JPS61263874A - Front suspension support section structure in automobile - Google Patents

Abstract

PURPOSE:To enhance the binding rigidity of a transverse ring gusset having its base section coupled to the lower surface of a dash board panel, by adding a gusset reinforcement having a specific shape. CONSTITUTION:A suspension mount member 5 is jointed, bridging between the front surface of side section of a dash lower cross member 2 constituting a dash board panel section together with a dash lower panel 1, and a front side member 4. The base section 6a of a transverse ring gusset 6 is jointed to the lower surface of the member 2, having an overhanging section 6b being jointed to the lower section of the member 5. In this arrangement, a gusset reinforcement 10 to be jointed to the lower surface of the member 2 is jointed to the upper surface of the base section 6a, and a flange section 12 formed by bending the front edge of the extension 11 thereof is jointed to the front surface of the member 2 at a position in which it is offset in the vehicle widthwise direction relative to the overhanging section 6b.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a front suspension support structure for an automobile, particularly a front engine front drive CF-F)ffi vehicle.

Conventional technology Figures 3 to 5 show the front suspension support structure of the conventional F@F@fu.
The lower front edge KI of this needlework lower panel 1 and the letter-shaped needlework lower cross member 2 are joined to form a wedge-shaped closed cross-section part 3f. Schroer cross member 2 constitutes the dash panel section that defines the rear wall of the engine room.
A suspension mount member 5 consisting of an outer panel 5m and an inner panel 5b is joined across the front side of the lower cross member 2 and the front side member 4. It is designed to support one end of the transverse link. 6 is a transverse link gusset with an inverted 4-shaped cross section, and the base portion 6. a. An overhang part 6b that is joined to the lower surface of the dash lower cross member 2 and projects forward from the dash lower cross member 2 is joined to the lower part of the suspension mount member 5, specifically, the outer panel 5a and the inner panel. 5
This is a placket joined to the lower surface of the overhang part 6b.
The front edge of the overhang part 6b and the green placket part 8 formed in the lower part 111r of the suspension mount member 5 are designed to support one end part of the above-mentioned transverse link. This similar structure is, for example, JP-A-57-
It is shown in Japanese Patent No. 209473.

The problem that the invention attempts to resolve is that the transverse link gusset 60 is joined by spot welding W at multiple locations on the bottom 11iK of the bellows portion 6a and lower cross member 2. In order to avoid interference with E, and because it is necessary to secure placement space for the various pipes P that are collected on the side of the darts lower cross member 2, the overall width dimension is restricted to be small. It has been pointed out that the bonding area of the spacer 6a is naturally limited to a narrow area, resulting in insufficient bonding rigidity. Also,
In this way, @ rounding with small dimensions, opart ring part 6
It has also been pointed out that the buckling strength of the base of b is low.

SUMMARY OF THE INVENTION Therefore, the present invention provides a front suspension support structure for an automobile that can further increase the joint rigidity and strength of the transverse link gusset without increasing the width of the transverse link gusset.

Means for determining the problem In a structure in which the pace part of the transverse link gusset is attached to the lower surface of the dash panel part, and the overhang part of the skeleton transverse link gusset is joined to the lower part of the suspension mount member, A cassette reinforcement, which extends and is joined to the center side of the lower surface of the dash panel and above the base of the overhang part, is joined to the upper surface of the pace part of the transverse link gusset, and the front part of the extension part of the cassette reinforcement is joined. IIkK, a 7-rank part that rises above the base of the overhang part and is joined to the front surface of the dash panel part at a part that is offset in the vertical direction from the overhang part is bent and molded.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, with the same reference numerals assigned to the same parts as in the conventional structure.

In Figure 1.2, a suspension mount member 5 is joined across the front side of the darts lower cross member 2 and the front side member 4, which together with the darts lower panel 1 constitute the dash panel section. The pace part 6a of the transverse link gusset 6 is joined to the lower surface of the transverse link gusset 2, and the overhang part 6
b is joined to the lower side of the suspension mount member 5, and the basic structure in which the suspension mount member 5 supports one end of the transverse link of the front suspension (not shown) is similar to the conventional structure described above. It is similar to

Here, the upper surface of the transverse link gusset 60 pace portion 6a is joined to the lower surface of the dash lower cross member 2 together with the pace portion 6a, and the center side of the lower surface of the dash lower cross member 2 and the overhang portion 6b are connected to the lower surface of the dash lower cross member 2. Cassette reinforcement 1 extending and joining on the base
0 is joined. In addition, multiple welding holes (not shown) are drilled in the part of the transverse link gusset 6 that is compatible with the cassette reinforcement 1O, and the transverse link gusset 6 and the darts are connected through these holes. The front edge of the extending portion 11 of this gusset train 7 os 10 is directly spot welded to the across member 2 to avoid spot welding of three sheets. The 7-rank part 12 is bent and joined to the front surface of the darts lower acro 7-men'' 2 at a portion that rises upright and is offset in the vehicle width direction from the over-solder portion 6b.

According to the above embodiment structure, one of the extending portions 11 of the cassette reinforcement 10 joined to the upper surface of the pace portion 6a of the transverse link gusset 6 extends to the center side of the lower surface of the dash lower cross member 2, and extends to the lower surface of the dash lower cross member 2. Since it is joined to the lower surface of the cross member 2, the joint area of the spacer 6a is not substantially expanded, and the number of hot welding W points can be increased, so that the joint rigidity can be increased.
Moreover, in consideration 1 of the extension portion U on the lower surface side of the dash lower cross member 2, the bent 7-rank portion 12 is inserted into the front surface of the dash lower cross member 2 and joined.
Since the joint portion of the flange portion 12 receives a load in the shear direction, combined with the increase in the number of spot welding W points, the joint rigidity can be further increased. Further, the other of the extending portions 11 of the cassette reinforcement IO extends over and is joined to the base of the overhang portion 6b, and furthermore, the front edge thereof has a series of seven rank portions 12, that is, the above-mentioned In the part offset in the K11li direction, a series of 7-rank members joined to the front surface of the dash lower cross member 2 are bent and formed, so that the buckling strength of the base of the overhang part 6b can be further increased. be.

On the other hand, since the width dimension of the transverse link gusset 6 itself does not change, piping space for the various pipes P can be secured and interference with the engine E can be avoided in the same manner as in the past.

Effects of the Invention As described above, according to the present invention, the cassette reinforcement joined to the upper surface of the pace portion of the transverse link gusset is attached to the center side of the lower surface of the dash panel, and on the base of the overhang portion of the transverse link gusset. Since the gussets extend and are connected to each other, the joint area of the pace part can be increased without increasing the width dimension of the transverse link gusset. A part of the rank part is joined to the front of the dash panel part, and this joint part receives the load in the shear direction, so together with the increase in the joint area of the pace part, the joint rigidity can be significantly increased. Moreover, on the base of the overhang part, there is an extension part having a 7-rank part that rises from the front edge and connects to the lower surface of the dash panel, so that the base part of the overhang part is buckled. It has a great practical effect of being able to increase strength and further improve reliability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main parts of an embodiment of the present invention, FIG. Figure 3 is a perspective view showing the main parts of the conventional structure, Figure 4 is a plan view showing the relationship between the transverse link gusset and the lower cross member, and Figure 5 is taken along line V-V in Figure 3. FIG. l... Datsushi lower panel (dash panel part), 2
...Datsushi lower cross member (dash panel part)
, 4... Front sight member, 5... Suspension mount member, 6... Transverse link gusset, 5a... Pace fRs, 6b... Overhang part, lO... Cassette reinforcement, 11
...Extension part, retainer...72nd part□ Fig. 4

Claims (1)

[Claims] (1) Join the suspension mount member that supports the transverse link of the front suspension across the front side of the dash panel that defines the rear wall of the engine room and the front side member, and attach it to the bottom surface of the dash panel. In a structure in which the base part of the transverse link gusset is joined and the overhang part protruding forward from the dash panel part is joined to the lower part of the suspension mount member, a dash is attached to the upper surface of the base part of the transverse link gusset. A cassette reinforcement extending from the center side of the lower surface of the panel and above the base of the overhang part is joined, and a cassette reinforcement is connected to the front edge of the extension part of the cassette reinforcement so as to rise above the base of the overhang part. A front suspension support structure for an automobile, characterized in that a flange portion joined to the front surface of a dash panel portion at a portion offset in the vehicle width direction from the overhang portion is bent.