JPH11310155A - Front pillar joint structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely transmit inputs during collision to a front pillar by use of a simple shape and to prevent the collapse of the cross section of the front pillar by enhancing the rigidity of the front pillar. SOLUTION: This joint structure is formed by placing pillar reinforcement 25 at the pillar outer 13 of a front pillar which forms the front edge of a front door opening, and joining the rear end of an apron member 30 to the pillar outer 13, the apron member 30 extending to the front of an automobile body. In this case, a flange 30d is formed at the rear end of the apron member 30 and is laid on and joined to the front wall 13e of the pillar outer 13 and the pillar reinforcement 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure around a front pillar which forms a front edge of a front door opening of an automobile.

[0002]

2. Description of the Related Art FIGS. 12 to 14 show the vicinity of a front pillar of a general automobile. In the figure, a front pillar 80 has a closed cross-sectional structure formed by joining a front edge and a rear edge of a pillar outer 81 and a pillar inner 82 having a hat-shaped cross section. A wheel arch portion 80a is formed in a lower portion of the front pillar 80 so as to be curved.
Rocker panel 83 extending in the front-rear direction of the vehicle body is provided at the lower end of Oa.
Are joined.

Conventionally, from the viewpoint of increasing the rigidity of the front pillar 80, a first half of the outer pillar 81 has
A pillar rear hose 84 is disposed, and a second pillar rear hose 85 is disposed in a lower half portion of the pillar inner 82. The lower end 84a of the first rear hose 84 and the upper end 85a of the second rear hose 85 are connected to the side of the vehicle. Sometimes wrapped visually.

Further, an apron member 88 as a supporting reinforcing member such as a fender apron and a fender panel is connected to the front pillar 80, and a rear end portion 88 a of the apron member 88 is attached to an outer wall 81 a of a pillar outer 81. it is generally joined by CO ₂ welding.

[0005]

[SUMMARY OF THE INVENTION However, in the structure in which CO ₂ welding to the outer wall 81a of the pillar outer member 81 of the apron member 88 as described above prior art, as shown in FIG. 13, to the apron member 88 during a frontal collision The impact force F is received only by the welded portion 89 of the apron member 88, and a load in the shear direction is applied to the welded portion 89. In some cases, the welded portion 89 may be peeled off. As a result, the input to the apron member 88 cannot be sufficiently transmitted to the front pillar 80.

In Japanese Patent Application Laid-Open No. 8-142912, a recess extending in the vehicle front-rear direction is formed in the outer vertical wall of the cowl side upper member, and the flange of the recess is connected to the front vertical wall of the front pillar outer. A structure has been proposed in which the front pillar is used to receive an input at the time of a collision. However, the structure in which the concave portion is formed in the cowl upper member as in this conventional publication has a problem that the shape of the cowl upper member is complicated.

In the above-described structure in which the first and second pillar rein hoses are provided, the lap portion between the two becomes a break point on rigidity, and therefore, there is a possibility that the cross-sectional shape of the front pillar collapses due to an input at the time of collision. is there. In particular, when the apron member is located in the wrap portion, the impact force is directly applied to the wrap portion via the apron member, and it is considered that the collapse of the cross-sectional shape is remarkable. Have been.

The present invention has been made in view of the above-mentioned conventional situation, and it is possible to reliably transmit an input at the time of a collision to a front pillar with a simple shape, and to improve the rigidity of the front pillar to prevent collapse of a sectional shape. It is an object of the present invention to provide a front pillar joint structure of a vehicle that can prevent the front pillar.

[0009]

According to the first aspect of the present invention, a pillar rein hose is provided on a pillar outer of a front pillar forming a front edge of a front door opening, and a rear end of an apron member extending forward of the vehicle body is joined. In the front pillar joining structure for an automobile, a flange is formed at a rear end of the apron member, and the flange is overlapped and joined to a front wall portion of the pillar outer and the pillar rein hose.

[0010] The invention according to claim 2 is that the lower end of the first pillar rein hose arranged in the pillar outer of the front pillar forming the front edge of the front door opening and the inner pillar of the front pillar are arranged. In a front pillar joint structure for an automobile, wherein the upper end of the second pillar rein hose is disposed so as to substantially overlap with the upper end of the second pillar rein hose in a vehicle side view, the lower end of the first pillar rein hose is connected to the inside of the front pillar in the vehicle width direction. It is characterized in that it is bent so as to cross, and the bent part is overlapped and joined to the upper end of the second pillar rein hose and the pillar inner.

According to a third aspect of the present invention, a lower end of a first pillar rein hose disposed in a pillar outer of a front pillar forming a front edge of a front door opening, and disposed in a pillar inner of the front pillar. A front pillar joint structure of an automobile, wherein the upper end of the second pillar rein hose is disposed so as to substantially wrap in a side view of the vehicle, and a rear end of an apron member extending forward of the vehicle body is joined to a pillar outer of the wrap portion. Forming a flange at the rear end of the apron member, overlapping the flange with the front wall of the pillar outer and the first pillar rein hose, and joining the lower end of the first pillar rein hose to the inside of the front pillar. A bend is formed so as to cross the vehicle width direction, and the bend is overlapped with and joined to the second pillar rein hose and the pillar inner. It is characterized in that was.

[0012]

In the front pillar joining structure according to the first aspect of the present invention, a flange is formed at the rear end of the apron member, and the flange is joined to the front wall of the pillar outer and the pillar rein hose so as to overlap. , The collision input can be transmitted to the front pillar via the apron member,
There is an effect that the collision energy can be reliably received and received by the entire front pillar, and the impact absorbing power can be improved.

[0013] Further, since the structure only needs to form a flange on the apron member, the shape can be simplified as compared with the case where a conventional concave portion is formed.

According to the second aspect of the present invention, the lower end of the first pillar rein hose is bent so as to cross the inside of the front pillar, and the bent portion is overlapped with the upper end of the second pillar rein hose and the pillar inner. Because of the joint, a closed cross section can be formed in the wrap portion of the front pillar, and since the bent portion functions as a bulkhead, the rigidity of the entire front pillar can be improved, and the cross-sectional shape of the front pillar collapses due to input during a collision There is an effect that can be prevented.

According to the third aspect of the present invention, the flange of the apron member is overlapped and joined to the front wall of the pillar outer and the first pillar rein hose, and the lower end of the first pillar rein hose is traversed in the front pillar. And the bent portion is overlapped and joined to the second pillar rein hose and the pillar inner, so that the rigidity at the joint between the apron member and the front pillar can be further increased, and the effect of absorbing the impact force can be further improved. Can be improved.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 11 are views for explaining a front pillar joint structure of an automobile according to an embodiment of the present invention.
3 is a side view around the front pillar, FIG. 3 is a cross-sectional view of the front pillar, FIG. 4 is a perspective view of a joint between the front pillar and the apron member, and FIGS. 5 to 10 are cross-sectional views of the front pillar joint, respectively. 1 is a perspective view of an automobile.

In FIG. 1, reference numeral 1 denotes a one-box type automobile, and a vehicle body 2 of the automobile 1 has front doors 5 and side doors 6 disposed in a front door opening 3 and a rear door opening 4 formed in a side panel 2a, respectively. It is of a schematic structure.

The front door opening 3 has a front pillar 10 forming a front edge of the opening 3, a rocker panel 11 connected to a lower end of the front pillar 10 and forming a lower edge of the opening 3, A center pillar 12 is connected to the rocker panel 11 and the front pillar 10 and forms a rear edge of the opening 3.

The front pillar 10 comprises an inclined portion 10a forming left and right edges of a front window opening, a vertical portion 10b to which a dash panel is connected, and a wheel arch portion 10c for covering a front wheel. Is formed with a hinge portion 10d for pivotally supporting the front door 5.

Further, the front pillar 10 includes front pillars 13a, 14a of a pillar outer 13 and a pillar inner 14 having a hat-like cross section, and rear flanges 13b, 1b.
4b are joined by spot welding to form a box-shaped closed cross section. A substantially U-shaped coupling member 17 is disposed between the pillar outer 13 and the pillar inner 14 of the wheel arch portion 10c, and left and right flanges 17a, 17 of the coupling member 17 are provided.
b denotes the front flange 13 of the pillar outer 13
a, the front flange 14a of the pillar inner 14 is joined.

The pillar outer 13 has a structure integrally formed over the entire periphery of the front door opening 3 and also serves as an outer panel of the rocker panel 11 and the center panel 12.

The pillar inner 14 is integrally formed with a fender portion 14c extending forward of the vehicle body.
A front fender apron 15 is joined to the front edge of c. A radiator support 16 is provided between the front ends of the left and right fender aprons 15.

The front end 20a of the rocker inner 20 of the rocker panel 11 is joined to the lower rear end 14d of the pillar inner 14 in an overlapping manner. Inside the rocker panel 11, a rectangular tube-shaped rocker-in hose 21 having a closed cross section is disposed, and four of the rocker-in hoses 21 are joined to the pillar outer 13 and the rocker inner 20 in an overlapping manner. Outer side 2 of this locari in hose 21
The front end flange 21a 'of 1a is joined to the coupling member 17, and the inner side 21b extends so as to be located forward of the joint between the pillar inner 14 and the rocker inner 20 (see FIGS. 9 and 10).

In the front pillar 10, first and second
Pillar in hoses 25 and 26 are provided. The first pillar rein hose 25 is disposed substantially along the vertical portion 10b, and the upper edge portion 25c of the first pillar rein hose 25 is inclined.
Of the wheel arch 10
c to the upper edge. The first pillar rein hose 25 has a hat-shaped cross section formed along the pillar outer 13, and the front and rear flanges 25a and 25b are formed with the front flanges 13a, 14a and the rear flange 13 respectively.
b and 14b are overlapped and joined.

The second pillar rein hose 26 is disposed substantially along the wheel arch portion 10c, and the upper edge portion 26c of the second pillar rein hose 26 extends to near the lower edge of the vertical portion 10b. The first pillar rein hose 25
Is wrapped with the lower edge portion 25d in a vehicle side view. The lower edge 26d of the second pillar rein hose 26 is connected to the pillar inner 14 in the rocker panel 11 and the rocker inner 20.
It extends so that it may be located at the back of the vehicle body from the joint part.

The front flange 26a of the second pillar rein hose 26 is joined to the front flange 14a of the pillar inner 14 so as to overlap with the connecting member 17, and the rear flange 26b is connected to the pillar outer 13, the rear flange 13b of the pillar inner 14 and 14b. And are joined together. The outer side 21a of the loccaly hose 21 is joined to the lower end 26e of the second pillar-in hose 26.

As shown in FIGS. 5 and 6, a bent portion 25f extending diagonally inward so as to cross the inside of the front pillar 10 in the vehicle width direction is integrated with the lower end 25d of the first pillar rein hose 25. Is formed. The front edge 25g of the bent portion 25f is connected to the upper end 25 of the second pillar rein hose 26.
c and the pillar inner 14 and the connecting member 17 are overlapped and joined together, and the rear end (not shown) of the rear end 26b of the second pillar rein hose 26 and the pillar outer 1
3. The pillar inner 14 is overlapped and joined to the joint with the rear flanges 13b, 14b.

The second pillar rein hose 26 is provided with a third pillar rein hose 27 extending substantially in parallel with the second pillar rein hose 26. An upper end portion 27 of the third pillar rein hose 27 is provided.
a is joined to the lower surface of the bent portion 25f, and the central portion 27b
Is connected to the second pillar rein hose 26 and the connecting member 17 and is joined thereto.
1 is joined to the outer side 21a (see FIGS. 5 to 8).

At the lower end of the vertical portion 10b of the front pillar 10, an apron member 30 extending forward of the vehicle body is provided. The apron member 30 is a wrap portion of the first and second pillar rein hoses 25 and 26. Are located in The apron member 30 has a U-shaped cross section including a top wall 30a extending parallel to the fender portion 14c of the pillar inner 14 and side walls 30b, 30b extending inward from the top wall 30a. A flange 30c is formed on each side wall 30b, and the flange 30c is joined to the fender 14c and the front fender apron 15.

The top wall 30a of the apron member 30,
A U-shaped flange 30d is formed at the rear edge of each side wall 30b. The flange 30d is in contact with the front wall 13e of the pillar outer 13, and is spot-welded so as to overlap the front wall 13e and the front wall 25e of the first pillar rein hose 25. This apron member 30
Is connected to the pillar inner 14 and thereafter the pillar inner 14
Together with the pillar outer 13.

Next, the operation and effect of this embodiment will be described. According to the joint structure of the present embodiment, the apron member 3
0, a flange 30d is formed at the rear end.
Is overlapped and joined to the front wall 13e of the pillar outer 13 and the front wall 25e of the first pillar rein hose 25.
The input at the time of a frontal collision can be transmitted to the front wall 13e of the pillar outer 13 via the apron member 30 and can be reliably transmitted to the front pillar 10 via the first pillar rein hose 25, and the impact force can be transmitted to the entire front pillar 10. And can improve the shock absorption capacity.

Further, since a structure in which only the flange 30d is formed at the rear end of the apron member 30 is sufficient, the shape can be simplified as compared with the case where a conventional concave portion is formed, thereby suppressing an increase in cost.

In the present embodiment, a bent portion 25f is formed at the lower end portion 25d of the first pillar rein hose 25 so as to extend inward in the vehicle width direction inside the front pillar 10, and a front flange 25g of the bent portion 25f is formed. Since the upper end portion 25c of the second pillar rein hose 26 and the pillar inner 14 and the flange 17b of the connecting member 17 are overlapped and joined, four lap portions of the first and second pillar rein hoses 25 and 26 of the front pillar 10 are provided. A closed cross section can be formed in the front pillar 10, the rigidity of the entire front pillar 10 can be improved, and the collapse of the cross section at the time of collision can be prevented.

Further, since the bent portion 25f of the first pillar rein hose 25 functions as a bulkhead, the rigidity of the entire front pillar can be improved from this point, and the collapse of the cross-sectional shape can be more reliably prevented.

In this embodiment, since the apron member 30 is joined to the wrap portion of the front pillar 10, the rigidity of the joining portion between the apron member 30 and the front pillar 10 can be greatly increased, and the action on the apron member 30 can be achieved. Can be transmitted to the front pillar 10 without fail.

[Brief description of the drawings]

FIG. 1 is a side view for explaining a front pillar joining structure of an automobile according to an embodiment of the present invention.

FIG. 2 is a side view of a lower portion of the front pillar.

FIG. 3 is a sectional view of an apron member joining portion of the front pillar (a sectional view taken along line III-III in FIG. 1).

FIG. 4 is a perspective view of an apron member joint of the front pillar.

FIG. 5 is a sectional view of the front pillar (V- in FIG. 2).
V line sectional view).

FIG. 6 is a sectional view of the front pillar (VI in FIG. 2).
-VI line cross section).

FIG. 7 is a sectional view of the front pillar (VI in FIG. 2).
I-VII line cross section).

FIG. 8 is a sectional view of the front pillar (VI in FIG. 2).
II-VIII sectional view).

FIG. 9 is a sectional view of a joint portion between the front pillar and the rocker panel (a sectional view taken along line IX-IX in FIG. 2).

FIG. 10 is a cross-sectional view of the rocker panel (X- in FIG. 2).
X-ray cross section).

FIG. 11 is a perspective view of the automobile.

FIG. 12 is a side view of a conventional general front pillar.

13 is a sectional view of the front pillar (FIG. 12).
AA sectional view of FIG.

14 is a sectional view of the front pillar (FIG. 12)
BB line sectional view).

[Explanation of symbols]

 Reference Signs List 1 automobile 3 front door opening 10 front pillar 13 pillar outer 13e front wall 14 pillar inner 25 first pillar rein hose 25d lower end 25f bent portion 26 second pillar rein hose 26c upper end 30 apron member 30d flange

Claims (3)

[Claims] 1. A front pillar joint structure for an automobile, comprising a pillar outer hose provided on a pillar outer of a front pillar forming a front edge of a front door opening, and a rear end of an apron member extending forward of the vehicle body. A front pillar joint structure for an automobile, wherein a flange is formed at a rear end of the apron member, and the flange is overlapped and joined to a front wall portion of the pillar outer and the pillar rein hose. 2. A lower end portion of a first pillar rein hose arranged in a pillar outer of a front pillar forming a front edge of a front door opening, and a second pillar rein arranged in a pillar inner of the front pillar. In a front pillar joint structure for an automobile, wherein the upper end of the hose is disposed so as to substantially wrap in a vehicle side view, the lower end of the first pillar rein hose is bent so as to cross the front pillar in the vehicle width direction. A front pillar joint structure for a motor vehicle, wherein the bent portion is formed and joined to the upper end of the second pillar rein hose and the pillar inner. 3. A lower end of a first pillar rein hose disposed in a pillar outer of a front pillar forming a front edge of a front door opening, and a second pillar rein disposed in a pillar inner of the front pillar. In a vehicle front pillar joining structure in which an upper end portion of a hose is disposed so as to substantially wrap in a vehicle side view, and a rear end of an apron member extending forward of the vehicle body is joined to a pillar outer of the wrap portion, A flange is formed at the rear end, and the flange is overlapped and joined to the front wall of the pillar outer and the first pillar rein hose, and the lower end of the first pillar rein hose is traversed in the front pillar in the vehicle width direction. And the bent portion is overlapped and joined to the second pillar rein hose and the pillar inner. Vehicle front pillar joint structure.