JPH0727267Y2 - Car front body structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a front body structure of an automobile, and more particularly to a body structure near a front end portion of a side sill arranged on a floor side portion.

(Prior Art) Generally, in a front body structure, a side sill having a closed cross-section is disposed in a front-rear direction on a side portion of a floor panel in a vehicle width direction, a lower end of a front pillar is coupled to a front end of the side sill, and the side sill is connected. Is provided in front of the wheel house, and the side members are arranged in the front-rear direction at a position offset by a predetermined distance inward of the wheel house, that is, in front of the side sill and inward of the side sill in the vehicle width direction.

By the way, in the structure described above, for example, when an impact load is applied to the vehicle from the front, the impact load input to the side member cannot be received by the side member. May be adversely affected.

Then, as a method for solving the above problems, for example, it is conceivable to connect the side member and the side sill with a connecting panel, but simply connect the rear end of the side member and the front end of the side sill with a connecting panel. Only by doing so, it is difficult to effectively receive the impact load, effectively crash the front part of the vehicle body, that is, the engine room side, and reduce the damage to the interior side as much as possible.

The present invention has been developed in view of the above circumstances, and an object thereof is to easily receive an impact load input to the side member with a simple structure, and to adversely affect the cabin body as much as possible. (EN) Provided is a front body structure that does not extend to the side, and the front end portion of the side sill can be increased in rigidity and used as a jack-up point without using a separate reinforcing member.

(Means for Solving the Problems) However, the present invention provides an outer panel and an inner panel,
A side sill with a closed cross section formed by joining at the upper and lower welding flanges provided on these panels is arranged at the end of the floor in the vehicle width direction, and the side sill is offset inward in the vehicle width direction with respect to the side sill. In a front body of an automobile in which a side member is disposed in front of the side member, a connecting panel is disposed between a rear end of the side member and a front end of the side sill, and the side member side end of the connecting panel is disposed. Is provided with a reinforcing panel portion having a substantially concave cross section extending rearward from the side member, the side member is coupled to a front end portion of the reinforcing panel portion, and the reinforcing panel portion is provided at a rear end portion of the reinforcing panel portion. While a reinforcement is continuously provided on the side sill, the extension part extending rearward and extending along the side sill is provided at the side sill side end portion of the connection panel. And a vertical wall that extends below the extension panel and extends along the lower welding flange of the inner panel on the side sill is formed by connecting the vertical wall to the lower panel. The welding flange portion of the floor panel disposed on the upper surface of the connecting panel is interposed between the flange portion and the vertical wall of the extension panel portion and the welding flange portion of the floor panel to form the outer panel and the inner portion of the side sill. It is characterized in that it is connected to the lower welding flange portion of the panel, and the lower ends of the welding flange portions of the vertical wall and floor panel are at the same height as the lower ends of the lower welding flange portions of the side sills.

(Operation) According to the present invention, when an impact load is applied to the front of the vehicle, the load input to the side member is smoothly distributed to the reinforcement and the side sill via the connection panel, and the reinforcement is Since the impact load can be reliably received by the ment and the side sill, the damage to the cabin body where these reinforcements and the side sill are arranged is reduced, and the body in front of the cabin is more effectively crashed. It becomes possible.

That is, at the side sill side end portion of the connecting panel, an extension panel portion extending rearward and extending along the side sill is formed, so that the load input to the side member is smoothly slanted rearward by the extension panel portion. And, it can be efficiently released to the side sill.

Further, since the extension panel portion is joined to the side sill over its entire length, the joint area can be increased, and as a result, the joint strength can be improved and a large impact load can be withstood. Since the vertical wall of the extension panel and the welded flange of the floor panel are connected to the lower welded flanges of the outer panel and the inner panel of the side sill, and the lower ends thereof are at the same height, the connecting panel and the floor panel Since it is possible to form a four-piece component portion on the weld flange portion of the side sill and improve rigidity, the four-piece component portion can be jacked up without the need for a separate reinforcing member. It can be a point.

(Embodiment) A front body structure according to the present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 shows a front body of a sedan-type passenger car having an engine room in front of a passenger room. In the figure, (1) is a floor panel constituting a passenger compartment floor, and a front end portion of the floor panel (1) is obliquely upward. The cross member (10) is arranged in the vehicle width direction on the lower surface of the rising portion (11).

Further, the floor panel (1) has an outer panel (21) and an inner panel (22) at the vehicle width direction edge, and upper and lower welding flange portions (21) provided on both panels (21) and (22).
a) A side sill (2) formed by joining at (22a) and having a closed cross-section is disposed, and the front end of the side sill (2) also has a cross-section closure from the outer panel (31) and the inner panel (32). The lower ends of the front pillars (3) formed in a shape are joined together, and the front end of the side sill (2) and the lower end of the front pillar (3) are connected to the front fender apron (4) that constitutes a front wheel house.
The rear ends of are joined together.

Further, (5) is a side member mainly arranged in the front-rear direction in the engine room, and the side member (5) is located inside the front fender apron (4), that is, with respect to the side sill (2). It is arranged in the front-rear direction at a position offset inward in the vehicle width direction, and its rear end portion extends below the front end portion of the floor panel (1).

With the above configuration, in the illustrated embodiment, the rear end of the side member (5) and the side sill (2) are arranged.
The front end portion of is connected by a connecting panel (6) having the following structure.

That is, the connecting panel (6) extends from the rear end of the side member (5) outward in the vehicle width direction, that is, the front end of the side sill (2), as shown in FIGS. 1 and 2. A panel main body (61) extending obliquely rearward is provided, and a connecting flange (62) for connecting to the front fender apron (4) is integrally formed at a front edge of the panel main body (61). The panel body (61) is provided with a reinforcing panel portion (63) having a substantially concave cross section extending rearward from the side member (5) at an end portion on the side member (5) side. At the side sill (2) side end portion of (61), an extension panel portion (6) having a reverse L-shaped cross section that extends rearward and extends along the inner surface of the side sill (2).
4) are installed in series.

The extension panel portion (64) has a vertical wall (64a) extending downward along the entire length of the extension panel portion (64) and extending along the lower welding flange (22a) of the inner panel (22) of the side sill (2). Is forming.

Thus, the above connecting panel (6) is disposed on the lower surface of the floor panel (1), and the coupling flange (62) is spot welded to the front fender apron (4). Vertical wall (64a) and the inner panel (2
The floor panel (1) disposed on the upper surface of the connection panel (6) between the lower welding flange portion (22a) of 2).
Spot welding the vertical wall (64a) of the extension panel part (64) to the lower welding flange part (22a) of the inner panel (22) of the side sill (2) with the welding flange part (1a) of FIG. Accordingly, the vertical wall (64a) of the extension panel portion (64) and the welding flange portion (1a) of the floor panel (1) are connected to the lower welding flange of the outer panel (21) and the inner panel (22) of the side sill (2). The outer panel (21) of the side sill (2) is joined to the parts (21a) (22a) and the lower ends of the vertical wall (64a) and the weld flange part (1a) of the floor panel (1) are connected to the side sill (2).
And the lower weld flange (21a) of the inner panel (22)
It is flush with the bottom edge of (22a).

Furthermore, the lateral wall (64b) of the extension panel portion (64) and the rear end of the panel body (61) are connected to the floor panel (1).
Also spot weld.

The rear end of the side member (5) is connected to the recess of the front end of the reinforcing panel (63) by spot welding, and the reinforcing panel (63) is connected to the rear end of the reinforcing panel (63). ) Is disposed along the lower surface of the floor panel (1), and the reinforcement (7) is spotted on the floor panel (1). In addition to welding, the front end of the reinforcement (7) is joined to the rear end of the reinforcing panel (63) by spot welding.

Incidentally, reference numeral (65) in the figure denotes a rib projectingly provided on the panel body (61) of the connecting panel (6).

When an impact load is applied from the front to the vehicle having the above-mentioned front body structure, the impact load applied to the side member (5) is due to the extension of the side member (5) through the connecting panel (6). In addition to inputting to the reinforcement (7) provided in the side panel, input is also made to the side sill (2) via the connecting panel (6).

That is, the panel body (61) is the side member (5).
Extending diagonally rearward from the side sill (2),
Further, since the (5) extension panel portion (64) extending rearward is formed at the side sill side end portion of the panel body (61), even if a shock load is applied to the vehicle from the front, for example,
The impact load from the side member (5) toward the reinforcement (7) is, as indicated by an arrow X in FIG. 3, a panel body (61) and an extension panel portion (64) of the connecting panel (6). It is branched to the side sill (2) side in a diagonally rearward direction via the input and smoothly input, and the impact load is reliably shared and received by the reinforcement (7) and the side sill (2). Of.

Moreover, since the side sill (2) and the connecting panel (6) are joined by the vertical wall (64a) of the extension panel portion (64) extending along the welding flange portion (22a) of the side sill (2), Since the joining area can be increased, the joining strength can be increased, and therefore, even if the impact load is large, there is no risk of the welding between the extension panel portion (64) and the side sill (2) coming off.

In the above embodiments, the lower end of the front end portion of the side sill (2) has a lower welding flange portion (see FIG. 4) between the outer panel (21) and the inner panel (22) forming the side sill (2). 21a) and (22a), the welding flange portion (1a) of the floor panel (1) and the extension panel portion (6).
4) The vertical wall (64a) has a four-piece structure. For example, when jacking up a vehicle, the front end of the four-sided side sill (2) may be the jack-up point. It will be possible.

In the above embodiment, the reinforcement (7) is formed separately from the connecting panel (6), and the front end of the reinforcement (7) is formed at the rear end of the reinforcing panel (63). Although joined together, the reinforcement panel (63) may be integrally formed with the reinforcement (7).

(Effects of the Invention) As described above, according to the present invention, for example, when an impact load is applied to the vehicle from the front, the load input to the side member is dispersed to the reinforcement and the side sill via the connection panel. Since the impact load can be reliably and efficiently received by the reinforcement and the side sill, the passenger-side body in which the reinforcement and the side sill are disposed can be hardly damaged by the impact load. , It is possible to effectively crash the body in front of the cabin.

That is, since the extension panel portion extending rearward and extending along the side sill is formed at the side sill side end portion of the connecting panel, the load input to the side member is smoothly slanted rearward by the extension panel portion. And, it can be efficiently released to the side sill.

Further, since the extension panel portion is joined to the side sill over its entire length, the joint area can be increased, and as a result, the joint strength can be improved and a large impact load can be withstood. Since the vertical wall of the extension panel and the welding flange of the floor panel are connected to the lower welding flanges of the outer panel and the inner panel of the side sill, and the lower ends are at the same height, there are four components in the welding flange. Since it is possible to form the structure and the rigidity can be improved, it is possible to use the four-member structure as a jack-up point without separately requiring a reinforcing member.

[Brief description of drawings]

FIG. 1 is a partially omitted perspective view showing an embodiment of a front body structure according to the present invention, and FIG. 2 is a perspective view of a connecting panel,
FIG. 3 is a schematic configuration diagram of the front body structure, and FIG. 4 is a sectional view taken along line IV-IV in FIG. (1) …… Floor panel (1a) …… Welding flange (2) …… Side sill (21) …… Outer panel (21a) …… Welding flange (22) …… Inner panel (22a) …… Welding flange (5) …… Side member (6) …… Connecting panel (63) …… Reinforcing panel section (64) …… Extending panel section (64a) …… Vertical wall (7) …… Reinforcement

Claims (1)

[Scope of utility model registration request] 1. A side sill having a closed cross section, which is formed by joining an outer panel and an inner panel at upper and lower weld flanges provided on the both panels, is arranged at an end portion in the vehicle width direction of the floor, and with respect to the side sill. In a front body of an automobile in which a side member is provided in front of the side sill at a position offset inward in the vehicle width direction, a connecting panel is provided between a rear end of the side member and a front end of the side sill. Then, a reinforcing panel portion having a substantially concave cross section extending rearward from the side member is provided at an end portion of the connecting panel on the side member side, and the side member is coupled to the front end portion of the reinforcing panel portion and is reinforced. The rear end portion of the panel portion is provided with a reinforcement extending continuously rearward from the reinforcing panel portion, while the side sill side of the connecting panel is provided. In the portion, an extension panel portion extending rearward and extending along the side sill is continuously provided, and in this extension panel portion, a vertical wall extending below the extension panel portion and extending along the lower welding flange portion of the inner panel in the side sill is provided. And forming a welding flange portion of a floor panel disposed on the upper surface of the connecting panel between the vertical wall and a lower welding flange portion of the inner panel to form a vertical wall of the extension panel portion and the The welding flange of the floor panel is connected to the lower welding flanges of the outer panel and the inner panel of the side sill, and the lower ends of the welding flanges of the vertical wall and the floor panel are at the same height as the lower ends of the lower welding flanges of the side sill. The front body structure of the automobile, which is characterized by