JP5700280B2 - Vehicle front pillar superstructure - Google Patents

Description

  The present invention relates to a front pillar superstructure of a vehicle provided with a triangular window in a front pillar.

  Some vehicles have triangular windows provided on the left and right front pillars in order to secure a field of view on the side of the vehicle body (see, for example, Patent Documents 1 to 3). Here, a conventional example of an upper structure of a front pillar of a vehicle having a front pillar provided with a triangular window will be described below with reference to FIGS.

  8 is a side view of a front pillar portion of a vehicle provided with a triangular window, FIG. 9 is a sectional view taken along line FF in FIG. 8, and FIG. 10 is a sectional view taken along line GG in FIG. As shown in FIG. 2, the front pillar 107 is composed of a first pillar 107A located on the front side and a second pillar 107B located on the rear side thereof, and a triangular shape is formed between the first pillar 107A and the second pillar 107B. A window 109 is provided.

  As shown in FIG. 9, for example, the first pillar 107 </ b> A on the front side forms a closed cross-sectional structure by an inner panel 113, an outer panel 114, and a reinforcement 115.

  By the way, when a large external force is applied to the front pillar 107 as in the case where a vehicle equipped with the triangular window 109 on the front pillar 107 collides with the front in this way, the cross-sectional area of the front pillar 107 changes greatly (first In many cases, stress is concentrated on a portion where the pillar 107A and the second pillar 107B intersect. In particular, when the triangular window 107 is large in the vehicle body upward direction and the upper end of the vehicle model is close to the roof, the portion where the curvature of the design shape of the front pillar 107 is large and the three-way portion are close to each other, so that stress is more likely to be concentrated. It becomes a structure.

  Therefore, the reinforcement 115 is set at the three-way section of the front pillar 107 to improve the collision performance of the vehicle.

JP-A-8-080868 Japanese Patent Laid-Open No. 11-235983 JP 2006-151103 A

  However, in the conventional front pillar superstructure, as shown in FIG. 10, the free end 115 a (unjoined portion) is generated in the reinforcement 115 at the three-way portion of the front pillar 107 and the closed cross section disappears. The original function of 115 is not exhibited, the strength and rigidity of the three-way portion of the front pillar 107 are insufficient, and the three-way portion is easily deformed when subjected to a large impact load.

  In order to solve the above problem, it is conceivable that the reinforcement is set to a large shape straddling the three-way section of the front pillar, and that the reinforcement is configured so that a free end does not occur. As the reinforcement increases, the weight increases and costs increase, and the cross-sectional area of the closed cross-section structure composed of the reinforcement and inner panel suddenly changes (increases) at the three-way junction, so the cross-sectional area changes abruptly. There arises a problem that stress concentrates on the part and the part is easily deformed.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to prevent local deformation of the front pillar by improving the rigidity of the front pillar and relaxing stress concentration, and to improve the shock absorption performance of the front pillar. An object of the present invention is to provide a front pillar superstructure for a vehicle.

To achieve the above object, a first aspect of the present invention, the front pillar of a vehicle having a closed cross section by the inner panel and the outer panel and the reinforcement, constituted by a first pillar and a second pillar, the first The upper part of the pillar is connected to the roof side rail, the upper part of the second pillar is connected to the intermediate part of the first pillar, and the intermediate part of the first pillar and the upper part of the second pillar form a three-way part. , each lower portion of the first pillar and the second pillar are spaced apart from each other, a front pillar superstructure of a vehicle arranged triangular window between the first pillar and a second pillar, the A first inner closed cross section is formed by the inner panel and the lean reinforcement above the vehicle at the three-way section, and the lean force is formed on the outer side in the vehicle width direction of the first inner closed cross section. Cement and the first outer closed section is formed by the outer panel, in the three-way junction portion, the coupling surface to the inner panel of the upper end position of the second pillar is provided, the lean and the inner panel by the coupling surface A second inner closed cross section is formed by the inner panel and the lean force, and the outer panel, the inner panel, and the lean force are formed on the outer side in the vehicle width direction of the second inner closed cross section. A second outer closed cross section is formed by the vehicle, and a third inner closed cross section is formed by the inner panel and the reinforcement under the vehicle at the three-way section, and the third inner closed cross section is formed on the outer side in the vehicle width direction. A third outer closed section is formed by the reinforcement and the outer panel, and the first inner closed section, The second inner closed section and the third inner closed section are formed to be continuous, and the first outer closed section, the second outer closed section, and the third outer closed section are formed to be continuous. A closed section of the first pillar is formed, and a closed section of the second pillar formed by the inner panel and the outer panel is configured to be continuous with the second outer closed section. To do.

  According to a second aspect of the present invention, in the first aspect of the present invention, the connecting surface of the inner panel is a direction connecting the triangular window side flange and the rear flange of the second pillar, and the second pillar. It extends in the direction which crosses.

  The invention according to claim 3 is the invention according to claim 2, wherein the triangular window side flange of the second pillar is on the vehicle outer side and the rear flange is on the vehicle inner side with respect to the center position in the left-right direction of the vehicle of the second pillar. The coupling surfaces are formed on slopes that are respectively arranged and are continuous with the triangular window side flange and the rear flange.

  According to the first aspect of the present invention, since the inner panel and the reinforcement are coupled by the coupling surface provided on the inner panel which is the upper end position of the second pillar, the reinforcement is sufficiently capable of performing its original function. The lean reinforcement increases the rigidity of the front pillar, and external force applied from the front of the vehicle can be transmitted from the front pillar to the roof side rail. And since the closed cross-section structure which continues over the 1st pillar and a roof side rail was formed by the inner panel and lean reinforcement of the 2nd pillar upper end position, the stress concentration by the sudden change of the cross-sectional area of a closed cross-section structure can be avoided. .

  Therefore, local deformation of the front pillar can be prevented by improving rigidity of the front pillar and relaxation of stress concentration, and the shock absorption performance of the front pillar can be enhanced.

  According to the invention of claim 2, since the coupling surface of the inner panel extends in a direction connecting the triangular window side flange and the rear flange of the second pillar and crossing the second pillar, A relatively long coupling surface can be formed, and the inner panel and the reinforcement by the coupling surface can be coupled at a plurality of locations, and the coupling strength can be increased. In addition, a closed cross-sectional structure continuous to the upper end portion of the second pillar can be easily formed, and a closed cross-sectional shape effective in force transmission without stress concentration can be realized.

  According to the invention of claim 3, the triangular window side flange of the second pillar is arranged on the vehicle outer side and the rear flange is arranged on the vehicle inner side with respect to the center position in the left-right direction of the vehicle of the second pillar. Since the coupling surface is formed on the slope continuous with the triangular window side flange and the rear flange, a closed cross section can be easily formed between the inner panel at the upper end position of the second pillar and the reinforcement. In addition, the closed cross section can be continued more smoothly between the first pillar and the roof side rail without causing a large change in the cross-sectional area, and a highly rigid front pillar without stress concentration can be configured.

It is a side view of a vehicle provided with a front pillar superstructure according to the present invention. It is a side view of the front pillar part of a vehicle provided with the front pillar upper part structure concerning the present invention. It is a figure of the arrow A direction of FIG. FIG. 3 is an enlarged detail view of a portion B (three-way section) in FIG. 2. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is a side view of the front pillar part of a vehicle provided with the conventional front pillar superstructure. It is the FF sectional view taken on the line of FIG. It is the GG sectional view taken on the line of FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a side view of a vehicle having a front pillar superstructure according to the present invention, FIG. 2 is a side view of a front pillar portion of the vehicle, FIG. 3 is a view in the direction of arrow A in FIG. 2, and FIG. FIG. 5 is a sectional view taken along the line CC of FIG. 4, FIG. 6 is a sectional view taken along the line DD in FIG. 4, and FIG. 7 is a sectional view taken along the line EE in FIG. .

  A pair of left and right side sills 4 are arranged between the front wheel 2 and the rear wheel 3 of the vehicle 1 shown in FIG. 1 along the longitudinal direction of the vehicle. Side rails 6 are arranged along the vehicle longitudinal direction. The front ends of the pair of left and right side sills 4 and the roof side rail 6 are connected to each other by a pair of left and right front pillars 7, and the upper half portion of each front pillar 7 is gently inclined along the windshield 8. A triangular window 9 is fixed. The lower half of each front pillar 7 is covered with a fender panel 10. Left and right front doors 11 and rear doors 12 that can be opened and closed are provided at the rear of the left and right front pillars 7 respectively.

  Here, the upper structure of the front pillar 7 will be described below with reference to FIGS. Since the structure of the pair of left and right front pillars 7 is the same, only one of the front pillars 7 will be illustrated and described below.

  As shown in FIGS. 5 to 7, each front pillar 7 forms a closed cross-sectional structure by an inner panel 13, an outer panel 14, and a reinforcement 15 that are sheet metal press-formed products. Specifically, a reinforcement 15 as a reinforcing member is sandwiched between the inner panel 13 positioned on the vehicle interior side and the outer panel 14 positioned on the vehicle exterior side, and the front flanges 13a of the inner panel 13 and the outer panel 14 are interleaved with each other. The front pillar 7 having a closed cross-sectional structure is configured by overlapping and welding the 14a and the rear flanges 13b and 14b.

  Thus, as shown in FIG. 2, the front pillar 7 having a closed cross-sectional structure is composed of a first pillar 7A located on the front side and a second pillar 7B located behind the first pillar 7A. The triangular window 9 is fixed between the pillar 7A and the second pillar 7B. That is, the front pillar 7 is formed with an opening for a triangular window. The opening for the triangular window is divided into a first pillar 7A on the front side thereof and a second pillar 7B on the rear side of the opening. At the peripheral edge of the opening, the triangular window side flanges 13c and 14c of the inner panel 13 and the outer panel 14 are overlapped and welded to form a closed cross-sectional structure of the first pillar 7A and the second pillar 7B. The triangular window 9 is fixed by using a flange formed as a single surface by overlapping and welding the triangular window side flanges 13c and 14c.

  By the way, in the three-way section where the first pillar 7A and the second pillar 7B at the upper part of the front pillar 7 intersect, the reinforcement 15 is provided with the second pillar 7B as shown in FIG. It does not extend to. For this reason, as shown in FIG. 6, in the reinforcement 15 in the three-way crossing of the front pillar 7, the free end 15a exists as in the conventional case (see FIG. 10), and the discontinuous portion of the closed cross section exists. become.

  On the other hand, in the first pillar 7A other than the three-way section of the front pillar 7, for example, as shown in FIG. 5, the inner panel 13, the outer panel 14, and the reinforcement 15 form a closed cross-sectional structure. In the cross-sectional structure, a closed cross-section X1 surrounded by the inner panel 13 and the reinforcement 15 is formed. Although not shown, the inner pillar 13 and the outer panel 14 also form a closed cross-sectional structure in the second pillar 7B.

  Further, even at the portion where the first pillar 7A and the second pillar 7B join and are connected to the roof side rail 6 (see FIG. 1), as shown in FIG. 7, the inner panel 13, the outer panel 14, and the reinforcement 15 are used. A closed cross-sectional structure is configured, and a closed cross-section X3 surrounded by the inner panel 13 and the reinforcement 15 is formed in the closed cross-sectional structure.

  On the other hand, in the trifurcation portion where the first pillar 7A and the second pillar 7B of the front pillar 7 merge, a free end 15a is formed in the reinforcement 15 as shown in FIG. In this embodiment, as shown in FIG. 3 and FIG. 6, the reinforcement 15 is applied to the inner panel 13 that is the upper end position of the second pillar 7B. A sloped coupling surface 13A that bulges toward 15 (surface hatched in FIG. 3) is provided, and the inner panel 13 and the free end 15a of the reinforcement 15 are coupled by the coupling surface 13A. doing. As a result, a closed cross-sectional structure is formed by the inner panel 13, the outer panel 14, and the lean reinforcement 15 also in the three-way section of the front pillar 7, and the first pillar 7 </ b> A is formed by the inner panel 13 and the lean force 15 in this closed cross-sectional structure. A closed cross section X <b> 2 that continues across the roof side rail 6 is formed. Here, the cross-sectional area of the closed cross-section X1 (see FIG. 5) in the first pillar 7A that is continuous with the cross-sectional area of the closed cross-section X2 (see FIG. 6) in the three-junction portion and the first pillar 7A and the second pillar 7B merge. The cross-sectional area of the closed cross section X3 (see FIG. 7) in the subsequent portion is substantially the same, and these continuous closed cross sections X1 to X3 do not have a portion where the cross sectional area changes suddenly or a discontinuous portion of the closed cross section. As shown in FIG. 6, in this embodiment, the inner panel 13 is formed by joining two panels, but the inner panel 13 may be constituted by a single panel.

  By the way, as shown in FIG. 6, the coupling surface 13A provided on the inner panel 13 which is the upper end position of the second pillar 7B has a triangular window side flange (the triangular window side flange of the inner panel 13 of the second pillar 7 and the outer panel 14). Peripheral flanges) 13c, 14c and the rear flanges 13b, 14b are extended in the direction crossing the upper end position of the second pillar 7B. In the present embodiment, as shown in FIG. 6, the triangular window side flanges 13c and 14c of the inner panel 13 of the second pillar 7B and the outer panel 14 with respect to the center position in the left-right direction of the vehicle of the second pillar 7B are the vehicle. Outside, the rear flanges 13b and 14b are respectively arranged on the vehicle inner side, and a coupling surface 13A is formed on a slope that continues to the triangular window flanges 13c and 14c and the rear flanges 13b and 14b.

  As described above, in the present embodiment, since the inner panel 13 and the reinforcement 15 are coupled by the coupling surface 13A provided on the inner panel 13 that is the upper end position of the second pillar 7B, a closed cross section is formed. The lean force 15 can fully perform its original function. The lean force 15 increases the rigidity of the front pillar 7, and external force applied from the front of the vehicle is applied from the front pillar 7 to the roof side rail 6. Can communicate. Since the inner panel 13 and the reinforcement 15 at the upper end position of the second pillar 7B form a closed cross-sectional structure continuous across the first pillar 7A and the roof side rail 6, stress concentration due to a sudden change in the cross-sectional area of the closed cross-sectional structure Can be avoided.

  Therefore, according to the present invention, it is possible to prevent the local deformation of the front pillar 7 by improving the rigidity of the front pillar 7 and alleviating the stress concentration, and to improve the shock absorbing performance of the front pillar 7.

  In the present embodiment, the coupling surface 13A of the inner panel 13 is a direction connecting the inner panel 13 of the second pillar 7B, the triangular window side flanges 13c, 14c of the outer panel 14, and the rear flanges 13b, 14b, And since it extended in the direction crossing the upper end of the 2nd pillar 7B, the comparatively long joint surface 13A can be formed, and the inner panel 13 and the reinforcement 15 by this joint surface 13A are couple | bonded in several places. And the bond strength can be increased. And the closed cross-section structure which continues in the upper end part of the 2nd pillar 7B can be formed easily, and the closed cross-section shape without a stress concentration and effective in force transmission is realizable.

  Furthermore, according to the present embodiment, the inner panel 13 of the second pillar 7B and the triangular window side flanges 13c, 14c of the outer panel 14 are arranged on the rear side of the vehicle with respect to the center position of the second pillar 7B in the left-right direction. Since the flanges 13b and 14b are respectively arranged on the inner side of the vehicle and the coupling surface 13A is formed on the inclined surface continuous to the triangular window side flanges 13c and 14c and the rear flanges 13b and 14b, the inner panel is formed at the upper end position of the second pillar 7B. A closed cross section can be easily formed between 13 and the reinforcement 15. In addition, the closed cross section can be continued more smoothly between the first pillar 7A and the roof side rail 6 without causing a large change in the cross-sectional area, and a highly rigid front pillar 7 that does not cause stress concentration can be configured. The effect that it can be obtained.

DESCRIPTION OF SYMBOLS 1 Vehicle 6 Roof side rail 7 Front pillar 7A 1st pillar 7B 2nd pillar 9 Triangular window 13 Inner panel 13A Inner panel coupling surface 13a Inner panel front flange 13b Inner panel rear flange 13c Inner panel triangular window side flange 14 Outer panel 14a Outer panel front flange 14b Outer panel rear flange 14c Outer panel triangular window side flange 15 Reinforcement 15a Lean force free end X1 to X3 Closed section

Claims (3)

The front pillar of the vehicle having a closed cross section by the inner panel and the outer panel and the reinforcement, constituted by a first pillar and a second pillar, the upper portion of the first pillar is connected to a roof side rail, the second pillar The upper portion of the first pillar is connected to the middle portion of the first pillar, and the middle portion of the first pillar and the upper portion of the second pillar constitute a three-way section, and the lower portions of the first pillar and the second pillar are A front pillar upper structure of a vehicle, which is disposed at a distance from each other and a triangular window is disposed between the first pillar and the second pillar,
Above the three fork road,
A first inner closed section is formed by the inner panel and the reinforcement, and a first outer closed section is formed by the reinforcement and the outer panel on the outer side in the vehicle width direction of the first inner closed section. ,
In the three-way section,
A coupling surface is provided on the inner panel, which is the upper end position of the second pillar , and the inner panel and the reinforcement are coupled by the coupling surface , and a second inner closed cross section is formed by the inner panel and the reinforcement. Is formed on the outer side in the vehicle width direction of the second inner closed cross section, the second outer closed cross section is formed by the outer panel, the inner panel, and the reinforcement.
Below the vehicle in the three-way section,
A third inner closed section is formed by the inner panel and the reinforcement, and a third outer closed section is formed by the reinforcement and the outer panel outside the third inner closed section in the vehicle width direction. ,
The first inner closed section, the second inner closed section, and the third inner closed section are formed to be continuous, and the first outer closed section, the second outer closed section, and the third outer closed section are formed. Are formed to be continuous, and constitute a closed section of the first pillar,
The front pillar upper structure of a vehicle , wherein a closed cross section of the second pillar formed by the inner panel and the outer panel is configured to be continuous with the second outer closed cross section .   2. The coupling surface of the inner panel extends in a direction connecting the triangular window side flange and the rear flange of the second pillar and in a direction crossing the second pillar. The front pillar superstructure of the described vehicle. The triangular window side flange of the second pillar is arranged on the vehicle outer side and the rear flange is arranged on the vehicle inner side with respect to the center position in the left-right direction of the vehicle of the second pillar, and continuous to the triangular window side flange and the rear flange. The upper structure of the front pillar of a vehicle according to claim 2, wherein the coupling surface is formed on an inclined surface.

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