JP5996352B2 - Automobile pillar reinforcement structure - Google Patents

Description

 The present invention relates to a pillar reinforcing structure for an automobile in which an influence on a passenger compartment due to input at the time of a vehicle collision is suppressed.

 In automobiles, a structure is adopted in which the influence on the passenger compartment due to input during a vehicle collision is suppressed. For example, Patent Document 1 discloses a structure in which a patch member is disposed on a pillar rein hose of a center pillar to prevent the door from moving outside the vehicle at the time of a vehicle front collision. Further, Patent Document 2 has a structure in which the center pillar is prevented from entering the vehicle interior at the time of a vehicle side collision by providing means for reducing the impact deformation strength in the vicinity of the joint portion of the cross member with the side sill. It is disclosed.

 By the way, the center pillar gradually increases from the lower side to the upper side so that the closed sectional area of the upper part (door glass arrangement part) from the door belt line part becomes smaller than the closed sectional area of the lower part (door body part). Generally, it is thin (see, for example, FIG. 1 of Patent Document 1 and FIG. 2 of Patent Document 2). This is because the upper part of the center pillar door belt line part is a part that does not support the opening and closing of the door, so it does not require much rigidity compared to the lower part, and the above-mentioned structure makes the vehicle interior wider Because it becomes possible to do.

JP 2004-114818 A Japanese Unexamined Patent Publication No. 7-89462

 However, when the center pillar is made thinner as it goes from the lower side to the upper side as in the conventional structure, for example, the lower side (door body supporting part) and the upper side (door glass supporting part) of the center pillar are rigid. A difference will arise and it will become easy to generate | occur | produce a rigid break point in the middle part of a center pillar. For this reason, when the center pillar is bent and deformed midway from the input at the time of a vehicle side collision, the amount of entry into the vehicle compartment may increase.

 In order to suppress such bending deformation, it is conceivable to increase the rigidity by forming a reinforcing bead extending in the vehicle vertical direction at the rigid break point portion of the center pillar. However, if the reinforcing beads are simply formed, the reinforcing beads are likely to buckle and deform due to the input at the time of the frontal collision of the vehicle, and the input may not be effectively transmitted to the rear of the vehicle body.

 Here, in order to suppress the bending deformation at the time of the side collision and the buckling deformation at the time of the front collision, the plate thickness of the center pillar is increased, or a reinforcing member is additionally added to the rigid break point or the reinforcing bead. However, in this case, there arises a problem that the weight and cost of the vehicle body increase and productivity deteriorates.

 The present invention has been made in view of the above-described conventional situation, and can suppress both bending deformation at the time of a vehicle side collision and buckling deformation at the time of a vehicle frontal collision without incurring problems of increase in vehicle weight and cost. It is an object to provide a pillar reinforcing structure of an automobile.

According to a first aspect of the present invention, there is provided an automobile pillar in which a pillar inner and a pillar outer are coupled so as to form a closed cross section with a pillar rein hose interposed, and a patch member is disposed at a portion facing the door belt line portion of the pillar rein hose. A reinforcing structure,
Of the pillar reinforcements, the portion facing the door belt line portion, and a concave bead extending upward as recessed interior side from the door belt line portion, a convex bead extending downward so as to protrude vehicle-exterior And the patch member extends so as to straddle the door belt line portion in the vertical direction, and straddles at least the lower part of the concave bead and at least the upper part of the convex bead in the vehicle front-rear direction. It is characterized by being coupled to the pillar rein hose.

According to the pillar reinforcing structure of the first aspect of the present invention, the pillar rein hose is formed with the concave bead extending upward and the convex bead extending downward from the portion facing the door belt line portion. Thus, the rigidity of the entire upper part and the lower part can be increased, and consequently, the rigidity break point in the middle of the pillar can be eliminated. As a result, by receiving the input at the time of a vehicle side collision at the concave bead of the pillar rein hose and the ridgeline of the convex bead , it is possible to suppress the pillar from being bent and deformed in the middle, and to reduce the amount of entry into the vehicle interior accordingly. Can do.

In the present invention, the patch member is formed in the pillar rein hose so as to extend across the door belt line portion in the vertical direction, and to straddle at least the lower part of the concave bead and at least the upper part of the convex bead in the vehicle front-rear direction. Since they are coupled, buckling deformation of concave beads and convex beads due to input at the time of vehicle frontal collision can be suppressed by the patch member, which can prevent the pillar from bending and deforming in the middle, effectively making the input to the rear of the vehicle Can communicate.

As described above, in the present invention, the existing patch member is effectively used to reinforce the concave bead and the convex bead of the pillar rein hose . Therefore, the plate thickness of the pillar rein hose is increased or a separate reinforcing member is added. Therefore, it is possible to cope with an input at the time of a vehicle collision without avoiding an increase in the weight and cost of the vehicle body and to avoid a deterioration in productivity.

It is a side view of the vehicle body side part of the automobile of Example 1 according to the invention of claim 1. It is sectional drawing of the said center pillar. It is a side view of the center pillar. It is a disassembled perspective view of the center pillar.

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

1 to 4 are views for explaining a pillar reinforcing structure for an automobile according to a first embodiment of the present invention.

 In the figure, reference numeral 1 denotes a vehicle body side portion. The vehicle body side portion 1 connects the front end portion 3a of the roof rail 3 extending in the vehicle front-rear direction to the upper end portion 2a of the front pillar 2 extending in the vehicle vertical direction, and the front end of the rocker panel 4 extending in the vehicle front-rear direction to the lower end portion 2b. The front door opening 1a and the rear door opening 1b are formed by connecting the parts 4a and bridging and connecting the midway parts 4b and 3b between the rocker panel 4 and the roof rail 3 with a center pillar 5 extending in the vehicle vertical direction. Has a structure formed.

A front door 7 (see FIG. 2 ) is disposed in the opening 1a of the front door 1, and the front door 7 is opened and closed via upper and lower hinges 8a and 8b disposed under the front pillar 2. Supported as possible. (See Figure 1)
A rear door 6 is disposed in the rear door opening 1b, and the rear door 6 is disposed at the lower part of the center pillar 5 and is supported to be opened and closed via lower hinges 9a and 9b.

 The front door 7 and the rear door 6 have a schematic structure in which a sash that supports a door glass (not shown) so as to be movable up and down is connected to the door main bodies 7a and 6a, respectively.

 Door belt line rein hoses 7b and 6b extending in the front-rear direction along the door belt line L are disposed in the door bodies 7a and 6a.

 Each of the door belt line rein hoses 7b and 6b wraps around the front pillar 2 and the center pillar 5 when viewed in the vehicle front-rear direction, and is disposed at substantially the same height. As a result, the input at the time of the frontal collision of the vehicle is transmitted from the front pillar 2 to the door belt line rein hose 7b of the front door 7, and from the door belt line rein hose 7b through the center pillar 5 to the door belt line rein hose of the rear door 6. 6b.

 The center pillar 5 is arranged between a substantially flat pillar inner 12 and a pillar outer 13 having a cross-sectional hat shape, and a cross-hat-shaped pillar rein hose 14 formed so as to substantially follow the pillar outer 13. By connecting the flange portions 5a and the rear flange portions 5b together by welding, a rectangular tube-like closed section extending in the vertical direction is formed.

 The center pillar 5 is formed such that the closed cross-sectional area gradually decreases from the lower side to the upper side. Accordingly, the pillar rein hose 14 has a dimension width in the front-rear direction from the lower side to the upper side. It is formed to become gradually smaller.

 The pillar rein hose 14 has an outer wall 14a, a front side wall 14b and a rear side wall 14c that bend and extend inward of the vehicle following the front edge and rear edge of the outer wall 14a. The aforementioned front flange portion 5a and rear flange portion 5b are bent on the side wall 14c.

 The pillar rein hose 14 is provided with a sheet metal patch member 15. The patch member 15 is disposed so as to face the door belt line L in the vehicle front-rear direction. Specifically, the patch member 15 is disposed in the middle of the pillar rein hose 14 so as to straddle the door belt line L in the vertical direction. ing.

 The patch member 15 is formed so as to gradually become narrower from the lower side to the upper side along the front-rear width dimension of the pillar rein hose 14, and is joined to the outer wall 14a of the pillar rein hose 14 by welding. The outer wall portion 15a is bent and extends from the front edge of the outer wall portion 15a to the vehicle inner side, and is connected to the front side wall 14b by welding.

 A projecting portion 15 c that projects forward is formed at the center in the vertical direction of the corner portion between the outer wall portion 15 a and the front wall portion 15 b of the patch member 15. The projecting portion 15c is disposed at a position displaced outward from the door belt line rein hose 7b of the front door 7. As a result, the front door 7 is moved rearward by an input at the time of a frontal collision of the vehicle, whereby the door belt line rein hose 7b is engaged with the inside of the protruding portion 15c, thereby moving the front door 7 to the outside of the vehicle and opening it. Is preventing. Here, the protruding portion 15 c may be formed over the entire length of the patch member 15 in the vertical direction.

 In the above embodiment, the patch member 15 is L-shaped and joined to the outer side wall 14a and the front side wall 14c of the pillar rein hose 14, but in the present invention, the patch member is substantially hat-shaped, You may couple | bond with the front, a rear side wall, and the whole outer wall of a pillar rein hose. In this case, the rigidity of the door belt line L portion of the pillar rein hose 14 can be further increased.

 A concave bead 14d extending upward from a portion facing the door belt line L is formed in the pillar rein hose 14 so as to be recessed inside the vehicle. Specifically, the door belt line L of the pillar rein hose 14 is formed. It is formed in the upper half.

 The pillar rein hose 14 is formed by projecting a convex bead 14g extending downward from a portion facing the door belt line L to the outside of the vehicle. Specifically, the door belt line L of the pillar rein hose 14 is formed. It is formed in the lower half. The lower end position of the concave bead 14d and the upper end position of the convex bead 14g substantially coincide with each other on the door belt line L.

 The concave bead 14d is formed at the center in the front-rear direction of the outer wall 14a of the pillar rein hose 14, and the convex bead 14g is formed at the vehicle rear side corner of the outer wall 14a of the pillar rein hose 14. .

 The patch member 15 extends so as to straddle the door belt line L of the pillar rein hose 14 in the vertical direction, and the lower part of the concave bead 14d and the upper part of the convex bead 14g extend in the vehicle front-rear direction. It is welded to the pillar rein hose 14 so as to straddle.

According to this embodiment, the pillar rein hose 14 is formed with the concave bead 14d extending upward from the portion facing the door belt line L and the convex bead 14g extending downward, so that the upper half from the door belt line L of the center pillar 5 is formed. The rigidity of the entire portion and the lower half can be increased, and consequently, the rigidity break point at the midway in the vertical direction of the center pillar 5 can be eliminated. As a result, by receiving the input at the time of the vehicle side collision at the ridge lines a of the concave bead 14d and the convex bead 14g of the pillar rein hose 14, it is possible to suppress the center pillar 5 from being bent and deformed in the middle, and only to the vehicle interior. The amount of entering can be reduced.

 In the present embodiment, the patch member 15 is formed to extend so as to straddle the door belt line L in the vertical direction, and to straddle the lower part of the concave bead 14d and the upper part of the convex bead 14g in the vehicle longitudinal direction. Since it is coupled to the pillar rein hose 14, the convex bead 14g of the center pillar 5 receives the input at the time of the vehicle frontal collision, and the patch member 15 receives it. As a result, the center pillar 5 can be prevented from being bent and deformed in the middle, and the input can be efficiently transmitted to the rear part of the vehicle body.

 Moreover, since the concave bead 14d is formed in the upper half of the pillar rein hose 14 and the convex bead 14g is formed in the lower half, the rigidity of the entire pillar rein hose 14 can be increased.

Thus in this embodiment, since so as to reinforce the concave bead 14d and convex bead 14g of the pillar reinforcements 14 by effectively utilizing the existing patch member 15, or by increasing the thickness of the pillar reinforcements separately can correspond to an input of a vehicle collision without or add a reinforcing member, it is possible to avoid the increase of the vehicle weight and cost, cut with avoiding the deterioration of productivity.

5 Center pillar 12 Pillar inner 13 Pillar outer 14 Pillar rein hose 14d Concave bead
14g Convex beads 15 Patch member L Door belt line

Claims (1)

A pillar inner structure of a vehicle in which a pillar inner and a pillar outer are coupled to form a closed cross section with a pillar rein hose interposed therebetween, and a patch member is disposed at a portion facing the door belt line portion of the pillar rein hose,
Of the pillar reinforcements, the portion facing the door belt line portion, and a concave bead extending upward as recessed interior side from the door belt line portion, a convex bead extending downward so as to protrude vehicle-exterior Formed,
The patch member extends so as to straddle the door belt line portion in the up-down direction, and extends in the vehicle front-rear direction so as to straddle at least a lower portion of the concave bead and at least an upper portion of the convex bead. A pillar reinforcement structure for an automobile characterized by being connected to a hose.

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