JP5565685B2 - Vehicle side body structure - Google Patents

Description

  The present invention relates to a side body structure, and more particularly to a side body structure of a vehicle provided with a seat belt guide of a seat belt device.

The seat belt device for a four-door / sedan type vehicle includes, as constituent members, a retractor that winds up a rear seat belt, and a seat belt guide that guides and supports an intermediate position of the seat belt that is fed upward from the retractor. The retractor and the seat belt guide are provided on the side of the passenger compartment in order to hold the occupant's body by the seat belt. And when attaching such a retractor and a seat belt guide to a side part vehicle body, the exclusive bracket was welded and fixed to the wheel house inner panel or rear pillar inner panel of the vehicle body side.
However, in such a side body structure in which a dedicated bracket is provided for mounting a retractor or a seat belt guide, the number of parts and the number of mounting work steps are increased by the amount of the bracket, which may increase the cost in the future. . In addition, since there is little correlation between the bracket and the surrounding vehicle body constituent members, there is a problem that it is difficult to disperse and support the load applied from the seat belt to the retractor or the seat belt guide.

For this reason, in the conventional side body structure, as disclosed in Patent Document 1, the end of the wheel house inner panel is joined to the rear pillar inner panel, and a link bracket that supports the suspension link is provided inside the wheel house inner panel. The end of the link bracket is fixed between the joint portion of the rear pillar inner panel and the wheel house inner panel, and the end of the link bracket is further extended from the fixed portion to the vehicle compartment side to be mounted on the retractor mounting portion. The structure is adopted.

JP-A-6-1265

In such a side body structure, when a load is applied to the seat belt, the quarter inner panel is directed toward the front of the vehicle due to the load applied to the front of the vehicle at the bolt mounting portion (suspension portion) of the mounting bolt for mounting the seat belt guide. Distorted and deformed. At this time, if only the quarter inner panel is distorted and deformed in front of the vehicle, the load is not distributed, and the sufficient deformation cannot be absorbed by the deformation of the panel exceeding the limit, and the occupant's holding force by the seat belt becomes insufficient. There was a fear.
Further, in the side body structure of Patent Document 1 described above, in order to distribute the load when a load is applied to the seat belt, the side housing reinforcement is joined to the quarter inner panel, and after the side housing reinforcement. The edge is welded and joined together with the quarter inner panel and the quarter outer panel in a three-ply manner. However, since the side housing reinforcement is not directly joined to the side brace or package junction, the load distribution to the peripheral members is not sufficient, and the load from the seat belt cannot be absorbed efficiently. There was a problem.

  The present invention has been made in view of such a situation, and the object thereof is to disperse the load from the seat belt to the peripheral members of the quarter inner panel, and to prevent only the quarter inner panel from being deformed. An object of the present invention is to provide a side body structure of a vehicle capable of efficiently absorbing a load from a belt.

In order to solve the above-described problems of the prior art, the present invention provides a four-door sedan type vehicle that includes a quarter inner panel and a quarter outer panel and is provided with a seat belt guide that guides and supports an intermediate position of a rear seat belt. In the side body structure,
A quarter inner reinforcement is joined to the outside of the quarter inner panel, and a bolt mounting portion of a mounting bolt for mounting the seat belt guide is provided on the quarter inner panel where the quarter inner reinforcement is located, A partition panel to be joined to the quarter inner panel is disposed below the quarter inner reinforcement, a rear portion of the quarter inner reinforcement is joined to a rear side of the quarter outer panel, and the quarter inner panel is joined. A lean reinforcement is joined to the partition panel, and the quarter inner reinforcement is provided with a bead extending downward from the position of the bolt mounting portion .

  Further, in the present invention, a flange extending downward from the position of the bolt mounting portion is provided on a side portion extending along the vertical direction of the quarter inner reinforcement.

  In the present invention, the front portion of the quarter inner reinforcement extends toward the front of the vehicle and is joined to the front edge of the quarter outer panel.

As described above, the side body structure of the vehicle according to the present invention is a four-door sedan type that includes a quarter inner panel and a quarter outer panel, and is provided with a seat belt guide that guides and supports an intermediate position of the rear seat belt. A quarter inner reinforcement is joined to the outside of the quarter inner panel, and a bolt mounting portion of a mounting bolt for mounting the seat belt guide is provided on the quarter inner panel where the quarter inner reinforcement is located. A partition panel to be joined to the quarter inner panel is disposed below the quarter inner reinforcement, and a rear part of the quarter inner reinforcement is joined to a rear side of the quarter outer panel; The quar Motor inner reinforcement is joined to the partition panel, the quota is an inner reinforcement, since the bead that extends downward from the position of the bolt mounting portion is provided, a load from the seat belt While being able to disperse | distribute, the load from a seatbelt can be absorbed efficiently. In particular, in the side body structure of the present invention, it is possible to distribute the load to the rigid member that forms the skeleton in the width direction of the vehicle body by joining the quarter inner reinforcement and the partition panel, and to absorb the load from the seat belt. The performance can be improved.
Further, in the side body structure of the present invention, it becomes possible to reduce the bending deformation of the quarter inner reinforcement due to the load from the seat belt, and the load from the seat belt can be reliably applied to the rear part and the partition panel of the quarter outer panel. I can tell you. That is, after the load from the seat belt is received by the quarter inner panel and the quarter inner reinforcement, the load can be distributed to the partition panel by the quarter inner reinforcement. This is important for fully exerting the function of the seat belt, because if the quarter inner reinforcement is easily broken, the deformation becomes large and the position of the bolt mounting portion moves greatly.

  Furthermore, in the present invention, the side portion extending along the vertical direction of the quarter inner reinforcement is provided with a flange extending downward from the position of the bolt mounting portion. Almost the same effect can be obtained.

  In the present invention, since the front portion of the quarter inner reinforcement is extended toward the front of the vehicle and joined to the front edge of the quarter outer panel, the quarter inner reinforcement extends over the front and rear of the quarter panel. The load can be distributed and the load distribution can be promoted, the deformation of the corner portion of the rear door opening can be reduced, and the door can be opened after the load is applied.

It is a perspective view which shows a part of vehicle body of the back side part seen from the vehicle interior side of the vehicle to which the side part vehicle body structure which concerns on embodiment of this invention is applied. It is a perspective view which expands and shows the X section in FIG. It is the sectional view on the AA line in FIG. 1 is a perspective view showing a quarter inner reinforcement viewed from the vehicle interior side in a side body structure according to an embodiment of the present invention. FIGS. 2A and 2B show a side body structure according to a modification of the embodiment of the present invention, in which FIG. 1A is an enlarged perspective view of a portion X in FIG. 1, and FIG. 2B is an enlarged sectional view of a portion Y in FIG. .

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
1 to 4 show a side body structure of a vehicle according to an embodiment of the present invention.

The vehicle according to the embodiment of the present invention is a four-door sedan type automobile equipped with a seat belt device 1 for holding a rear seat occupant, as shown in FIGS. The partial vehicle body structure includes a quarter inner panel 2, a quarter outer panel 3, a rear pillar panel 4, and a wheel house inner panel 5 that constitute a vehicle body on the side of the vehicle by extending along the longitudinal direction and the vertical direction of the vehicle. .
The seat belt device 1 includes a retractor 7 that winds up a rear seat belt 6, and a seat belt guide 8 that guides and supports an intermediate position of the rear seat belt 6 that is drawn upward from the retractor 7, and the retractor 7 and the seat belt guide. Reference numeral 8 is provided on the side body of the passenger compartment in order to hold the occupant's body by the rear seat belt 6.

  A quarter inner reinforcement 9 that extends and bends in the width direction and the vertical direction of the vehicle is joined and arranged outside the position of the quarter inner panel 2 on the vehicle rear side. The quarter inner panel 2 in which the quarter inner reinforcement 9 is located is provided with a bolt mounting portion (suspension portion) 11 of a mounting bolt 10 for mounting the seat belt guide 8.

  A partition panel 12 joined to the quarter inner panel 2 is disposed below the quarter inner reinforcement 9 of the present embodiment, as shown in FIGS. 2 and 3, and this partition panel 12 is arranged in the vehicle width direction. And a front side panel 14 and a rear side panel 15 positioned in the vehicle front-rear direction on both sides in the vehicle width direction of the main panel 13. The main panel 13 is formed by being bent into a “U” shape with an intermediate portion in the vehicle front-rear direction protruding upward, and the front side panel 14 and the rear side panel 15 are arranged in a shape along the main panel 13. The overlapping portions of these panels are joined to each other. An end portion in the vehicle width direction of the rear side panel 15 of the partition panel 12 is joined to an intermediate portion in the vertical direction of the quarter inner panel 2.

Further, as shown in FIG. 3, the rear end portion 9a of the quarter inner reinforcement 9 is extended to the joint portion between the quarter inner panel 2 and the quarter outer panel 3, and the rear end portion of these quarter inner reinforcements 9 9a, quarter inner panel 2 and quarter outer panel 3 are joined together by spot welding in a state where three pieces are overlapped. In the state where the three sheets are overlapped, the rear end portion 9a of the quarter inner reinforcement 9 is disposed between the quarter outer panel 3 and the quarter inner panel 2, and is joined to the side of the rear portion of the quarter outer panel 3. Become.
Moreover, the lower end portion 9 b on the front side of the quarter inner reinforcement 9 is joined to the front side panel 14 of the partition panel 12 and the vehicle width direction end portions of the rear side panel 15.

  Further, as shown in FIGS. 2 and 4, the quarter inner reinforcement 9 of the present embodiment includes two beads 16 extending downward from the position of the horizontal central axis C of the bolt mounting portion 11. It is provided side by side. These beads 16 increase the lower rigidity of the quarter inner reinforcement 9 with respect to the load applied to the bolt mounting portion 11, have a curved shape protruding upward, and are formed with the partition panel 12 of the quarter inner reinforcement 9. It is formed toward the joint.

  Further, on the left and right sides extending along the vertical direction of the quarter inner reinforcement 9, as shown in FIG. 4, flanges extending downward from the position of the horizontal central axis C of the bolt mounting portion 11 are provided. 17 are provided. Like the beads 16, these flanges 17 increase the lower rigidity of the quarter inner reinforcement 9 with respect to the load applied to the bolt mounting portion 11, and are formed by bending downward.

  In a four-door sedan type vehicle to which a side body structure according to an embodiment of the present invention is applied, a load is applied from the front of the vehicle, the rear seat belt 6 receives the inertial load of a rear seat occupant, and a seat belt guide 8 When the bolt mounting portion 11 receives a load toward the front of the vehicle and the lower side of the vehicle, the bolt mounting portion 11 moves to the front of the vehicle. Along with this, the quarter inner panel 2 tends to be deformed. However, since the quarter inner panel 2 is joined to peripheral parts such as the quarter inner reinforcement 9, the partition panel 12 and the quarter outer panel 3, the load from the bolt mounting portion 11 can be distributed. The deformation of the inner panel 2 is reduced. In addition, since the lower rigidity of the quarter inner reinforcement 9 is improved by the presence of the bead 16 and the flange 17 extending downward from the position of the horizontal central axis C of the bolt mounting portion 11, the quarter inner lean is improved. The force 9 is restrained from being bent and deformed at the lower portion of the bolt mounting portion 11, and the load transmission to the quarter outer panel 3 and the partition panel 12 is promoted.

  As described above, in the side body structure according to the embodiment of the present invention, the quarter inner reinforcement 9 is joined to the outside of the quarter inner panel 2, and the quarter inner panel 2 where the quarter inner reinforcement 9 is located is seated. A bolt mounting portion 11 of the belt guide 8 is provided, a partition panel 12 joined to the quarter inner panel 2 is disposed below the quarter inner reinforcement 9, and a rear end portion 9a of the quarter inner reinforcement 9 is a quarter outer panel. Since the quarter inner reinforcement 9 is joined to the partition panel 12, the load from the bolt mounting portion 11 of the seat belt guide 8 can be transmitted to the vehicle body rigid member and distributed. Load from bolt mounting part 11 It can be efficiently absorbed.

  Further, in the side body structure of the present embodiment, the quarter inner reinforcement 9 is provided with the bead 16 and the flange 17 extending downward from the position of the horizontal central axis C of the bolt mounting portion 11. The lower rigidity of the quarter inner reinforcement 9 can be greatly improved, and the bending deformation of the quarter inner reinforcement 9 when a load is input from the bolt mounting portion 11 of the seat belt guide 8 to the front of the vehicle can be reduced. .

  While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

  For example, the vehicle front side of the quarter inner reinforcement 9 in the above-described embodiment is formed at a length located in the middle portion of the quarter inner panel 2 in the front-rear direction, and is indicated by a dotted line in FIG. As described above, a part of the front portion 9c of the quarter inner reinforcement 9 in the vehicle width direction is extended toward the front of the vehicle, and as shown in FIG. It may be joined to the front edge portion of the quarter outer panel 3 in a stacked state. Thereby, the distribution of the load applied to the quarter inner reinforcement 9 can be promoted.

DESCRIPTION OF SYMBOLS 1 Seat belt apparatus 2 Quarter inner panel 3 Quarter outer panel 6 Rear seat belt 7 Retractor 8 Seat belt guide 9 Quarter inner reinforcement 9a Rear end part 9b Lower end part 9c Front part 10 Mounting bolt 11 Bolt mounting part 12 Partition panel 13 Main panel 14 Front side panel 15 Rear side panel 16 Bead 17 Flange C Horizontal center axis

Claims (3)

In the side body structure of a four-door sedan type vehicle that includes a quarter inner panel and a quarter outer panel and is provided with a seat belt guide that guides and supports an intermediate position of the rear seat belt.
A quarter inner reinforcement is joined to the outside of the quarter inner panel, and a bolt mounting portion of a mounting bolt for mounting the seat belt guide is provided on the quarter inner panel where the quarter inner reinforcement is located, A partition panel to be joined to the quarter inner panel is disposed below the quarter inner reinforcement, a rear portion of the quarter inner reinforcement is joined to a rear side of the quarter outer panel, and the quarter inner panel is joined. reinforcement is bonded to the partition panel, the quota is an inner reinforcement, side of the vehicle, characterized in that the bead that extends downward from the position of the bolt mounting portion is provided Body structure. 2. The vehicle according to claim 1 , wherein a flange extending downward from a position of the bolt mounting portion is provided on a side portion extending in a vertical direction of the quarter inner reinforcement. Side car body structure. The side body of the vehicle according to claim 1 or 2, wherein a front portion of the quarter inner reinforcement is extended toward the front of the vehicle and joined to a front edge portion of the quarter outer panel. Construction.

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