JP4876828B2 - Car side body structure - Google Patents

Description

  The present invention relates to an automobile including a rear pillar that extends in the vertical direction along a side portion of a rear opening formed at a rear portion of a vehicle body, and a rear wheel house that bulges inwardly of the vehicle body from a vehicle body side wall portion. This relates to the side body structure.

Conventionally, in Patent Document 1 below, in an automobile in which a rear opening that is opened by a back door is formed in the rear part of the vehicle body, an opening end portion of the rear wall of the vehicle body provided along the side part of the rear opening part and By connecting the rear wheel house inner side end portion with a connecting member made of a plate-like panel member extending substantially horizontally in the longitudinal direction of the vehicle body, the surface rigidity of the rear wall of the vehicle body is secured. A rear body structure of a vehicle configured to suppress deformation is disclosed.
JP 2005-199855 A

  As shown in the above-mentioned Patent Document 1, a connection formed by a plate-like panel member that extends substantially horizontally toward the front-rear direction of the vehicle body, the opening end portion of the rear wall of the vehicle body and the vehicle body inner side end portion of the rear wheel house. When configured to be connected by a member, the position of the opening end portion of the rear wall of the vehicle body is defined by the connection member, so that it is possible to suppress a reduction in surface rigidity of the rear wall of the vehicle body. However, for example, when the vertical dimension of the rear opening is large, it is difficult to effectively reinforce the entire rear opening even if a single connecting member made of the plate-like panel member is provided. There's a problem. Further, when the width dimension of the connecting member is increased, effective use of the vehicle interior space cannot be achieved, and there is a problem that it is difficult to sufficiently exert the reinforcing effect by providing the connecting member.

  The present invention has been made in view of the above-described problems, and is a side part of an automobile capable of sufficiently improving the rigidity of a vehicle body between a rear wheel house and a rear pillar installed at the rear part of the vehicle body with a simple configuration. The purpose is to provide a vehicle body structure.

According to a first aspect of the present invention, in a side body structure of an automobile, a rear pillar extending in a vertical direction along a side portion of a rear opening formed at a rear portion of the vehicle body, and an inner side of the vehicle body from the vehicle body side wall portion. bulging the rear wheel house, with a front end portion is fixed to the rear wheel house, and a gusset member which vertical dimension increases as extending to the rear, the rear end portion of the gusset member is connected to the rear pillar, the gusset The upper and lower end portions of the member are fixed to the vehicle body side wall portion, and the side surface portion of the gusset member positioned between the upper and lower end portions fixed to the vehicle body side wall portion is spaced apart from the vehicle body side wall portion, and the gusset member A rear side extending from the rear wheel house installation part and an upper side extending obliquely from the front end toward the rear upper part, and at the upper end of the gusset member A node member is provided to divide the interior of the rail up and down, and a mounting portion to which an upper end portion of a rear suspension strut damper device installed in a rearward inclined state is attached is provided at the rear portion of the rear wheel house. The front lower end of the gusset member is joined to the mounting portion .

The invention according to claim 2 is the vehicle side body structure according to the claim 1, the interior of the rear pillar located in the upper end portion of the gusset member, which retractor of the seat belt to protect the occupant are disposed It is.

According to a third aspect of the present invention, in the side body structure of an automobile according to the first or second aspect , a rear lower end portion of the rear wheel house and a lower end portion of the rear pillar are connected to a lower portion of the installation portion of the gusset member. In addition, a reinforcement that forms a closed cross section between the vehicle body side wall and the floor panel is provided.

In the invention according to claim 1, the rear end portion of the gusset member formed so as to spread rearward is joined to the rear pillar, and a portion extending over a predetermined length of the rear pillar is connected to the rear wheel house by the gusset member. Both the upper and lower ends are fixed to the side wall of the vehicle body, and the side surface portion of the gusset member is set apart from the side wall portion of the vehicle body. Since the rear pillar is reinforced at the upper and lower portions thereof by providing an upper side extending obliquely toward the rear upper part, the rear wheel house and the rear pillar can be effectively reinforced by the gusset member having a three-dimensional shape. Even when the opening area of the rear opening is large, the surface rigidity of the rear part of the vehicle body can be sufficiently ensured. By then transfer loads input from the strut damper device to the rear wheel house, etc. pillar dispersed support, it is possible to effectively prevent such inward falling of the rear wheel house, and after the vehicle collision or the like In addition, there is an advantage that a sufficient supporting rigidity against an impact load or the like input to the rear pillar can be secured, and deformation of the rear pillar can be effectively prevented.

In addition, a node member for vertically dividing the interior of the rear pillar is provided at a position corresponding to the upper end portion of the gusset member, and the upper end of the rear suspension strut damper device installed in a rearward tilt state at the rear portion of the rear wheel house. By attaching a front lower end portion of the gusset member to the attachment portion, an impact load or the like input to the rear pillar is received by the node member at the time of a rear collision of the vehicle. The strut damper device of the above-mentioned ya suspension can be further effectively prevented by preventing the deformation of the rear pillar by further effectively improving the reinforcing action of the rear pillar by the gusset member. The load input from the rear wheel house to the rear pillar is transmitted from the gusset member to the rear pillar and dispersed. By lifting, there is an advantage that deformation of the rear wheel house can be effectively prevented.

In the invention according to claim 2, in the interior of the rear pillar located in the upper end portion of the gusset member, because of the disposed retractor of the seat belt to protect the occupant, a load input from the seat belt retractor to be supported by the gusset There is an advantage that the support rigidity of the seat belt can be sufficiently secured.

According to the third aspect of the present invention, the lower portion of the rear end of the rear wheel house and the lower end of the rear pillar are coupled to the lower portion of the gusset member, and the closed cross section is provided between the vehicle body side wall and the floor panel. Since the formwork structure is formed by the rear wheel house, the rear pillar, the gusset member and the reinforcement, the vehicle body rigidity between the rear wheel house and the rear pillar installed at the rear of the vehicle body is provided. Can be improved dramatically.

  1 and 2 show an embodiment of a side body structure of an automobile according to the present invention. The side body structure of the automobile bulges from the rear pillar 2 extending in the vertical direction along the side portion of the rear opening 1 formed in the rear portion of the vehicle body and the inward side of the vehicle body from the vehicle body side wall portion 3. A rear wheel house 4 and a gusset member 5 having a front end portion fixed to the rear wheel house 4 are provided. A side opening 6 that is opened and closed by a rear side door such as a sliding door (not shown) is formed in the vehicle body side wall 3, and an opening 7 in which a rear window glass is installed is formed at the rear upper part thereof. ing.

  As shown in FIGS. 3 and 4, the rear pillar 2 has a rear pillar outer 8 formed integrally with the outer panel 3 a of the vehicle body side wall portion 3, and a front side portion at the rear end portion of the inner panel 3 b of the vehicle body side wall portion 3. It has a connected rear pillar inner 9. Further, as shown in FIGS. 4 and 5, a node member 10 that vertically partitions the interior of the rear pillar 2 in the vicinity of the upper end portion of the gusset member 5 is disposed in the rear pillar 2. A seat belt retractor 11 for protecting an occupant is disposed above the installation portion of the node member 10, that is, in the vicinity of the upper end of the gusset member 5. It is attached to the rear pillar inner 9.

  The node member 10 includes a vehicle inner flange 12 joined to the rear pillar inner 9, an upper wall portion 13 extending from the upper end portion to the vehicle outer side, and a vehicle outer flange 14 extending downward from the outer side portion thereof. The vehicle outer flange 14 is joined to the rear pillar outer 8. A rear end flange 15 that is joined to the inner wall surface of the rear end of the rear pillar 2 is provided at the rear end of the node member 10. In addition, a predetermined gap 16 is formed between the front end portion of the node member 10 and the rear pillar 2 in consideration of the assembly property of the node member 10 and the like.

A mounting portion 18 to which a rear suspension strut damper device 17 is attached is provided at a rear portion of the rear wheel house 4, and a front lower end portion of the gusset member 5 is joined in the vicinity of the mounting portion 18. The gusset member 5, as shown in FIGS. 6 and 7, a bottom portion 19 extending rearwardly from the installation portion of the Li Ya wheel house 4 and a upper portion 20 extending obliquely toward the rear upward from its front end And a rear side portion 21 extending in the vertical direction along the rear pillar 2, thereby increasing the vertical dimension toward the rear and forming a substantially triangular fan shape having an open center.

  The bottom side portion 19 of the gusset member 5 includes a lower end flange 22 joined to the inner panel 3b of the vehicle body side wall portion 3, a bottom wall portion 23 having a predetermined width protruding from the upper end portion toward the vehicle interior, and an inner end portion thereof. And a side portion 24 having a predetermined width extending upward. Further, the upper side portion 20 of the gusset member 5 includes an upper end flange 25 joined to the inner panel 3b of the vehicle body side wall portion 3, an upper wall portion 26 having a predetermined width protruding from the lower end portion toward the vehicle interior, and an inner end thereof. And a side part 27 having a predetermined width extending downward from the part.

  And the upper end part of the gusset member 5 consisting of the upper end flange 25 of the upper side part 20 and the lower end part of the gusset member 5 consisting of the lower end flange 22 of the bottom side part 19 are fixed to the inner panel 3b of the vehicle body side wall part 3, By fixing the front end portion 23a of the bottom wall portion 23 and the front end portion 24a of the side surface portion 24 to the rear portion of the rear wheel house 4 (see FIGS. 3 and 5), the side surface portion 27 and the bottom side portion of the upper side portion 20 are obtained. The side surface portion of the gusset member 5 including 19 side surface portions 24 is installed in a state of being separated from the inner panel 3 b of the vehicle body side wall portion 3.

  Further, the rear side portion 21 of the gusset member 5 is joined to the inner wall surface of the front end portion of the rear pillar inner 9 so that the rear end portion of the gusset member 5 is fixed to the rear pillar 2 over a predetermined vertical dimension. The rear portion of the rear wheel house 4 and the front portion of the rear pillar 2 are connected via the gusset member 5.

  Below the installation portion of the gusset member 5 is a floor panel that connects the lower part of the rear end of the rear wheel house 4 and the lower end of the rear pillar 2 and constitutes the vehicle body side wall 3 and the bottom surface of the rear of the vehicle body. The reinforcement 29 which forms the closed cross section 34 between 28 is provided. The reinforcement 29 includes an upper end flange 30 fixed to the inner panel 3b of the vehicle body side wall part 3, an upper wall part 31 extending from the lower end part toward the vehicle interior, and a side wall part 32 extending downward from the inner end part. The lower end flange 33 is provided so as to protrude from the lower end portion toward the vehicle inner side and is fixed to the upper surface of the floor panel 28. In FIG. 7, reference numeral 35 denotes a rear side frame that extends in the front-rear direction of the vehicle body along the lower surface of the side portion of the floor panel 28.

  The lower portion of the rear wheel house 4 and the lower end of the rear pillar 2 are formed by the inner panel 3b and the floor panel 28 of the vehicle body side wall 3 and the upper wall 31 and the side wall 32 of the reinforcement 29. A closed section 34 extending in the front-rear direction of the vehicle body is formed. Further, as shown in FIG. 2, an extension portion 32a extending to the rear side of the vehicle body is formed at the rear end portion of the side wall portion 32 along the lower inner surface of the rear pillar 2, and this extension portion 32a is formed in the rear pillar inner portion. 9 is joined to the lower end.

  The rear pillar 2 extending in the vertical direction along the side portion of the rear opening 1 formed in the rear part of the vehicle body as described above, and the rear wheel house 4 bulging from the vehicle body side wall part 3 to the inward side of the vehicle body, When the front end is fixed to the rear wheel house 4 and a gusset member 5 whose vertical dimension increases as it goes rearward is provided, and the rear end of the gusset member 5 is connected to the rear pillar 2. The vehicle body rigidity between the rear wheel house 4 and the rear pillar 2 installed at the rear of the vehicle body with a simple configuration can be effectively improved.

  That is, the rear end portion of the gusset member 5 formed in a fan-like shape or the like is joined to the rear pillar 2, and a portion of the rear pillar 2 extending over a predetermined length is connected to the rear wheel house 4 by the gusset member 5. Since the rear pillar 2 and the rear wheel house 4 are reinforced, the surface rigidity of the rear portion of the vehicle body can be sufficiently ensured even when the opening area of the rear opening 1 is large. In addition, the load input to the rear wheel house 4 from the strut damper device 17 of the suspension is transmitted to the rear pillar 2 from the gusset member 5 and dispersedly supported, so that the rear wheel house 4 is effectively tilted. There is an advantage that can be prevented.

Further, upper and lower end portions of the upper outs setting member 5, i.e. the lower end flange 22 of the upper flange 25 and the bottom portion 19 of the upper side portion 20, is fixed to the vehicle body side wall 3, which is fixed to the vehicle body side wall 3 Since the side surface portion of the gusset member 5 composed of the side surface portion 27 of the upper side portion 20 and the side surface portion 24 of the bottom side portion 19 located between the upper and lower end portions is set apart from the vehicle body side wall portion 3, a predetermined vertical dimension and The gusset member 5 having a three-dimensional shape having a width dimension has an advantage that the rear wheel house 4 and the rear pillar 2 can be effectively reinforced and their rigidity can be sufficiently improved.

Further, the upper Kiga setting member 5, a bottom portion 19 extending rearwardly from the installation portion of the rear wheel house 4, by providing the upper side portion 20 extending obliquely toward the rear upward from its front end, a rear pillar 2 Since it is reinforced at the upper and lower portions, it is possible to sufficiently secure the support rigidity against the impact load and the like input to the rear pillar 2 at the time of rear-end collision of the vehicle and effectively prevent the rear pillar 2 from falling over. There are advantages such as.

Further, as described above, due to the provision of the section member 10 for partitioning the inside at the upper end vicinity of the rear pillar 2 of the gusset member 5 up and down, the collision or the like after the vehicle, impact load or the like input to the rear pillar 2 the Ki de be transferred to the installation portion of the gusset member 5 by the section member 10, the reinforcing effect of the rear pillar 2 by the gusset member 5, more effectively improved by the variations thereof can be more effectively prevented There is an advantage.

  Further, as shown in the above embodiment, when the seat belt retractor 11 for protecting the occupant is disposed in the rear pillar 2 located in the vicinity of the upper end portion of the gusset member 5, the seat belt is input to the retractor 11. Since the applied load can be supported by the gusset member, there is an advantage that the support rigidity of the seat belt can be sufficiently secured.

  Moreover, in the said embodiment, as shown in FIG.5 and FIG.7, while installing the rear-end part lower part of the rear wheel house 4 and the lower end part of the rear pillar 2 below the installation part of the gusset member 5, it is vehicle body side wall. Since the reinforcement 29 that forms the closed section 34 is provided between the portion 3 and the floor panel 28, a formwork structure is formed by the rear wheel house 4, the rear pillar 2, the gusset member 5, and the reinforcement 29. become. Therefore, the vehicle body rigidity between the rear wheel house 4 and the rear pillar 2 installed at the rear of the vehicle body can be dramatically improved.

It is a perspective view which shows embodiment of the side part vehicle body structure of the motor vehicle based on this invention. It is a side view which shows the structure of the vehicle interior side part of a side part vehicle body. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is a partial notch perspective view which shows the structure of a gusset member. It is the VII-VII sectional view taken on the line of FIG.

DESCRIPTION OF SYMBOLS 1 Rear opening part 2 Rear pillar 3 Car body side wall part 4 Rear wheel house 5 Gusset member 10 Node member 11 Retractor 19 Bottom part 20 Upper side part 24,27 Side part 28 Floor panel 29 Reinforcement 34 Closed cross section

Claims (3)

In a side body structure of an automobile, a rear pillar extending in a vertical direction along a side portion of a rear opening formed at a rear portion of the vehicle body, and a rear wheel house bulging from a side wall portion of the vehicle body to an inner side of the vehicle body A gusset member whose front end is fixed to the rear wheel house and whose vertical dimension increases toward the rear. The rear end of the gusset member is connected to the rear pillar, and the upper and lower ends of the gusset member are side walls of the vehicle body. The side portion of the gusset member located between the upper and lower end portions fixed to the vehicle body side wall portion is installed apart from the vehicle body side wall portion, and the gusset member is attached to the rear wheel house from the installation portion of the rear wheel house. A bottom side portion extending rearward and an upper side portion extending obliquely from the front end portion toward the rear upper portion are provided. A node member that divides the interior of the rear pillar vertically is provided on the rear pillar. The rear wheel house is provided at a position corresponding to the upper end portion of the rear member, and a mounting portion to which the upper end portion of the rear suspension strut damper device installed in a rearward tilted state is provided. A side body structure of an automobile, wherein a front lower end portion of the gusset member is joined to a portion. Inside a rear pillar which is located at an end portion on the gusset member, an automobile side body structure of claim 1 in which the retractor of the seat belt to protect the occupant, characterized in that disposed. A reinforcement that forms a closed cross section between the vehicle body side wall and the floor panel is provided below the rear portion of the rear wheel house and the lower end of the rear pillar at the lower portion of the installation portion of the gusset member. The side body structure of an automobile according to claim 1 or 2.

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