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Rear suspension

A technology of rear suspension and torsion beam, which is applied in the direction of suspension, elastic suspension, cantilever mounted on pivot, etc., which can solve the problems of increased weight and insufficient strength

Inactive Publication Date: 2002-05-15
MITSUBISHI MOTORS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But the normal rear suspension has some problems because the torsion beam is bent vertically, it doesn't have enough strength, to have enough strength, the torsion beam has to add weight

Method used

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  • Rear suspension
  • Rear suspension
  • Rear suspension

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Experimental program
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Embodiment Construction

[0012] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

[0013] In the rear suspension of an automobile, a pair of right and left trailing arms 1 arranged substantially along the length of the vehicle have a substantially square cross-sectional cavity structure in the width direction of the vehicle. Each trailing arm 1 comprises a front cylindrical portion 2 and a rear end portion 3, the front cylindrical portion 2 is axially supported on the vehicle body (not shown) by a bushing, a pivot extends along the width of the vehicle body; and the rear end portion 3 is passed through A frame 4 fixed thereto supports wheels (not shown). The rear suspension of the car is provided with a shock absorber (not shown) such as a coil spring attached to a flat portion 5 extending inward along the width of the vehicle.

[0014] At the bend 6 in the middle region between the front cylindrical part 2 and the rear part 3, each tra...

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PUM

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Abstract

In a vehicle rear suspension, each of right and left trailing arms (1) which having a L-shaped shape is bent upward at a bent part in an intermediate area between a front end cylindrical portion (2) and a rear end portion (3) so that the trailing arms (1) can be bent. Each end of a torsion beam (7), having a substantially U-shaped cross-section, is connected to an upward inclining area of each trailing arm (1) inclining from the rear end portion (3) toward the bending part (6). This makes it possible to arrange the torsion center of the torsion beam (7) having the substantially U-shaped section in a relatively high position and to maintain the strength of the torsion beam (7) at a high level.

Description

[0001] Field [0002] The present invention relates generally to rear suspensions, and more particularly to rear suspensions whose right and left trailing arms are interconnected through a torsion beam extending substantially the width of the vehicle. Background technique [0003] As disclosed in Japanese Patent Laid-Open Publication No. 8-324218, a common automobile rear suspension has a torsion beam extending substantially along the width of the vehicle so as to be connected with a pair of right and left trailing arms, for example the torsion beam has a An open U-shaped section and a curved section that curves upwards in the center section. In the curved portion, the radius of curvature is increased from the center to both ends so that the two ends are aligned. This prevents the rear suspension from interfering with the drive shaft and increases the rigidity of the torsion beam because the bend is made in the center of the torsion beam, where relatively small bending moment...

Claims

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Application Information

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IPC IPC(8): B60G9/04B60G3/20B60G7/00B60G21/05
CPCB60G2200/21B60G2206/20B60G21/051B60G2206/30B60G7/001B60G2204/1246B60G3/20
Inventor 山口丘
Owner MITSUBISHI MOTORS CORP