JP5852623B2 - Body structure - Google Patents

Description

  The present invention relates to a vehicle body structure of a vehicle having a sliding door.

  The vehicle body structure includes a side sill provided at a side edge of the vehicle body, and a cross member extending in the left-right direction of the vehicle. The cross member is disposed on the upper surface of the floor panel, and one end of the cross member is Some are joined to the side of the side sill (see, for example, Patent Document 1).

  In the conventional vehicle body structure described above, the load acting on the side sill at the time of a side collision can be supported by the cross member.

Japanese Patent No. 4715341

  In the above-described conventional vehicle body structure, since the side sill protrudes greatly upward from the floor panel, the cross member can be joined to the side surface of the side sill. Therefore, if the side sill is lowered to substantially the same height as the floor panel in consideration of the ease of getting on and off passengers in the automobile and the expansion of the vehicle interior space, there is a problem that the above-described vehicle body structure cannot be applied.

  In addition, when the floor of the vehicle body is lowered, a large load is applied above the floor at the time of a side collision. In the vehicle body structure described above, when a large load is applied above the floor, it is difficult to support the large load by the cross member provided on the upper surface of the floor panel.

  An object of the present invention is to solve the above-described problems and to provide a vehicle body structure that can increase the strength against a load caused by a side collision while lowering the floor.

In order to solve the above-described problems, the present invention provides a vehicle body structure, a floor frame extending in the vehicle front-rear direction, and disposed on the vehicle outer side with respect to the floor frame, and extends along the floor frame. And side sills. In the side sill, an accommodation space for a rail for a slide door is formed, an upper portion of the accommodation space is covered by an upper plate member, an upper plate of the side sill is configured by the upper plate member, and the upper plate member is It is arrange | positioned lower than the upper surface of the said floor frame . A flange disposed lower than the upper surface of the floor frame is formed on the side surface of the floor frame on the vehicle outer side. The fixed portion of the upper plate member is joined to the flange of the floor frame.

In this configuration, the load caused by the side collision is transmitted from the side sill to the floor frame through the fixed portion and dispersed. Further, since the upper plate member of the side sill is joined to the floor frame, the side sill can be disposed at substantially the same height as the floor frame.
Therefore, in the vehicle body structure of the present invention, the strength of the vehicle body against a load caused by a side collision can be increased by using the existing members of the vehicle body while making the floor as low and flat as possible.

In the vehicle body structure described above, when the fixing portion of the upper plate member closes the opening in the upper part of the floor frame having a hollow structure , the vehicle body has sufficient strength and rigidity and the number of parts of the vehicle body The weight of the vehicle body can be reduced.

  When the vehicle body structure includes a pillar extending upward from the side sill, and a part of the upper plate member is disposed on the vehicle inner side with respect to the pillar, the upper plate member is moved to the pillar. It is desirable to join to.

  When the floor is lowered and a load is applied above the floor at the time of a side collision, the pillar receives the load. At this time, in the above-described configuration, the load due to the side collision is transmitted from the pillar to the floor frame through the fixing portion of the side sill, so that the strength of the pillar against the load due to the side collision can be increased.

  When the vehicle body structure includes a pillar extending upward from the side sill and a part of the upper plate member is disposed on the vehicle inner side with respect to the pillar, the pillar, the floor frame, It is desirable to dispose a reinforcing member between them and join the reinforcing member to the upper surface of the upper plate member and to the pillar and the floor frame. The reinforcing member may be joined to the pillar and the floor frame via the upper plate member.

  In this configuration, since the space between the pillar and the floor frame is reinforced, it is possible to suppress the deformation of the floor of the vehicle body when a load due to a side collision acts on the pillar. Further, since the load caused by the side collision is reliably transmitted to the floor frame through the side sill and the reinforcing member, the strength of the pillar against the load caused by the side collision can be increased.

  In the vehicle body structure described above, when the seat is connected to the reinforcing member, the seat can be firmly fixed to the vehicle body, so that the occupant seated on the seat is reliably protected in the event of a vehicle collision. Can do.

  When the vehicle body structure includes a pair of floor frames arranged side by side in the vehicle left-right direction and has a cross member spanned between the two floor frames, the cross member is It is desirable to join to the floor frame inside the vehicle with respect to the fixed portion.

  In this configuration, both floor frames are supported by the cross member, and the load transmitted from the side sill to the floor frame at the time of a side collision is transmitted to the other floor frame through the cross member. Therefore, the strength of the vehicle body against the load caused by the side collision can be further increased.

  In the vehicle body structure of the present invention, the strength of the vehicle body against a load caused by a side collision can be increased by using the existing members of the vehicle body while making the floor as low and flat as possible.

It is the perspective view which showed the vehicle body structure of this embodiment. It is the perspective view which expanded the side sill periphery of the vehicle body structure of this embodiment. It is the perspective view which expanded the intermediate part of the side sill of the vehicle body structure of this embodiment. FIG. 4 is a perspective view of a state where a reinforcing member is removed from the vehicle body structure of FIG. 3. It is the figure which showed the vehicle body structure of this embodiment, and is AA sectional drawing of FIG. It is the perspective view which showed the attachment structure of the vehicle body structure and seat of this embodiment. It is the perspective view which expanded the vehicle body structure and seat attachment structure of this embodiment.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
The vehicle body structure 1a of this embodiment is applied to the vehicle body 1 of an automobile having a slide door on the rear side, as shown in FIG.

The vehicle body structure 1 a includes a pair of left and right floor frames 2, 2 that extend in the longitudinal direction of the vehicle body, a cross member 3 that spans both floor frames 2, 2, and the floor frames 2, 2 and the cross member 3. The floor panel 4 is mainly provided.
The vehicle body structure 1a includes a pair of left and right side sills 10 and 10 disposed on the vehicle outer side with respect to the floor frames 2 and 2, and a pair of left and right center pillars 6 and 6 extending upward from the both side sills 10 and 10. And. A slide door opening 8 is formed between the center pillar 6 and the rear wheel house 7.
A floor 5 is formed by the floor frames 2 and 2, the cross member 3, the floor panel 4 and the side sills 10 and 10.
Furthermore, the vehicle body structure 1 a includes a reinforcing cross member 9 that is bridged between the floor frames 2 and 2 at a substantially central portion in the front-rear direction of the floor 5.

The vehicle body structure 1a of the present embodiment is formed by welding a plurality of members formed by pressing a high-tensile steel plate.
In addition, since the vehicle body structure 1a of this embodiment is a left-right symmetrical structure, in the following description, the configuration on the right side of the vehicle body structure 1a will be described, and the configuration on the left side of the vehicle body structure 1a will be omitted.

  As shown in FIG. 5, the floor frame 2 has a hollow structure with a rectangular cross section, and the upper surface of the floor frame 2 is disposed at substantially the same height as the upper surface of the floor panel 4.

  As shown in FIG. 1, the side sill 10 constitutes a side edge of the vehicle body 1 and extends in the vehicle front-rear direction along the floor frame 2. The side sill 10 is disposed between the front pillar (not shown) of the vehicle body 1 and the rear wheel house 7.

The center pillar 6 is extended upward from the outer surface of the intermediate portion 10a in the front-rear direction of the side sill 10. As shown in FIG. 4, the intermediate portion 10 a of the side sill 10 is disposed on the vehicle inner side with respect to the center pillar 6. That is, the intermediate portion 10 a of the side sill 10 enters between the center pillar 6 and the floor frame 2.
The upper surface of the intermediate portion 10a of the side sill 10 is disposed lower than the upper surface of the floor frame 2 between the center pillar 6 and the floor frame 2, as shown in FIG.

  As shown in FIG. 2, the side sill 10 forms a lower edge portion of the sliding door opening 8 between the center pillar 6 and the rear wheel house 7.

  As shown in FIG. 5, the side sill 10 is a member having a hollow structure. A housing space 11 is formed inside the side sill 10 between the center pillar 6 and the rear wheel house 7. The accommodating space 11 is a space for accommodating the rail 20 for the sliding door.

  The upper part of the accommodation space 11 is covered with an upper plate member 12. As shown in FIG. 1, the upper plate member 12 is disposed from the intermediate portion 10 a of the side sill 10 to the base end portion of the side sill 10. As shown in FIG. 5, the upper surface of the upper plate member 12 is disposed at substantially the same height as the upper surfaces of the floor frame 2 and the floor panel 4.

  As shown in FIG. 1, an opening 11 a is formed between the center pillar 6 and the rear wheel house 7 on the side of the side sill 10 outside the vehicle. That is, the accommodating space 11 is open to the outside of the vehicle between the center pillar 6 and the rear wheel house 7.

  A rail 20 is attached to the lower surface of the upper plate member 12 as shown in FIG. The rail 20 opens downward. As shown in FIG. 1, the rail 20 is extended from the intermediate part 10a of the side sill 10 to the rear-end part 10b.

  An arm (not shown) projecting from the wall surface of the sliding door (not shown) on the passenger compartment side is inserted into the accommodating space 11 through the opening 11a of the side sill 10, and is provided at the tip of the arm. Are coupled to the rail 20. Then, the sliding door can be opened and closed by the arm moving in the vehicle longitudinal direction along the rail 20.

  As shown in FIG. 4, a flange 12 a is raised at the front end of the upper plate member 12. The flange 12 a is superimposed on the side surface of the center pillar 6 on the vehicle inner side, and is welded to the side surface of the center pillar 6. Accordingly, the front end portion of the upper plate member 12 is joined to the center pillar 6.

A fixed portion 12 b extending toward the vehicle inner side is formed at the front end portion of the upper plate member 12. The fixing portion 12 b is formed higher than the upper surface of the upper plate member 12 and closes a part of the upper portion of the floor frame 2. That is, the fixed portion 12 b constitutes a part of the upper surface of the floor frame 2.
The fixed portion 12b is welded to the floor frame 2. Thereby, the front end portion of the upper plate member 12 (the intermediate portion 10a of the side sill 10) is joined to the floor frame 2.

  As shown in FIG. 3, a reinforcing member 30 is disposed between the center pillar 6 and the floor frame 2. The reinforcing member 30 is formed with an upper portion 31 and a pair of front and rear side portions 32 and extends in the vehicle left-right direction. As shown in FIG. 5, the upper surface of the reinforcing member 30 is disposed at substantially the same height as the upper surfaces of the floor frame 2 and the floor panel 4.

As shown in FIG. 3, flanges 30 a are formed on both edge portions and lower edge portions of the reinforcing member 30.
The lower flange 30 a of the reinforcing member 30 is welded to the upper surface of the upper plate member 12. Further, the flange 30 a on the center pillar 6 side of the reinforcing member 30 is welded to the flange 12 a of the upper plate member 12. Further, the flange 30 a on the floor frame 2 side of the reinforcing member 30 is welded to the fixing portion 12 b of the upper plate member 12.
Thereby, the lower part of the reinforcing member 30 is joined to the upper surface of the upper plate member 12. Further, both end portions of the reinforcing member 30 are joined to the center pillar 6 and the floor frame 2 via the upper plate member 12.

  As shown in FIG. 6, the reinforcing member 30 is a part to which a mounting portion S <b> 1 provided on the lower surface of the front seat S is attached. Brackets for fixing the front seat S to the floor 5 are provided at the front, rear, left and right corners of the lower surface of the front seat S. In the present embodiment, of the two rear brackets, the vehicle-side bracket S <b> 1 is attached to the reinforcing member 30. Other brackets are fixed by bolts in holes provided in the members constituting the floor 5.

  As shown in FIG. 3, in the upper portion 31 of the reinforcing member 30, a connecting hole 33 passes through an intermediate portion in the left-right direction. As shown in FIG. 7, a plate-like bracket S <b> 1 extending rearward from the lower surface of the front seat S is superimposed on the upper surface of the reinforcing member 30, and the through hole S <b> 2 and the connection hole formed in the bracket S <b> 1. The bracket S <b> 1 is fixed to the upper surface of the reinforcing member 30 by the bolt B inserted through the 33.

  Since the upper surface of the reinforcing member 30 is disposed at substantially the same height as the upper surfaces of the floor frame 2 and the floor panel 4 (see FIG. 5), the mounting portion S1 is also approximately the same height as the upper surfaces of the floor frame 2 and the floor panel 4. Arranged. Therefore, the front seat S can be disposed at a low position in the vehicle interior.

  The reinforcing cross member 9 is arranged on the lower surface of the floor panel 4 as shown in FIG. The cross member 9 is joined to the side surface of the floor frame 2 on the vehicle inner side with respect to the fixing portion 12b of the upper plate member 12 (see FIG. 5).

In the vehicle body structure 1a as described above, as shown in FIG. 3, the load applied to the side sill 10 at the time of a side collision is transmitted to the floor frame 2 through the fixing portion 12b of the side sill 10 and dispersed.
Further, when the center pillar 6 receives a load due to a side collision, the load is transmitted to the floor frame 2 through the fixing portion 12b of the side sill 10 and the reinforcing member 30, and therefore the strength of the center pillar 6 with respect to the load due to the side collision. Can be increased. Further, since the space between the center pillar 6 and the floor frame 2 is reinforced, it is possible to prevent the floor 5 of the vehicle body 1 from being deformed when a load due to a side collision acts on the center pillar 6.
In addition, as shown in FIG. 2, both floor frames 2 and 2 (see FIG. 1) are supported by the reinforcing cross member 9, and the load transmitted from the side sill 10 to one floor frame 2 at the time of a side collision is as follows: It is transmitted to the other floor frame 2 through the cross member 9.

  Further, in the vehicle body structure 1a, as shown in FIG. 5, the upper plate member 12 of the side sill 10 is joined to the upper part of the floor frame 2, so that the upper surface of the side sill 10 is approximately the same height as the upper surface of the floor frame 2. Can be arranged. Furthermore, the upper surface of the reinforcing member 30 is disposed at substantially the same height as the upper surfaces of the floor frame 2 and the floor panel 4.

  Therefore, in the vehicle body structure 1a of the present embodiment, as shown in FIG. 3, an existing member of the vehicle body 1 is used while the floor 5 including the floor frame 2, the floor panel 4, and the side sill 10 is configured as low and flat as possible. Thus, the strength of the vehicle body 1 against the load caused by the side collision can be increased.

  Further, in the vehicle body structure 1a, the fixing portion 12b of the side sill 10 constitutes a part of the upper surface of the floor frame 2, so that the strength and rigidity of the vehicle body 1 are sufficiently secured and the number of parts of the vehicle body 1 is reduced. Thus, the vehicle body 1 can be reduced in weight.

  Further, in the vehicle body structure 1a, as shown in FIG. 7, the front seat S is coupled to the reinforcing member 30, and the front seat S can be firmly fixed to the vehicle body 1. The occupant seated on the seat S can be reliably protected.

The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.
In the present embodiment, as shown in FIG. 4, the upper plate member 12 is joined to the center pillar 6, but the upper plate member 12 may not be welded to the center pillar 6.

  Further, in the present embodiment, as shown in FIG. 3, the reinforcing member 30 is joined to the center pillar 6 and the floor frame 2 via the flange 12 a of the upper plate member 12. You may weld directly to the floor frame 2. FIG.

  In the present embodiment, the reinforcing member 30 is disposed between the center pillar 6 and the floor frame 2, but the reinforcing member 30 may not be disposed.

  In the present embodiment, the fixing portion 12 b of the upper plate member 12 of the side sill 10 forms a part of the upper surface of the floor frame 2, but the fixing portion 12 b of the upper plate member 12 is joined to the side surface of the floor frame 2. May be.

DESCRIPTION OF SYMBOLS 1 Car body 1a Car body structure 2 Floor frame 4 Floor panel 5 Floor 6 Center pillar 7 Rear wheel house 8 Slide door opening part 9 Cross member 10 Side sill 10a Middle part of side sill 11 Housing space 12 Upper plate member 12a Flange 12b Fixing part 20 Rail 30 Reinforcing member 30a Flange 33 Connecting hole S Front seat S1 Bracket S2 Through hole B Bolt

Claims (6)

A floor frame extending in the longitudinal direction of the vehicle,
A side sill disposed on the vehicle outer side with respect to the floor frame and extending along the floor frame,
The side sill is formed with a storage space for a slide door rail,
The upper part of the accommodation space is covered by an upper plate member, and the upper plate member constitutes the upper plate of the side sill, and the upper plate member is disposed lower than the upper surface of the floor frame ,
A flange disposed lower than the upper surface of the floor frame is formed on the side surface of the floor frame outside the vehicle,
The fixed portion of the upper plate member, the vehicle body structure, characterized by being joined to the flange of the floor frame. A floor frame extending in the longitudinal direction of the vehicle,
A side sill disposed outside the vehicle with respect to the floor frame and extending along the floor frame;
A pillar extending upward from the side sill ,
The side sill is formed with a storage space for a slide door rail,
The upper part of the accommodation space is covered with an upper plate member,
The upper plate member is provided with a fixing portion joined to the floor frame ,
A part of the upper plate member is disposed inside the vehicle with respect to the pillar,
A reinforcing member is disposed between the pillar and the floor frame,
The reinforcing member is bonded to the upper surface of the upper plate member, and is bonded to the pillar and the floor frame . Wherein the fixing portion of the upper plate member, the vehicle body structure according to claim 1 or claim 2, characterized in that closes the upper opening of said floor frame having a hollow structure. Having a pillar extending upward from the side sill;
A part of the upper plate member is disposed inside the vehicle with respect to the pillar,
Vehicle body structure according to claim 1 or claim 3, characterized in that said upper plate member is joined to the pillar. The vehicle body structure according to claim 2 , wherein a sheet is connected to the reinforcing member. A pair of floor frames arranged side by side in the vehicle left-right direction,
A cross member spanned between the floor frames;
The vehicle body structure according to any one of claims 1 to 5, wherein the cross member is joined to the floor frame on the vehicle inner side with respect to the fixing portion of the side sill.

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