement 22.

  Further, the vicinity (inner side in the vehicle width direction) of the concave groove 26 of the roof center reinforcement 22 (hereinafter referred to as “concave groove vicinity portion 22C”) and the vicinity of the end 24A of the roof head lining 24 in the vehicle width direction outside. (Hereinafter referred to as “concave groove facing portion 24B”) is connected in the vehicle vertical direction by a connecting pin 28 as a connecting member.

  The connecting pin 28 includes a head portion 28A, a shaft portion 28B disposed at the shaft core portion, and a spherical tip portion 28C formed at the tip portion of the shaft portion 28B. A connecting pin insertion hole 30 is formed in the roof head lining 24, the connecting pin 28 is inserted into the connection pin insertion hole 30 from the lower side of the roof head lining 24, and the tip 28 </ b> C is a concave groove of the roof center reinforcement 22. It is attached by welding or the like to the vicinity portion 22C. Instead of the connecting pin 28, a clip or the like may be used.

  A front header reinforcement extending along the vehicle width direction on the lower surface side of the front end portion of the roof panel 14 (not shown in the first embodiment, but is shown in the second embodiment to be described later). , See there) is also added with the same configuration.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  As shown in FIG. 3, when the vehicle 32 rolls over, a load F is input from the roof side rail 16 corresponding to the upper corner of the vehicle 32 (the portion indicated by the arrow Q in FIG. 3) toward the cabin 12. . Note that the load F in this case is, for example, a load input from the road surface 34 or the like.

  Here, in the vehicle body superstructure according to the present embodiment, the concave groove 26 is set as a fragile portion (or a low-rigidity portion) in the vicinity of the end portion 22A in the longitudinal direction of the roof center reinforcement 22. If the load F is equal to or greater than a predetermined value, as shown in FIG. 2, the end 22A in the longitudinal direction of the roof center reinforcement 22 is bent toward the cabin 12 starting from a concave groove 26 whose rigidity changes suddenly. In response to this bending behavior, the end 14A of the roof panel 14 on the outer side in the vehicle width direction is also bent toward the cabin 12 side.

  Since the concave groove vicinity portion 22C of the roof center reinforcement 22 and the concave groove facing portion 24B of the roof head lining 24 are connected to each other by the connecting pin 28, the end portion 22A in the longitudinal direction of the roof center reinforcement 22 as described above. Is bent outward of the cabin 12, the head portion 28 </ b> A of the connecting pin 28 is forcibly pulled in the vehicle width direction outer end 24 </ b> A of the roof head lining 24 in the same direction. For this reason, the end 24 </ b> A of the roof head lining 24 on the outer side in the vehicle width direction is also bent outward of the cabin 12 in the same manner as the end 22 </ b> A of the roof center reinforcement 22 in the longitudinal direction.

  As a result, a new space S (an area indicated by a two-dot chain line in FIG. 2) is formed inside the bent portion of the cabin 12, and the cabin 12 is expanded. Therefore, it is possible to avoid or relieve the occupant's head (indicated by arrow P in FIG. 2) from coming into contact with the body-side components such as the roof center reinforcement 22 and the roof panel 14 with the roof head lining 24 therebetween. it can. That is, according to the vehicle body superstructure according to the present embodiment, the occupant's head receives a reaction force from these members by controlling the folding mode of the roof center reinforcement 22 and the roof panel 14 when the vehicle rolls over. Can be avoided or reduced. As a result, according to the present embodiment, it is possible to improve the occupant (head) protection performance when the vehicle is overturned.

  In the vehicle body superstructure according to the present embodiment, as described above, the connecting pin 28 connects the groove vicinity portion 22C of the roof center reinforcement 22 and the groove facing portion 24B of the roof head lining 24 to connect the roof center reinforcement 22 to each other. The end portion 24A on the outer side in the vehicle width direction of the roof head lining 24 is also bent using the bending operation of the end portion 22A in the longitudinal direction, so that the occupant's head P contacts the roof head lining 24. It is also possible to avoid or alleviate reaction force due to contact. Therefore, according to the present embodiment, it is possible to further improve the occupant (head) protection performance when the vehicle is overturned.

[Second Embodiment]
Next, a second embodiment of the vehicle body superstructure according to the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 4, in the second embodiment, a bead 40 as a fragile portion extending along the vehicle front-rear direction is formed in the vicinity of the end 14 </ b> A on the outer side in the vehicle width direction of the roof panel 14. . The bead 40 has a substantially U-shaped cross section.

  Further, the end 42A in the longitudinal direction of the strip-shaped front header reinforcement 42 disposed below the longitudinal end 41A of the roof center reinforcement 41 and the front end of the roof panel 14 is opposed to the bead 40. Another bead 44 is formed at the position. The cross-sectional shape of the bead 44 is also substantially U-shaped upside down.

  Further, the end 24A on the outer side in the vehicle width direction of the roof head lining 24, the bead vicinity part 41B of the roof center reinforcement 41 and the bead vicinity part 42B of the longitudinal end part 42A of the front header reinforcement 42 are connected to the vehicle by a connecting pin 46. It is connected in the vertical direction. Note that the connecting pin 46 of the second embodiment sets a weld nut on the upper surface of the bead vicinity portion 41B of the roof center reinforcement 41 and the bead vicinity portion 42B of the end portion 42A in the longitudinal direction of the front header reinforcement 42, for example. If so, bolts can be used, and rivets can also be used.

(Action / Effect)
Also with the above configuration, the same operations and effects as those of the first embodiment described above can be obtained. That is, when the vehicle rolls over, the end 41A in the longitudinal direction of the roof center reinforcement 41 and the end 42A in the longitudinal direction of the front header reinforcement 42 are folded to the outside of the cabin 12 from the bead 44, and the roof panel 14 also starts from the bead 40. As shown in FIG. That is, the folding mode of the roof panel 14, the roof center reinforcement 22 and the front header reinforcement 42 can be controlled. As a result, it is possible to improve the occupant (head) protection performance when the vehicle is overturned.

[Third Embodiment]
Next, a third embodiment of the vehicle body superstructure according to the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5A, the third embodiment is characterized in that a weakened portion (low-rigidity portion) is provided on the connecting pin 50. Specifically, the connecting pin 50 is similar to the connecting pin 28 of the first embodiment described above in that the connecting pin 50 includes a head 50A, a shaft portion 50B, and a tip portion 50C. This is different from the connection pin 28 of the first embodiment described above in that a reduced diameter portion 52 having a reduced diameter is formed. By forming the reduced diameter portion 52, the connecting pin 50 has a reduced rigidity at the portion where the reduced diameter portion 52 is formed.

(Action / Effect)
According to the above configuration, when the vehicle rolls over from the state shown in FIG. 5A, as shown in FIG. 5B, the roof center undergoes the same process as described in the first embodiment. The end 22A in the longitudinal direction of the reinforcement 22 and the end 14A on the outer side in the vehicle width direction of the roof panel 14 are bent with the concave groove 26 as a starting point. Accordingly, the end 24 </ b> A on the outer side in the vehicle width direction of the roof head lining 24 connected by the connecting pin 50 is also pulled by the head 50 </ b> A of the connecting pin 50 and bent toward the outside of the cabin 12. As a result, a space S is formed in the upper corner of the cabin 12, and the occupant's head (arrow P) abuts against the longitudinal end portion 22A of the roof center reinforcement 22 via the roof head lining 24 to generate a reaction force. It can be avoided or reduced.

  Further, in this embodiment, since the reduced diameter portion 52 is provided in the axial direction intermediate portion of the shaft portion 50B of the connecting pin 50, it is assumed that the head of the occupant has come into contact with the head 50A of the connecting pin 50. However, as shown in FIG. 5C, the connecting pin 50 is bent at the reduced diameter portion 52 to absorb energy, and the roof head lining 24 is easily deformed to the outside of the cabin 12 (FIG. 5C). The roof head lining 24 is easily deformed and moved from the position indicated by the two-dot chain line to the position indicated by the solid line). As a result, according to the present embodiment, it is possible to further improve the occupant (head) protection performance when the vehicle is overturned.

  In the above configuration, the diameter-reduced portion 52 is formed at the intermediate portion in the axial direction of the shaft portion 50B of the connecting pin 50. However, the present invention is not limited to this, and a load of a predetermined value or more is input in the axial direction of the connecting pin 50. Any structure may be used as long as it has a function of suppressing or suppressing the occurrence of a load with a bottom. For example, the connection pin 50 may be contracted in the axial direction by making the connection pin 50 into a double tube structure and inputting an axial force of a predetermined value or more. Moreover, in the said structure, although the axial part 50B of the connection pin 50 is drawn so that it may be bent and divided from the diameter-reduced part 52, you may make it just bend so that it may not be divided. For example, the connecting pin may be divided into two in advance, and the divided end portions may be connected with a hinge pin so as to be relatively rotatable.

[Supplementary explanation of this embodiment]
In each of the above-described embodiments, the connecting pins 28, 46, and 50 are set. However, the present invention according to claim 1 includes a configuration in which no connecting pin exists. Even in this case, the function and effect of bending the roof center reinforcement 22 and the roof panel 14 which are the body side constituent members to the outside of the cabin 12 can be obtained, so that the occupant (head) protection performance is improved.

  In each of the above-described embodiments, the connection partner of the connection pins 28, 46, and 50 is the roof head lining 24 that is a ceiling interior material. However, the present invention is not limited to this, and the ceiling side mounting member that is attached to the roof head lining 24. It may be.

It is a cross-sectional view which shows the whole structure of the vehicle body upper structure which concerns on 1st Embodiment in the state before a deformation | transformation. It is a cross-sectional view which shows the state which the roof panel etc. deform | transformed at the time of vehicle overturn from the state shown by FIG. It is a schematic front view which shows the vehicle which rolled down. It is a disassembled perspective view which shows the vehicle body upper structure which concerns on 2nd Embodiment. It is a cross-sectional view showing a vehicle body upper structure according to a third embodiment, (A) is a state before deformation, (B) is a state where a roof panel or the like is deformed, (C) is a state where a connecting pin is further broken. Each is shown.

Explanation of symbols

10 Upper body 12 Cabin 14 Roof panel (roof body)
14A End in the vehicle width direction 16 Roof side rail 22 Roof center reinforcement (roof structural member)
22A Longitudinal end 22C Concave groove vicinity part (near fragile part)
24 Roof head lining (ceiling interior material)
24A End in the vehicle width direction 26 Groove (fragile part)
28 Connecting Pin (Connecting Member)
32 Vehicle 40 Bead (fragile part)
41 Roof center reinforcement (roof structural members)
41A Longitudinal end portion 41B Bead vicinity 42 Front header reinforcement (roof structure member)
42A Longitudinal end 42B Near-bead part 44 Bead (fragile part)
46 Connecting pin (connecting member)
50 Connecting pin (connecting member)
52 Reduced diameter section

Claims (3)

A roof body constituting the upper part of the vehicle body,
A ceiling interior material that is spaced apart on the vehicle lower side of the roof body;
A vehicle body superstructure configured to include
A load greater than or equal to a predetermined value is applied from the roof side rail side to the cabin side at a predetermined position on the roof side rail side of the roof main body or a roof structure member spanned along the vehicle width direction on the lower surface side of the roof main body. Provided with a weakened portion that bends the roof body or roof skeleton member toward the outside of the cabin by being input,
Body superstructure characterized by that. Provided a connecting member for connecting the vicinity of the weak part in the roof main body or the roof structural member and the ceiling interior material or the ceiling side mounting member attached to the ceiling interior material in the vehicle vertical direction.
The vehicle body superstructure according to claim 1, comprising: The connecting member can be deformed in a load acting direction by inputting a load of a predetermined value or more.
The vehicle body superstructure according to claim 2.

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