JPS6338082Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a trailing arm type suspension for an automobile.

A trailing arm type suspension has a trailing arm with a pair of eyes arranged on the inside and outside at intervals in the width direction of the car body, which are pivoted to the car body.
The wheels are supported by trailing arms, and bushings are attached to the eyes to prevent wheel vibrations from being transmitted to the vehicle body. When this trailing arm type suspension is used particularly as a rear suspension, when braking force is applied to the wheels, the wheels deflect toward the toe-out side due to deformation of the bushings. Therefore, when the vehicle is braked while turning, the wheels are likely to roll into the inside of the turn, a so-called tuck-in.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a trailing arm type suspension that can reduce the tendency of the wheels to deflect toward toe-out even when the wheels are subjected to braking force.

By the way, during braking, a braking torque that swings the eye downward around the wheel is applied to the trailing arm, so that the bushing of the eye generates an upward reaction force. The present invention utilizes the downward force acting on the eyes to achieve the above object.The present invention utilizes a pair of eyes disposed inside and outside at intervals in the width direction of the car body, and a pair of eyes that are pivoted to the car body. a trailing arm having an eye, a bush attached to the inner eye, the bush located above an imaginary horizontal plane including its axis and in front of an imaginary vertical plane including the axis; and a bush below and below the imaginary horizontal plane. a bush having a gooseberry located behind the virtual vertical plane; and a bush attached to the outer eye, the bush being located below the virtual horizontal plane including its axis and in front of the virtual vertical plane including the axis. A bush having currants and currants located above the virtual horizontal plane and behind the virtual vertical plane.

When the wheel receives a braking force and this braking torque generates a reaction force on the bushing, this reaction force causes the inner eye to move backward and downward, and the outer eye to move forward and downward, causing the wheel to move. Reduces the tendency to toe out.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the trailing arm type suspension 10 supports wheels 14 by a trailing arm 12. Trailing arm 1
Reference numeral 2 denotes a pair of eyes 1 disposed at the front end thereof at intervals in the width direction of the vehicle body (not shown).
6,18. Depending on whether the trailing arm 12 is a full trailing arm or a semi-trailing arm, the eyes 16 and 18 may be arranged so that their axes are perpendicular to the center line extending in the front-rear direction of the vehicle body, or they may be arranged so that their axes are perpendicular to the center line extending in the longitudinal direction of the vehicle body. The axes may be arranged diagonally across each other. In this specification, when the pair of eyes are spaced apart in the width direction of the vehicle body, it is intended to include both arrangements.

The trailing arm 12 is pivotally attached to a cross beam 22 extending in the width direction of the vehicle body by a pin 20 passing through the eyes 16 and 18, and is swingable. One trailing arm 12 is installed on each of the two sides in the width direction of the vehicle body (the trailing arm 12 shown in FIG. 1 is installed on the left side as viewed in the direction of travel of the vehicle. The one shown in Figure 2 is installed on the right side.) The eyes 16, 18 of each side trailing arm 12 are fitted with bushings of the form described below. Trailing arm 12
A coil spring 24 and a shock absorber 26 are installed between the trailing arm 1 and the vehicle body.
Dampens the vibrations applied to 2.

A rubber bushing 28 shown in FIG. 3 is attached to the inner eye 16. This bush 28 has a pair of currants 30,32. The gooseberry 30 is attached to the bush 2 when the bush 28 is attached to the eye 16.
Above the virtual horizontal plane H including the axis O of 8 and the axis O
is located in front of a virtual vertical plane V that includes On the other hand, the gooseberries 32 are below the virtual horizontal plane H and the virtual vertical plane V.
located behind.

A rubber bushing 34 shown in FIG. 4 is attached to the outer eye 18. This bush 34 has a pair of currants 36,38. The gooseberry 36 is attached to the bush 3 when the bush 34 is attached to the eye 18.
Below the virtual horizontal plane H including the axis O of 4 and the axis O
is located in front of a virtual vertical plane V that includes On the other hand, the gooseberries 38 are located above the virtual horizontal plane H and above the virtual vertical plane V.
located behind.

A bush 28 is attached to the eye 16, and a bush 34 is attached to the eye 18 so as to have the above-mentioned positional relationship, and the eyes 16 and 18 are pivotally attached to the cross beam 22 by means of pins 20 passing through each bush. When the car is braked while the car is running, the braking torque acting on the trailing arm 12 causes the eye 1 to
6 and 18, a downward force R is applied as shown in FIGS. 3 and 4. This force R causes the eye 16 to be displaced in the direction of arrow A, that is, backward and downward, and the eye 18 to be displaced in the direction of arrow B, that is, forward and downward. In this case, since a pair of currants are provided in the bush of each eye in the direction in which the eyes are displaced, the bush is easily deformed, and by changing the size of the currants, the degree of displacement of the eyes can be adjusted.

As a result of the displacement of eyes 16, 18, trailing arm 12 is deflected by e toward toe-in, as shown in phantom in FIG. In reality, since a rearward braking force is acting on the trailing arm 12, the amount of deflection toward the toe-in side is smaller than e, and in some cases, the trailing arm 12 may not be toe-in. Although it is possible, the conventional tendency of toe-out due to braking force is still alleviated.

According to the present invention, the bush reaction force generated by the braking torque causes the inner eye to move backward and downward.
Furthermore, since the outer eyes are respectively displaced forward and downward, even when the trailing arm type suspension is used as a rear suspension, deflection of the wheels toward the toe-out side during braking can be alleviated. As a result, even if the vehicle is braked while turning, the occurrence of the tuck-in phenomenon in which the wheels are rolled into the inside of the turn can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the trailing arm type suspension according to the present invention, Fig. 2 is a plan view schematically showing the trailing arm, and the state during braking is shown with imaginary lines, and Fig. 3 is a perspective view of the trailing arm type suspension according to the present invention. 2 is a front view of the bush attached to the eye 16, and FIG. 4 is a rear view of the bush attached to the eye 18 of FIG. 10; Trailing arm type suspension,
12; Trailing arm, 16, 18; Eye,
28, 34; Butsuyu, 30, 32, 36, 3
8; Currant.

Claims (1)

[Scope of utility model registration request] a trailing arm having a pair of eyes disposed inwardly and outwardly at intervals in the width direction of the vehicle body and pivoted to the vehicle body; and a bushing attached to the inner eyes. a bush having currants located above a virtual horizontal plane including the axis thereof and in front of a virtual vertical plane including the axis; and currants located below the virtual horizontal plane and behind the virtual vertical plane; A bush that is attached to an eye and has currants located below a virtual horizontal plane including its axis and in front of a virtual vertical plane including the axis, and currants located above the virtual horizontal plane and behind the virtual vertical plane. A trailing arm type suspension comprising a bushing.