JPS6291379A - Reinforcing structure of dash lower panel - Google Patents

Abstract

PURPOSE:To improve rigidity without the occurrence of poor painting, by a method wherein, in the dash lower panel of a car, a reinforcing plate is obliquely joined astride between a longitudinal wall and a bottom wall on the car room side, and a closed sectional part is formed at a corner. CONSTITUTION:A bottom wall 17 of a dash lower panel 15 is bent from a longitudinal wall 16 about at right angles, a reinforcing plate 19 is obliquely joined from the car room side to form a closed sectional part 20, and skelton structure in the direction of a car width is formed without decreasing the area of a part around an underfloor. Since a reinforce 18 is joined with the longitudinal wall 16, rigidity can be further improved. Further, during electrodeposition painting of a car body, air in the closed sectional part 20 can be bled through an air bleed part 23, formed between a bead part 22 of a flange 19a at the upper end part of the reinforcing plate 19 and the longitudinal wall 16, and this enables reliable painting of all the corners.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a reinforcing structure for a darts lower panel that separates an engine compartment from a single compartment of an automobile.

BACKGROUND ART FIG. 4 shows a conventional reinforcement structure for a darts lower panel. In the figure, reference numeral 1 indicates a darts lower panel, and this darts lower panel 1 has a vertical wall 2 and a diagonal wall 3 on its lower side. and a substantially horizontal bottom wall 4 are bent and formed. A front floor 5 is joined onto the rear end of the bottom wall 4 to form a series of floor surfaces. On the outside of the slanted wall 3, a dash cross member 6 formed by bending at a substantially angle is joined to the vertical wall 2 and the bottom wall 4 to form a closed section 7, thereby forming a frame structure in the vehicle width direction. It consists of

This similar structure is shown in, for example, Japanese Utility Model Application Publication No. 58-121772.

Problems to be Solved by the Invention Since a rack for the steering mechanism (not shown) is installed on the front side of the darts lower panel, it is necessary to install a reinforcement on the single-chamber side in order to ensure the mounting rigidity of the rack mount. There is. However, since the diagonal wall 3 continues below the vertical wall 2 of the dash lower panel 1, the reinforcements 8 and 9 are applied to the vertical wall 2 and the dash cross member 6, as shown in FIG. It has to be discontinuously joined to the vertical wall 6a,
As a result, it becomes impossible to ensure sufficient strength on the front side of the dash panel. Further, an air vent hole 10 is formed in the upper part of the slanted wall 3 for venting air from the closed section section 7 during electrocoating of the car body. It has been pointed out that air accumulates in the corner between the inclined wall 3 and the vertical wall 6a of the dash cross member 6, and the electrodeposition coating solution does not reach the corner, causing rusting due to poor coating. Sleeping. Further, as described above, in order to form the air vent hole 10 in the upper part of the inclined wall 3 close to the joint between the upper end part of the m-wall 6a of the dash cross member 6 and the vertical wall 2 of the dash lower panel 1, the vertical wall 6a A sealing material 11 is applied to the joint part of the terminal, and the vertical walls 2, 6a are attached from the engine room side.
It has also been pointed out that since it is necessary to prevent water and dust from entering the vehicle interior through the joints between the two, the number of man-hours increases accordingly.

Therefore, the present invention is capable of further increasing the rigidity of the darts lower panel, and is capable of reliably separating the engine room and the single room without causing paint defects and without increasing the number of work steps. This provides a reinforcing structure for the needlework lower panel.

Means for solving the problem: The bottom wall of the darts lower panel is bent at a substantially right angle from the vertical wall, and a reinforcing plate is obliquely joined from the passenger compartment side to the vertical wall and the bottom wall. A closed section is formed at the corner formed by the vertical wall and the bottom wall.

Example Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 to 3, reference numeral 15 indicates a darts lower panel that separates the engine room from the passenger compartment, and its bottom wall 17 is bent at a substantially right angle from the vertical wall 16.

A bottom wall 17 is formed on the side surface of the vertical wall 16 on the side of the vehicle compartment from the upper end.
A reinforcement 18 is connected across the curved base of the vertical wall (6) to ensure mounting rigidity for the rack mount (not shown) of the steering mechanism disposed in front of the vertical wall (6). ] 9 is a reinforcing plate having flanges 19a and 19b at the upper and lower ends, and diagonally joined across the vertical wall 16 and bottom wall 17 of the lower panel 15 from the single room side via these flanges 191 and 19b. The corner l formed by the vertical wall ■6 and the bottom wall 17
The closed cross-section portion 20 is formed to constitute a frame structure in the vehicle width direction. In addition, the flange 1 at the upper end of the reinforcing plate 19
9a, a receiving portion 21 is recessed in a portion opposite to the reinforcement 18, so that the receiving portion 21 can be joined in alignment with the surface of the reinforcement 18.

Additionally, the flange 19a has bead portions 22 at multiple locations.
An air vent portion 23 is formed between the vertical wall 16 and the vertical wall 16.

According to the structure of the above embodiment, the bottom wall 17 of the darts lower panel 15 is bent at a substantially right angle from the vertical wall 16, and the reinforcing plate 19 is inserted from the passenger compartment side over the vertical wall 16 and the bottom wall 17. Since it is joined diagonally, the lower panel 1
The closed cross section 20 can be formed in a triangular shape on the lower side of the vehicle 5 in the same way as in the past, thereby providing a frame structure in the vehicle width direction, and also reducing the living space around the passenger's feet in the vehicle interior. do not have. Since the reinforcement 18 is continuously joined in a straight line from the upper side of the vertical wall 16 to the bent base of the bottom wall 17, the rigidity of the dart lower panel 15 can be further increased. In addition, when electrocoating a car body, the air in the closed cross-section section 20 is vented through the air vent section formed between the bead section 22 formed on the flange 19a at the upper end of the reinforcing plate 19 and the vertical wall 16. Therefore, air does not stay in the corner between the upper end of the reinforcing plate 19 and the vertical wall 16, and the corner can be reliably coated. Furthermore, the formation of the bead portion 22 does not impair the strength of the air bleed portion 23 in the slightest. Furthermore, since the reinforcing plate 19 is joined from the single-chamber side, the engine room and the passenger compartment can be reliably separated from each other without applying a sealant to the joints between the flanges 19 a , 19 b and the WIM 116 and the bottom wall 17 . This makes it possible to ensure sealing performance.

Effects of the Invention As described above, according to the present invention, the bottom wall of the darts lower panel is bent at a substantially right angle from the vertical wall, and the reinforcing plate is diagonally straddled between the vertical wall and the bottom wall from the single room side. Because it is joined to the vertical wall and the bottom wall, it is possible to secure a framework structure in the vehicle width direction consisting of a triangular closed section at the corner formed by the vertical wall and the bottom wall. Since the reinforcement can be continuously joined in a straight line from the bottom wall to the bent base of the bottom wall, the rigidity of the darts lower panel can be further increased. In addition, since it is possible to form an air release part by forming a bead at the joint between the upper end of the reinforcing plate and the vertical wall, the strength of the joint can be slightly reduced. Air can be vented from the corner formed by the vertical wall and the upper end of the reinforcing plate without damage, and the coating solution can be sufficiently distributed to the corner, thereby avoiding paint defects. be able to. Furthermore, this air bleed part is set on the reinforcing plate placed on the single-chamber side, and there is no need to drill holes in the darts lower panel, making it possible to reliably separate the engine room from the single-chamber. This has a great practical effect in that the number of assembly steps can be reduced because there is no need to fill the joint portion between the darts lower panel and the darts lower cross member with a sealant as in the conventional method.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main part of an embodiment of the present invention, FIGS. 2 and 3 are cross-sectional views taken along lines 1--1 and 11 in FIG. 1, and FIG. FIG. 2 is a cross-sectional view similar to FIG. 2 shown in FIG. 15... Datsushiroa panel, 16... Vertical wall, 17.
...Bottom wall, 19...Reinforcement plate, 20...Closed section.

Claims (1)

[Claims] (1) The bottom wall of the dash lower panel is bent at a substantially right angle from the vertical wall, and a reinforcing plate is obliquely joined from the passenger compartment side to the vertical wall and the bottom wall. A reinforcing structure for a dash lower panel characterized by a closed cross section formed at the corner.