JPS5851606Y2 - Automotive wheel suspension system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wheel suspension system for an automobile, and particularly to an improvement in the support structure of a suspension spring in a trailing arm type wheel suspension system.

As shown in FIG. 1, a wheel 2 is attached to the tip of a trailing arm 1 whose base end is rotatably attached to a vehicle body member about an axis 4°4, and a wheel 2 is attached to the tip of the trailing arm 1 and the vehicle body facing it. A so-called trailing arm type wheel suspension device in which a suspension spring 3 is interposed between members and the swinging of the trailing arm 1 caused by the vertical vibration of the wheel 2 is elastically supported by the suspension spring 3 is used for example at the rear of an automobile. It is generally used as a suspension device for wheels, etc.
(Refer to Japanese Patent No. 85912) It is very difficult to adjust the vehicle height with this type of wheel suspension system.

The present invention is designed to facilitate vehicle height adjustment by improving the suspension spring support structure, and will be described below with reference to the embodiment shown in FIG.

In the present invention, as shown in FIG. 2, the upper surface of the trailing arm 1 is recessed to form a cylindrical spring receiving portion 1a.
In addition, the lower surface of the trailing arm 1 is similarly recessed 1 to form a vehicle height adjustment portion 1b below the spring receiving portion 1a.

An adjustment bolt 7 is provided in the vehicle height adjustment section 1b so that its tip protrudes upward from the center of the bottom surface of the spring receiving section 1a, and the tip 7a of the adjustment bolt 7 touches the center of the spring seat 5. part is supported.

The spring seat 5 is fitted so that its outer peripheral flange portion 5a faces closely to the inner peripheral surface of the spring receiving portion 1a, and supports the lower end portion of the spring 3.

Reference numeral 6 indicates a plate interposed between the spring seat 5 and the tip 78 of the adjustment bolt 7, and 8 indicates a lock nut.

According to the present invention configured as described above, the adjustment bolt 7
1, the spring seat 5 supported at its tip 7a moves up and down while being guided by the inner peripheral surface of the spring receiver 1a, making it easy to adjust the vehicle height. The amount of change is b/a times the amount of adjustment (see FIG. 1).

Further, as shown in the second figure, the adjustment bolt 7 is provided in the vehicle height adjustment part 1b recessed in the lower surface of the trailing arm 1, so that the bolt 7 protrudes downward from the lower surface of the trailing arm 1. There are no problems at all.

The tip 7a of the adjustment bolt 7 is formed into a spherical shape, and a spherical recess is formed in the center of the spring seat 5, so that the spherical portion at the tip of the adjustment bolt 7 fits into the spherical recess and is supported. Then, when the trailing arm 1 swings up and down, the spring seat 5 will always be freely inclined to be perpendicular to the center line of the spring 3, and the angle difference between the spring seat on the vehicle body side and the spring seat 5 on the trailing arm 1 side will be It is possible to prevent spring buckling caused by this.

As described above, according to the present invention, it is possible to easily adjust the vehicle height in a trailing arm type wheel suspension system with an extremely simple configuration, and it can bring about great practical effects.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an example of a wheel suspension system to which the present invention is applied, and FIG. 2 is a longitudinal cross-sectional view of essential parts showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Trailing arm, 1a... Spring receiving part, 1b... Vehicle height adjustment part, 2... Wheel, 3...
・Suspension spring, 4... Axis, 5... Spring seat, 7... Adjustment bolt.

Claims (1)

[Scope of utility model registration request] The upper surfaces of the suspension arms, which are attached to the vehicle body side member so as to be able to swing up and down, are stacked four times to form a spring receiver, and the lower surface of the suspension arm is recessed to form a vehicle height adjustment section at the bottom of the spring receiver. An adjustment bolt is attached to the vehicle height adjustment part so that its tip protrudes above the bottom surface of the spring receiving part, and the center part of a spring seat that supports the lower end of the suspension spring whose upper end is supported by the vehicle body side member is attached to the height adjustment part. A wheel suspension system for an automobile, characterized in that the suspension is supported by a tip end of an adjustment bolt protruding into the spring receiving part.