JP2019196104A - Side part vehicle body structure of vehicle - Google Patents

Abstract

To provide a side part vehicle body structure of a vehicle 1 which can inhibit opening deformation in a lower part front end of a rear wheel house 6 even if a relatively large input load is applied to a rear end of a side sill 2.SOLUTION: A side part vehicle body structure of a vehicle 1 includes: a pair of left and right side sills 2; a pair of left and right rear wheel houses 6 joined to rear ends of the side sills 2; and a pair of left and right rear side panels 7. The side part vehicle body structure further includes a pair of left and right side pillars 8, each of which is disposed at the outer side of the rear side panel 7 as seen in a vehicle width direction and forms a closed cross section extending in a vehicle vertical direction along a front end edge of the rear side panel 7 forming a rear end edge of a side door opening S. The side pillar 8 includes: a protruding part 811 which protrudes to the outer side as seen in the vehicle width direction and has a substantially portal shape cross section; and a rear separation flange 83 which is provided in a substantially flange shape to a rear end of the protruding part 811 and connected to a joint portion between a wheel house inner 61 and a wheel house outer 62.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a side body structure of a vehicle including a reinforcing member that reinforces a lower front end of a rear wheel house, for example.

  As a vehicle body structure of a vehicle such as an automobile, for example, Patent Document 1 discloses a pair of left and right side sills extending in the vehicle front-rear direction at positions spaced apart in the vehicle width direction and a rear wheel of the vehicle, A pair of left and right rear wheel houses joined to the lower front end at the ends, the rear wheel house being integrally formed with a quarter panel that forms the side wall of the rear of the vehicle, and a wheel house inner joined to the quarter panel There is something that is made up of.

  Further, Patent Document 1 discloses a reinforcing member (side sill reinforcement) that is joined to the front end edge of the quarter panel that forms the rear end edge of the door opening and the wheel house outer and has a closed cross section that extends in the vehicle vertical direction. The rigidity in the vicinity of the lower front end of the rear wheel house is improved.

  By the way, in the vehicle body structure of Patent Document 1, when a relatively high input load is applied to the rear end of the side sill, the input load applied to the rear end of the side sill is reduced between the lower front end of the wheel house outer and the lower front end of the wheel house inner. It becomes easy to act as a load that releases the connection.

  At this time, since the reinforcing member of Patent Document 1 is disposed across the connecting portion between the lower front end of the wheel house outer and the lower front end of the wheel house inner, the lower front end of the wheel house outer and the lower portion of the wheel house inner are arranged. There was a problem that it was difficult to function as a means for preventing the connection with the front end from being released.

  For this reason, for example, in the vehicle body structure disclosed in Patent Document 1, when the suspension mounting portion to which the rear suspension is mounted is connected to the rear end of the side sill, the wheel house outer has a relatively high input load applied to the rear end of the side sill. The lower front end of the rear wheel house may be deformed so that the connection between the lower front end and the lower front end of the wheel house inner is released, and there is a concern that the vehicle operability is lowered.

Japanese Utility Model Publication No. 2-143370

  In view of the above-described problems, the present invention provides a vehicle body structure that can suppress opening deformation at the lower front end of a rear wheel house even when a relatively large input load is applied to the rear end of a side sill. The purpose is to do.

  The present invention includes a pair of left and right side sills extending in the vehicle front-rear direction at a predetermined interval in the vehicle width direction of the vehicle, and a pair of left and right rear wheel houses that have a lower front end joined to a rear end of the side sill and cover a rear wheel. And a vehicle body structure that includes a pair of left and right rear side panels that are joined to the side sill at a front side of the rear wheel house and that form a side wall of a rear portion of the vehicle with the rear wheel house. A closed cross-section that is disposed outside the rear side panel in the vehicle width direction and extends in the vehicle vertical direction along the front edge of the rear side panel serving as the rear edge of the side door opening covered by the side door of the vehicle A pair of left and right reinforcing members that form a ridge, and the reinforcing members protrude substantially outward in the vehicle width direction in a horizontal cross section along the vehicle width direction. And a rear flange portion that is provided in a substantially flange shape with respect to the rear end of the protruding portion, and that is connected to a joint portion of the wheel house inner and the wheel house outer that constitute the rear wheel house. It is characterized by.

According to the present invention, even when a relatively large input load is applied to the rear end of the side sill, the opening deformation at the lower front end of the rear wheel house can be suppressed.
Specifically, since the rear side panel and the reinforcing member form a closed cross section that extends in the vehicle vertical direction, the side body structure of the vehicle improves the rigidity of the rear side panel along the rear edge of the side door opening. can do.

  Furthermore, since the rear flange portion of the reinforcing member is connected to the joint portion between the wheel house inner and the wheel house outer, the side body structure of the vehicle is obtained by welding the wheel house outer and the wheel house inner. Compared to the case, the connection strength between the wheel house outer and the wheel house inner can be improved.

Thereby, the side part vehicle body structure of a vehicle can improve the mechanical strength with respect to the input load which cancels | releases connection with the lower front end of a wheel house outer, and the lower front end of a wheel house inner.
Therefore, the side body structure of the vehicle can suppress the opening deformation at the lower front end of the rear wheel house even when a relatively large input load is applied to the rear end of the side sill.

  As an aspect of the present invention, the rear flange portion of the reinforcing member extends forward of the vehicle with respect to the lower rear end of the protruding portion, and is fastened to a joint portion between the wheel house inner and the wheel house outer. May be.

According to this invention, the side body structure of the vehicle has a lower rear end of the protruding portion that is connected to the rear wheel house as compared with the case where the rear flange portion extends toward the vehicle rear side with respect to the rear end of the protruding portion. It can be easily brought close to the lower front end.
Thereby, the side body structure of the vehicle can ensure a large cross-sectional area of the closed cross section formed by the lower portion of the reinforcing member and the rear side panel in the vicinity of the lower front end of the rear wheel house.

  In addition, since the rear flange portion of the reinforcing member is fastened together with the joint portion between the wheel house inner and the wheel house outer, the vehicle side body structure has a lower front end of the wheel house inner and a lower portion of the wheel house outer. The connection strength with the front end can be further improved.

  Therefore, the side body structure of the vehicle has an opening at the lower front end of the rear wheel house even when a relatively large input load is applied to the rear end of the side sill by the rear flange portion extending forward of the vehicle. Opening deformation can be further suppressed.

  In addition, as an aspect of the present invention, a rear side door that covers a rear portion of the side door opening is provided, and the protruding portions of the reinforcing member are disposed at a predetermined interval in the vehicle vertical direction, and the rear side door is You may provide two door hinges supported so that opening and closing is possible.

According to the present invention, the side body structure of the vehicle can support the door hinge with the reinforcing member having a closed cross section with the rear side panel, so that the rear side door can be stably supported.
For this reason, the side body structure of the vehicle can suppress the increase in the number of parts, can secure the support rigidity of the rear side door, and can suppress the opening deformation at the lower front end of the rear wheel house.

Also, as an aspect of the present invention, of the two door hinges, the door hinge on the vehicle lower side is substantially the same as the fastening position between the rear flange portion of the reinforcing member and the rear wheel house in the vehicle vertical direction. You may connect with the said protrusion part of a reinforcement member.
According to the present invention, the side body structure of the vehicle can secure the support rigidity of the rear side door more stably.

  Furthermore, the vehicle body structure of the vehicle can efficiently distribute and transmit the load acting on the door hinge on the vehicle lower side via the reinforcing member and the rear wheel house. For this reason, for example, the vehicle body structure of the vehicle can suppress the increase in the number of parts and suppress the intrusion of the rear side door into the vehicle interior at the time of a side collision.

Further, as an aspect of the present invention, a suspension attachment portion to which a rear suspension for supporting the rear wheel is attached may be provided at the rear end of the side sill.
According to the present invention, the side body structure of the vehicle can disperse and transmit the input load input to the suspension mounting portion via the side sill, the rear wheel house, and the reinforcing member.

At this time, since the rear flange portion of the reinforcing member is connected to both the wheel house inner and the wheel house outer, the vehicle side body structure has a case where a relatively large input load is applied to the suspension mounting portion. Even so, it is possible to prevent the connection between the lower front end of the wheel house outer and the lower front end of the wheel house inner.
Therefore, the side body structure of the vehicle can suppress the opening deformation at the lower front end of the rear wheel house even when the suspension mounting portion is provided at the rear end of the side sill.

  As an aspect of the present invention, the rear flange portion of the reinforcing member may be fastened to a joint portion between the side sill, the wheel house inner, and the wheel house outer.

  According to the present invention, the side body structure of the vehicle can more reliably improve the connection strength between the lower front end of the wheel house inner and the lower front end of the wheel house outer. For this reason, the side body structure of the vehicle can more reliably suppress the opening deformation at the lower front end of the rear wheel house.

  Further, as an aspect of the present invention, a floor panel that is disposed between the side sills and forms a floor surface of the vehicle, an in-vehicle battery disposed below the floor panel, and the in-vehicle battery is mounted and fixed. And a battery tray connected to the side sill.

  According to the present invention, the side body structure of the vehicle is a case where the weight of the heavy vehicle battery and the battery tray act on the lower front end of the rear wheel house via the side sill, and the lower front end of the rear wheel house. Can be prevented from opening deformation.

  Further, as an aspect of the present invention, a pair of left and right roof side rails extending in the vehicle front-rear direction above the side sill, a pair of left and right front pillars extending from the front end of the roof side rail to the vehicle front lower side, the front end of the side sill, And a pair of left and right hinge pillars for connecting the lower ends of the front pillars in the vehicle vertical direction, and the reinforcing member is formed in a shape for connecting the roof side rail and the side sill in the vehicle vertical direction, the reinforcing member, The roof side rail, the front pillar, the hinge pillar, and the side sill may constitute an annular vehicle body skeleton that is substantially annular when viewed from the side along the side door opening.

According to the present invention, the side body structure of the vehicle can disperse and transmit the load input to the rear end of the side sill via the annular body frame that is substantially annular when viewed from the side.
Furthermore, since the cross-sectional area of the closed cross section formed by the lower part of the reinforcing member and the rear side panel is large, the side body structure of the vehicle has an annular shape in which the cross-sectional area is suppressed from becoming extremely small in part. A car body skeleton can be constructed.

Thereby, the side part vehicle body structure of a vehicle can comprise the cyclic | annular vehicle body frame | skeleton used as a more stable side view substantially cyclic | annular form.
Therefore, the side body structure of the vehicle can further suppress the opening deformation at the lower front end of the rear wheel house by the annular body frame having a substantially annular shape when viewed from the side.

  According to the present invention, it is possible to provide a vehicle side body structure that can suppress opening deformation at the lower front end of the rear wheel house even when a relatively large input load is applied to the rear end of the side sill.

The right view which shows the right side view in the side part vehicle body of a vehicle. The bottom view which shows the external appearance of the vehicle in bottom view. The right view which shows the right side of the vehicle in the state which removed the rear side door. AA arrow sectional drawing in FIG. FIG. 5 is a cross-sectional view taken along the line BB in FIGS. 3 and 4. CC sectional view taken on the line in FIG. DD sectional view taken on the line in FIG. The side view which shows the external appearance of the side pillar seen from the vehicle width direction inner side. The external appearance perspective view which shows the lower part external appearance of the side pillar seen from the vehicle width direction inner side and the vehicle back. The principal part expanded sectional view which shows the expanded cross section of the principal part in FIG.

An embodiment of the present invention will be described below with reference to the drawings.
The vehicle 1 of the present embodiment is a so-called hatchback type in which a luggage compartment is provided at the rear of a passenger compartment where passengers get on and off, and the rear of the cargo compartment is covered by a back door (also referred to as a lift gate) so as to be opened and closed. Vehicle. Such a side body structure of the vehicle 1 will be described with reference to FIGS.

  1 shows a right side view of the side body of the vehicle 1, FIG. 2 shows a bottom view of the vehicle 1 in a bottom view, and FIG. 3 shows a right side view of the vehicle 1 with the rear side door 9 removed. 4 is a cross-sectional view taken along the line AA in FIG. 2, FIG. 5 is a cross-sectional view taken along the line BB in FIGS. 3 and 4, and FIG. 6 is a cross-sectional view taken along the line CC in FIG. 7 shows a cross-sectional view taken along the arrow, FIG. 7 shows a cross-sectional view taken along the arrow D-D in FIG. 3, FIG. 8 shows a side view of the side pillar 8 viewed from the inside in the vehicle width direction, and FIG. And the external appearance perspective view of the lower part of the side pillar 8 seen from the vehicle back is shown, and FIG. 10 has shown the principal part expanded sectional view which shows the principal part expanded cross section in FIG.

  For clarity of illustration, the outer panel that faces the rear side panel 7 on the outer side in the vehicle width direction and forms the exterior design surface of the vehicle 1 is not shown in the drawing. Further, in FIG. 1, only the inner panel of the rear side door 9 is shown.

In the figure, arrows Fr and Rr indicate the front-rear direction, arrow Fr indicates the front, and arrow Rr indicates the rear.
Furthermore, arrows Rh and Lh indicate the width direction, arrow Rh indicates the right direction, and arrow Lh indicates the left direction. In addition, the arrow IN indicates the inner side in the vehicle width direction, and the arrow OUT indicates the outer side in the vehicle width direction.

  As shown in FIGS. 1 and 2, the side body of the vehicle 1 has a pair of left and right side sills 2 extending in the vehicle front-rear direction at positions spaced apart from each other in the vehicle width direction, and from the rear end of the side sill 2 to the vehicle rear side. A pair of left and right rear side frames 3 that extend, a pair of left and right roof side rails 4 that extend in the vehicle front-rear direction above the side sill 2, and a pair of left and right rear pillars 5 that extend downward from the rear end of the rear side frame 3 to the rear of the vehicle. Yes.

  Further, as shown in FIGS. 1 and 3, the side body of the vehicle 1 includes a pair of left and right rear wheel houses 6 that cover the rear wheels from above the vehicle, and a pair of left and right wheels that form a side wall of the rear part of the vehicle together with the rear wheel house 6. The rear side panel 7 and a pair of left and right side pillars 8 having a closed cross section extending in the vehicle vertical direction are provided.

  Although not shown in detail, the side body of the vehicle 1 has a pair of left and right front pillars extending from the front end of the roof side rail 4 downward to the rear of the vehicle, a front end of the side sill 2, and a front end of the front pillar. A pair of left and right hinge pillars connected in the direction are provided.

  As shown in FIGS. 1 and 3, the side body of the vehicle 1 has an opening surrounded by the side sill 2, the roof side rail 4, the side pillar 8, the front pillar, and the hinge pillar. It is configured as a side door opening S for getting on and off. The side door opening S is covered by a rear side door 9 disposed on the vehicle rear side and a front side door (not shown) disposed on the front side of the rear side door 9 in the vehicle.

  Further, as shown in FIG. 3, the side body of the vehicle 1 is a side sill 2, a roof side rail 4, a side pillar 8, a front pillar, and a hinge pillar. A vehicle body skeleton W is formed.

  Further, as shown in FIGS. 2 and 4, the vehicle 1 of the present embodiment connects the left and right side sills 2, and is provided below the floor panel 10 that forms the floor surface of the vehicle 1. A vehicle-mounted battery 11 that supplies power and a battery tray 12 on which the vehicle-mounted battery 11 is placed and fixed are disposed.

  As shown in FIGS. 2 and 4, the in-vehicle battery 11 is substantially the same as the length in the vehicle front-rear direction from the front end to the rear end of the floor panel 10 between the left and right side sills 2, and substantially the center in the vehicle front-rear direction of the side sill 2. The rear portion of the vehicle is configured in a substantially rectangular shape in bottom view having a length in the vehicle width direction that is closest to the side sill 2 relative to the position in the vehicle front-rear direction.

On the other hand, as shown in FIGS. 2 and 4, the battery tray 12 has a substantially polygonal shape as viewed from the bottom and has a larger area than the vehicle-mounted battery 11 when viewed from the bottom, and is formed in a substantially box shape with the vehicle upper side opened. ing.
As shown in FIG. 2, the battery tray 12 is connected to the left and right side sills 2 via a pair of left and right first connection brackets 13, a pair of left and right second connection brackets 14, and a pair of left and right third connection brackets 15. Has been.

Specifically, as shown in FIG. 2, the left and right first connecting brackets 13 are connected to the battery tray 12 and the side sill 2 (the side sill inner 22, which will be described later) at a position ahead of the vehicle in the vehicle longitudinal direction center of the side sill 2. The lower surface) in the vehicle width direction.
Further, as shown in FIG. 2, the left and right second connection brackets 14 connect the battery tray 12 and the side sill 2 (the lower surface of the side sill inner 22, which will be described later) in the vehicle width direction at a position approximately in the center of the side sill 2 in the vehicle front-rear direction. It is linked to.

Further, as shown in FIG. 2, the left and right third connection brackets 15 connect the battery tray 12 and the side sill 2 (side surfaces in the vehicle width direction of the side sill inner 22 described later) at a position near the rear end of the side sill 2. The fourth connecting bracket 16 is connected in the vehicle width direction.
The fourth connecting bracket 16 is a substantially L-shaped bracket when viewed from the front, and is joined to a suspension mounting bracket 17 (see FIG. 5) and a side sill 2 described later.

  Continuing further on each of the components constituting the side body of the vehicle 1 described above, the left and right side sills 2 are, as shown in FIGS. 2 and 5, cross-sectional shapes in longitudinal sections along the vehicle width direction. However, a side sill outer 21 having a substantially hat-shaped cross-section protruding outward in the vehicle width direction and a side sill inner 22 having a substantially hat-shaped cross-section protruding inward in the vehicle width direction are joined in the vehicle width direction and extend in the vehicle front-rear direction. A closed cross section is formed.

  In the vicinity of the rear end of the side sill inner 22, as shown in FIG. 5, an inner flange portion 22 a erected above the vehicle is formed above the side sill outer 21. The lower front end of the rear wheel house 6 is joined to the inner flange portion 22a of the side sill inner 22 on the outer surface in the vehicle width direction.

  Further, as shown in FIG. 2, a pair of left and right suspensions having a substantially flat plate shape extending toward the vehicle rear side and the vehicle width direction inner side than the rear end of the side sill outer 21 are attached to the rear end of the side sill inner 22. The part 23 is integrally formed. The suspension mounting portion 23 is extended toward the rear of the vehicle and inward in the vehicle width direction along an inner main body 61a of a wheel house inner 61, which will be described later, in a bottom view.

  As shown in FIGS. 2, 4, and 5, the suspension attachment portion 23 includes a suspension attachment bracket 17 joined to the inner surface in the vehicle width direction of the side sill inner 22, and a trailing arm in the torsion beam suspension 18. The front end is supported in a swingable manner.

  As shown in FIG. 5, the suspension mounting bracket 17 has a cross-sectional shape in a longitudinal section along the vehicle width direction that is a substantially inverted portal shape with a cross section opened in the upper part of the vehicle, and the lower surface of the floor panel 10, The side sill inner 22 is joined to the inner surface in the vehicle width direction.

Further, although the left and right rear side frames 3 are not shown in detail, the cross-sectional shape in the longitudinal section along the vehicle width direction is a side frame lower having a substantially hat-shaped section projecting downward in the vehicle, and a substantially plate-shaped section. It consists of a side frame upper.
The rear side frame 3 forms a closed cross section extending in the vehicle front-rear direction by joining a side frame upper located above the vehicle to a side frame lower located below the vehicle in the vehicle vertical direction.

The left and right roof side rails 4 are not shown in detail, but in a longitudinal section along the vehicle width direction, the roof side rail outer and the roof side rail outer having a cross-sectional shape protruding outward in the vehicle width direction. Thus, a closed cross section extending in the vehicle front-rear direction is formed by joining a roof side rail inner with a cross-sectional shape that is located on the inner side in the vehicle width direction and protrudes inward in the vehicle width direction.
The roof side rail 4 forms a closed cross section that extends in the vehicle front-rear direction by the roof side rail outer and the roof side rail inner, thereby forming a vehicle body skeleton that extends in the vehicle front-rear direction.

  The left and right rear pillars 5 are not shown in detail, but in a longitudinal section along the vehicle width direction, a rear pillar upper having a cross-sectional shape protruding above the vehicle, and positioned below the vehicle with respect to the rear pillar upper, The rear pillar lower has a cross-sectional shape protruding downward from the vehicle.

  The rear pillar 5 has a closed cross section extending downward from the rear end of the roof side rail 4 so as to be continuous with the closed cross section of the roof side rail 4 by joining the rear pillar upper and the rear pillar lower. .

  Further, the left and right rear wheel houses 6 are disposed behind the rear edge of the side door opening S as shown in FIG. As shown in FIGS. 3 and 4, the rear wheel house 6 is located on the inner side in the vehicle width direction with respect to the rear side panel 7 and on the outer side in the vehicle width direction with respect to the rear side panel 7. The wheel house outer 62 is joined in the vehicle width direction, and is formed in a substantially dome shape that covers the rear wheel from above the vehicle.

  As shown in FIGS. 4 and 6, the wheel house inner 61 includes an inner main body 61 a that bulges inward in the vehicle width direction with respect to the rear side panel 7 in a substantially dome shape, a front end edge, an upper end edge of the inner main body 61 a, It is integrally formed with an inner flange 61b projecting in a flange shape along the rear end edge.

As shown in FIG. 4, a rear damper support portion 61c that supports the upper end of a rear suspension damper (not shown) is recessed in the upper portion of the inner body 61a.
The lower end of the inner main body 61a is joined to the rear side frame 3 and the upper end edge of the suspension attachment portion 23.

  As shown in FIG. 4, the inner flange 61 b is formed in a shape that can be joined to the wheel house outer 62, the inner flange portion 22 a of the side sill inner 22, and the rear side frame 3. Further, in the vicinity of the lower front end of the inner flange 61b, as shown in FIGS. 4 and 5, a bolt insertion hole for inserting a fastening bolt T screwed into the side pillar 8 is formed.

  On the other hand, as shown in FIGS. 3 and 6, the wheel house outer 62 has a shape that bulges substantially outward in the vehicle width direction with respect to the rear side panel 7 and is formed integrally with the rear side panel 7. . For this reason, in the wheel house outer 62, an outer flange to which the inner flange 61 b of the wheel house inner 61 is joined is formed integrally with the rear side panel 7.

Further, as shown in FIGS. 3 to 5, the left and right rear side panels 7 are panel members having a thickness in the vehicle width direction, and the wheel house outer 62 described above is integrally formed.
Further, in the vicinity of the lower front end of the wheel house outer 62 in the rear side panel 7, that is, in the vicinity of the lower front end of the outer flange in the wheel house outer 62, as shown in FIGS. 4 and 5, bolt insertion holes of the wheel house inner 61 are provided. Bolt insertion holes that communicate with each other are formed as openings.

In addition, as shown in FIGS. 3 and 4, a window opening 7 a having a substantially triangular shape in side view to which a window glass (not shown) is attached is formed in the upper portion of the rear side panel 7.
Furthermore, as shown in FIGS. 4 and 6, the rear side panel 7 has two openings for fastening and fixing an upper door hinge 85 and a lower door hinge 84, which will be described later, to the side pillar 8 from the inner side in the vehicle width direction. An opening 7 b is formed in a portion facing the upper door hinge 85 and the lower door hinge 84.

  As shown in FIGS. 3 to 5, the rear side panel 7 has upper ends joined to the roof side rail 4 and the rear pillar 5, and the lower end on the vehicle front side relative to the wheel house outer 62 is the inner flange portion 22 a of the side sill inner 22. And the lower end of the vehicle rear side of the wheel house outer 62 is joined to the rear side frame 3.

  Further, as shown in FIGS. 3 and 4, the left and right side pillars 8 substantially connect the side sill 2 and the roof side rail 4 along the front end edge of the rear side panel 7 serving as the rear end edge of the side door opening S. It is connected vertically. As shown in FIGS. 6 and 7, the side pillar 8 is formed such that a cross-sectional shape in a horizontal cross section along the vehicle width direction forms a closed cross section that extends in the vehicle vertical direction with the rear side panel 7.

  More specifically, as shown in FIG. 3 and FIGS. 6 to 8, the side pillar 8 has a cross-sectional shape in a horizontal cross section along the vehicle width direction, and a substantially hat-shaped portion having an open inside in the vehicle width direction. A pillar main body 81 including the pillar reinforcement 82 joined to the inner surface of the pillar main body 81 in the vehicle width direction, and a flange-like rear separate flange 83 joined to the lower rear end of the pillar main body 81. Has been.

  As shown in FIGS. 3 and 6 to 8, the pillar main body 81 includes a protruding portion 811 protruding outward in the vehicle width direction, a substantially flange-shaped front integrated flange portion 812 provided at the front end edge of the protruding portion 811, and , And a rear integrated flange portion 813 having a substantially flange shape provided at the rear end edge of the protruding portion 811.

As shown in FIGS. 6 and 7, the projecting portion 811 has a cross-sectional shape in a horizontal cross section along the vehicle width direction, and a substantially gate-shaped cross section with an inner side in the vehicle width direction opened.
As shown in FIGS. 3 and 8, the front end edge of the protruding portion 811 is located on the front end edge of the rear side panel 7 at a position spaced apart from the front end edge of the rear side panel 7 by a predetermined distance with respect to the front end edge of the rear side panel 7. It is formed in the shape extended in the vehicle front-back direction so that it may follow.

  On the other hand, as shown in FIGS. 3 and 8, the rear end edge of the protruding portion 811 extends in the vehicle vertical direction so as to form the front end edge of the window opening 7a in the side view, and the rear side panel 7 and the wheel house outer It is formed in a shape along the boundary with 62.

  Specifically, as shown in FIG. 3, the rear end edge of the protruding portion 811 is, when viewed from the side, a portion below the vehicle in a vehicle vertical direction position that is substantially the same as the vehicle vertical direction approximate center in the rear wheel house 6. It is formed to have a shape along the boundary between the rear side panel 7 and the wheel house outer 62.

  That is, as shown in FIG. 3, the protrusion 811 has a length in the vehicle front-rear direction below the vehicle center in the vehicle vertical direction of the rear wheel house 6 when the rear wheel panel 6 is joined to the rear side panel 7. 6 is formed so as to be narrower than the length in the vehicle front-rear direction above the vehicle rather than the substantially center in the vehicle vertical direction. The narrow portion of the protruding portion 811 is defined as a proximity portion 811a whose rear end edge is close to the rear wheel house 6 (see FIG. 8).

  As shown in FIGS. 3 and 6 to 8, the front-side integrated flange portion 812 is folded from the front end edge of the protruding portion 811 toward the front of the vehicle in the vehicle vertical direction range from the roof side rail 4 to the side sill 2. It is extended to return. Note that the front end edge of the front-side integrated flange portion 812 is formed in a shape along the front end edge of the rear side panel 7.

  As shown in FIG. 3 and FIGS. 6 to 8, the rear-side integrated flange portion 813 extends from the rear end edge of the protruding portion 811 to the vehicle in the vehicle vertical direction range from the roof side rail 4 to the upper end of the adjacent portion 811 a. It extends so as to be folded back.

  Further, as shown in FIGS. 6 and 8, the pillar reinforcement 82 has a cross-sectional shape in a horizontal cross section along the vehicle width direction that is substantially similar to the protruding portion 811 in a cross-sectional gate shape. The vehicle is formed in a shape having a length in the vehicle vertical direction from a position above the vehicle to an upper door hinge 85 (to be described later) to the approximate center of the vehicle vertical direction in the proximity portion 811a.

  Further, as shown in FIGS. 6, 8, and 9, the rear separate flange 83 is configured separately from the pillar main body 81, and is joined to the pillar main body 81 so that the proximity portion 811 a is formed. It is comprised so that it may become a flange part of the vehicle rear side.

  In other words, when the rear integrated flange portion 813 is the rear upper flange portion of the side pillar 8, the rear separate flange 83 is a rear lower flange portion located below the rear upper flange portion of the side pillar 8 and the vehicle. It is comprised so that it may become.

  More specifically, as shown in FIGS. 6, 8, and 9, the rear separate flange 83 abuts against the rear surface of the proximate portion 811 a in the protruding portion 811 from the front side of the vehicle, and the proximate portion 811 a It is joined to the rear surface.

  As shown in FIGS. 6 and 9, the rear separate flange 83 has a substantially L-shaped cross section in the horizontal cross section along the vehicle width direction, and is joined to the rear surface of the proximity portion 811a. The surface portion 831 and the joint surface portion 831 extend in a substantially flange shape from the inner edge in the vehicle width direction toward the front of the vehicle, and are integrally formed with the rear side panel 7 and the contact surface portion 832 that contacts the side sill 2. ing.

  As shown in FIGS. 5 and 9, the abutting surface portion 832 of the rear separate flange 83 has, in a side view, a substantially arc-shaped arc portion that protrudes toward the front side of the vehicle at a predetermined interval in the vehicle vertical direction. It is formed in the shape which provided four apart.

  The arc portion of the abutment surface portion 832 is a connecting portion to the rear side panel 7 and the side sill 2, and the first connecting portion 832a, the second connecting portion 832b, the third connecting portion 832c, and the fourth connecting portion from below the vehicle. 832d.

  The third connecting portion 832c and the fourth connecting portion 832d are formed with a bolt insertion hole H through which the fastening bolt T is inserted, as shown in FIGS. A weld nut N to which the fastening bolt T is screwed is welded to the outer surface in the width direction.

  As shown in FIGS. 3, 5, and 7, the side pillar 8 having such a configuration has an upper end joined to a vehicle width direction outer surface of the roof side rail 4 and a lower end is an outer side in the vehicle width direction of the side sill 2. The front side integral flange portion 812 and the rear side integral flange portion 813 are joined to the rear side panel 7.

  Further, as shown in FIGS. 5 and 6, the rear separate flange 83 of the side pillar 8 has a first connecting portion 832a and a second connecting portion 832b joined to the side sill 2 by spot welding, and is connected to the third connecting portion 832a. The portion 832c and the fourth connecting portion 832d are fastened to the rear wheel house 6 with fastening bolts T.

  Specifically, the first connecting portion 832a and the second connecting portion 832b come into contact with the inner flange portion 22a of the side sill inner 22 projecting above the side sill outer 21 from the outside in the vehicle width direction. At the same time, it is joined to the flange portion of the side sill inner 22.

  Further, as shown in FIGS. 5 and 10, the third connecting portion 832 c is joined by overlapping the inner flange portion 22 a of the side sill inner 22, the wheel house inner 61, and the wheel house outer 62 in this order from the inner side in the vehicle width direction. The part abuts from the outside in the vehicle width direction and is fastened together with the fastening flange T to the inner flange portion 22 a of the side sill inner 22, the wheel house inner 61, and the wheel house outer 62.

  Further, as shown in FIGS. 5 and 10, the fourth connecting portion 832 d is arranged on the outer side in the vehicle width direction with respect to the joint portion that is overlapped and joined in the order of the wheel house inner 61 and the wheel house outer 62 from the inner side in the vehicle width direction. And are fastened together with the wheel house inner 61 and the wheel house outer 62 by fastening bolts T.

  As shown in FIGS. 1 and 3, the side pillar 8 configured as described above includes a lower door hinge 84 and an upper door hinge 85 that allow the rear side door 9 to be opened and closed at a predetermined interval in the vehicle vertical direction. At the position, the protrusion 811 is fastened and fixed to the outer surface in the vehicle width direction.

  As shown in FIG. 6, the lower door hinge 84 includes a pillar side base 84a fastened to the protruding portion 811 of the side pillar 8, a door side base 84b fastened to the rear side door 9, a pillar side base 84a, and It is comprised with the hinge pin 84c which supports the door side base part 84b rotatably.

  As shown in FIGS. 3, 6, and 8, the lower door hinge 84 is fastened and fixed to the adjacent portion 811 a of the side pillar 8 at a position substantially the same as the fourth connecting portion 832 d of the side pillar 8 in the vehicle vertical direction. Has been.

  On the other hand, as shown in FIG. 3, the upper door hinge 85 has substantially the same configuration as the lower door hinge 84 and is located above the vehicle relative to the adjacent portion 811 a in the side pillar 8 and from the vehicle vertical direction center in the side pillar 8. Also, it is slightly fastened and fixed to the protruding portion 811 above the vehicle.

  As described above, a pair of left and right side sills 2 extending in the vehicle front-rear direction with a predetermined interval in the vehicle width direction of the vehicle 1 and a pair of left and right side sills 2 are joined to the rear end of the side sill 2 and the lower front ends are joined. A vehicle 1 having a rear wheel house 6 and a pair of left and right rear side panels 7 which are joined to the side sill 2 at the front of the vehicle behind the rear wheel house 6 and form a side wall at the rear of the vehicle with the rear wheel house 6. The side body structure of the vehicle is disposed along the front end edge of the rear side panel 7 which is disposed on the outer side in the vehicle width direction of the rear side panel 7 and is the rear end edge of the side door opening S covered by the side door of the vehicle 1. A pair of left and right side pillars 8 forming a closed cross section extending in the vertical direction is provided, and the side pillar 8 protrudes outward in the vehicle width direction in a horizontal cross section along the vehicle width direction. The rear side connected to the joint part of the wheel house inner 61 and the wheel house outer 62 which are provided in a substantially flange shape with respect to the rear end of the projecting part 811 and the projecting part 811. Due to the provision of the separate flange 83, even when a relatively large input load is applied to the rear end of the side sill 2, the mouth opening deformation at the lower front end of the rear wheel house 6 (as indicated by the arrow Y in FIG. 6). (Deformation in the indicated direction) can be suppressed.

  Specifically, since the rear side panel 7 and the side pillar 8 form a closed cross section extending in the vehicle vertical direction, the side body structure of the vehicle 1 has a rear side panel along the rear edge of the side door opening S. 7 rigidity can be improved.

  Further, since the rear separate flange 83 of the side pillar 8 is connected to the joint portion between the wheel house inner 61 and the wheel house outer 62, the side body structure of the vehicle 1 includes the wheel house outer 62 and the wheel house. Compared with the case where only the inner 61 is welded, the connection strength between the wheel house outer 62 and the wheel house inner 61 can be improved.

Thereby, the side part vehicle body structure of the vehicle 1 can improve the mechanical strength with respect to the input load which cancels | releases connection with the lower front end of the wheel house outer 62, and the lower front end of the wheel house inner 61. FIG.
Accordingly, the side body structure of the vehicle 1 can suppress the opening deformation at the lower front end of the rear wheel house 6 even when a relatively large input load is applied to the rear end of the side sill 2.

The rear separate flange 83 of the side pillar 8 extends forward of the vehicle with respect to the lower rear end of the projecting portion 811 and is fastened together with the joint portion between the wheel house inner 61 and the wheel house outer 62. As a result, the side body structure of the vehicle 1 allows the lower rear end of the protruding portion 811 to be connected to the rear rear flange 83 as compared to the case where the rear separate flange 83 extends from the rear end of the protruding portion 811 to the vehicle rear side. It is possible to easily approach the lower front end of the wheel house 6.
Thereby, the side body structure of the vehicle 1 can ensure a large cross-sectional area of the closed cross section formed by the lower part of the side pillar 8 and the rear side panel 7 in the vicinity of the lower front end of the rear wheel house 6.

  Furthermore, since the rear separate flange 83 of the side pillar 8 is fastened together at the joint between the wheel house inner 61 and the wheel house outer 62, the side body structure of the vehicle 1 is the lower part of the wheel house inner 61. The connection strength between the front end and the lower front end of the wheel house outer 62 can be further improved.

  Therefore, the side body structure of the vehicle 1 has the rear wheel house 6 even when a relatively large input load is applied to the rear end of the side sill 2 by the rear separate flange 83 extending forward of the vehicle. Opening deformation at the lower front end can be further suppressed.

In addition, a rear side door 9 that covers the rear part of the side door opening S is provided, and the protruding portions 811 of the side pillar 8 are disposed at a predetermined interval in the vehicle vertical direction, and support the rear side door 9 so that it can be opened and closed. By providing the upper door hinge 85 and the lower door hinge 84, the side body structure of the vehicle 1 can support the upper door hinge 85 and the lower door hinge 84 with the side pillar 8 having a closed cross section with the rear side panel 7. Therefore, the rear side door 9 can be stably supported.
For this reason, the side body structure of the vehicle 1 can suppress the increase in the number of parts, ensure the support rigidity of the rear side door 9, and suppress the opening deformation at the lower front end of the rear wheel house 6.

  Further, since the lower door hinge 84 is connected to the protruding portion 811 of the side pillar 8 at a position substantially the same as the fourth connecting portion 832d of the side pillar 8 in the vehicle vertical direction, the side body structure of the vehicle 1 is The support rigidity of the rear side door 9 can be secured more stably.

  Further, the side body structure of the vehicle 1 can efficiently distribute and transmit the load acting on the lower door hinge 84 via the side pillar 8 and the rear wheel house 6. For this reason, for example, the vehicle body structure of the vehicle 1 can suppress an increase in the number of parts and suppress the intrusion of the rear side door 9 into the vehicle interior at the time of a side collision.

  In addition, since the suspension mounting portion 23 to which the torsion beam type suspension 18 that supports the rear wheel is mounted at the rear end of the side sill 2, the side body structure of the vehicle 1 has an input load input to the suspension mounting portion 23. Can be distributed and transmitted via the side sill 2, the rear wheel house 6, and the side pillar 8.

At this time, since the rear separate flange 83 of the side pillar 8 is connected to both the wheel house inner 61 and the wheel house outer 62, the side body structure of the vehicle 1 is relatively close to the suspension mounting portion 23. Even when a large input load is applied, the connection between the lower front end of the wheel house outer 62 and the lower front end of the wheel house inner 61 can be prevented.
Therefore, the side body structure of the vehicle 1 can suppress opening deformation at the lower front end of the rear wheel house 6 even when the suspension mounting portion 23 is provided at the rear end of the side sill 2.

  Further, the rear separate flange 83 of the side pillar 8 is fastened to the joint portion of the side sill 2, the wheel house inner 61, and the wheel house outer 62. The connection strength between the lower front end of the house inner 61 and the lower front end of the wheel house outer 62 can be more reliably improved. For this reason, the side body structure of the vehicle 1 can more reliably suppress the opening deformation at the lower front end of the rear wheel house 6.

  A floor panel 10 that is disposed between the side sills 2 and forms the floor surface of the vehicle 1, an in-vehicle battery 11 that is disposed below the floor panel 10, and the in-vehicle battery 11 are mounted and fixed. In addition, by providing the battery tray 12 connected to the side sill 2, the side body structure of the vehicle 1 is configured so that the weight of the vehicle-mounted battery 11, which is a heavy object, and the weight of the battery tray 12 via the side sill 2 It is a case where it acts on the lower front end of the house 6, and the opening deformation at the lower front end of the rear wheel house 6 can be suppressed.

  Further, a pair of left and right roof side rails 4 extending in the vehicle longitudinal direction above the side sill 2, a pair of left and right front pillars extending from the front end of the roof side rail 4 to the vehicle front lower side, a front end of the side sill 2, and a front pillar A pair of left and right hinge pillars that connect the lower ends in the vehicle vertical direction, and the side pillars 8 are formed in a shape that connects the roof side rail 4 and the side sill 2 in the vehicle vertical direction, and the side pillars 8, the roof side rails 4, The side body structure of the vehicle 1 is input to the rear end of the side sill 2 because the front body, the hinge pillar, and the side sill 2 form an annular body skeleton W that is substantially annular when viewed from the side along the side door opening S. The distributed load can be distributed and transmitted through the annular vehicle body skeleton W that is substantially annular when viewed from the side.

  Further, since the cross-sectional area of the closed cross section formed by the lower part of the side pillar 8 and the rear side panel 7 is ensured, the side body structure of the vehicle 1 is partially reduced in the cross-sectional area. A suppressed annular vehicle body skeleton W can be configured.

Thereby, the side part vehicle body structure of the vehicle 1 can comprise the cyclic | annular vehicle body frame | skeleton W used as the more stable side view substantially cyclic | annular form.
Therefore, the side body structure of the vehicle 1 can further suppress the opening deformation at the lower front end of the rear wheel house 6 by the annular body frame W having a substantially annular shape when viewed from the side.

In correspondence between the configuration of the present invention and the above-described embodiment,
The pair of left and right reinforcing members of the present invention correspond to the pair of left and right side pillars 8 of the embodiment,
Similarly,
The rear flange portion corresponds to the rear separate flange 83,
The door hinge corresponds to the upper door hinge 85 and the lower door hinge 84,
The door hinge on the vehicle lower side corresponds to the lower door hinge 84,
The rear suspension corresponds to the torsion beam suspension 18,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

  For example, in the above-described embodiment, the vehicle 1 is provided with the torsion beam type suspension 18. However, the present invention is not limited to this, and any suspension type in which an arm member is connected to the suspension mounting portion 23 provided on the side sill 2. Alternatively, the vehicle may be provided with an appropriate type of suspension.

  Further, although the wheel house outer 62 and the rear side panel 7 are integrally formed, the present invention is not limited to this, and the wheel house outer 62 and the rear side panel 7 may be configured separately. Alternatively, the wheel house inner 61 and the rear side panel 7 may be integrally formed, and the wheel house outer 62 may be configured separately.

Further, the rear separate flange 83 of the side pillar 8 is configured separately from the pillar main body 81, but is not limited thereto, and may be integrally formed with the pillar main body 81.
Further, the side pillar 8 having a closed cross section with the rear side panel 7 has been described. However, the present invention is not limited to this, and any reinforcing member that is a separate member from the side pillar may be used as long as the member has a closed cross section with the rear side panel 7. It may be.

DESCRIPTION OF SYMBOLS 1 ... Vehicle 2 ... Side sill 4 ... Roof side rail 6 ... Rear wheel house 7 ... Rear side panel 8 ... Side pillar 9 ... Rear side door 10 ... Floor panel 11 ... In-vehicle battery 12 ... Battery tray 18 ... Torsion beam suspension 23 ... Suspension attachment Part 61 ... Wheel house inner 62 ... Wheel house outer 83 ... Rear separate flange 84 ... Lower door hinge 85 ... Upper door hinge 811 ... Projection part S ... Side door opening W ... Ring body frame

Claims (8)

A pair of left and right side sills extending in the vehicle longitudinal direction with a predetermined interval in the vehicle width direction of the vehicle;
A lower front end is joined to the rear end of the side sill, and a pair of left and right rear wheel houses covering the rear wheel,
A vehicle body structure for a side part of a vehicle including a pair of left and right rear side panels that are joined to the side sill at a front side of the rear wheel house and have a side wall of a rear part of the vehicle with the rear wheel house. ,
A closed cross section that is disposed outside the rear side panel in the vehicle width direction and extends in the vehicle vertical direction along the front end edge of the rear side panel that becomes the rear end edge of the side door opening covered by the side door of the vehicle. A pair of left and right reinforcing members,
The reinforcing member is
In a horizontal cross section along the vehicle width direction, a projecting portion having a substantially gate-shaped cross section projecting outward in the vehicle width direction,
A side portion of a vehicle provided with a substantially flange shape with respect to a rear end of the protruding portion, and a wheel house inner constituting the rear wheel house and a rear flange portion connected to a joint portion of the wheel house outer. Body structure. The rear flange portion of the reinforcing member is
The side body structure of a vehicle according to claim 1, wherein the side body structure of the vehicle is extended to the front of the vehicle with respect to the lower rear end of the projecting portion and is fastened to a joint portion between the wheel house inner and the wheel house outer. A rear side door covering a rear portion of the side door opening;
The protrusion of the reinforcing member is
The side body structure of a vehicle according to claim 2, further comprising two door hinges that are disposed at predetermined intervals in the vehicle vertical direction and that support the rear side door so as to be freely opened and closed. Of the two door hinges, the door hinge on the vehicle lower side is
The side body of a vehicle according to claim 3, wherein the vehicle body is connected to the protruding portion of the reinforcing member at a position in the vehicle vertical direction substantially the same as a fastening position between the rear flange portion of the reinforcing member and the rear wheel house. Construction. The side body structure of a vehicle according to any one of claims 2 to 4, further comprising a suspension attachment portion to which a rear suspension that supports the rear wheel is attached at a rear end of the side sill. The rear flange portion of the reinforcing member is
The side body structure of a vehicle according to claim 5, wherein the side sill, the wheel house inner, and the wheel house outer are fastened together at a joint portion. A floor panel that is disposed between the side sills and forms the floor of the vehicle;
An in-vehicle battery disposed below the vehicle on the floor panel;
The side body structure of a vehicle according to any one of claims 2 to 6, further comprising: a battery tray connected to the side sill while the in-vehicle battery is placed and fixed. A pair of left and right roof side rails extending in the vehicle front-rear direction above the side sill,
A pair of left and right front pillars extending downward from the front end of the roof side rail to the front of the vehicle;
A pair of left and right hinge pillars connecting the front end of the side sill and the lower end of the front pillar in the vehicle vertical direction,
The reinforcing member is
It is formed in a shape that connects the roof side rail and the side sill in the vehicle vertical direction,
8. The vehicle body according to any one of claims 2 to 7, wherein the reinforcing member, the roof side rail, the front pillar, the hinge pillar, and the side sill constitute an annular vehicle body skeleton that is substantially annular when viewed from the side along the side door opening. The side part vehicle body structure of the vehicle as described in any one.

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