JP4784301B2 - Rear body structure of the vehicle - Google Patents

Description

  The present invention relates to a rear vehicle body structure of a vehicle, and more particularly to a rear vehicle body structure of a vehicle that improves the rigidity of a lower end edge of a wheel house provided at the rear of the vehicle.

  Conventionally, since a part of a rear wheel suspension device is attached to a wheel house that accommodates a rear wheel or the like inside, it is known to reinforce by using a strong rear side frame.

  For example, Patent Document 1 below proposes a structure in which a reinforcing panel member is provided between an inner lower end portion at the center of a wheel house and a rear side frame to prevent the wheel house from falling down.

But in the wheel house structure of this patent document 1, the lower end edge part is only joined to the side panel located in a vehicle outer side end by an outer end part.
JP 2002-205665 A

  Incidentally, in recent years, in order to improve the maneuverability of the vehicle, it has been required to increase the torsional rigidity of the vehicle body.

  From this point of view, when looking at the conventional wheel house structure, the inner and outer ends of the lower edge of the wheel house are fixed to the rear side frame and side panel, respectively, but the vehicle width direction Since the lower edge of the wheel house is not fixed to the vehicle body at all, the lower edge of the wheel house is easily deformed, twisting occurs at the wheel house part located at the corner of the vehicle body, and the torsional rigidity of the vehicle body is reduced. There is a problem that it cannot be raised.

  Therefore, the present invention provides a rear vehicle body structure having a wheel house that accommodates a rear wheel therein, thereby increasing the rigidity of the lower end edge of the wheel house, increasing the torsional rigidity of the vehicle body, and improving the vehicle operability. An object is to provide a rear body structure of a vehicle.

The rear vehicle body structure of the vehicle according to the present invention includes a side frame that extends in the vehicle front-rear direction, and is disposed substantially above the side frame and at an outer position in the vehicle width direction and bulges toward the vehicle inner side . A vehicle body structure for a rear part of a vehicle, comprising: a wheel house whose one end is joined to the side frame ; and a side panel that is disposed at an outer position in the vehicle width direction of the wheel house and forms a side wall of the vehicle body. The lower end has a lower end edge extending outward in the vehicle width direction from the vicinity of the upper end of the side frame, and extends in the vehicle width direction between the side frame and the side panel so as to connect the side frame and the side panel. the connection to the plate member is provided, against the upper part of the plate member to the lower edge portion of the wheel house, extending one above the other in the vehicle width direction outer side than the side frame Bonded overlapping surfaces, the lower portion of the plate member relative to the lower surface of the side frame, bonded overlapping surface extending in the vehicle width direction of each other, in the vicinity of the lower edge portion of the wheel house, the rear wheel A mounting portion for attaching a damper of the rear wheel suspension device to be suspended is provided .
According to the above configuration, the lower end edge of the wheel house extending in the vehicle width direction is reinforced by the plate member extending in the vehicle width direction and connecting the side frame and the side panel.
For this reason, the lower end edge part extended in the vehicle width direction of a wheel house will be fixed to a vehicle body side member with a plate member, and can obtain high rigidity.
In particular, when the lower edge of the rear side of the vehicle is fixed with a plate member, the torsional rigidity of the vehicle body is reliably improved because no torsion occurs at the wheel house portion at the outer rear end that is the corner portion of the vehicle body. be able to.

  Moreover, since the lower end edge of the wheel house is fixed by a plate member extending in the vehicle width direction at the time of a side collision of the vehicle, the rigidity in the vehicle width direction of the lower end edge of the wheel house is increased and the side collision performance of the vehicle is also improved. be able to.

In addition, if a plate member is extended in a vehicle width direction and connects a side frame and a side panel, it will not be limited about plate shape, plate direction, etc.
The coupling structure of the plate member and the wheel house lower edge also has welded is desired, but it may also be fastened and securely fitted.

Further, in the vicinity of the lower edge portion of the wheel house, der one provided a mounting portion for mounting the damper rear-wheel suspension system for suspending the rear wheel is, thus, an attachment portion of the damper of the rear wheel suspension Even if it is provided near the lower edge of the wheel house, for example, at the rear edge of the vehicle, depending on the vehicle layout requirements or the type of suspension system, the wheel house lower edge is reinforced with a plate member that extends in the vehicle width direction. Therefore, the input load from the damper of the rear wheel suspension that acts on the mounting portion is distributed and transmitted to the side frames and the side panels, so that the wheel house is not easily displaced.
Therefore, as possible out the mounting portion of the damper of the rear wheel suspension system to prevent the deterioration of the driving stability of the vehicle due to the displacement.

In one embodiment of the present invention, the connection between the plate member and the side frame is performed on the side surface and the lower surface of the side frame.
According to the said structure, a plate member is couple | bonded with respect to two surfaces, the side surface of a side frame, and a lower surface.
For this reason, it is possible to increase the coupling strength of the coupling portion between the plate member and the side frame where the load tends to concentrate, and the load input to the plate member can be distributed to the two surfaces of the side frame and the lower surface.
Therefore, the reinforcing function of the plate member can be further enhanced.

In one embodiment of the present invention, the plate member is composed of a main plate and a sub bracket, and is coupled to the side surface and the lower surface of the side frame by the sub bracket.
According to the said structure, a plate member is comprised by two parts of a main plate and a sub bracket, and is couple | bonded with the side surface and lower surface of a side frame by a sub bracket among these.
Therefore, it is possible to configure the plate member, which has to have a complicated shape, by combining it with the side and bottom surfaces of the side frame, and the side panel and the lower edge of the wheel house, thereby improving press formability. And the moldability of a plate member is securable. Moreover, the joint strength of a plate member and a side frame can be raised by joining to two surfaces of a side frame with a sub bracket.

In one embodiment of the present invention, a floor panel extending in a horizontal plane is provided at a position in the vehicle longitudinal direction of the plate member, and the floor panel is coupled to the plate member.
According to the said structure, a plate member will be couple | bonded also with respect to the floor panel located in a vehicle front-back direction position.
For this reason, since the plate member can transmit the input load to the floor panel in a distributed manner, the plate member can further improve the rigidity.
Therefore, the reinforcing function of the plate member can be further enhanced.

In one embodiment of this invention, the side panel side edge part of the said plate member is clamped and combined with the said side panel and the said floor panel.
According to the said structure, the side panel side edge part of a plate member is firmly couple | bonded by being pinched | interposed and couple | bonded with a side panel and a floor panel.
For this reason, the joint strength of the joint part of the side panel of the plate member where the load tends to concentrate can be increased, and the rigidity of the plate member can be further increased.
Therefore, the reinforcing function of the plate member can be further enhanced.

In one embodiment of the present invention, the vertical height of the plate member is set so as to substantially coincide with the vertical height of the side frame.
According to the above configuration, since the vertical height of the plate member substantially matches the vertical height of the side frame, it is possible to obtain the maximum rigidity of the plate member while suppressing the downward protrusion of the plate member in the vehicle. .
In addition, since the height positions coincide with each other in the case of a side collision of the vehicle, the plate member abuts against the side frame evenly in the vertical direction and deforms, so that the collision load can be effectively absorbed by the plate member.

  According to this invention, the lower end edge extending in the vehicle width direction of the wheel house is fixed to the vehicle body side member by the plate member, and high rigidity can be obtained.

  Therefore, in the rear body structure of the vehicle including the wheel house that houses the rear wheel, the rigidity of the lower end edge of the wheel house can be increased, the torsional rigidity of the vehicle body can be increased, and the operability of the vehicle can be improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the first embodiment will be described with reference to FIGS. 1 is a lower perspective view of the interior of the wheel house at the rear of the vehicle as viewed obliquely from the lower front, FIG. 2 is a side view of the vicinity of the wheel house at the rear of the vehicle with the side outer panel being transmitted, and FIG. It is a front view from the vehicle front of the state cut | disconnected by A line. In the drawing, only the right side portion of the vehicle is shown, but the left side portion of the vehicle is configured similarly.

  As shown in FIG. 1, the rear vehicle body structure of this embodiment includes a pair of rear side frames 1 (only shown on the right side in the drawing) that extend in the vehicle front-rear direction at the rear of the vehicle, and rear wheels on the outer side in the vehicle width direction. (Not shown) The wheel house inner 2 bulged inwardly in the vehicle according to the shape, and as shown in FIG. 3, further extends in the vertical direction on the outer side in the vehicle width direction, A side panel 3 formed integrally with a lower portion of a wheel house outer 3a that is formed on a vehicle body side wall and bulges outward from the vehicle, and a main surface that extends horizontally inward in the vehicle width direction above the rear side frame 1 A floor panel 4 and a connecting plate member 5 extending in the vehicle width direction between the rear side frame 1 and the side panel 3 and connecting the rear side frame 1 and the side panel 3 are provided.

  In addition, as shown in FIGS. 2 and 3, a connecting gusset 7 extending in the vertical direction on the inner side of the vehicle is installed between the wheel house inner 2 and the rear pillar 6 at the rear of the vehicle. 7 and a floor gusset 8 for connecting the main floor panel 4 are installed. Further, as will be described later, a side floor panel 9 extending in a horizontal plane is installed on the vehicle rear side of the wheel house inner 2 (see FIG. 6).

  The aforementioned rear side frame 1 is formed of a member member having a reverse hat cross section extending in the vehicle front-rear direction, and constitutes the main skeleton of the vehicle body structure at the rear of the vehicle, thereby increasing the rigidity of the rear of the vehicle.

The aforementioned wheel house inner 2 swells inward of the vehicle so as to accommodate a rear wheel and a rear wheel suspension device S (hereinafter referred to as a rear suspension device, indicated by broken lines in FIGS. 1 and 2). it is formed on, of which the vehicle rear-side position, dampers 1 0 is a part of the rear suspension unit S (hereinafter, Riadan Pas) is provided with a mounting portion 11 for mounting the top of the.

The mounting portion 11, as shown in FIG. 4, the wheel house to form a flat recess 2a recessed downward in a part of the vehicle rear side of the inner 2, Riadan Pas 1 0 at the center of the recess 2a This is configured by forming a fixing hole 11a for inserting and fixing the upper portion of the .

The mounting portion 11, the is provided on the vehicle rear side of the wheel house inner 2, at the top and front of the vehicle wheel house inner 2, it prevents the Riadan path 1 0 protrudes upward, the vehicle compartment space This is to secure as much as possible and improve the comfort of the passenger compartment.

However, due to the provision of the mounting portion 11 on the vehicle rear side, the mounting portion 11 of the wheel house inner 2, will be input load from Riadan Pa 1 0 is input inclined in the vehicle rear, wheel house An input load different from the conventional one is generated in the inner 2.

  For this reason, in the present embodiment, by providing the connecting gusset 7 and the floor gusset 8 on the inner side of the vehicle above the main floor panel 4 as described above, the input load acting on the attachment portion 11 is applied to the rear pillar 6 and the main floor panel 4. The wheel house inner 2 is reinforced by dispersing the input load acting on the mounting portion 11 by dispersing and transmitting them.

  Further, reinforcement is performed by providing the above-described connecting plate member 5 below the main floor panel 4. Specifically, as shown in FIG. 3, the connecting plate member 5 is disposed below the lower end edge 2 b behind the wheel house inner 2, and the protruding joint flange 5 a protrudes upward from the upper end of the connecting plate member 5. The projecting joint flange 5a is joined to the lower end edge 2b of the wheel house inner 2 to reinforce the lower end edge 2b of the wheel house inner 2.

Meanwhile, even if the setting of the mounting portion of Riadan Pas 1 0 was the top of the wheel house as usual, there is a demand for improving the steering stability of the vehicle to improve the vehicle body torsional rigidity. In order to meet this requirement, it is desired to increase the rigidity of the lower end edge 2b of the wheel house inner 2 located at the corner of the vehicle body and to suppress the twist at the wheel house. Even in response to such a requirement, the twist at the wheel house portion can be suppressed by providing the connection plate member 5 as in the present embodiment.

A detailed vehicle body structure near the connecting plate member 5 will be described with reference to FIGS. 4 is a detailed perspective view of the vehicle body structure in the vicinity of the connecting plate member 5 from the front side of the vehicle, FIG. 5 is a detailed perspective view of the vehicle body structure in the vicinity of the connecting plate member 5 from the rear side of the vehicle, and FIG. FIG. 7 is a top perspective view from the inner side in the vehicle width direction with the floor panel at the rear of the vehicle removed and the rear side frame transmitted, and FIG. 8 the state where the rear side frame is transmitted. FIG. 9 is a cross-sectional view taken along the line B-B in FIG. 2, FIG. 10 is a cross-sectional view taken along the line C-C in FIG. 3, and FIG. It is DD sectional view taken on the line.

  As shown in FIGS. 4 and 5, the connecting plate member 5 is a deformed bracket having a plate-like horizontally long trapezoidal plate body 51 located on the vehicle front side and three pieces located on the vehicle rear side. The body 52 is composed of two parts.

  First, as shown in FIG. 7, the plate body 51 is formed by bending a side panel joining flange 51 a at the vehicle rear side at the outer end, forming a bent flange 51 b at the lower end, and further forming at the upper end. The protruding joint flange 5a described above is formed. Among these, the plate body 51 is joined to the side panel 3 by joining the side panel joining flange 51 a to the vehicle inner side surface of the side panel 3.

  Further, the plate body 51 has a bending flange 51b formed so as to extend in the vehicle width direction, thereby increasing the rigidity in the vehicle width direction.

  On the other hand, as shown in FIG. 5, the bracket body 52 is formed by bending a frame side surface joining flange 52 a to the vehicle rear side at the inner end portion and bending a frame lower surface joining flange 52 b to the vehicle rear side at the lower end portion, Furthermore, the three-piece part is comprised by bending and forming the floor joining flange 52c to the vehicle rear side in the upper end part. Among these, the bracket body 52 is coupled to the rear side frame 1 by joining the frame side surface joining flange 52 a and the frame bottom surface joining flange 52 b to the vehicle outer side surface 1 a and the bottom surface 1 b of the rear side frame 1.

  The bracket body 52 and the plate body 51 formed in this manner are overlapped and joined to form the connecting plate member 5 so that the rear side frame 1 and the side panel 3 extend in the vehicle width direction and are connected. It is configured.

  Then, the connecting plate member 5 extending in the vehicle width direction is joined and fixed to the lower end edge 2b at the rear of the wheel house inner 2 via the protruding joint flange 5a, so that the lower end edge 2a of the wheel house 2 Reinforcement is performed.

  Further, as shown in FIG. 3, the connecting plate member 5 has its vertical height h set to be substantially the same as the vertical height H of the rear side frame 1. Thereby, the rigidity of the connection plate member 5 is ensured to the maximum without causing the connection plate member 5 to protrude downward from the rear side frame 1.

Further, as shown in FIG. 6, a side floor panel 9 that extends in a horizontal plane is provided at the vehicle rear position of the connecting plate member 5. The side floor panel 9 is installed at a position behind the wheel house inner 2 so as to constitute a floor surface at the vehicle rear position of the wheel house inner 2. Further , a front end joint flange 9a bent downward is formed at the front end portion, and an outer end joint flange 9b bent downward is formed at the outer end portion.

As shown in FIG. 6, the bracket body 52 of the connecting plate member 5 is also joined to the side floor panel 9 via a floor joining flange 52c. For this reason, the connection plate member 5 is more firmly fixed, and the lower end edge 2b of the wheel house inner 2 can be reinforced. Further, the suspension load input from Riadan path 1 0 of the attachment portion 11, not only the rear side frame 1 and the side panels 3, in the side floor panel 9 can be distributed and transmitted.

Moreover, each joining part of this connection plate member 5 is comprised as follows so that joint strength may be raised more.
First, as shown in FIGS. 7 and 8, at the joint portion between the connecting plate member 5 and the rear side frame 1, the vehicle side surface 1a and the bottom surface 1b of the rear side frame 1 are joined by the frame side surface joining flange 52a and the frame bottom surface joining flange 52b. Bonded to two sides. As a result, not only the vehicle outer side surface 1a of the rear side frame 1 but also the lower surface 1b are joined, so that the joint strength with the rear side frame 1 where the load tends to concentrate is increased in the vertical direction, and the connecting plate is surely connected. The member 5 can be joined and fixed.

Each joining flange 52a, (shown by hatching) bonding area 52b as well, as is joined to the rear side frame 1 in the widest possible range, the frame side joining flange 52a, a wide bonded area in the vertical and longitudinal direction of the vehicle Further, in the frame lower surface joining flange 52b, a joining area that is long in the vehicle front-rear direction is set. Thereby, the joining strength of the connection plate member 5 with respect to the rear side frame 1 can further be improved.

On the other hand, in the joint portion between the connecting plate member 5 and the side panel 3, as shown in FIG. 9, the side panel joint flange 51 a is sandwiched between the outer end joint flange 9 b of the side floor panel 9 and the side panel 3. It is joined. Thereby, in the joint part of the side panel 3 where the load is likely to concentrate, the side panel joint flange 51a of the connecting plate member 5 is firmly joined to the both sides by the side floor panel 9 and the side panel 3, The connecting plate member 5 is surely joined and fixed.
Therefore, the connecting plate member 5 can be firmly joined and fixed at the joint portion with the side panel 3 .

In addition, a structure that increases the bonding strength is also adopted at the joint portion between the connecting plate member 5 and the side floor panel 9. Specifically, as shown in FIG. 10, the floor joining flange 52c of the bracket body 52 is joined to the side floor panel 9 at the vehicle width direction inner position, and the vehicle width direction outer position is shown in FIG. as shown, by joining the front joint flange 9a of the side floor panel 9 in the plate body 51, it is in substantially the entire region of the connecting plate member 5 by bonding the connecting plate member 5 to the side floor panel 9. Thereby, the connection plate member 5 will be reliably joined also to the side floor panel 9, and it can fix the position more reliably.

  As shown in FIG. 10, a front end upper joint flange 9 c that is bent upward is formed at the front end of the side floor panel 9. This front end upper joining flange 9c is formed by bending in the opposite direction to the aforementioned front end joining flange 9a.

  The front end upper joining flange 9 c is also joined to the rear lower end edge 2 b of the wheel house inner 2. Thereby, the lower end edge part 2b extended in the vehicle width direction of the wheel house inner 2 will be directly joined also to the side floor panel 9, and the rigidity of the lower end edge part 2b of a wheel house can be improved more.

  Although not shown, the wheel house inner 2 of the present embodiment also secures the rigidity of the wheel house by joining the inner end of the wheel house inner 2 in the vehicle width direction to the rear side frame 1.

Next, the effect of this embodiment comprised as mentioned above is explained in full detail.
The rear vehicle body structure of the vehicle according to this embodiment includes a rear side frame 1 extending in the vehicle front-rear direction, a wheel house inner 2 that is disposed at an outer position in the vehicle width direction of the rear side frame 1 and bulges toward the vehicle inner side, A vehicle body structure including a side panel 3 that is disposed at an outer position in the vehicle width direction of the wheel house inner 2 and forms a side wall of the vehicle body, and has a lower edge 2b that extends in the vehicle width direction at the lower end of the wheel house inner 2. A connecting plate member 5 extending in the vehicle width direction and connecting the rear side frame 1 and the side panel 3 is provided between the rear side frame 1 and the side panel 3, and the connecting plate member 5 is connected to the lower edge of the wheel house inner 2. It is joined to the part 2b.

According to this configuration, the connecting plate member 5 that extends in the vehicle width direction and connects the rear side frame 1 and the side panel 3 reinforces the lower end edge 2b of the wheel house inner 2 that extends in the vehicle width direction.
For this reason, the lower end edge 2b extending in the vehicle width direction of the wheel house inner 2 is fixed to the vehicle body side member by the connecting plate member 5, and high rigidity can be obtained.
Therefore, in the rear body structure of the vehicle including a wheel house that accommodates the rear wheel, the rigidity of the lower end edge 2b of the wheel house inner 2 is increased, the torsional rigidity of the vehicle body is increased, and the vehicle operability is improved. be able to.
In particular, since the lower end edge 2b on the vehicle rear side is fixed by the connecting plate member 5, the torsional rigidity of the vehicle body is ensured because the wheel house portion at the outer rear end, which is the corner portion of the vehicle body, does not twist. Can be improved.

  Further, since the lower end edge 2b of the wheel house inner 2 is fixed by the connecting plate member 5 extending in the vehicle width direction even in a side collision of the vehicle, the vehicle width direction of the lower end edge 2b of the wheel house inner 2 is fixed. Rigidity increases and the side impact performance of the vehicle can also be improved.

In addition, although the connection plate member 5 of this embodiment is installed so that it may extend in an up-down direction, if it extends in the vehicle width direction and connects the rear side frame 1 and the side panel 3, for example, a connection plate You may install a member so that it may extend in a horizontal direction.
Moreover, although the connection plate member 5 of this embodiment was demonstrated by what was installed in the vehicle rear side of the wheel house, it is not limited to this, You may install in the vehicle front side.

  Furthermore, the connection structure of the connecting plate member 5 and the lower end edge 2b of the wheel house inner 2 is not limited to welding fixing as in the present embodiment, but is fastening fixing and fitting fixing with bolts and nuts. Also good.

Further, in this embodiment, in the vicinity of the lower edge 2b of the wheel house inner 2, is provided with a mounting portion 11 for mounting the Riadan path 10.
Thus, the mounting portion 11 of Riadan Pas 1 0, be provided on the vehicle rear side of the wheel house inner 2 the layout requirements of the vehicle, the lower edge portion 2b of the wheel house inner 2 is reinforced by the connecting plate member 5 it from the input load from Riadan Pa 1 0 acting on the mounting portion 11, is dispersed and transmitted to the rear side frame 1 and the side panel 3, thereby preventing the wheel house is easily displaced.
Therefore, it is possible to prevent deterioration of the driving stability of the vehicle by the mounting portion 11 of Riadan Pas 1 0 is displaced.
Incidentally, in addition to the mounting portion 11 of Riadan Pas 1 0, a mounting portion such as a coil spring or suspension link may be set in the vicinity of the lower edge 2b of the wheel house inner 2.

Further, in this embodiment, the coupling between the connecting plate member 5 and the rear side frame 1 is performed on the vehicle outer side surface 1 a and the lower surface 1 b of the rear side frame 1.
For this reason, it is possible to increase the coupling strength of the coupling portion between the connecting plate member 5 and the rear side frame 1 where the load tends to concentrate, and the load input to the coupling plate member 5 is applied to the outer side surface 1a and the lower surface 1b of the rear side frame 1. It can be distributed on two sides and transmitted.
Therefore, the reinforcing function of the connecting plate member 5 can be further enhanced.

In this embodiment, the connecting plate member 5 includes a plate body 51 and a bracket body 52, and is coupled to the vehicle outer side surface 1 a and the lower surface 1 b of the rear side frame 1 by the bracket body 52.
As a result, the connecting plate member 5 is composed of two parts, a plate body 51 and a bracket body 52, and of these, the bracket body 52 is coupled to the vehicle outer side surface 1 a and the lower surface 1 b of the rear side frame 1.
For this reason, the connecting plate member 5 that has to be complicated in shape by being coupled to the vehicle outer side surface 1a and the lower surface 1b of the rear side frame 1 and to the side panel 3 and the lower end edge 2b of the wheel house inner 2 is provided. By constituting with parts, press molding can be easily performed, and the formability of the connecting plate member 5 can be ensured. Further, by joining the two surfaces of the rear side frame 1 with the bracket body 52, the coupling strength between the connecting plate member 5 and the rear side frame 1 can be increased.

In this embodiment, a side floor panel 9 extending in a horizontal plane is provided at the vehicle rear position of the connection plate member 5, and the side floor panel 9 is coupled to the connection plate member 5.
For this reason, the connecting plate member 5 is also coupled to the side floor panel 9 located at the vehicle rear position, and the input load can be distributed and transmitted to the side floor panel 9 as well. The rigidity of the lower end edge 2b of 2 can be improved.

In this embodiment, the side panel joining flange 51 a of the connecting plate member 5 is sandwiched and coupled between the side panel 3 and the side floor panel 9.
As a result, the connecting plate member 5 is sandwiched and joined between the side panel 3 and the side floor panel 9, so that the coupling strength of the connecting portion on the side panel 3 side of the connecting plate member 5 on which the load tends to concentrate is increased. The rigidity of the lower end edge 2b of the wheel house inner 2 can be further increased.

In this embodiment, the vertical height h of the connecting plate member 5 is set to substantially coincide with the vertical height H of the rear side frame 1.
As a result, since the vertical height h of the connecting plate member 5 substantially matches the vertical height H of the rear side frame 1, the rigidity of the connecting plate member 5 is reduced while preventing the connecting plate member 5 from protruding downward in the vehicle. You can get as much as possible.
Further, since the height positions coincide with each other at the time of a side collision of the vehicle, the connecting plate member 5 contacts the rear side frame 1 evenly in the vertical direction and deforms, so that the connecting plate member 5 effectively collides. The load can be absorbed.

  Next, a second embodiment will be described with reference to FIG. In addition, this figure is a downward detailed perspective view corresponding to FIG. 5 of 1st embodiment, About the same component, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In this embodiment, the bracket body 152 of the connecting plate member 5 is formed in a shape having two pieces of a frame side surface joining flange 152a and a frame lower surface joining flange 152b extending to the rear side frame 1 side, and is connected to the side floor panel 9 side. It is composed of a material that does not form a joining flange.

Thus, by comprising the bracket body 152, press molding becomes easy and the moldability of the connection plate member 5 can be improved. Moreover, since it is not necessary to consider the joining relationship (positional relationship) with the side floor panel 9 so much, the assembling work when joining the connecting plate member 5 can be easily performed.
Other functions and effects are the same as those in the first embodiment.

  As another embodiment, although not specifically illustrated, it is conceivable that the connecting plate member itself is constituted by one part instead of two parts. In this case, the shape of the connecting plate member, such as the shape of the joining flange, is limited by press molding or the like, but the number of parts of the connecting plate member itself can be reduced and the weight can be reduced. Can do.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The side frame of the present invention corresponds to the rear side frame 1 of the embodiment,
Similarly,
The wheel house corresponds to the wheel house inner 2,
The plate member corresponds to the connecting plate member 5,
The damper corresponds to the rear damper 10,
The main plate corresponds to the plate body 51,
The sub bracket corresponds to the bracket bodies 52 and 152,
The floor panel corresponds to the side floor panel 9,
The present invention is not limited to the above-described embodiment, but includes an embodiment applied to the rear body structure of any vehicle.

The lower perspective view which looked at the inside of the wheel house of the vehicle rear part of a first embodiment from the front slanting lower part. The side view in the state which made the side outer panel permeate | transmit the vicinity of the wheel house of a vehicle rear part. The front view from the vehicle front of the state cut | disconnected by the AA line of FIG. The detailed perspective view from the vehicle front side of the vehicle body structure near a connection plate member. The detailed lower perspective view from the vehicle rear side of the vehicle body structure near the connecting plate member. The lower detailed perspective view from another angle of the vehicle body structure near the connecting plate member. The upper perspective view from the vehicle width direction inner side in the state which removed the floor panel of the vehicle rear part and permeate | transmitted the rear side frame. The lower perspective view from the vehicle width direction inner side in the state which permeate | transmitted the rear side frame. FIG. 3 is a sectional view taken along line B-B in FIG. 2. FIG. 4 is a cross-sectional view taken along line CC in FIG. 3. The DD sectional view taken on the line of FIG. The lower detailed perspective view of 2nd embodiment corresponding to FIG.

1 ... Rear side frame (side frame)
2 ... Wheel House Inner (Wheel House)
2b ... lower edge 3 ... side panel 5 ... connecting plate member (plate member)
5a ... protruding joint flange 9 ... side floor panel 10 ... rear damper (damper )
11 ... Mounting part 51 ... Plate body (main plate)
52, 152 ... Bracket body (sub bracket)
S ... Rear wheel suspension system

Claims (6)

A side frame extending in the vehicle longitudinal direction;
A wheel house that is disposed substantially above the side frame and at an outer position in the vehicle width direction and bulges toward the vehicle inner side, and an inner end in the vehicle width direction is joined to the side frame ;
A vehicle rear body structure comprising a side panel disposed at an outer position in the vehicle width direction of the wheel house and forming a side wall of the vehicle body,
The lower end of the wheel house has a lower end edge extending outward in the vehicle width direction from the vicinity of the upper end of the side frame ,
A plate member extending in the vehicle width direction and connecting the side frame and the side panel is provided between the side frame and the side panel,
Against the upper portion of the plate member to the lower edge portion of the wheel house, bonded overlapping surfaces extending one above the other in the vehicle width direction outer side than the side frame,
The lower part of the plate member is joined to the lower surface of the side frame with overlapping surfaces extending in the vehicle width direction,
A rear vehicle body structure of a vehicle, wherein an attachment portion for attaching a damper of a rear wheel suspension device for suspending a rear wheel is provided in the vicinity of a lower end edge portion of the wheel house . The vehicle rear body structure according to claim 1, wherein the plate member and the side frame are coupled to each other on a side surface and a lower surface of the side frame. The plate member is composed of a main plate and a sub bracket,
The rear body structure of a vehicle according to claim 2, wherein the rear bracket is coupled to a side surface and a lower surface of the side frame by the sub bracket. A floor panel extending in a horizontal plane is provided at the vehicle longitudinal direction position of the plate member,
The rear body structure of the vehicle according to any one of claims 1 to 3, wherein the floor panel is coupled to the plate member. The rear body structure of the vehicle according to claim 4 , wherein the side panel side end portion of the plate member is sandwiched and coupled between the side panel and the floor panel. The plates vertical height of the member, the rear body structure for a vehicle according to the vertical direction height of the claims 1 to 5 any one set to substantially match the side frame.

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