KR20090018304A - A suspension for a vehicle - Google Patents

Abstract

A suspension apparatus for vehicles is provided to improving the space efficiency of the vehicles as lowering the location of the shock absorber. A suspension apparatus for vehicles comprises an upper arm(20) and the lower arm(30) connected to the tire(50), a shock absorber(10) mounted on the lower arm, a coil spring(40) installed at the circumference of the shock absorber. The shock absorber is installed between the upper arm and lower arm. The coil spring is installed in the circumference of the shock absorber. The rocker arm(22) is protruded from the outer side of the axis of rotation(21) of the upper arm.

Description

Suspension System for Vehicles {a suspension for a vehicle}

The present invention relates to a suspension device for a vehicle, and more particularly, to minimize the suspension space by installing a shock absorber and a spring between the upper arm and the lower arm to significantly reduce the vertical height of the suspension.

Suspension device for a vehicle according to the present invention is a stay that connects the axle and the body and prevents the shock absorber from the road surface and the shock absorber that absorbs the free vibration of the spring to prevent the vehicle from shaking left and right. It is composed of a villaiser and the like to improve the ride comfort of a car.

The suspension is divided into a front suspension and a rear suspension according to the installation position of the vehicle.

The front suspension is a device that connects between the frame and the axle to support the weight of the vehicle, absorbs the vibration of the wheel, and installs a part of the steering mechanism.

In addition, the front suspension can be divided into axle suspension type and independent suspension type (divided axle suspension type) according to the type of front axle.In general, the independent suspension type is frequently used in passenger cars that emphasizes riding comfort or maneuverability. Axle expression is used a lot.

In the case of the solid axle suspension suspension, both wheels are installed on the integrated axle, and then the springs are installed on the body through the spring, and the bus, the truck is used on the front and rear axles, and the passenger car is used on the rear axle. do.

Leaf springs are mainly used as springs. There are parallel spring type and lateral spring type according to their arrangement.

In general, parallel plate spring type is used and coil spring, air spring and torsion bar spring are used.

Independent Suspension Axles are split so that both wheels move independently of each other, and the ride and stability are improved.Wishbone and Macpherson types can be largely divided. All cars employ almost McPherson type suspension systems.

Wishbone type consists of Upper and Lower Control Arm, Steering Knuckle, Coil Spring, etc., and the wheel is cushioned by the spring to move up and down.

In this type, the control arm supports all the braking force and the turning force generated on the wheel, and the spring supports only the vertical load.

The McPherson type is integrated with the steering knuckle and consists of a strut, ball joint, control arm and spring with a shock absorber inside.

Compared to the wishbone type, the McPherson type is widely used because of its simple structure, fewer components, easy maintenance, and light weight of the spring, which makes rod holding and riding comfortable.

The Wish Bone Type, on the other hand, supports both the braking force and the turning centrifugal force generated by the wheels by the suspension arm, and the spring supports only the vertical load.

There are several different formats for this format, depending on the layout of the spring and the type of spring used.

The Strut Type or Mcpherson Type is integrated with the steering knuckle and the strut with the shock absorber, the suspension arm, the ball joint and the spring connecting the suspension arm and the lower part, etc. It consists of.

The upper part of the strut is coupled to the body via the support, which is in contact with the thrust bearing.

The weight of the vehicle is supported by the body through the suspension support, and the steering makes the strut rotate with the knuckle.

Recently, the front suspension system of a passenger car produced mostly uses McPherson type suspension system.

The rear suspension system generally uses axle suspension expressions, but in the case of passenger cars, independent suspension expressions are used to increase riding comfort and stability.

Rigid Axle Suspension Type is a suspension type that holds the body through the spring by connecting the left and right wheels with a single axle.It is a laminated leaf spring, coil spring, air spring type. Spring).

If the rear suspension system is independent suspension, the weight under the spring can be lightened, so that the ride or stability can be improved, and the floor of the body can be lowered. Doing.

In the related art, the vehicle suspension apparatus has a lower end portion of the main body 11 'of the shock absorber 10' mounted on a mounting bracket 31 'provided on the upper surface of the lower arm 30' as shown in FIG. The upper end of the elevating rod 12 'of the shock absorber 10' projecting to the upper portion of the T-shaped upper arm 20 'is fastened to the vehicle body to cushion shocks, and a coil is formed around the upper portion of the shock absorber 10'. The type in which the spring 40 'is coaxially mounted is mainly used.

In the conventional suspension device, a predetermined shock absorber stroke is required in order to cushion a shock caused by the vertical movement of the tire, so that the upper portion of the shock absorber 10 'is generally positioned higher than the tire 50'.

However, when the shock absorber 10 'is positioned higher than the tire 50' and the upper arm 20 ', the space efficiency of the vehicle is lowered, and in the case of the front wheel, the space with the hood is insufficient, which interferes with the hood. In order to avoid the hood has to be high, this causes a problem that is inadequate for a vehicle that emphasizes styling such as a sports car, and also has a problem that can not avoid the disadvantage that the trunk space is reduced when applied to the rear wheel.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a suspension device for a vehicle that can lower the position of the shock absorber and improve the space efficiency of the vehicle.

In order to achieve the above object, the present invention provides a vehicle suspension apparatus including an upper arm connected to a tire, a lower arm, a shock absorber mounted on the lower arm, and a coil spring installed around the shock absorber. A shock absorber is provided between the upper arm and the lower arm, and a coil spring is provided around the shock absorber.

In addition, the present invention is to mount the upper end of the elevating rod of the shock absorber to the rocker arm protruding to the outer side of the rotary shaft of the upper arm, the lower end of the main body of the shock absorber to the mounting bracket provided on the inner upper surface of the rotary shaft of the lower arm, The coil spring is provided between the spring lower seat provided at the lower end of the main body of the absorber and the spring upper seat provided at the upper end of the lifting rod of the shock absorber.

In the present invention, since the shock absorber is installed between the upper arm and the lower arm, the overall height of the suspension is significantly lowered. Accordingly, when applied to the front wheel, the height of the hood can be significantly lowered, which is greatly advantageous for styling. In this case, the trunk room space can be greatly increased.

Hereinafter, the specific technical details of the present invention will be described in more detail with reference to the accompanying drawings.

That is, Fig. 2 is a front view of the main part of an embodiment of the present invention, and Figs. 3 and 4 show a perspective view of the upper arm and the lower arm of the embodiment, and the suspension device for a vehicle according to the present invention is a tire. An upper arm 20 and a lower arm 30 connected to the 50, a shock absorber 10 mounted on the lower arm 30, and a coil spring 40 installed around the shock absorber 10. In configuring a vehicle suspension device, a shock absorber 10 is provided between the upper arm 20 and the lower arm 30, and a coil spring 40 is provided around the shock absorber 10. will be.

In the illustrated embodiment, the upper end of the elevating rod 12 of the shock absorber 10 is mounted on the rocker arm 22 protruding from the outer side of the rotary shaft 21 of the upper arm 20, and the rotary shaft of the lower arm 30 is mounted. The lower end of the main body 11 of the shock absorber 10 is mounted on a mounting bracket 32 provided on the inner upper surface of the 31, and the spring lower seat 41 provided at the lower end of the main body 11 of the shock absorber 10. The coil spring 40 is provided between the spring upper seats 42 provided on the lifting rod 12 upper end of the shock absorber 10.

In the present invention, as shown in FIG. 3, the upper end of the elevating rod 12 of the shock absorber 20 is mounted at an offset position in the vehicle from the rotation shaft 21 of the upper arm 20, and the lower arm as shown in FIG. 4. The lower end of the main body 11 of the shock absorber 10 is mounted at an offset position from the rotation shaft 21 of the vehicle 20 to the outside of the vehicle.

Therefore, when the vehicle is in a tolerant state, as shown in FIG. 3, the initial length L1 is maintained before bumping (bumping) of the shock absorber 10, but as the tire 50 is bumped, the upper arm mounting position A is The lower arm mounting position (B) moves toward the upper direction of the vehicle. As shown in FIG. 5, the coil spring 40 is compressed and the lifting rod 12 of the shock absorber 10 is moved to the main body 11. Since the total length of the shock absorber 10 is received inside and reduced to L2, a damping force is generated in the shock absorber 10 by the difference between the initial state and the length after bumping (L1-L2), and the coil spring 40 Reaction forces are formed to function as suspension components.

1 is a perspective view of main parts of a conventional vehicle suspension apparatus

2 is a front view of main parts of one embodiment of the present invention;

3 is a perspective view of the upper arm of the embodiment;

4 is a perspective view of a lower arm of the embodiment;

5 is a front view of the bump state of the embodiment

<Description of Signs of Major Parts of Drawings>

10: shock absorber 11: body

12: lifting rod 20: upper arm

22: rocker arm 30: lower arm

32: mounting bracket 40: coil spring

50: tire

Claims (2)

The upper arm 20 and the lower arm 30 connected to the tire 50, the shock absorber 10 mounted on the lower arm 30, and the coil spring 40 installed around the shock absorber 10 are mounted. In the vehicle, the shock absorber 10 is provided between the upper arm 20 and the lower arm 30, and the coil spring 40 is installed around the shock absorber 10. Suspension device. The upper end of the lifting rod 12 of the shock absorber 10 is mounted on a rocker arm 22 protruding from the outer side of the rotation shaft 21 of the upper arm 20, and the lower arm 30 The lower end of the main body 11 of the shock absorber 10 is mounted on a mounting bracket 32 provided on the inner upper surface of the rotary shaft 31, and the spring lower seat 41 provided at the lower end of the main body 11 of the shock absorber 10. And a coil spring (40) between the spring upper seat (42) provided on the elevating rod (12) of the shock absorber (10).

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