JPH0699709A - Automotive suspension - Google Patents

Abstract

PURPOSE:To prevent generation of rust or the like, and reduce manufacturing cost. CONSTITUTION:In an automotive suspension in which a suspension arm is composed by welding an arm pin part 6 on an arm main body 4, the arm main body 4 is formed having an inversed U-letter shaped cross sectional surface as a whole, and the arm pin part 6 is welded and fixed inside the arm main body, so a closed cross sectional surface is formed of the arm main body 4 and the arm pin part 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle suspension, and more particularly to a vehicle suspension in which an arm pin is welded to an arm body to form a suspension arm.

[0002]

14 to 16 show a suspension arm 30 of a conventional vehicle front suspension. In this suspension arm 30, the structure on the side of the arm pin portion 31 includes an arm body upper plate 32,
The arm body lower plate 33 and the arm pin portion 31 are welded to each other.

15 and 16 are sectional views of the suspension arm 30 taken along the lines CC and DD in FIG. 14, respectively.

[0004]

By the way, in the conventional suspension arm 30, since the arm body upper plate 32 and the arm body lower plate 33, which are substantially U-shaped, are joined back to back, a large cross section is provided. It was difficult to get the coefficient.

Further, since the upper plate 32 of the arm body having a substantially U-shape forms the concave portion 34 that opens upward, muddy water or the like is likely to accumulate in the concave portion 34, which also causes rust.

Further, the conventional suspension arm 30
Since the structure on the side of the arm pin portion 31 is configured by the three members of the arm body upper plate 32, the arm body lower plate 33, and the arm pin portion 31, the number of parts is large and the weight is large. However, since the number of welding processes increases, the assemblability is poor and the manufacturing cost is increased.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automobile suspension capable of preventing the generation of rust and the like and reducing the manufacturing cost. .

In the present invention, in order to achieve the above object,
In a vehicle suspension in which an arm pin portion is welded to an arm body to form a suspension arm, the arm body is formed into a generally inverted U-shaped cross section, and the arm pin portion is welded and fixed in the arm body. ,
A closed cross section is formed by the arm body and the arm pin portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle suspension according to the present invention will be described in detail below with reference to the accompanying drawings.

1 to 13 show an embodiment of the present invention. The vehicle suspension 1 of this embodiment is
It is a strut-type front suspension.

A stabilizer bar bracket 3 is welded and fixed to a suspension arm 2 of the suspension 1.

The suspension arm 2 is shown in FIGS.
As will be described in detail, the arm main body 4, the arm reinforcing member 5, the arm pin portion 6 and the like are included.

The arm body 4 is formed in a generally inverted U-shape in cross section, and one end portion 4a thereof is an arm pin portion 6.
And has an arm boss 7 at its central base 4b,
The tip portion 4c has a ball joint reinforcing member 8.

The arm reinforcing member 5 is formed in a generally U-shaped cross section as a whole and is welded and fixed to the lower portion of the arm body 4, and as shown in FIG. Forming a cross section.

Further, a groove 9 having a semicircular cross section for reinforcement is formed in the arm reinforcing member 5 so as to be curved upward in FIG.

The arm pin portion 6 has its tip portion 6a as an axis, and the thickness thereof is gradually reduced by rolling from the center portion 6b to the base portion 6c, and a groove 10 opening downward is formed. .

As a result, in the arm pin portion 6, the portion extending from the central portion 6b to the base portion 6c gradually changes into an inverted U-shaped cross section.

As shown in FIG. 10, the arm pin portion 6 is bent so that its central portion 6b is located slightly below the tip portion 6a and the base portion 6c thereof.

As a result, the tip 6a of the arm pin 6 is formed.
The base portion 6c is located at the center of the cross section of the arm body 4 and is welded and fixed, and the center portion 6b is offset downward from the center portion of the cross section of the arm body 4 and is welded and fixed.

As a result, in this embodiment, a larger section modulus can be obtained in the portion of the suspension arm 2 on the arm pin 6 side, and the lower plate conventionally used is no longer necessary. It has become possible to form the arm pin portion 6 side portion by two members.

Further, the suspension arm 2 of this embodiment
Since the arm reinforcing member 5 and the arm pin portion 6 can be welded to the arm body 4 from the same direction, the welding operation can be performed easily and quickly.

Further, as shown in FIGS. 4 and 5, the base portion 6c of the arm pin portion 6 is fixed to the arm body 4 and overlaps one end portion 5a of the arm reinforcing member 5.

The base portion 6c of the arm pin portion 6 and the one end portion 5a of the arm reinforcing member 5 are provided with notches 11 and 12 in order to reduce the rigidity of those portions.

Due to the presence of these notches 11 and 12, the change in rigidity at the overlapping portion between the arm pin portion 6 and the arm reinforcing member 5 becomes smooth.

As a result, the internal stress of the suspension arm 2 can be made uniform, and the durability of the suspension arm can be improved.

Further, the stabilizer bar bracket 3 is
It is configured to have a standing wall portion 3a having a substantially L-shaped cross section to which the stabilizer bar joint 4 is attached, a bottom surface portion 3b for sealing the bottom surface side of the space in the stabilizer bracket, and the like.

The standing wall portion 3 of the stabilizer bar bracket 3
A is provided with a hole 3c, and the bottom surface portion 3
A hole 3d for draining water is formed in b.

Such a stabilizer bar bracket 3
As shown in FIG. 2, an end portion 13a of the stabilizer bar 13 is attached to the standing wall portion 3a of the stabilizer bar joint 1
It is attached through 4.

In this embodiment, since the bottom surface 3b of the stabilizer bar bracket 3 prevents flying stones or the like from entering the stabilizer bar bracket from below, the stabilizer bar joint 14 is formed by these flying stones or the like. Damage can be sufficiently prevented.

In FIG. 1, 15 is a strut,
16 is a steering knuckle, 17 is a ball stud,
18 is a wheel bearing, 19 is a wheel hub, 20
Is the wheel.

In this embodiment, the present invention is applied to the front suspension, but the present invention is not limited to this and may be applied to the rear suspension.

[0032]

According to the vehicle suspension of the present invention, in the vehicle suspension in which the arm pin portion is welded to the arm body to form the suspension arm, the arm body is formed into a generally inverted U-shaped cross section. Then, the arm pin portion is welded and fixed in the arm body,
Therefore, since the closed cross section is formed by the arm body and the arm pin portion, it is possible to prevent muddy water and the like from accumulating on the upper plate of the arm body and to prevent rust.

Further, since the closed cross section is formed by the arm body and the arm pin portion, a sufficient section modulus can be obtained, so that the arm body lower plate which has been conventionally used can be omitted. The structure of the suspension 30 on the side of the arm pin can be configured by two members, the arm body and the arm pin, and therefore the number of parts is reduced, the assemblability is improved, and the manufacturing cost is reduced. Can be planned.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a vehicle suspension according to the present invention.

FIG. 2 is a perspective view showing an embodiment of an automobile suspension according to the present invention.

FIG. 3 is a plan view showing an embodiment of an automobile suspension according to the present invention.

FIG. 4 is a plan view showing a suspension arm of an embodiment of an automobile suspension according to the present invention.

FIG. 5 is a front view showing a suspension arm of an embodiment of an automobile suspension according to the present invention.

FIG. 6 is a right side view showing a suspension arm of an embodiment of a vehicle suspension according to the present invention.

FIG. 7 is a left side view showing a suspension arm of an embodiment of a vehicle suspension according to the present invention.

FIG. 8 is a rear view showing a suspension arm of an embodiment of a vehicle suspension according to the present invention.

9 is a cross-sectional view taken along the line AA in FIG.

10 is a cross-sectional view taken along the line BB in FIG.

FIG. 11 is a plan view showing a stabilizer bar bracket of an embodiment of an automobile suspension according to the present invention.

FIG. 12 is a front view showing a stabilizer bar bracket of an embodiment of an automobile suspension according to the present invention.

FIG. 13 is a right side view showing a stabilizer bar bracket of an embodiment of an automobile suspension according to the present invention.

FIG. 14 is a plan view showing a suspension arm of a conventional automobile suspension.

15 is a cross-sectional view taken along the line CC in FIG.

16 is a cross-sectional view taken along line DD in FIG.

[Explanation of symbols]

 1 Suspension 2 Suspension Arm 3 Stabilizer Bar Bracket 3a Standing Wall 3b Bottom Part 4 Arm Main Body 5 Arm Reinforcing Member 6 Arm Pin 13 Stabilizer Bar 13a End 14 Stabilizer Bar Joint

Claims (1)

[Claims] 1. In a vehicle suspension in which an arm pin portion is welded to an arm body to form a suspension arm, the arm body is generally formed in a substantially inverted U-shaped cross section, and the arm pin portion is formed in the arm body. An automobile suspension characterized in that a closed cross section is formed by welding and fixing the arm body and the arm pin portion.