JP3077412B2 - Car suspension - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile suspension.

[0002]

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

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

[0004]

In the conventional suspension arm 30, since the section modulus changes discontinuously and stepwise by the reinforcing member 34 provided inside, the stress generated inside becomes uneven. Thus, it was not satisfactory in improving the strength.

[0005] The present invention has been made in view of the above circumstances, and has as its object to provide an automobile suspension capable of easily equalizing the stress generated therein.

In the present invention, in order to achieve the above object,
Forming an arm body having a substantially inverted U-shaped cross section;
Suspension for automobiles with arm pins welded and fixed inside
The arm pin section from its center
While gradually reducing the thickness of the arm pin
Forming a closed section by extending the part inside the arm body
And an arm reinforcing member is welded and fixed below the arm body.
Then, the base of the arm pin portion is connected to the arm reinforcing member.
Arm offset slightly above one end
It is configured to overlap with one end of the strong member .

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a vehicle suspension according to the present invention.

FIG. 1 to FIG. 13 show an embodiment of the present invention. The vehicle suspension 1 according to the present embodiment includes:
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 shown in detail in FIG. 2, the arm body 4, the arm reinforcing member 5, the arm pin portion 6 and the like are configured.

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

The arm reinforcing member 5 has a generally U-shaped cross section and is welded and fixed below the arm main body 4, and as shown in FIG. A cross section is formed.

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 a tip portion 6a serving as an axis. From the center portion 6b to the base portion 6c, the thickness is gradually reduced by rolling, and a groove 10 opening downward is formed. .

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

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

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

As a result, in the present embodiment, a larger section modulus can be obtained in the suspension arm 2 on the arm pin portion 6 side, and the lower plate conventionally used becomes unnecessary. Thus, the portion on the arm pin portion 6 side can be constituted by two members.

The suspension arm 2 of the present embodiment
Since the arm reinforcing member 5 and the arm pin portion 6 can be welded to the arm main 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 6c of the arm pin portion 6 overlaps with one end 5a of the arm reinforcing member 5 while being fixed to the arm body 4.

Notches 11 and 12 are provided in the base 6c of the arm pin 6 and the one end 5a of the arm reinforcing member 5 to reduce the rigidity of these portions.

Due to the presence of these notches 11 and 12, the change in rigidity in 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
It is configured to have a standing wall portion 3a having a substantially L-shaped cross section for attaching the stabilizer bar joint 4, a bottom surface portion 3b for sealing a bottom surface side of a space in the stabilizer bracket, and the like.

The upright wall 3 of the stabilizer bar bracket 3
a is provided with a hole 3c,
A drain hole 3d is formed in b.

Such a stabilizer bar bracket 3
As shown in FIG. 2, an end 13a of the stabilizer bar 13 is
Attached via 4.

In this embodiment, since the bottom portion 3b of the stabilizer bar bracket 3 prevents stepping stones and the like from entering the stabilizer bar bracket from below, the stabilizer bar joint 14 is formed by these stepping stones and 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 a wheel.

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

[0030]

According to the vehicle suspension of the present invention, the arm body is formed to have a substantially inverted U-shaped cross section.
Of an automobile with an arm pin welded and fixed inside the
In the suspension, place the arm pin at the center
While gradually reducing the thickness from the part to the base,
Closed section by extending the base of the
And an arm reinforcing member is welded below the arm body.
Fix and fix the base of the arm pin section with the arm reinforcement
Slightly offset above one end of the member
Configuration that overlaps one end of the
Therefore, the following effects can be obtained.

That is, in the present invention, the base of the arm pin portion is
The part is extended into the arm body while gradually reducing the wall thickness and closed
The surface of the suspension arm
The part on the mupin portion side can be constituted by two members. This
As a result, the number of parts can be reduced and the assemblability can be improved.
And reduce manufacturing costs.
it can. Also, in the present invention, the base of the arm pin portion is moved upward.
Offset to one end of the arm reinforcement
-The overlapping configuration
The section modulus at the
You. Therefore, the internal stress of the suspension arm
Of the suspension and the suspension
The durability of the arm can be improved.

[Brief description of the 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 one embodiment of a vehicle suspension according to the present invention.

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

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

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

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

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

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

FIG. 9 is a sectional view taken along line AA in FIG. 4;

FIG. 10 is a sectional view taken along line BB in FIG. 4;

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

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

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

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

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspension 2 Suspension arm 3 Stabilizer bar bracket 3a Standing wall part 3b Bottom part 4 Arm body 5 Arm reinforcement member 5a One end part 6 Arm pin part 6a Tip part 6b Central part 6c Base part 13 Stabilizer bar 13a End part 14 Stabilizer bar joint

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-213508 (JP, A) JP-A-2-262407 (JP, A) JP-A-61-202016 (JP, A) JP-A-2- 106417 (JP, A) Japanese Utility Model Hei 3-25307 (JP, U) Japanese Utility Model Application Showa 59-89707 (JP, U) Japanese Utility Model Utility Model 62-115206 (JP, U) Japanese Utility Model Utility Model 61-176007 (JP, U) Japanese Utility Model Application Hei 5-35405 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60G 7/00

Claims (1)

(57) [Claims] An arm body is formed in a substantially inverted U-shaped cross section.
And an arm pin portion is welded and fixed in the arm body.
In an automobile suspension, gradually move the arm pin from the center to the base.
While reducing the thickness, attach the base of the arm pin to the arm
Forming a closed cross section by extending into the body, the arm body
The arm reinforcement is welded and fixed under the arm pin.
The base of the part over one end of the arm reinforcing member.
With one end of the arm reinforcing member
-Automotive suspensions characterized by burlap
Option.