JPH07164846A - Linking part structure of rear suspension - Google Patents

Abstract

PURPOSE:To make improvements in quality assessment and reliability in heightening the extent of link supporting rigidity. CONSTITUTION:In this linking part structure, a recess 14 is formed in a part where an outrigger 12 of a bracket 10 being situated at the outside, either of paired brackets 10 joined to a rear side member 2 connected to the underside of a rear floor panel 1, is joined together, and in this constitution, the outrigger 12 is joined to the circumferential side wall 14a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear suspension link mounting structure.

[0002]

2. Description of the Related Art FIGS. 3 to 5 show a conventional link mounting structure of a rear suspension, wherein 1 is a rear floor panel and 2 is a rear side member having an inverted hat cross-section joined to the lower surface of both sides of the rear floor panel 1. The front side is widened to the side sill 3 side of the floor side, and its end edge is abutted against the sill inner 3a and joined.

Reference numeral 4 denotes a link whose rear end is fixed to both end portions of the axle beam 5, and which has an inner cylinder 7 and an outer cylinder 8 and an elastic body 9 provided between the inner cylinder 7 and the outer cylinder 8 at the front end. The vibration-proof bush 6 is fixed.

Brackets 10 and 10 are jointed and arranged at a predetermined distance between the side wall and the bottom wall of the rear side member 2 on the floor center side, and the vibration-proof bush 6 at the front end of the link 4 is fitted to the brackets 10 and 10. The shaft 11 is pivotally supported between them.

On the bottom wall of the rear side member 2, a rear wedge-shaped outrigger 12 extends over the bracket 10 located outside and the sill inner 3a of the side sill 3.
Are joined together so that the suspension input acting on the bracket 10 can be transmitted to the side sill 3. 1
Reference numeral 3 indicates a rear strut.

This similar structure is, for example, in Japanese Utility Model Laid-Open No. 62-84.
It is disclosed in Japanese Patent No. 586.

[0007]

Brackets 10, 10
In addition to the vertical input from the link 4, a torsional force acts on the bracket 10. Since the outriggers 12 are joined to the bracket 10 located outside and the side sill 3 as described above, the bracket 10 is caused by the torsional force. The load acting on the vehicle in the vehicle width direction is transmitted to the side sill 3 via the outrigger 12.

However, when the load in the vehicle width direction is directed outward, the load acts on the side sill 3 because it acts in a direction of pressing the outrigger 12, but the load in the vehicle width direction is applied inward. When heading to (center side of the floor),
It is undeniable that a load acts on the butt joint between the bracket 10 and the outrigger 12 located on the outer side in the peeling direction, which is disadvantageous in terms of strength, resulting in a decrease in strength and rigidity.

Therefore, the present invention provides a link mounting structure for a rear suspension, which can improve the support rigidity of the link mounting part with a simple structure and can further improve the quality and reliability. is there.

[0010]

[Means for Solving the Problems] A pair of brackets are joined to a lower portion of a rear side member joined to the lower surfaces of both side portions of a rear floor panel so as to be spaced apart in the vehicle width direction, and a link of a rear suspension link is provided between these brackets. In the structure in which the end portion is pivotally supported, and the outrigger is joined to the bottom wall of the rear side member and the bracket and the side sill located outside, a recess is formed in the outrigger butting portion of the bracket located outside, Outriggers are joined to the peripheral side wall of the recess.

[0011]

[Operation] The torsional force of the link acts on the bracket as a load in the vehicle width direction, and this load in the vehicle width direction is inward (center side of the floor).
Even when heading toward the outside, since the outriggers are joined to the peripheral side wall of the concave portion of the bracket located on the outer side, the load acts on the joint portion in the shearing direction that is advantageous in terms of strength, and the load is sufficient for this vehicle width direction load. The load can be transmitted to the side sill against each other, and the support rigidity of the link can be further enhanced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings by attaching the same reference numerals to the same parts as those in the conventional structure.

1 and 2, the rear side member 2 joined to the lower surface of both sides of the rear floor panel 1 has a predetermined distance between the side wall and the bottom wall of the rear side member 2 on the floor center side.
0 and 10 are joined, and a vibration-proof bush 6 is fixed to the front end of the link 4 fixed to both end portions of the axle beam 5, and the front end of the link 4 is fixed to the bush 6 by the brackets 10 and 10. A point that is disposed between the bracket 10 and the side inner sill 3a of the side sill 3 on the bottom wall of the rear side member 2 and the sill inner 3a. The basic structure is the same as that of the conventional one, such as the fact that a rear wedge-shaped outrigger 12 is joined.

Here, the bracket 1 located on the outer side
A recess 14 is formed in the abutting portion of the outrigger 12 of 0, and the outrigger 1 is formed on the peripheral side wall 14 a of the recess 14.
The two are joined.

Therefore, according to the structure of this embodiment, the road surface input acts on the brackets 10 and 10 in the vertical direction via the vibration-proof bush 6 of the link 4, and the link 4 is twisted via the bush 6. Since the force acts, this torsional force acts on the brackets 10 as a load in the vehicle width direction.

When the load in the vehicle width direction is directed outward, it acts in the direction of pressing the outrigger 12, so that the load in the vehicle width direction is transmitted to the side sill 3 and the brackets 10, 1 are inserted.
The load on the joint between 0 and the rear side member 2 is reduced to counter the load in the vehicle width direction.

On the contrary, the load in the vehicle width direction is inward (center side of the floor)
When heading toward the vehicle, the load in the vehicle width direction tends to act in the peeling direction on the joint portion between the bracket 10 located inside and the side wall of the rear side member 2, but the bracket 10 located outside and the outrigger 12 located outside. Is the bracket 1
Since the outriggers 12 are joined to the peripheral side wall 14a of the recessed portion 14 of 0, the vehicle width direction load acts in the shearing direction, which is advantageous in terms of strength, at this joining portion.

As a result, the load in the vehicle width direction is applied to the outrigger 1.
It can be satisfactorily transmitted to the side sill 3 via 2, and in this case as well, the load on the joint between the brackets 10 and 10 and the rear side member 2 can be reduced,
As a result, the support rigidity of the link 4 can be further enhanced, and a low-grade muffled sound or the like is not generated, and the sense of quality and reliability can be enhanced.

Although not shown, if a recess is formed from the bottom edge side in the bracket joint portion of the side wall of the rear side member 2 and the bracket 10 located inside is also joined to the peripheral side wall of this recess. The joint portion between the bracket 10 and the rear side member 2 located on the inner side also receives the inward vehicle width direction load in the shearing direction, so that the support rigidity of the link 4 can be further enhanced.

[0020]

As described above, according to the present invention, of the pair of brackets provided to the rear side member, the outer bracket is joined to the outrigger, and the outrigger is formed by the peripheral side wall of the recess formed in the bracket. When joined, the vehicle width direction load acting on the bracket can be received in the shearing direction, which is advantageous in terms of strength, at the joint portion, and the vehicle width direction load can be satisfactorily transmitted to the side sill via the outrigger. You can

Therefore, it is possible to reduce the load on the joint portion between the bracket and the rear side member and increase the link support rigidity, and to further improve the sense of quality and reliability without producing low-level muffled noise. it can.

Further, the link supporting rigidity can be increased without using a special reinforcing member, which is very advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line AA of FIG. 2 showing an embodiment of the present invention.

FIG. 2 is a perspective view seen from below in FIG.

FIG. 3 is a schematic side view showing an arrangement state of links.

FIG. 4 is a cross-sectional view taken along line BB of FIG. 5 showing a conventional structure.

FIG. 5 is a perspective view seen from below in FIG. 4;

[Explanation of symbols]

 1 Rear Floor 2 Rear Side Member 3 Side Sill 4 Link 10 Bracket 12 Outrigger 14 Recess 14a Peripheral Side Wall

Claims (1)

[Claims] 1. A pair of brackets are joined to a lower side portion of a rear side member, which is joined to the lower surfaces of both side portions of a rear floor panel, so as to be spaced apart in the vehicle width direction. In a structure in which an outrigger is joined to a bottom wall of a rear side member and a bracket and a side sill located outside while supporting, a recess is formed in an outrigger abutting portion of the bracket located outside, and a peripheral side wall of the recess is formed. Rear suspension link attachment structure characterized by joining an outrigger to the rear.