JP2013203347A - Upper vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an upper vehicle body structure that can secure side impact resistance while suppressing vehicle body deformation upon side impact.SOLUTION: In an upper vehicle body structure 1, one end E1 of a roof reinforcement 4 is arranged at a position where a center pillar 5 of a first roof side rail 2 is connected, and also coupled to the center pillar 5 through a gusset 6, and the other end E2 of the roof reinforcement 4 is arranged at a position corresponding to a door opening of a second roof reinforcement 3. The other end E2 of the roof reinforcement 4 is provided with a joint portion 9 joined to a second roof side rail 3, a projection portion 10 which is formed projecting outward in a vehicle width direction and not joined to the second roof side rail 3, and a cut portion 11 which is formed apart from the second side rail 3 between the joint portion 9 and projection portion 10.

Description

  The present invention relates to a vehicle body superstructure.

  As for the vehicle body upper structure, various structures for improving rigidity and other side collision performance have been proposed. For example, Patent Document 1 discloses a vehicle body upper structure that is installed between a pair of roof side rails and has roof reinforcements, and both ends of the roof reinforcements are connected to center pillars via gussets, respectively, thereby causing side collision performance. What has been improved is disclosed.

JP 2009-298335 A

  By the way, in recent years, a vehicle type has been produced in which a center pillar is provided only on one side of a vehicle body and a door opening is formed large without providing a center pillar on the other side. In such a vehicle type, both ends of the roof reinforcement cannot be connected to the center pillar as in the conventional vehicle body superstructure, and there is room for improvement in the side collision performance.

  Therefore, an object of the present invention is to provide a vehicle body upper structure capable of ensuring side collision performance while suppressing vehicle body deformation at the time of a side collision.

  In order to solve the above problems, the present invention provides a vehicle body upper structure having a roof reinforcement constructed between a first roof side rail and a second roof side rail, wherein one end of the roof reinforcement is The first roof side rail is disposed at a position where the pillar is connected, and is connected to the pillar via a connecting member. The other end of the roof reinforcement is connected to the door opening of the second roof side rail. It is arranged at the corresponding position, and the other end of the roof reinforcement is formed with a joint portion joined to the second roof side rail and protruding outward in the vehicle width direction, and joined to the second roof side rail. Not formed and a notch formed so as to be separated from the second roof side rail between the joint portion and the overhang portion. And parts, are provided, characterized in that.

  According to the vehicle body superstructure, when the roof reinforcement transmits the load received by the pillar due to a side collision with the vehicle body, the overhanging portion on the other side of the roof reinforcement interferes with the second roof side rail. The load can be transmitted efficiently. In addition, at the other end of the roof reinforcement, the joint and the overhanging part move independently due to the formation of the notch, so that all the load of the overhanging part is not transmitted to the joint and the shearing force applied to the joint is reduced. Can do. Moreover, even if a moment arises to bend the roof reinforcement with different load input balances in the longitudinal direction of the vehicle body, it can be controlled by the notch portion, so the burden on the joint portion can be reduced while suppressing vehicle body deformation. . Therefore, according to the vehicle body superstructure, the side collision performance can be ensured while suppressing the vehicle body deformation at the time of the side collision.

  In the vehicle body superstructure, the joint portion includes a first joint portion and a second joint portion that are positioned so as to sandwich the overhang portion, and the notch portion is formed between the overhang portion and the first joint portion. You may have the made 1st notch part and the 2nd notch part formed between the overhang | projection part and the 2nd junction part.

  According to the vehicle body superstructure, the first joint and the second joint are positioned so as to sandwich the projecting portion, so that the other end of the roof reinforcement is joined to the second roof side rail in a balanced manner. This is advantageous in improving the side impact performance. In addition, by providing the first cutout portion and the second cutout portion, it is possible to suppress the deformation of the vehicle body by applying a moment more effectively.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle body upper structure which can ensure side collision performance can be provided, suppressing the vehicle body deformation | transformation at the time of a side collision.

It is a perspective view which shows the one end side of the roof reinforcement of the vehicle body upper structure which concerns on this embodiment. It is a perspective view which shows the other end side of the roof reinforcement of the vehicle body superstructure which concerns on this embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the longitudinal direction of the vehicle body is shown as the X-axis direction, the vehicle width direction of the vehicle body is shown as the Y-axis direction, and the height direction (vertical direction) of the vehicle body is shown as the Z-axis direction.

  The vehicle body upper structure 1 according to the present embodiment is a structure of an upper part of a vehicle cabin. The vehicle body upper structure 1 according to this embodiment is applied to a vehicle having a left-right asymmetric structure in which a center pillar is provided only on one side of the vehicle body and a center pillar is not provided on the other side. Specifically, there is an automobile in which a center pillar is provided only on the driver's seat side of the vehicle body and a door opening having a size from the passenger seat to the rear seat is formed without providing a center pillar on the passenger seat side.

  As shown in FIGS. 1 and 2, the vehicle body superstructure 1 includes a first roof side rail 2 and a second roof side rail 3 disposed on both sides of the vehicle body upper portion, and a first roof side rail 2. And a roof reinforcement 4 installed between the second roof side rails 3.

  The first roof side rail 2 shown in FIG. 1 is a hollow member that is disposed on the driver's seat side of the vehicle body, and is composed of an inner panel 2A and an outer panel 2B that extend in the vehicle longitudinal direction (X-axis direction). is there.

  An upper end of a center pillar 5 extending in the vertical direction (Z-axis direction) is joined to the first roof side rail 2. The center pillar 5 is a hollow column member composed of a pillar inner panel 5A and a pillar outer panel 5B, and a lower end thereof is joined to a side sill (not shown).

  The first roof side rail 2 is connected to one end E1 of a roof reinforcement 4 extending in the vehicle width direction (Y-axis direction). The roof reinforcement 4 is a long member having a W-shaped cross section opened upward. A roof panel (not shown) is disposed on the roof reinforcement 4.

  The first roof side rail 2 has an edge 2a that protrudes toward the passenger compartment side in the vehicle width direction. The edge portion 2 a is formed along the first roof side rail 2. One end E1 of the roof reinforcement 4 is joined to the edge 2a. One end E1 of the roof reinforcement 4 and the edge 2a of the first roof side rail 2 are joined by spot welding.

  Further, one end E1 of the roof reinforcement 4 is arranged at a position where the center pillar 5 is provided in the first roof side rail 2 in the longitudinal direction of the vehicle body. One end E <b> 1 side of the roof reinforcement 4 and the center pillar 5 are connected by an L-shaped gusset (connecting member) 6.

  Specifically, the L-shaped gusset 6 is fixed to the lower surface of the roof reinforcement 4 by bolts 7 and is fixed to the surface of the pillar inner panel 5 </ b> A of the center pillar 5 by bolts 8. Bolts 7 are arranged in bolt long holes (long holes extending in the vehicle width direction) formed in the gusset 6 so that the roof reinforcement 4 can be adapted to displacement in the vehicle width direction due to a side collision with the vehicle body. It is configured.

  The second roof side rail 3 shown in FIG. 2 is disposed on the passenger seat side of the vehicle body, and is a hollow member configured by combining an inner panel (not shown) and an outer panel 3A extending in the vehicle front-rear direction. It is. The second roof side rail 3 has an edge 3a that protrudes toward the passenger compartment side in the vehicle width direction. The edge 3 a is formed along the second roof side rail 3.

  The center roof is not connected to the second roof side rail 3 on the passenger seat side, and a door opening having a size from the passenger seat to the rear seat is formed with the second roof side rail 3 as an upper edge. Yes. For example, a sliding door is attached to the door opening.

  The other end E2 of the roof reinforcement 4 extending in the vehicle width direction is connected to the second roof side rail 3. The other end E <b> 2 of the roof reinforcement 4 is provided with a joint portion 9, an overhang portion 10, and a notch portion 11.

  The joint portion 9 is a portion connected to the second roof side rail 3 in the other end E <b> 2 of the roof reinforcement 4. The joint portion 9 is fixed to the edge portion 3a of the second roof side rail 3 by spot welding. The joint portion 9 includes a first joint portion 12 located at the front end portion of the vehicle body and the second joint portion 13 located at the rear end portion of the vehicle body, of the other end E2 of the roof reinforcement 4. ing.

  The overhang portion 10 is a portion of the other end E2 of the roof reinforcement 4 that is formed to project outward in the vehicle width direction, and is located at the center of the other end E2 in the vehicle longitudinal direction. That is, the overhang portion 10 is positioned so as to be sandwiched between the first joint portion 12 and the second joint portion 13.

  The overhanging portion 10 overhangs on the edge 3 a of the second roof side rail 3, but is not directly joined to the second roof side rail 3. The overhanging portion 10 is disposed so as to be movable with respect to the second roof side rail 3. The overhanging portion 10 may be configured to be sandwiched in the vertical direction by the edge portion 3a of the second roof side rail 3 and a roof panel (not shown).

  The notch 11 is a part formed so as to be separated from the second roof side rail 3. The notch 11 includes a first notch 14 formed between the first joint 12 and the overhang 10, and a second notch formed between the second joint 13 and the overhang 10. And a notch 15.

  According to the vehicle body superstructure 1 according to the present embodiment described above, when the roof reinforcement 4 transmits the load received by the center pillar 5 due to the side collision to the vehicle body, the roof reinforcement 4 on the other end E2 side is transmitted. The overhanging portion 10 interferes with the second roof side rail 3 so that the load can be transmitted efficiently.

  Moreover, on the other end E2 side of the roof reinforcement 4, since the joint portion 9 and the overhang portion 10 move independently due to the formation of the notch portion 11, all the load of the overhang portion 10 is not transmitted to the joint portion 9, The shear force applied to the joint 9 can be reduced.

  Further, even when a moment (for example, a moment indicated by an arrow A) that causes a difference in load input in the longitudinal direction of the vehicle body to bend and the roof reinforcement 4 is bent, a part of the roof reinforcement 4 is seated. Since deformation due to bending or the like is prevented from increasing the load input to the joint 9, the burden on the joint 9 can be reduced while suppressing deformation of the vehicle body. Therefore, according to the vehicle body superstructure 1, the side collision performance can be ensured while suppressing the vehicle body deformation at the time of the side collision.

  Further, in the vehicle body superstructure 1, the first joint portion 12 and the second joint portion 13 are positioned so as to sandwich the projecting portion 10, so that the roof reinforcement 4 and the other parts of the roof reinforcement 4 are arranged. The end E2 can be joined in a balanced manner, which is advantageous for improving the side collision performance. Further, by providing the first cutout portion 14 and the second cutout portion 15, it is possible to suppress the deformation of the vehicle body by applying a moment for bending the roof reinforcement 4 more effectively.

  The present invention is not limited to the embodiment described above. For example, the shape of the roof side rail and the roof reinforcement is not limited to those described above, and various known shapes can be employed. Similarly, the center pillar and the gusset are not limited to the shapes described above. The connection structure of the center pillar and the gusset is not limited to that described above, and various structures can be employed.

  Further, the shape and position of the joint portion, the overhang portion, and the cutout portion at the other end of the roof reinforcement are not limited to those described above. Furthermore, the number of joints and notches may be one, or three or more.

  DESCRIPTION OF SYMBOLS 1 ... Car body upper structure 2 ... 1st roof side rail 2A ... Inner panel 2B ... Outer panel 2a ... Edge part 3 ... Second roof side rail 3A ... Outer panel 3a ... Edge part 4 ... Roof reinforcement 5 ... Center pillar 5A ... Pillar inner panel 5B ... Pillar outer panel 6 ... Gazette (connecting member) 9 ... Joint part 10 ... Overhang part 11 ... Notch part 12 ... First joint part 13 ... Second joint part 14 ... First notch part 15 ... second notch E1 ... one end of roof reinforcement E2 ... other end of roof reinforcement

Claims (2)

A vehicle body upper structure having a roof reinforcement constructed between a first roof side rail and a second roof side rail,
One end of the roof reinforcement is disposed at a position where the pillar is connected in the first roof side rail, and is connected to the pillar via a connecting member,
The other end of the roof reinforcement is disposed at a position corresponding to the door opening in the second roof side rail,
On the other end of the roof reinforcement,
A joint joined to the second roof side rail;
A projecting portion that is formed to project outward in the vehicle width direction and is not joined to the second roof side rail;
A vehicle body upper structure characterized in that a notch portion formed so as to be separated from the second roof side rail is provided between the joint portion and the projecting portion. The joint has a first joint and a second joint located so as to sandwich the overhang,
The cutout portion includes a first cutout portion formed between the overhang portion and the first joint portion, and a second cutout formed between the overhang portion and the second joint portion. The vehicle body superstructure according to claim 1, further comprising a notch.

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