JPH0729027Y2 - Car body structure - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Field of Industrial Use The present invention includes a side sill that extends in the front-rear direction of a vehicle body and a front pillar that continuously extends from the front end of the side sill toward the upper side of the vehicle body. The present invention relates to a vehicle body structure including an automobile.

(2) Conventional Technology The vehicle body structure shown in FIGS. 6 to 8 is generally well known. The side sill Ss than the conventional 'is on the inner open face 01 ₃ of the side sill outer 01, the upper and lower weld flange 01 _1, 01 ₂ are formed on the lower edge, over these, the lower weld flange 01 _1, A side sill inner 02 that closes its inner open surface is polymer-welded to at least the front part of 01 ₂ and the upper and lower inner open surfaces 03 ₃ of the inside sill 03 are arranged so as to face the side sill outer 01. On the edge,
Attach the lower welding flanges 03 ₁ and 03 ₂ to the side sill outer 01
The upper and lower welding flanges 01 ₁ and 0 ₁₂ are welded to each other by sandwiching the side sill inner 02, and the front pillar Pf ′ is continuously extended upward from the front end of the side sill outer 01. The front pillar outer 05 and the open surface 05 ₁ , 06 _{1 of the} front pillar inner 06, which extends continuously upward from the front end of the side sill inner 02, are integrally welded together. A drain hole 04 is opened on the lower surface of the side sill outer 01.

(3) Problems to be Solved by the Invention By the way, in the above-mentioned conventional one, the upper and lower welding flange portions f ₁ ′ and f ₂ ′ of the side sill outer 01 and the inside sill 03, which are welded to each other with the side sill inner 02 interposed therebetween, are formed. Since they are aligned in the vertical direction, the side sill Ss ', particularly the connecting portion with the front pillar Pf' at its front end, is not structured to have high rigidity in any of the front-back, left-right, and top-bottom directions. .

Noise such as road noise enters the front pillar Pf ′ through the drain hole 04 opened in the side sill outer 01 of the side sill Ss and propagates upward, causing noise in the vehicle interior.

Since the lower welded joint flange portion f ₂ ′ projects below the lowermost surface of the side sill, rainwater or the like is likely to adhere to it, causing rusting.

There are issues such as.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle body structure capable of solving all the problems described above by making a slight improvement to the conventional one. .

B. Configuration of the Invention (1) Means for Solving the Problems In order to achieve the above object, the invention is a side sill extending in the front-rear direction of a vehicle body and a front pillar continuously extending above the vehicle body from the front end of the side sill. And a side sill outer body having upper and side welding flanges protruding from upper and side edges of an inner open surface, and at least an inner open surface of the side sill outer. A side sill inner that is polymer-welded so as to close the front portion, and upper and side welding flanges that are provided alongside the side sill outer with the side sill inner interposed and that protrude from the upper edge and the side edge of the inward opening surface are the side sill. And an inner sill that is polymer-welded with the side sill inner sandwiched between upper and side welding flanges of the outer. The top pillar is formed by polymerizing and welding the front pillar outer integrally extended above the front end of the side sill outer and the open surfaces of the front pillar inner integrally extended above the front end of the side sill inner to each other. A drain hole is opened in the lower surface of the inside sill.

(2) Operation According to the above configuration, the rigidity of the side sill of the vehicle body and the connecting portion between the side sill and the front pillar can be increased.

Further, noise such as road noise entering the side sill through the water drain holes on the lower surface of the side sill is blocked by the side sill inner and does not propagate to the upper part of the front pillar, so that the sound insulating performance is improved.

Furthermore, rusting of the weld flange of the side sill is suppressed.

(3) Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view of a side sill and a front pillar portion of an automobile body, FIG. 2 is a cross sectional view of the side sill taken along the line II-II in FIG. 1, and FIG. 3 is a line III-III in FIG. FIG. 4 is a cross-sectional view of a side sill and a front pillar connecting portion taken along the line.

The side sill Ss extending in the front-rear direction of the vehicle body B includes a side sill outer 1, a side sill inner 2, and an inside sill 3.
Are integrally welded to each other, and each of them is formed by press-forming a panel plate such as a steel plate.

The side sill outer 1 are formed on the cross-section angle shape having an inner open face 1 ₃ As shown in FIG. 2, the upper weld flange 1 ₁ projecting upwardly on the upper edge of the inner opening surface 1 ₃ But,
The side weld flange 1 ₂ projecting outward is formed at the side edges. And upper and side weld flanges
1 _1, 1 ₂ along surfaces are made different is their orientation to be substantially perpendicular to each other.

Of the side sill inner 2 side sill Ss, provided on the front including a connecting portion between the front pillar Pf, so as to close the front of the inner opening surface 1 ₃ of the side sill outer 1, it is沿設, the the upper edge 2 _1, the upper weld flange 1 ₁
To, and whose side edges 2 ₂ are polymerized in the lateral weld flange 1 _2. The side sill inner 2 may be provided over the entire length of the side sill Ss.

Further, the inside sill 3 is formed in a U-shaped cross section,
Its inner open surface 3 ₃ is沿設to the side sill outer 1 so as to face the side sill outer 1 across the side sill inner 2, each of the upper and side edges of the inner opening surface 3 ₃ above The upper and side welding flanges 3 ₁ and 3 ₂ projecting laterally are integrally formed. The upper welding flange 3 ₁ is the upper edge 2 ₁ of the side sill inner 2 and the upper welding flange 1 of the side sill outer 1. Polymerized to ₁ ,
The said lateral weld flange 3 ₂ is polymerized laterally weld flange 1 ₂ side edge 2 ₂ and side sill outer first side sill inner 2.

The upper weld flange 1 _{1 of} the side sill outer 1, the upper edge 2 ₁ of the side sill inner 2 and the upper weld flange 3 ₁ of the inside sill 3 are welded together, and the side weld flange 1 ₂ of the side sill outer 1 is also welded. tripartite lateral weld flange 3 ₂ side edge 2 ₂ and in the side sill 3 of the side sill inner 2 are also welded together. As shown in FIG. 2, the side sill Ss has upper and side welding flanges f ₁ and f ₂ on the upper and side sides, and is formed in a closed cross-section.

A water drain hole 4 is opened on the lower surface of the inside sill 3, and rainwater and the like that have entered the side sill Ss are discharged to the outside through the water drain hole 4.

The front pillar Pf integrally connected upward from the front end of the side sill Ss is formed by welding the front pillar outer 5 and the front pillar inner 6 to each other.

Front pillar outer 5 is erected integrally upwardly bent substantially at right angles from the front end of the side sill outer 1, the cross-section, formed in cross-section channel-shaped having its inner open face 5 ₁ To be done.

The front pillar inner 6 is the side sill inner 2
Is raised from the front end integrally upward, its cross section is formed in its cross-section channel-shaped having an inner open face 6 _1.

Front pillar outer 5 and front pillar inner 6
The inner open surfaces 5 ₁ and 6 _{1 of the above} are sealed and welded together to form a front pillar Pf.

Thus, the side sill Ss is the side sill outer 1, side sill inner 2 and inside sill 3, and the upper and side welding flange portions f ₁ and f ₂ project upward and sideward, and the directions of their surfaces are Since the side sill Ss and the side sill Ss are different so as to cross each other.
The connecting portion between and the flot pillar Pf has sufficient rigidity to withstand external force in any of the front-back, left-right, and up-down directions, and its deformation is prevented.

Even if external noise such as road noise enters the side sill through the water drain hole 4, it is blocked by the side sill inner 2 and is prevented from propagating to the upper portion of the front pillar Pf, which can contribute to noise reduction in the vehicle interior.

Further, since there is no weld flange portion extending below the side sill Ss, rusting caused by adhesion of rainwater or the like on the portion is significantly reduced.

A second embodiment of the present invention is shown in FIGS. 4 and 5, FIG. 4 is a sectional view of a side sill, and FIG. 5 is a transverse sectional view of a connecting portion between the side sill and the front pillar.

In the second embodiment, the same members as those in the first embodiment are designated by the same reference numerals.

The side sill inner 2 of the second embodiment are bent in cross-section angled so as to extend along the inner surface of the side sill outer 1, upper weld flange 1 ₁ of the upper edge 2 ₁ side sill outer 1 and side sill inner 2, 3 ₁ Sandwiched between
The upper side and the lower side thereof are welded to the inner surface of the side sill outer 1.

According to the second embodiment, the rigidity of the side sill Ss, especially the side sill outer 1 is further enhanced.

C. Effect of the Invention According to the present invention as described above, the rigidity of the side sill itself and the connecting portion between the side sill and the front pillar are increased, and their deformation is suppressed.

Further, propagation of noise such as road noise to the upper part of the front pillar is suppressed, which can contribute to noise reduction in the vehicle interior.

Furthermore, rusting of the welding flange of the side sill is reduced,
Its durability can be improved.

[Brief description of drawings]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a perspective view of a side sill and a front pillar portion of an automobile body, and FIG. 2 is a sectional view of the side sill taken along line II-II in FIG. , FIG. 3 is a sectional view of a connecting portion between the side sill and the front pillar along the line III-III in FIG. 1, FIGS. 4 and 5 show a second embodiment of the present invention, and FIG. A sectional view of the side sill, FIG. 5 is a sectional view of a side sill and a front pillar connecting portion, and FIGS. 6 to 8 show a side sill and a front pillar portion of a conventional automobile body, and FIG. 6 is a perspective view thereof. 6 is a sectional view taken along the line VII-VII in FIG. 6, and FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. B …… Body, Ss …… Side sill, Pf …… Front pillar 1 …… Side sill outer, 1 ₁ …… Upper welding flange, 1 ₂
…… Side weld flange, 1 ₃ …… Inner open surface, 2 …… Side sill inner, ₃ …… Inside sill, 3 ₁ …… Upper weld flange, 3 ₂ …… Side weld flange, 3 ₃ …… Inside Open side, 4 ... Drainage hole

Claims (1)

[Scope of utility model registration request] 1. A side sill (Ss) extending in the front-rear direction of the vehicle body (B) and a vehicle body (B) from the front end of the side sill (Ss).
Is a vehicle body structure including a front pillar (Pf) continuously extending above the side sills (Ss),
A side sill outer (1) having upper and side welding flanges (1 ₁ , 1 ₂ ) projecting from upper and side edges of the inner inward surface (1 ₃ ), and an inwardly open surface of the side sill outer (1). (1 ₃ ) A side sill inner (2) that is polymer-welded so as to close at least the front part, and an inward opening surface (3 ₃ ) installed alongside the side sill inner (2) with the side sill outer (1). ) The upper and side welding flanges (3 ₁ , 3 ₂ ) projecting from the upper and side edges of the side sill inner (2) on the upper and side welding flanges (1 ₁ , 1 ₂ ) of the side sill outer (1). ), And the front pillar (Pf) integrally extends above the front end of the side sill outer (1). Side sill in Open face (5 ₁ of a front pillar inner being extended integrally upward from the front end of (2) (6),
6 ₁ ) A vehicle body structure of an automobile, characterized in that they are formed by polymer-welding each other, and that a drainage hole (4) is further formed in the lower surface of the inside sill (3).