JPH1199965A - Body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a body structure that is able to effectively enhance the extent of supporting rigidity in a deck cross member and a front door. SOLUTION: A deck cross member bracket 4 to be joined with the end of a deck cross member 2 is joined to a front pillar outer reinforce 7 connected to the inner surface of a front pillar outer 5 and a closed section is formed, while an upper hinge reinforce 8 to be connected to the front pillar outer reinforce 7 is provided with an extension part 8a to be connected to a mounting surface 4c of the deck cross member 2 in the deck cross member bracket 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front body structure of a motor vehicle, and more particularly, to a connection between an end of a deck cross member extending in the vehicle width direction and supporting a steering shaft between left and right front pillars. Regarding the structure.

[0002]

2. Description of the Related Art Conventionally, as a configuration for suppressing vibration of a steering handle when a vehicle is running or when the vehicle is stopped and the engine is idling, and for increasing the support strength of a steering shaft at the time of a collision, for example, As shown in FIG. 6 (see Japanese Patent Publication No. 7-39271), a deck cross member 101 extending in the vehicle width direction between left and right front pillars 100 and a steering shaft 102 attached to the deck cross member 101 is provided. Are known. In this case, both ends of the deck cross member 101 are respectively connected to the left and right front pillars 100 via the deck cross member bracket 103.

[0003]

However, in the above-mentioned conventional vehicle body structure, since the deck cross member bracket 103 is welded only to the inner panel 100b of the front pillar 100, the deck cross member 101 and the front Since the strength rigidity of the joint portion of the pillar 100 is limited by the surface strength rigidity of the inner panel 100b and cannot be increased to a certain degree or more, it is difficult to secure a predetermined strength rigidity. Of the steering wheel is easily resonated (torsion or bending is generated), and the steering shaft is not strong enough to support the load that the steering shaft is pushed backward by the engine during a frontal collision of the vehicle. There was a problem of doing.

Further, since the upper hinge reinforcement 104 of the front door normally used along the outer panel 100a of the front pillar 100 is not associated with the deck cross member bracket 103, the front door support rigidity and the deck cross member In some cases, the support strength rigidity is increased by a separate component, which is wasteful.

Accordingly, an object of the present invention is to provide a vehicle body structure capable of effectively increasing the support rigidity of a deck cross member and the support rigidity of a front door.

[0006]

According to a first aspect of the present invention, a front pillar is formed by a front pillar outer and a front pillar inner, and is joined to an inner surface of the front pillar outer. The front pillar outer reinforcement and the deck cross member bracket are joined to form a closed cross section, and a part of this deck cross member bracket projects from the front pillar inner toward the passenger compartment, and the projection supports the steering shaft. With the end of the deck cross member to be attached, the support load of the deck cross member can be shared by the front pillar outer and the front pillar outer reinforcement, and the support strength rigidity of the deck cross member is increased.

According to a second aspect of the present invention, the hinge reinforcement which is joined to the front pillar outer reinforcement has an extension extending from a deck cross member mounting portion of the deck cross member bracket. The support strength rigidity of the member is further increased, and the support load of the front door can be shared by the deck cross member bracket, so that the support rigidity of the front door is increased.

According to a third aspect of the present invention, a front pillar is formed by a front pillar outer and a front pillar inner, and a deck cross member bracket is joined to a hinge reinforcement which is joined to an inner surface of the front pillar outer. A part of this deck cross member bracket is projected from the front pillar inner toward the passenger compartment, and the end of the deck cross member that supports the steering shaft is attached to this projected portion. The support load can be shared by the front pillar outer and the support load of the front door can be shared by the deck cross member bracket, so that the support strength rigidity of the deck cross member and the support rigidity of the front door are both increased.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vehicle body structure according to the present invention will be described in detail using embodiments with reference to the drawings.

[First Embodiment] FIG. 1 is a cross-sectional view taken along the line II of FIG. 5 showing a connecting portion between an end portion of a deck cross member and a front pillar according to a first embodiment of the present invention. In order to make the shape of the deck cross member bracket and the upper hinge reinforcements easy to understand in the drawing, the overall shape of the front pillar inner, the front pillar outer, and the front pillar outer reinforcement is omitted, and FIG. 3 is II in FIG.
FIG. 5 is a schematic configuration perspective view of the entire vehicle body taken along the line I-III.

As shown in FIG. 5, a deck cross member 2 extending in the vehicle width direction is provided between the left and right front pillars 1, and a steering shaft 3 is attached to the deck cross member 2. Both ends of the deck cross member 2 are connected to the left and right front pillars 1 via the deck cross member brackets 4, respectively. still,
In the drawing, reference numeral 2a denotes mounting brackets forming both end portions of the deck cross member 2.

As shown in FIGS. 1 and 2, the front pillar 1 forms a closed cross section by a front pillar outer 5 and a front pillar inner 6 each having a substantially hat-shaped cross section, and also has a substantially hat-shaped cross section inside thereof. A front pillar outer force 7 having a cross section is provided.

That is, the top surface 7a of the front pillar outer reinforcement 7 is spot-welded to the top surface 5a of the front pillar outer 5, and the joining flanges 7b and 7c of the front pillar outer reinforcement 7 are connected to the front pillar outer 5, respectively. The front pillar inner 6 is spot-welded between the joining flange portions 5b and 6b, 5c and 6c.

The deck cross member bracket 4 is
One side of a joint flange portion 4b formed in a rectangular box shape and attached to the periphery of the opening has a joint flange portion 5b of a front pillar outer 5 and a front pillar inner 6 together with a joint flange portion 7b of a front pillar outer reinforcement 7.
b and 6b are spot-welded, and the other side is a joining flange portion 7c of the front pillar outer reinforcement 7
, Front pillar outer 5 and front pillar inner 6
Is spot-welded to an inner portion which is not sandwiched between the joining flange portions 5c and 6c. Therefore, a closed cross section is formed by the deck cross member bracket 4 and the front pillar outer reinforcement 7 within a constant height cross section of the vehicle body.

A large part of the box-shaped main body of the deck cross member bracket 4 penetrates through the mounting hole 6a of the front pillar inner 6 and protrudes into the vehicle cabin. It is a mounting surface for the member 2. In the figure, 10 is a deck cross member bracket 4
These are holes for spot welding or the like formed in the bottom surface 4a of the above.

A top surface 5 of the front pillar outer 5 is provided inside the front pillar outer reinforcement 7.
a and the top 7 of the front pillar outer force 7
The upper hinge reinforcement 8 having a U-shaped cross section for reinforcing a is spot-welded to the front pillar outer 5.
Top surface 5a and front pillar outerlinforce 7
The upper hinge 7 of the front door (not shown) is fastened together with a bolt (not shown) to the top surface 7a of the front door 7a, and one side of the upper hinge 7 is attached to the mounting surface 4c of the deck cross member bracket 4. The extension 8a is spot-welded to the mounting surface 4c of the deck cross member bracket 4, and is fastened together when the mounting bracket 2a of the deck cross member 2 is fastened to the mounting surface 4c with the bolt 11. It has become so.

With this configuration, when assembling the vehicle body, first, the front pillar outer reinforcement 7, the deck cross member bracket 4, and the upper hinge reinforcement 8 are previously assembled by spot welding. Thereafter, the box-shaped main body of the deck cross member bracket 4 is penetrated through the mounting hole 6a of the front pillar inner 6, and one of the joining flange 7b of the front pillar outer reinforcement 7 and the joining flange 4b of the deck cross member bracket 4 is formed. The side portions are spot-welded by being sandwiched between the joint flange portions 5b, 6b of the front pillar outer 5 and the front pillar inner 6. On the other hand, the joint flange 7c of the front pillar outer reinforcement 7 is spot-welded between the joint flanges 5c, 6c of the front pillar outer 5 and the front pillar inner 6.

At this time, the joining flange portion 7c of the front pillar outer force 7 has no problem in three-layer stacking, but the joining flange portion 7b of the front pillar outer force 7 has the joining flange portion of the deck cross member bracket 4 in the joining flange portion 7b. 4b is added to form four sheets, and the bonding becomes unstable. Therefore, in the present embodiment, as shown in FIG.
A notch 12 is formed in the joining flange portion 7b of the front pillar outer force 7 at a predetermined interval in the vertical direction, and a part of the joining flange portion 5b of the front pillar outer 5 is driven into the notch 12 to form three notches. By forming the overlapped spot welds, a stable joining state is obtained.

The deck cross member 2 is fastened to the mounting surface 4c of the deck cross member bracket 4 assembled as described above with bolts 11 via mounting brackets 2a.

In the present embodiment, the joining flange portion 4b of the deck cross member bracket 4 is joined to the front pillar outer reinforcement 7 so as to form a closed section within a constant height section of the vehicle body. Because
The support load of the deck cross member 4 can be shared by the front pillar outer 5 side, and the front pillar 1 side against torsion (see arrow A in the figure) and bending (see arrow B in the figure) of the deck cross member 4 can be shared. Support rigidity increases. By increasing the rigidity of the deck cross member 4 in this way, it is possible to prevent the deck cross member 4 from easily resonating with the vibration on the vehicle body side and inducing steering wheel vibration.

In the present embodiment, the upper hinge reinforcement 8 is connected to the deck cross-member bracket 4.
Has an extended portion 8a that is joined to the mounting surface 4c of the deck cross member bracket 4 to further increase the support strength and rigidity of the deck cross member and reduce the support load of the front door.
And the support rigidity (building accuracy) of the front door is increased.

[Second Embodiment] FIG. 4 is a cross-sectional view taken along the line II of FIG. 5 showing a connection portion between an end portion of a deck cross member and a front pillar according to a second embodiment of the present invention.

This is because when the deck cross member bracket 4 in the first embodiment does not have the front pillar outer force 7 in the first embodiment, the upper door hinge mounting surface (top surface 5a) of the front pillar outer 5 is provided. This is an example in which the upper hinge reinforcement 8 is joined to the upper hinge reinforcement 8 to be joined, and the upper hinge reinforcement 8 and the deck cross member bracket 4 form a closed cross section within a constant height section of the vehicle body.

Specifically, one side of the upper hinge reinforcement 8 having a U-shaped cross section is extended to the mounting surface 4c of the deck cross member bracket 4, and the extended portion 8a is mounted on the deck cross member bracket 4. It is spot-welded to the surface 4c, and is fastened together when the mounting bracket 2a of the deck cross member 2 is fastened to the mounting surface 4c with the bolt 11. On the other hand, the other side portion of the upper hinge reinforcement 8 is also extended, and this other side portion 8b is joined with the joining flange portion 4 of the deck cross member bracket 4 and the joining flange portions 5b, 5b of the front pillar outer 5 and the front pillar inner 6.
Spot welding is carried out between the electrodes 6b.

Also in this embodiment, the support load of the deck cross member 2 can be shared by the front pillar outer 5 and the support load of the front door can be shared by the deck cross member bracket 4. Both the support rigidity and the front door support rigidity are increased.

The present invention is not limited to the above embodiments,
It goes without saying that various changes such as changes in the shape and material of each member can be made without departing from the spirit of the present invention.

[0027]

As described above, according to the first aspect of the present invention, the front pillar outer reinforcement joined to the inner surface of the front pillar outer and the deck cross member bracket are joined to form a closed cross section. A part of the deck cross member bracket protrudes from the front pillar inner toward the passenger compartment, and the end of the deck cross member that supports the steering shaft is attached to this protruding portion, so that the support load of the deck cross member is reduced by the front pillar outer. And the front pillar outer force, thereby increasing the support strength rigidity of the deck cross member and suppressing the handlebar vibration.

According to the second aspect of the present invention, the hinge reinforcement that is joined to the front pillar outer reinforcement has an extension that extends to the deck cross member mounting portion of the deck cross member bracket.
In addition to the effect of the first aspect of the present invention, the support load of the front door can be shared by the deck cross member bracket, and the effect of increasing the support rigidity of the front door is obtained.

According to the third aspect of the present invention, the deck cross member bracket is joined to the hinge reinforcement joined to the inner surface of the front pillar outer to form a closed cross section, and a part of the deck cross member bracket is used. Protrude from the front pillar inner toward the passenger compartment,
Since the end of the deck cross member that supports the steering shaft is attached, the support load of the deck cross member can be shared by the front pillar outer, and the support load of the front door can be shared by the deck cross member bracket. The effect of increasing both the support rigidity of the member and the support rigidity of the front door is obtained.

[Brief description of the drawings]

FIG. 1 illustrates a first embodiment of the present invention, in which the end portion of a deck cross member of a motor vehicle and a front pillar are joined together as indicated by I in FIG.
FIG. 2 is a sectional view taken along line I.

FIG. 2 is an explanatory perspective view of the same.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 shows a second embodiment of the present invention at the joint between the end of the deck cross member of the vehicle and the front pillar, as indicated by I in FIG.
FIG. 2 is a sectional view taken along line I.

FIG. 5 is a schematic configuration perspective view of the entire vehicle body.

FIG. 6 is a perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front pillar 2 Deck cross member 4 Deck cross member bracket 5 Front pillar outer 6 Front pillar inner 7 Front pillar outer reinforcement 8 Upper hinge reinforcement 10 Work hole 11 Bolt

Claims (3)

[Claims] 1. A front pillar is formed by a front pillar outer and a front pillar inner, and a front pillar outer reinforcement joined to an inner surface of the front pillar outer and a deck cross member bracket are joined to form a closed cross section. , A part of this deck cross member bracket is projected from the front pillar inner toward the passenger compartment,
The vehicle body structure is characterized in that an end of a deck cross member that supports a steering shaft is attached to the protrusion. 2. The vehicle body structure according to claim 1, wherein the hinge reinforcement that is joined to the front pillar outer reinforcement has an extension that extends to a deck cross member mounting portion of the deck cross member bracket. 3. A front pillar is formed by a front pillar outer and a front pillar inner, and a deck cross member bracket is joined to a hinge reinforcement joined to an inner surface of the front pillar outer to form a closed cross section. Part of the cross member bracket is projected from the front pillar inner toward the passenger compartment,
A vehicle body structure comprising an end portion of a deck cross member that supports a steering shaft.