JP6132604B2 - Open car side body structure - Google Patents

Description

  The present invention relates to a side vehicle body structure for an open car that can suppress deformation and entry of a vehicle body side portion into a vehicle interior due to a collision load during a side collision (hereinafter referred to as a side collision).

  As a side body structure of an open car that suppresses deformation and entry into the vehicle interior of the side part of the side body having a side collision, there is a structure described in Patent Document 1, for example. In this conventional structure, a bulk member is disposed inside the pillar member, the bulk member and the floor panel are connected by a brace member, and seated on at least one of the brace member and the bulk member by a collision load at the time of a side collision. A buckling deformation permitting portion that allows bending deformation is formed, and in the case of a side collision, the pillar member is bent into a generally square shape to absorb a side collision load and suppress deformation intrusion into the vehicle interior. .

JP 2012-206693 A

  In the conventional structure, the pillar member is folded into a square shape by a side impact load. However, in a small vehicle, it is difficult to secure a space for folding into a square shape, and thus the structure cannot be adopted. There is a case. In such a small vehicle, contrary to the conventional structure, there is no choice but to increase the rigidity of the pillar member by increasing the bulk member or brace member in the pillar member so that the pillar member does not bend, and the vehicle weight and cost are increased. There is a concern that it will increase and productivity will deteriorate.

  The present invention has been made in view of the above-described conventional situation, and deformation of the side portion of the vehicle body to the vehicle interior side due to a side impact load without increasing the size or thickness of a reinforcing member such as a bulk member or a brace member. An object of the present invention is to provide a side body structure of an open car that can suppress the amount of approach.

According to the present invention, a roll bar is bridged and attached to the left and right pillar members, and a bulk member that couples the pillar inner member and the pillar outer member is disposed and fixed in a lower portion than the roll bar attachment portion of the pillar member. In the side body structure of an open car that combines a floor panel with a brace member,
The bulk member and the brace member are disposed at substantially the same height as the floor panel and substantially horizontal in the vehicle width direction , and in the vehicle vertical direction near the outer end of the roll bar in the vehicle width direction. The extending leg portion is fixed, and the lower end portion of the leg portion is fixed in the vicinity of the joint portion between the inner side portion of the brace member in the vehicle width direction and the outer side portion of the floor panel .

  According to the present invention, since the brace member and the bulk member coupled to the floor panel are arranged so as to be substantially horizontal in the vehicle width direction, the collision load below the roll bar at the time of a side collision is a bulk member. To the floor panel through the brace member. In addition, since the lower end portion of the leg portion fixed to the roll bar is fixed to the joint portion between the brace member and the floor panel, a part of the side impact load linearly transmitted from the bulk member to the brace member is the leg portion. To the roll bar. Further, a collision load near the roll bar at the time of a side collision is transmitted to the roll bar, and a part of the collision load is transmitted to the floor panel via the leg portion. In this way, the side impact load can be distributed and transmitted to the floor panel and the roll bar, and as a result, the amount of deformation approaching the vehicle body side into the vehicle can be effectively suppressed.

Here, in the present invention, the bulk member and the brace member are arranged substantially horizontally in the vehicle width direction, and the lower end portion of the leg portion fixed to the roll bar is fixed in the vicinity of the joint portion between the brace member and the floor panel. Therefore, the bulk member and the brace member need not be enlarged and thickened, the increase in cost and vehicle weight can be avoided, and the productivity can be improved.

It is a side view which shows typically the frame | skeleton of the open car provided with the side part vehicle body structure by Example 1 of this invention. It is the perspective view which looked at the said side part vehicle body structure from the vehicle interior diagonally forward. FIG. 3 is a cross-sectional rear view (a cross-sectional view taken along the line III-III in FIG. 1) of the pillar member portion having the structure. FIG. 4 is a cross-sectional plan view (a cross-sectional view taken along line IV-IV in FIG. 3) of the pillar member portion having the structure. FIG. 5 is a cross-sectional plan view (cross-sectional view taken along the line V-V in FIG. 3) of the pillar member portion having the structure. It is a disassembled perspective view of the reinforcement member arrange | positioned in the pillar member of the said structure.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 6 are views for explaining a side body structure of an open car according to a first embodiment of the present invention. In this embodiment, front, rear, left, and right refer to the front of the vehicle from the vehicle interior. This means front, back, left, and right as viewed.

In the figure, 1 is an open car, and the skeleton of the open car 1 has the following configuration. A pair of left and right rocker members 2 and 2 extending in the vehicle front-rear direction are disposed on both the left and right sides in the vehicle width direction, and the front and rear ends of the left and right rocker members 2 and 2 are front cross members ( (Not shown) and a rear cross member 4 (see FIG. 3), and a floor panel 3 is disposed on both the cross member and the rocker member 2. Further, a lower end portion of a front pillar 5 extending upward is coupled to a front end portion of the rocker member 2, and a lower end portion of a center pillar (pillar member) 6 extending upward is coupled to a rear portion. The front pillar 5, the center pillar 6 and the rocker member 2 form a door opening a, and a door 13 is disposed in the door opening a. Further, a rear end portion of the upper member 8 extending forward is coupled to the middle portion of the front pillar 5 in the height direction, and a front end of a quarter member (quarter member) 7 extending rearward is connected to the upper end portion of the center pillar 6. The parts are combined. A reinforcing member 9 that is inclined rearward and upward is coupled to the midway portion of the quarter member 7 in the front-rear direction and the rear end portion of the rocker member 2.

In addition, 11 is a front wheel, 12 is a rear wheel, and each said frame | skeleton structural member is covered with the exterior panel which consists of resin-made fender panel panels 10a, the side panel 10b, the rear panel 10c, etc., and the upper direction of a vehicle interior The ceiling panel 10d is arranged to be openable and closable.

  The rocker member 2 is formed in a cylindrical shape extending in the vehicle front-rear direction by connecting the rocker outer 2a and the rocker inner 2b with flange portions 2c and 2d so as to form a hollow shape.

The center pillar 6 is formed in a cylindrical shape extending in the vertical direction by welding the flange portions 6c and 6d so as to form a hollow shape between the pillar outer 6a and the pillar inner 6b. The lower end 6b ′ of the pillar inner 6b is inserted between the rocker outer 2a and the rocker inner 2b of the rocker member 2 and is welded to the rocker member 2.

A side portion 3a constituting a part of the floor panel 3 is fixed to the shelf portion 2b 'of the rocker inner 2b. The side portion 3a is inclined obliquely upward inward in the vehicle width direction, a base 3b is fixed to the upper surface of the side portion 3a, and a side member 7 'extending in the vehicle front-rear direction is coupled to the lower surface. A rear cross member 4 extending in the vehicle width direction is fixed inside the side member 7 '. The rear cross member 4 is coupled to the side member 7 'via the pedestal 3b and the side portion 3a.

  A sheet metal bulk member 14 is disposed in the lower portion of the center pillar 6. The bulk member 14 has a substantially U-shaped cross section including a bulk body 14a, an outer flange portion 14b, and an inner flange portion 14c. The outer flange portion 14b is fixed by welding to the pillar outer 6a, and the bulk body 14a is disposed horizontally in the vehicle width direction.

A brace member 15 made of sheet metal is disposed on the inner side of the pillar inner 6b. The brace member 15 includes a brace body 15a having a substantially U-shaped cross section that opens downward, and an outer end portion thereof. And a flange portion 15b bent upward. The flange portion 15b is disposed opposite to the inner flange portion 14c of the bulk member 14 with the pillar inner 6b and the reinforcing plate 6e interposed therebetween, and is fastened and fixed by bolts 20f in a four-layer manner. The brace body 15a is disposed at the same height as the bulk body 14a and horizontally in the vehicle width direction. Further, the inner end 15c in the vehicle width direction of the brace body 15a is fixed to the upper surface of the pedestal 3b by welding, thereby forming a joint b between the brace body 15a and the pedestal 3b.

A roll bar device 26 is disposed between the left and right center pillars 6 and 6. The roll bar device 26 includes an upper cross bar 16 and a lower cross bar 17.

The upper crossbar 16 is made of a round pipe and extends in the vehicle width direction. The upper crossbar 16 is also made of a round pipe and is fixed to the left and right ends of the upper crossbar body 16a and extends downward. Have A pair of left and right roll bars 16c formed by bending a round pipe into an inverted U shape is disposed and fixed on the upper crossbar body 16a. The roll bar 16c functions to prevent an impact from the road surface from acting on the head of the occupant by supporting the vehicle body when the vehicle falls.

A seat belt anchor 27 is fixed to the upper end of the leg portion 16a. The webbing led out from a retractor (not shown) is passed through the seat belt anchor 27, and the tongue at the tip of the webbing is detachably locked to a buckle disposed in the vicinity of the seat cushion. In the event of a vehicle collision, the inertial force of the occupant acts as a large forward load on the seat belt anchor 27 and thus on the leg 16a.

A flange 16d is fixed to the lower end portion 16b 'of the leg portion 16b, and the flange 16d is fastened and fixed to the connecting portion b of the brace body 15a and the pedestal 3b of the brace member 15 by a bolt 20e. Yes. Of course, the flange 16d may be fixed to the connecting portion b by welding.

The lower crossbar 17 has a lower crossbar main body 18 made of a square pipe extending in the vehicle width direction, and mounting brackets 19, 19 fixed to the left and right ends of the lower crossbar main body 18. The bracket 19 is the center pillar. 6 is fixed. Here, the lower crossbar main body 18 is disposed below and slightly forward of the upper crossbar main body 16a of the upper crossbar 16.

The mounting bracket 19 has a front and rear divided structure composed of a front plate 19a and a rear plate 19b, and is formed with a leg fixing portion 19c that fixes and supports the middle portion of the leg portion 16b, and is bent forward. And a flange portion 19d fixed to the middle portion of the center pillar 6. The base portions 19a 'and 19b' of the front and rear plates 19a and 19b are clamped and fixed by bolts 20a with the outer ends of the lower crossbar body 18 sandwiched from the front and rear. Further, the leg portions 16b outside portions of the front and rear plates 19a and 19b are fastened and fixed by bolts 20b.

The flange portion 19d is fastened and fixed to the inner wall 22a of the reinforcing member 21 disposed in the center pillar 6 by bolts 20d and weld nuts 20d 'with the pillar inner 6b of the center pillar 6 interposed therebetween.

The reinforcing member 21 has a box shape in plan view including a first U-shaped plate 22 disposed on the front side in the vehicle longitudinal direction and a second U-shaped plate 23 disposed on the rear side. The second U-shaped plate 23 is disposed so as to overlap between the inner and outer walls 22a and 22b of the first U-shaped plate 22.

The first U-shaped plate 22 includes a front wall 22c facing forward of the vehicle, and the inner wall 22a and outer wall 22b facing inward and outward in the vehicle width direction. The second U-shaped plate 23 has a rear wall 23c facing the rear of the vehicle, and an inner wall 23a and an outer wall 23b facing the vehicle width direction inside and outside. A rear end portion of the inner side wall 22a of the first U-shaped plate 22 and a middle portion of the outer side wall 22b and an inner side wall 23a and an outer side wall 23b of the second U-shaped plate 23 are coupled to each other. Is configured. The reinforcing member 21 is fixed over the pillar inner 6b and the pillar outer 6a.

A lower cross bar 17 of a roll bar device 26 is attached to a portion of the pillar inner 6b facing the inner wall 22a of the first U-shaped plate 22, and a rear end of the outer wall 22b of the first U-shaped plate 22 The portion 22b 'extends rearward and is fixed to the front end portion 7a of the quarter panel 7 by welding.

  Furthermore, a locking plate 24 is fixed to the front surface of the front wall portion 22 c of the first U-shaped plate 22. The locking plate 24 is L-shaped, and a convex portion 24a is formed to protrude forward at a corner portion thereof. The locking plate 24 is disposed so as to face the rear end portion 25a of the belt line reinhose 25 disposed on the belt line of the door 13, and more specifically, the convex portion 24a is disposed on the rear end portion. It is located slightly outside in the vehicle width direction from 25a.

  Here, when the door 13 moves rearward due to a collision load at the time of a front collision, the locking plate 24 opens to the outside in the vehicle width direction. It functions to block by locking 25a.

According to the present embodiment, the brace member 15 coupled to the pedestal 3b of the floor panel 3 and the bulk member 14 disposed in the center pillar 6 are arranged such that the bulk main body 14a and the brace main body 15a are substantially in the vehicle width direction. Since they are arranged so as to be horizontal, that is, to form a straight line, the collision load F1 acting below the lower crossbar 17 at the time of a vehicle side collision is substantially linear from the bulk member 14 to the floor panel 3 via the brace member 15. (See arrow A1 in FIG. 3).

Further, since the lower end portion 16b 'of the leg portion 16b fixed to the lower cross bar 17 is fixed to the joint portion b between the brace member 15 and the floor panel 3, the linear member is transmitted from the bulk member 14 to the brace member 15. A part of the side collision load F1 is transmitted from the leg portion 16b to the lower crossbar 17 and further to the upper crossbar 16 (see arrow A2 in the figure).

Furthermore, a collision load F2 acting in the vicinity of the roll bar 17 at the time of a side collision is transmitted to the lower cross bar 17 and the upper cross bar 16 (see the arrows B1 and B1 'in the figure), and a part thereof is the leg. It is transmitted to the floor panel 3 through the part 16b (see arrow B2 in the figure).

Here, the transmission path of the collision load F2 at the time of the side collision, the collision load F3 at the time of the front collision, and the load from the seat belt anchor 27 will be described in more detail with reference to FIG.

The side impact load F2 acting on the relatively upper portion of the center pillar 6 is transmitted to the lower cross bar 17 of the roll bar device 26 via the two surfaces of the front wall 22c and the rear wall 23c of the reinforcing member 21 ( (See arrows f1 and f1 ′ in FIG. 4).

Further, the front collision load F3 input through the belt line rein hose 25 of the door 13 is distributed and transmitted from the front wall 22c of the reinforcing member 21 to the inner wall 22a and the outer wall 22b (see arrow f2 in FIG. 4). Further, the distributed load on the outer wall 22b is transmitted to the quarter member 7 (see arrow f2 'in the figure), and the distributed load on the inner wall 22a is transmitted to the lower cross bar 17 of the roll bar device 26 (arrow f2'). 'reference). Furthermore, the load ahead of the vehicle from the seat belt anchor 27 is transmitted to the inner wall 22a of the reinforcing member 21 (see arrow f4).

In the present embodiment, the side impact loads F1 and F2 can be distributed and transmitted to the floor panel 3, the lower crossbar 17, and the upper crossbar 16 as described above. The amount of deformation approaching to can be effectively suppressed.

Here, in the present embodiment, the bulk member 14 and the brace member 15 are disposed substantially horizontally in the vehicle width direction, and the lower end portion 16b 'of the leg portion 16b fixed to the lower cross bar 17 is connected to the brace member 14 and the floor panel. 3 is fixed in the vicinity of the connecting portion b with the third member, so that the bulk member 14 and the brace member 15 need not be enlarged and thickened, and an increase in cost and vehicle weight can be avoided. , Improve productivity.

Further, in the present embodiment, the box-shaped reinforcing member 21 is disposed in the center pillar 6 so as to span the pillar inner 6b and the pillar outer 6a, so that the reinforcing member 21 can be expanded in any direction without increasing its size and thickness. Can be effectively transmitted to the vehicle body constituting member, and occupant protection can be achieved.

1 Open car 3 Floor panel 6 Center pillar (pillar member)
6a Pillar outer 6b Pillar inner 14 Bulk member 15 Brace member 16b Leg 17 Lower cross bar (roll bar)
b Joint part

Claims (1)

A roll bar is installed over the left and right pillar members, and a bulk member for connecting the pillar inner member and the pillar outer member is disposed and fixed in the lower part from the roll bar mounting portion of the pillar member, and the bulk member and the floor panel are fixed. In the side body structure of an open car that is connected by brace members,
The bulk member and the brace member are disposed at substantially the same height as the floor panel and substantially horizontal in the vehicle width direction,
A leg portion extending in the vehicle up-down direction is fixed near the vehicle width direction outer side end portion of the roll bar,
A side vehicle body structure for an open car, wherein a lower end portion of the leg portion is fixed in the vicinity of a connecting portion between an inner portion in the vehicle width direction of the brace member and an outer portion of the floor panel .

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