JPH0356459Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement in the front body structure of an automobile.

(Prior art) In the case of an automobile body in which a petal bracket for a brake, clutch, etc. is attached to the back of a darts panel, as seen in Japanese Utility Model Application Publication No. 57-69762, there is a gap between the dash panel and the petal bracket. A reinforcing plate is interposed to increase the strength of the petal bracket attachment portion of the dash panel, but conventionally, this reinforcing plate has only been used to increase the strength of the above-mentioned petal bracket attachment portion. It was designed with this in mind.

Incidentally, in recent years, as the weight of vehicle bodies has been reduced and demands for safety have been increasing, in order to meet these demands, various aspects of the automobile body have been studied from various angles.

(Purpose of the invention) The purpose of the invention is to consider the above-mentioned reinforcing plate from the viewpoint of safety in automobiles in which the front frame is joined to the dash panel, and to increase the support rigidity of the petal bracket of the dash panel while preventing collisions. To provide a front vehicle body structure that enhances safety against intrusion of a front frame into a vehicle interior.

(Structure of the invention) In order to achieve this object, in the front body structure of an automobile according to the invention, a vehicle is provided between a darts panel joined to the front frame and a petal bracket attached to the darts panel. Basically, the reinforcing plate is provided with an extension portion that extends to the joint between the dash panel and the front frame, and the extension portion is joined to the dash panel at the joint between the front frame and the dash panel. It is said that

In addition, the extending portion of the reinforcing plate is provided with a bulging portion that protrudes toward the interior of the vehicle at approximately the center of the joint between the dash panel and the front frame; The lower end of the bracket extends to the bulge, and the lower end of the petal bracket is fixed to the bulge.

In the above configuration, the area of the reinforcing plate is expanded by the extending portion, and in addition, the lower end of the petal bracket is also extended and fixed to the extending portion of the reinforcing plate. Therefore, the supporting rigidity of the petal bracket can be increased. Further, since both the reinforcing plate and the petal bracket extend to the joint between the front frame and the dash panel, the collision load from the front frame is distributed to both the reinforcing plate and the petal bracket. In addition, the reinforcement plate
At the joint between the front frame and the dash panel, a bulge that protrudes toward the interior of the vehicle is provided to increase the surface rigidity of the reinforcing plate at that location, which helps to disperse the collision load and prevent collisions. This makes it possible to prevent the front frame from entering the vehicle interior. In addition, since the reinforcing plate is provided with the bulge to increase its surface rigidity, the membrane vibration (vibration in the plate thickness direction) of the reinforcing plate is reduced, thereby allowing the front frame to move from the front frame to the dash panel (inside the vehicle). ) will be suppressed.
In addition, the lower end of the petal bracket is fixed to the part of the reinforcing plate that has increased surface rigidity by providing the bulging part, which means that the lower end of the petal bracket is fixed to the part of the reinforcing plate that has high rigidity. Therefore, it is possible to further improve the supporting rigidity of the petal bracket.

(Example) FIGS. 1 to 4 show a front body structure of an automobile according to an example. In FIG. 3, reference numeral 1 denotes a lower dash panel, and the rear end of a front frame inner 2a of a front frame 2 extending in the longitudinal direction of the vehicle body is joined to the front surface of the lower dash panel 1 by welding. On the other hand, on the back of the darts panel lower 1,
A petal bracket 4 is attached via the reinforcing plate 3, and as shown in FIG. 4, an accelerator pedal 4a, a brake pedal 4b, and other handle support members (not shown) are attached to the petal bracket 4. It is becoming more and more common.

The lower end of the petal bracket 4 is the dash panel.
It is fixed to bolts 1a, 1a planted in the lower 1, and the rear end of the petal bracket 4 is bolted to the steering bracket lower 5, and the steering bracket lower 5 and steering bracket top 6 are connected to the dash panel top 7.
is attached to. In the figure, reference numeral 8 indicates a gusset for reinforcing the dash panel upper 7, and reference numeral 9 indicates a cowl front.

As shown in FIGS. 1 and 2, the darth panel lower 1 has a hole 10 for an air pressure booster, a clutch cable hole 11, a steering shaft hole 12, and an accelerator cable hole 13 on the driver's seat side.
etc., and a reinforcing plate 3 is joined at the position of the hole 10 for the air pressure booster.

The reinforcing plate 3 includes a petal bracket mounting portion 31,
It consists of an extension part 32 that hangs down from the petal bracket attachment part 31. Petal bracket mounting part 31
An air pressure booster hole 33 is bored in the petal bracket mounting portion 31, with the air pressure booster hole 33 aligned with the air pressure booster hole 10 of the dash panel 1 described above. It is joined to the back surface of the dash panel lower 1 by spot welding. The extending portion 32 of the reinforcing plate 3 is narrowed in width from the petal bracket mounting portion 31, and is connected to the above-mentioned dash panel lower 1 and front frame 2.
, and in this extension part 32,
The dash panel lower 1, the front frame inner 2a, and the reinforcing plate 3 are integrally joined by spot welding to the back surface of the dash panel lower 1. The illustrated cross marks indicate welding locations. This extended portion 32 is formed with a bulging portion 32a that protrudes toward the interior of the vehicle at approximately the center of the joint between the dash panel lower 1 and the front frame 2. The bolt 1a for fixing the petal bracket 4 is installed. On the other hand, the petal bracket 4 is
Its lower end extends to the bulge 32a of the reinforcing plate 3, and is fixed using the bolt 1a of the bulge 32a. That is, the petal bracket 4 has its lower end connected to the reinforcing plate 3.
It is fixed to the bulging part 32a of.

In addition, in Fig. 3, the symbol 2b indicates the front frame.
The outer numeral 14 indicates a wheel apron.

As described above, the area of the reinforcing plate 3 is expanded by the extending portion 32, and in addition, the lower end of the petal bracket 4 is also extended and fixed to the extending portion 32 of the reinforcing plate 3. Therefore, the supporting rigidity of the petal bracket 4 can be improved. Furthermore, since the reinforcing plate 3 and the petal bracket 4 are extended to the joint between the dash panel lower 1 and the front frame inner 2a, the collision load from the front frame 2 is distributed to the reinforcing plate 3 and the petal bracket 4. In addition, reinforcing plate 3
is provided with the above-mentioned bulge 32a at the joint between the front frame 2 and the darth panel lower 1, and this bulge 32a increases the surface rigidity, so that the front frame 2 is prevented from collapsing in the event of a collision. This will prevent intrusion into the vehicle interior. In addition, since the reinforcing plate 3 has increased surface rigidity due to the bulging portion 32a, membrane vibration (vibration in the left-right direction toward the drawing in FIG. 3) can be reduced.
It is possible to suppress vibration transmission from the front frame 2 etc. to the passenger compartment. Furthermore, since the part to which the petal bracket 4 is fixed is the bulged portion 32a of the reinforcing plate 3, which has increased surface rigidity, the supporting rigidity of the petal bracket 4 by the reinforcing plate 3 can be further increased.

(Effects of the invention) As is clear from the above explanation, according to the invention, the reinforcing plate is provided with an extended portion and a bulged portion.
By fixing the petal bracket to this bulge, in addition to improving the support rigidity of the petal bracket, the presence of the bulge also helps to disperse the collision load from the front frame, prevent the front frame from intruding into the passenger compartment. Therefore, the support rigidity of the petal bracket can be further improved, and vibration transmission from the front frame to the interior of the vehicle can be reduced due to the vibration prevention effect due to the presence of the bulge.

[Brief explanation of the drawing]

Figure 1 shows the darts panel with the reinforcing plate attached.
An enlarged view of the lower driver's seat side, Figure 2 is an overall front view of the dash panel lower, Figure 3 is A-A of Figure 1.
The line sectional view and FIG. 4 are enlarged views of essential parts showing a state in which a petal bracket to which an accelerator pedal, a brake pedal, etc. are attached is attached to a dash panel via a reinforcing plate. DESCRIPTION OF SYMBOLS 1...Dutch panel lower, 2...Front frame, 3...Reinforcement plate, 31...Petal bracket mounting portion, 32...Extension portion, 32a...Bulging portion, 4...Petal bracket.

Claims (1)

[Claims for Utility Model Registration] In an automobile body in which a reinforcing plate is joined to the back of a dash panel connected to a front frame, and a petal bracket is attached to the reinforcing plate, the reinforcing plate is attached to the front frame of the dash panel. The extension part is connected to the dash panel at the joint part between the dash panel and the front frame. A bulge protruding toward the interior of the vehicle is provided approximately at the center of the joint with the front frame, and the lower end of the petal bracket is extended to the bulge, and the lower end of the petal bracket is extended to the bulge. A front body structure for an automobile, characterized in that a portion is fixed to the dash panel at the bulge.