JPH0721425Y2 - Stiffening structure in front of cabover vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a vehicle body front portion stiffening structure of a cab-over vehicle.

(Prior Art) A conventional vehicle body front portion structure of a cabover vehicle is, for example, as shown in FIG. 10, welded together the respective end edges of the front pillar outer 1 and the front pillar inner 2 by spot welding, Form a front pillar with a closed cross section,
The front pillar inner 2 is laid across the inner surface of the vehicle body and a front panel (not shown) to join the headlamp storage cover 8 by spot welding or the like, and the left and right headlamp storage covers 8 are steered, pedaled, It is configured by connecting and connecting by a frame 3 having a closed cross-sectional shape that holds an instrument panel and the like. See you again
As described in Japanese Patent Laid-Open No. 56-33772, a reinforcing member is superposed on the back surface of a front panel of a cabin via a filler having elasticity in the vehicle width direction, and the outer ends of the reinforcing member in the vehicle width direction are arranged on the left and right front sides. Some pillars are configured by welding to the inner surface side of the vehicle body of the pillar inner.

(Problems to be Solved by the Invention) According to the above-mentioned conventional structure, the outer end of the frame disposed in the rear surface of the front panel in the vehicle width direction is directly connected to the front pillar inner or the head pillar storage cover. The structure is welded to the inside of the vehicle body. However, in this structure, since the outer end of the frame in the vehicle width direction is coupled only to the front pillar inner, the coupling rigidity is weak and it is not sufficient to secure the torsional rigidity of the entire vehicle body. Also, since the front pillar outer is not reinforced by a frame etc., it will absorb large load when receiving a load from the hinge mounting part for door mounting, and if this is repeated, the hinge or front pillar outer will It deforms and becomes irreversible, resulting in poor door fit. In order to compensate for this, measures such as thickening the plate material of the component must be taken, which goes against the general tendency toward weight reduction.

The object of the present invention is to secure the joint rigidity between the frame and the front pillar by the components made of relatively thin plate materials.
It is an object of the present invention to provide a structure having a rigidity capable of ensuring the torsional rigidity of the entire vehicle body and sufficiently receiving a load applied from a hinge mounting portion for mounting a door.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a front pillar having a closed cross section by a front pillar outer having a front wall portion that is bent inward from a side wall portion and a front pillar inner. In the front body structure of a cab-over vehicle in which the front pillar is formed on the back surface of the front panel, the front pillar inner and the inside of the front pillar are provided with a U-shaped cutout opening toward the front of the vehicle. The front pillar outer side wall portion of the front pillar outer side wall portion of the front pillar outer surface of the front pillar outer surface of the front pillar outer wall of the front pillar outer surface of the front panel to form a closed cross section The frame having an open U-shaped cross section is installed between the front pillar outer and the frame. A bracket upper for defining a closed cross section formed by the frame and the door, and a bracket upper for partitioning the closed cross-section portion, and a door mounted on the vehicle body outer side surface of the side wall of the front pillar outer near the joint between the front pillar outer and the frame. And a hinge.

(Operation) The side surface of the front pillar outer and the end of the frame having a U-shaped cross section are joined to form a closed cross section between the front wall of the front pillar outer and the frame, and the closed cross section is formed by the bracket outer. And the front pillar inner to strengthen the joint between the frame and the front pillar to improve the torsional rigidity of the vehicle body, and the hinge mounting part has a high rigidity U-shaped frame, bracket outer, Since it is formed on the front pillar outer reinforced by the front pillar inner or the like, the rigidity of the hinge mounting portion is improved, and it absorbs the load from the hinge mounting portion without being largely deformed.

(Embodiment) Hereinafter, an embodiment of a vehicle body front portion stiffening structure of a cab-over vehicle according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an essential part of a vehicle body front portion stiffening structure of the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG. ), (B), (C), and (D) are cross-sectional views in (A), (B), (C), and (D) of FIG. 1. FIG. 9 is a perspective view of a main part of a front portion of a cab-over vehicle to which the present invention is applied.

As shown in FIG. 1, which is an enlarged perspective view in which the front panel 7 and the front side panel 7a of the A portion in the front part of the vehicle body shown in FIG. 9 are omitted, both side edges of the front pillar outer 1 and the front pillar inner 2 are respectively formed. Combined to form the front pillar. As shown in FIG. 3, the front pillar outer 1 has a substantially U-shaped cross section, and has a front wall portion 1A bent inward from the side wall portion 1C. As shown in FIG. 4, the front pillar inner 2 has a substantially flat plate shape, and is formed with a U-shaped notch 2A that opens in the front direction of the vehicle body to receive a bracket lower 6 having a U-shaped cross section, which will be described later.
Flange formed on the rear edge of the front pillar outer 1
1d and a flange formed on the rear edge of the front pillar inner 2
2d and a flange 1e formed on the end edge of the front wall portion 1A of the front pillar outer 1 and a flange 2e formed on the front edge of the front pillar inner 2 are overlapped and welded by spot welding or the like as shown in FIG. A front pillar having a closed cross section is formed.

Next, the flanges 6a, 6b, 6c, which are formed at the ends of the bracket lower 6 having a U-shaped cross section shown in FIG. 5, are formed on the inner side surface of the vehicle body of the side wall portion 1C of the front pillar outer 1, that is, by a chain line in FIG. The parts shown in FIG.
And a front wall portion 1A of the front pillar portion 2A to form a closed cross-section, and a bracket lower 6 is fitted in the notch portion 2A formed in the front pillar inner 2, and a flange formed at the periphery of the notch portion 2A of the front pillar inner 2 2f, 2g, 2h, 2i and the part indicated by the chain line on bracket lower 6 6f, 6g, 6h, 6i
Also, the end portions 3f, 3g, 3h, 3i of the frame 3 shown in FIG. 6 are overlapped and the overlapping portions are welded by spot welding or the like to fix the frame 3 to the front pillar.

Next, from the other ends 6j, 6k, 6m, 6n, 6p of the bracket lower 6 and the ends 3f, 3g, 3h, 3i of the frame 3, the parts 3j, 3k, 3m, 3n indicated by the alternate long and short dash line inside the vehicle body. , 3p and the ends 5j, 5k, 5m, 5n, 5p of the bracket upper 5 shown in FIG. 7 are overlapped and welded by spot welding or the like to partition and reinforce the U-shaped interior of the bracket lower 6, Flange 5q, 5r formed through the triangular partition plate portion 5A of the bracket upper 5 and the lower edge of the triangular cutout portion 1B formed below the flange 1e of the front wall portion 1A of the front pillar outer 1 The flanges 1q and 1r provided on the
The flange 1r provided on 1A and the end of the front panel 7 are overlapped with each other, and the overlapped portion is welded and joined to define the closed cross section formed by the front wall 1A of the front pillar outer 1 and the bracket lower 6. The upper and lower sides of the vehicle are closed by the bracket lower 6, the vehicle rearward direction is closed by the front pillar outer 1, and the vehicle inner direction is closed by the bracket outer 5 to form a completely closed cross section.
Reference numeral 7a is a front side panel formed continuously with the front panel 7.

Further, a door mounting hinge 4 is attached to the vehicle body outer surface of the front pillar outer 1 near the joint between the front pillar outer 1 and the bracket lower 6 having a U-shaped cross section by bolts, nuts or the like.

In the above description, the inner side surface of the front pillar outer 1 and the frame 3 having a U-shaped cross section are connected to each other via the bracket lower 6 continuous with the frame 3, but the frame 3 is extended to directly It is also possible to connect to the front pillar outer 1.

The stiffening structure for the front part of the vehicle body of the cab-over vehicle configured as described above connects the vehicle body side part of the front pillar outer 1 and the end part of the frame 3 having a U-shaped cross section to the end part of the frame 3 and the front pillar outer part 1. Of the closed cross-section formed by the front wall portion 1A of the vehicle is closed by the bracket outer 5 in the inward direction of the vehicle body and closed by the front pillar outer 1 in the outward direction of the vehicle body. Since the inner 2 and the frame 3 are joined together, the frame 3 and the front pillar can be firmly joined together to improve the torsional rigidity of the vehicle body, and the front is reinforced by the U-shaped frame 3, the bracket outer 5, and the front pillar inner 2. Since the mounting portion of the hinge 4 for mounting the door is formed on the pillar outer 1, it is possible to sufficiently receive the load applied from the hinge mounting portion.

(Effect) According to the present invention, a closed cross-section is formed by the side wall and the front wall of the front pillar outer and the frame having a U-shaped cross section, which is closed by the side wall.
In addition, by defining the closed cross section with the bracket upper, a completely closed cross section that is closed inward of the vehicle body is formed.
Furthermore, since the frame is received and coupled in the notched portion of the front pillar inner, deformation of the coupling portion between the frame and the front pillar outer is suppressed and the rigidity is greatly improved.
Moreover, the left and right front pillar outers are directly coupled by the frame, so that the torsional rigidity of the vehicle body can be improved, the weight of the components can be reduced, and the cost can be reduced while maintaining the high strength. Further, since the hinge mounting portion is provided on the reinforced front pillar outer, the rigidity that can sufficiently receive the load entering from the hinge mounting portion is obtained.

[Brief description of drawings]

FIG. 1 is a perspective view for explaining a connection state between a front pillar and a frame according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. FIG. 4 is a perspective view of the front pillar inner of the present embodiment, FIG. 5 is a perspective view of the bracket lower, and FIG. 6 is a perspective view showing an end portion of the frame. FIG. 7 is a perspective view of the bracket upper, FIG. 8 is a cross-sectional view taken along lines (a), (b), (c), and (d) of FIG. 1, and FIG. 9 is a cabover for explaining the present embodiment. FIG. 10 is a front perspective view of the vehicle, and FIG. 10 is a perspective view for explaining a connecting portion between the front and the front pillar of the conventional example. 1 ... Front pillar outer 1A ... Front wall 1B ... Side wall 2 ... Front pillar inner 3 ... Frame 4 ... Door mounting hinge 5 ... Bracket upper 6 ... Bracket lower

Claims (2)

[Scope of utility model registration request] 1. A front pillar having a closed cross section is formed by a front pillar outer (1) having a front wall portion (1A) bent inward from a side wall portion (1C) and a front pillar inner (2), This front pillar is a front panel (7)
A front pillar inner (2) having a U-shaped notch (2A) that opens in the front direction of the vehicle, and a notch (2A ) And is abutted and coupled to the inner side surface of the side wall portion (1C) of the front pillar outer (1) and the front wall portion (1A) of the front pillar outer (1) to form a closed cross section. A frame (3) having a U-shaped cross section, which is arranged on the back surface of the front panel (7) to be formed and which is open in the front direction of the vehicle body; and is installed between the front pillar outer (1) and the frame (3), A bracket upper (5) for partitioning a closed cross section formed by the front pillar outer (1) and the frame (3), and a vicinity of a connecting portion between the front pillar outer (1) and the frame (3). Vehicle front portion stiffening structure of the cab-over vehicle and having a vehicle body outer disposed doors mounting hinge on a side surface (4) of the side wall portion (1C) of the front pillar outer (1). 2. The front pillar outer (1) inner side surface of the vehicle body and a frame having a U-shaped cross section are connected to each other by a frame (3).
The vehicle body front portion stiffening structure of the cab over vehicle according to claim 1, which is made through a bracket lower (6) having a U-shaped cross section continuous with the above.