JPH086685Y2 - Suspension mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a structure of a suspension attachment portion of an automobile.

[Prior Art] Generally, in a suspension attachment portion of an automobile, a suspension coil spring is supported by a spring support plate, and the spring support plate is coupled to an apron upper member. As a matter of course, it is desirable that the joint between the spring support plate and the apron upper member has high rigidity.

Here, in the related art, since the spring support plate is simply coupled only to the outside of the apron upper member having a closed cross section, it is not easy to obtain sufficient rigidity of this coupling portion. In particular, in such a conventional coupling structure, an external force transmitted from the wheel to the apron upper member via the spring support plate may act in a direction in which the spring support plate and the apron upper member are separated, Therefore, there are drawbacks such as the need to increase the plate thickness of the spring support plate.

Therefore, for the purpose of increasing the rigidity of the joint between the spring support plate and the apron upper member without increasing the plate thickness, extend the end of the spring support plate toward the apron upper member, The present applicant has already proposed a structure of the suspension attachment portion in which the extension portion is sandwiched by an apron upper member upper and an apron upper member lower to form a closed cross section. 1-17030).

With the suspension mounting structure of this configuration, the external force transmitted from the wheel to the apron upper member via the spring support plate is applied to the spring support plate sandwiched between the apron upper member upper and the apron upper member lower. It acts as a shearing force. Therefore, it is not necessary to increase the plate thickness of the spring support plate, and the rigidity of the joint between the spring support plate and the apron upper member can be increased without increasing the plate thickness. In the closed cross section formed by the apron upper member upper and the apron upper member lower, the spring support plate is located diagonally in this cross section and acts as a reinforcing member. Therefore, the cross-sectional rigidity of the apron upper member itself is also improved.

[Problems to be Solved by the Invention] However, although the structure of the suspension attachment portion can increase the rigidity of the joint portion between the spring support plate and the apron upper member, the apron upper member upper and the apron upper member can be increased. Since the extension part of the spring support plate which is sandwiched by the member lower and forms the closed cross-section part is simply a flat shape,
Of the external forces applied from the wheels to the spring support plate, it is difficult to effectively transmit the external force in the vertical direction of the vehicle to the apron upper member, and it is still insufficient in terms of improving the sectional rigidity of the apron upper member.

In consideration of the above facts, the present invention can increase the rigidity of the joint portion between the spring support plate and the apron upper member without increasing the plate thickness, and at the same time, can exert the external force applied from the wheel to the spring support plate. It is an object of the present invention to obtain a structure of a suspension attachment portion that can be transmitted to the apron upper member and can increase the cross-sectional rigidity to prevent deformation of the apron upper member.

[Means for Solving the Problems] The structure of the suspension mounting portion according to the present invention is configured such that an apron upper member member and an apron upper member member are formed in a gutter shape having a substantially U-shaped cross section and open downward. A plate-shaped apron upper member lower corresponding to the upper, and the apron upper member lower and the apron upper member lower end in the width direction are joined to each other to form a closed cross section in a vehicle front view. The structure includes an apron upper member and a suspension mounting portion in which a spring support plate for supporting a coil spring of the suspension is connected from the inside in the vehicle width direction, and the vehicle width of the apron upper member / upper is the same. The side wall on the inner side in the direction is partially cut out in a hat shape to form a cutout portion, and the apron upper member. A bent portion that bends and protrudes upward corresponding to the cutout portion is formed at the vehicle width direction inner end portion of the lower portion, and the vehicle width direction outer end portion of the spring support plate is extended in the apron upper member direction. In a side view of the vehicle, the bent portion is formed into a substantially hat shape to form an extension portion, and the extension portion of the spring support plate is sandwiched by the notch portion of the apron upper member / upper and the bent portion of the apron upper member / lower. The tip of the extension is sandwiched by the vehicle width direction outer ends of the apron upper member upper and the apron upper member lower, and the extension of the apron upper member upper and the spring support plate and the apron upper A closed cross-section structure in front view of the vehicle is constituted by the member lower and the spring support plate is formed. In the vehicle side view, both ends of the substantially hat-shaped bend forming portion of the extension of the vehicle are joined to the apron upper member lower, and the extension of the spring support plate and the apron upper member lower are used. It is characterized in that it has a closed cross-section structure.

[Operation] In the structure of the suspension attachment portion having the above-described configuration, the extension portion of the spring support plate extended toward the apron upper member is sandwiched between the apron upper member upper and the apron upper member lower, and the front surface of the vehicle. A closed cross-section portion is formed as viewed from the front, and both end portions in the vehicle front-rear direction of the substantially hat-shaped bend forming portion of the extension portion are joined to the apron upper member lower to form a closed cross-section portion when viewed from the side of the vehicle.

Therefore, the external force applied from the wheel to the spring support plate is reliably transmitted to the apron upper member upper and the apron upper member lower via the extension portion of the spring support plate. Further, in the closed cross section formed by the extension of the spring support plate, the spring support plate acts as a reinforcing member for the apron upper member upper and the apron upper member lower in this cross section. Therefore, the cross-sectional rigidity of the apron upper member is also improved.

Therefore, the rigidity of the connecting portion between the spring support plate and the apron upper member can be increased without increasing the plate thickness, and the external force can be effectively transmitted to the apron upper member to apron upper member. Can be prevented from deformation.

[Embodiment] FIG. 1 is a perspective view of a suspension mounting portion 10 according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing main components of the suspension mounting portion 10. The figure is shown. Further, FIG. 3 shows a sectional view of the suspension attachment portion 10, and FIG. 4 shows a sectional view taken along line IV-IV of FIG.

Note that in FIG. 3, the left side of the paper surface is shown as the outside of the vehicle, and in FIG. 4, the left-right direction of the paper surface is shown as the front-back direction of the vehicle.

In this suspension attachment part 10, the suspension 12
Coil spring 14 is spring support plate 16
Supported by. A lean hosement 19 is joined (for example, spot welding) to the lower side of the spring support plate 16. An end portion of the lean hosement 19 on the vehicle outer side is formed in a wavy shape to form a wavy tip portion 19A.

The end of the spring support plate 16 joined to the lean hosement 19 on the outside of the vehicle is
The wavy tip portion 19A of 19 further extends to the outside of the vehicle to form an extension portion 20. As shown in detail in FIGS. 2 and 4, the extension portion 20 has both ends in the vehicle front-rear direction bent downward to form a bent portion 20A, and is formed in a substantially hat shape as a whole in a side view of the vehicle. ing. This extension 20 is connected to the apron upper member 22 together with the lean hoistment 19.

The apron upper member 22 is composed of an apron upper member upper 24 having a substantially U-shaped cross section and an apron upper member lower 26 having a substantially L-shaped cross section.

The part of the apron upper member / upper 24 that is connected to the spring support plate 16 (extension part 20) and the lean hosement 19 inside the vehicle is cut out in a substantially hat shape, and the flange part 24A is further formed. Has been formed. On the other hand, the portion of the apron upper member lower 26 that is connected to the spring support plate 16 (extension portion 20) and the lean hosement 19 inside the vehicle is a bent portion 27 that bends upward in a substantially hat shape. , Bent section 27
A flange portion 27A is formed at the upper end of the. The flange portion 27A corresponds to the flange portion 24A.

On the other hand, a flange portion 24B is formed at the vehicle outer end portion of the apron upper member / upper 24, and a flange portion 26B is formed at the vehicle outer end portion of the apron upper member / lower 26. Correspond to each other.

As shown in detail in FIG. 3, the flange portion 24A and the flange portion 27A clamp the spring support plate 16 extending toward the apron upper member 22 and the wavy tip portion 19A of the lean hosement 19 and join them by welding. Further, the tip end portion of the extension portion 20 of the spring support plate 16 is sandwiched between the flange portion 24B and the flange portion 26B, and they are joined by welding. As a result, the apron upper member upper 24, the apron upper member lower 26, and the extension portion 20 form a closed cross-section portion 28 in a vehicle front view. That is, the sandwiching joint portion 30 and the sandwiching joint portion 32 formed by the apron upper member upper 24 and the apron upper member lower 26 are diagonally opposed to each other in the closed cross-section portion 28, and the sandwiching joint portion 30 is inside the vehicle. The sandwiching coupling portion 32 is located at the upper part and is located at the lower part outside the vehicle.

In addition, as shown in detail in FIG.
Both ends of A in the vehicle front-rear direction are joined to the apron upper member lower 26, and form a closed cross-section portion 28 in a vehicle side view. That is, the extension portion 20 of the spring support plate 16 includes the sandwiching joint portion 30 and the sandwiching joint portion 32.
In the above, the apron upper member upper 24 and the apron upper member lower 26 are coupled, and the bent portion 20A is further coupled to the apron upper member lower 26.

 Next, the operation of this embodiment will be described.

The external force transmitted from the wheel to the suspension 12 (coil spring 14) is transmitted to the spring support plate 16 and the lean hosement 19, and this external force is further transmitted.
Is transmitted to the apron upper member 22 via.

In this case, suspension 12 (coil spring 14)
Since the local rigidity of the mounting portion is improved by the lean hosement 19, the external force is reliably transmitted to the apron upper member 22 without deformation of the mounting portion.

Here, in the apron upper member 22, of the external forces transmitted, the external force in the direction of arrow B in FIG.
Lean hosement 19 Healing joint 30 between apron upper member upper 24 and apron upper member lower 26
Is reliably transmitted by the shear force. Therefore, it is not necessary to increase the plate thickness of the spring support plate 16, and the coupling rigidity between the spring support plate 16 and the apron upper member 22 can be increased without increasing the plate thickness.

Of the transmitted external force, the external force in the direction of arrow A in FIG. 3 (the vertical direction of the vehicle) is the apron upper member / upper member.
24 and apron upper member lower 26 sandwiching joint 30
It is transmitted by the spring support plate 16 and the lean hosement 19 and is also transmitted by the extension portion 20 of the spring support plate 16 to the holding joint portion 32 by the apron upper member upper 24 and the apron upper member lower 26.

Here, the extension 20 of the spring support plate 16
At the pinch joint 30 and the pinch joint 32, the apron upper member upper 24 and the apron upper member lower 26
To form a closed cross-section portion 28 in a front view of the vehicle, and further, the bent portion 20A is formed into an apron upper member.
Since it is also connected to the lower 26 to form the closed cross-section portion 28 in the vehicle side view, the cross-sectional rigidity of the apron upper member 22 itself is improved and deformation of the apron upper member can be prevented.
Also, since the external force from the spring support plate 16 is reliably transmitted to the apron upper member upper 24 and the apron upper member lower 26, it is not necessary to increase the thickness of the extension portion 20 of the spring support plate 16. The weight and cost can be reduced.

[Advantage of the Invention] As described above, in the structure of the suspension mounting portion according to the present invention, the rigidity of the coupling portion between the spring support plate and the apron upper member can be increased without increasing the plate thickness. At the same time, the external force applied from the wheel to the spring support plate can be effectively transmitted to the apron upper member and the cross-sectional rigidity can be increased to prevent the deformation of the apron upper member.

[Brief description of drawings]

FIG. 1 is a perspective view of a suspension mounting portion according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of main parts of the suspension mounting portion, and FIG. 3 is a sectional view of the suspension mounting portion. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 10 ... Suspension mounting part, 16 ... Spring support plate, 20 ... Extension part, 20A ... Bend part, 22 ... Apron-upper member, 24 ... Apron-upper member / upper, 26 ... Apron-at Pamember Roar, 28 ... Closed section.

Claims (1)

[Scope of utility model registration request] 1. An apron upper member member upper formed in a trough shape having a substantially U-shaped cross section which is open downward, and a plate-shaped apron upper member member lower corresponding to the apron upper member member upper. The apron upper member and the apron upper member lower are joined at their both widthwise end portions to each other to form a closed cross-sectional structure in a vehicle front view. A spring support plate for a suspension mounting portion that is joined from the inside in the vehicle width direction, wherein the side wall of the apron upper member / upper in the vehicle width direction is partially cut out in a hat shape. And a bending projection upward at the vehicle width direction inner end of the apron upper member lower corresponding to the notch. Forming a bent portion that extends out, extending an outer end portion of the spring support plate in the vehicle width direction toward the apron upper member, and bending the end portion in a substantially hat shape in a vehicle side view to form an extension portion; The extension portion of the plate is sandwiched between the notch portion of the apron upper member / upper and the bent portion of the apron upper member lower, and the tip of the extension portion is apron upper member / upper and apron upper member.・ Apron upper member sandwiched by the vehicle width direction outer end of the lower, the extension of the upper and spring support plates, and the apron upper member ・
And a lower cross-sectional structure as viewed from the front of the vehicle, and both ends of the substantially hat-shaped bend forming part of the extension of the spring support plate in the vehicle front-rear direction are joined to the apron upper member lower. The suspension attachment structure is characterized in that a closed cross-section structure is formed in a vehicle side view by an extension part of a spring support plate and an apron upper member lower.