JP2014144673A - Rear suspension tower perimeter structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve NV (noise and vibration) performance and operation stability performance by suppressing bending deformation of a vehicular upper part of a rear suspension tower of a vehicular side part.SOLUTION: A rear suspension tower perimeter structure includes an outer panel which is provided on the vehicle interior outside of a vehicular side part 14 and which is elongated in an upward direction of a vehicle from a rear wheel house 16, and an inner panel 12 which is provided on the vehicle interior inside of the vehicular side part 14, which is elongated in the upward direction of the vehicle from an installation portion of a rear suspension tower 18 in the rear wheel house 16, the cross-sectional shape of which is formed to protrude the vehicle interior inside and which configures a closed cross section together with the outer panel.

Description

  The present invention relates to a structure around a rear suspension tower.

  In order to suppress deformation of the rear suspension tower, a structure in which the rear suspension tower is reinforced by a wheel house inner panel is disclosed (see Patent Document 1). Further, a structure is disclosed in which the first brace and the second brace and the rear wheel house constitute a closed cross section, and the roof side rail and the outer surface side reinforcing material constitute a closed cross section to reinforce the rear suspension tower. (See Patent Document 2).

Japanese Unexamined Patent Publication No. 2000-255542 JP 2012-6507 A

  However, in the conventional example described above, the connecting portion between the vehicle side portion (wheel house outer panel, wheel house inner panel, roof side outer panel, etc.) and the upper end portion of the rear suspension tower peripheral member It has become. For this reason, it is considered that bending deformation around the vehicle longitudinal axis is likely to occur at the coupling portion.

  An object of the present invention is to improve NV (noise, vibration) performance and steering stability performance by suppressing the bending deformation of the vehicle upper portion of the rear suspension tower on the side of the vehicle in consideration of the above facts.

  According to a first aspect of the present invention, there is provided an outer panel provided on the vehicle side of the vehicle side and extending from the rear wheel house to the vehicle upper side, and provided on the vehicle side of the vehicle side and the rear suspension in the rear wheel house. And an inner panel that extends upward from the installation site of the tower, has a cross-sectional shape projecting toward the vehicle interior side, and forms a closed cross-section with the outer panel.

  In the peripheral structure of the rear suspension tower according to claim 1, the inner panel has a cross-sectional shape that protrudes toward the vehicle interior, and the inner panel and the outer panel form a closed cross section. The change in the cross-sectional secondary moment is suppressed at the site. Therefore, bending deformation of the vehicle upper portion of the rear suspension tower at the side of the vehicle due to input from the rear suspension tower is suppressed. For this reason, NV (noise, vibration) performance and steering stability performance can be improved.

  According to a second aspect of the present invention, in the rear suspension tower peripheral structure according to the first aspect, the inner panel includes a wheel house inner gusset that extends upward from the installation site of the rear suspension tower and a roof side rail. A roof side inner panel extending below the vehicle is combined.

  In the peripheral structure of the rear suspension tower according to the second aspect, the cross-sectional shapes of the wheel house inner gusset and the roof side inner panel constituting the inner panel are respectively formed convexly toward the vehicle interior side. For this reason, the change of a cross-sectional secondary moment is suppressed in the site | part from a wheel house inner gusset to a roof side inner panel.

  According to a third aspect of the present invention, in the peripheral structure of the rear suspension tower according to the second aspect, the upper end of the wheel house inner gusset and the lower end of the roof side inner panel are coupled to each other by laser welding in a state where they overlap each other. Yes.

  In the rear suspension tower peripheral structure according to the third aspect, it is possible to improve the coupling rigidity between the upper end of the wheel house inner gusset and the lower end of the roof side inner panel.

  As described above, according to the peripheral structure of the rear suspension tower according to the first aspect, the bending deformation of the vehicle upper portion of the rear suspension tower on the side of the vehicle is suppressed, so that the NV (noise, vibration) performance and the steering stability are suppressed. An excellent effect that the performance can be improved is obtained.

  According to the peripheral structure of the rear suspension tower according to the second aspect, it is possible to obtain an excellent effect that the change in the secondary moment of the cross section is suppressed in the portion from the wheel house inner gusset to the roof side inner panel.

  According to the peripheral structure of the rear suspension tower according to the third aspect, it is possible to obtain an excellent effect that the coupling rigidity between the upper end of the wheel house inner gusset and the lower end of the roof side inner panel can be improved.

It is a perspective view which shows the rear suspension tower periphery structure seen from the vehicle interior side. It is a disassembled perspective view which shows a rear suspension tower periphery structure. FIG. 3 is an enlarged cross-sectional view taken along arrow 3-3 in FIG. 1 showing a structure around the rear suspension tower. FIG. 4 is an enlarged cross-sectional view taken along the 4-4 arrow in FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. 1 to 3, the rear suspension tower peripheral structure S according to the present embodiment includes an outer panel 10 and an inner panel 12.

  In FIG. 2, the outer panel 10 is provided outside the passenger compartment of the vehicle side portion 14 (FIG. 1) and extends upward from the rear wheel house 16 to the vehicle. The outer panel 10 is formed in a substantially cross-sectional hat shape that protrudes outward from the passenger compartment.

  The rear wheel house 16 is formed by, for example, flange-joining a rear wheel house outer panel 26 positioned on the outer side in the vehicle width direction and a rear wheel house inner panel 28 positioned on the inner side in the vehicle width direction. The flange 26F of the rear wheel house outer panel 26 extends to the vehicle upper side than the flange 28F of the rear wheel house inner panel 28. The flange 10F of the outer panel 10 is coupled to the rear wheel house outer panel 26 and also to the flange 26F. An upper end 10 </ b> U of the outer panel 10 is coupled to the roof side rail 22.

  The inner panel 12 is provided on the vehicle interior side of the vehicle side portion 14 and extends upward from the installation site of the rear suspension tower 18 in the rear wheel house 16. The rear suspension tower 18 is a pedestal-like part connected to the surface of the rear wheel house inner panel 28 on the vehicle interior side, and an upper end portion of a rear suspension (not shown) is mounted thereon.

  The cross-sectional shape of the inner panel 12 is convexly formed on the vehicle interior side, and has a substantially cross-sectional hat shape, for example. As shown in FIG. 4, the inner panel 12 forms a closed section with the outer panel 10. Specifically, the inner panel 12 includes a wheel house inner gusset 20 that extends upward from the installation site of the rear suspension tower 18 and a roof side inner panel 24 that extends downward from the roof side rail 22 to the vehicle. It is composed by combining. The wheel house inner gusset 20 and the roof side inner panel 24 each have a substantially cross-sectional hat shape. The wheel house inner Naga set 20 is formed with a tool hole 20 </ b> B for passing a tool toward the rear suspension tower 18. The lower part of the flange 20F in the wheel house inner gusset 20 is coupled to the rear wheel house inner panel 28.

  The upper end 20U of the wheel house inner gusset 20 and the lower end 24L of the roof side inner panel 24 are joined to each other, for example, by laser welding in a state where they overlap each other. In the example shown in FIGS. 1, 3, and 4, the upper end 20 </ b> U of the wheel house inner gusset 20 is overlaid on the lower end 24 </ b> L of the roof side inner panel 24, and the convex top portions 20 </ b> A and 24 </ b> A are overlaid. It has been. The convex top portions 20A and 24A are joined to each other by laser welding (see the welding point 30 in FIGS. 1 and 4). The number of welding points 30 is, for example, three, but the number of welding points 30 is not limited to this. Further, the convex top portions 20A and 24A are not limited to flat surfaces, and may be curved surfaces.

  The convex top portion 20A of the wheel house inner gusset 20 is a portion located on the vehicle interior side with respect to the flange 20F provided on both sides in the vehicle front-rear direction, and is configured wider than the flange 20F. Similarly, the convex top portion 20A of the roof side inner panel 24 is a portion located on the vehicle interior side with respect to the flanges 24F provided on both sides in the vehicle front-rear direction, and is configured wider than the flanges 24F.

  As shown in FIG. 3, the flange 24 </ b> F of the roof side inner panel 24 is coupled to the flange 10 </ b> F of the outer panel 10. Further, the flange 20F of the wheel house inner gusset 20 is coupled to the flange 24F of the roof side inner panel 24 at an upper portion thereof. Further, the flange 20F of the wheel house inner gusset 20 is coupled to the flange 10F of the outer panel 10 at a lower portion thereof. As shown in FIGS. 3 and 4, a flange 26F of the rear wheel house outer panel 26 is sandwiched between the flanges 10F and 20F. In this manner, another member may be sandwiched between the wheel house inner Naga set 20 (inner panel 12) and the outer panel 10.

  Note that the method of overlapping the roof side inner panel 24 and the wheel house inner gas set 20 may be reversed from the above method. Specifically, the upper end 20U of the lower end 24L of the roof side inner panel 24 may be overlaid on the wheel house inner Naga set 20.

  As shown in FIG. 3, the vehicle interior side of the rear suspension tower 18 and the floor panel 34 are reinforced by an L-shaped reinforcing member 32 when the vehicle is viewed from the front. A side member 36 is coupled to the lower surface of the floor panel 34.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. 1, 3, and 4, in the rear suspension tower peripheral structure S according to the present embodiment, the cross-sectional shape of the inner panel 12 is convexly formed on the vehicle interior side, and the inner panel 12 and the outer panel 10 are closed cross-sections. Is configured. And the cross-sectional shape of the wheel house inner gas set 20 and the roof side inner panel 24 which comprises the inner panel 12 is each formed in the convex by the vehicle interior side. For this reason, the change of the cross-sectional secondary moment is suppressed at the portion from the wheel house inner set 20 to the roof side inner panel 24, that is, at the vehicle upper portion of the rear suspension tower 18. Therefore, bending deformation of the vehicle upper portion of the rear suspension tower 18 at the vehicle side portion 14 due to input from the rear suspension tower 18 is suppressed. For this reason, NV (noise, vibration) performance and steering stability performance can be improved.

  Further, since the upper end 20U of the wheel house inner gas set 20 and the lower end 24L of the roof side inner panel 24 are laser welded in a state of being overlapped with each other, the coupling rigidity between the upper end 20U and the lower end 24L can be improved. .

[Other Embodiments]
The outer panel 10 is not limited to a single panel, and may be configured to couple a plurality of panels in the vehicle vertical direction.

10 Outer Panel 12 Inner Panel 14 Vehicle Side 16 Rear Wheel House 18 Rear Suspension Tower 20 Wheel House Inner Set (Inner Panel)
20U upper end 22 roof side rail 24 roof side inner panel (inner panel)
24L Lower end S Rear suspension tower peripheral structure

Claims (3)

An outer panel provided outside the passenger compartment on the side of the vehicle and extending upward from the rear wheel house;
The vehicle is provided on the vehicle interior side of the vehicle side portion, extends from the rear suspension tower installation site in the rear wheel house to the vehicle upper side, has a cross-sectional shape that protrudes toward the vehicle interior side, and has a closed cross section with the outer panel. An inner panel to configure;
A structure around the rear suspension tower.   The inner panel is configured by combining a wheel house inner gusset that extends upward from the installation site of the rear suspension tower and a roof side inner panel that extends downward from the roof side rail to the vehicle. Item 2. The structure around the rear suspension tower according to Item 1.   The rear suspension tower peripheral structure according to claim 2, wherein an upper end of the wheel house inner gusset and a lower end of the roof side inner panel are joined to each other by laser welding in a state of being overlapped with each other.

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