KR0153195B1 - Attaching structure for vehicle suspension system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile suspension mounting structure, wherein the upper control arm and the mounting structure of a conventional knuckle and suspension are shown in FIG. 1, and the structure is described in (a) in the knuckle (2). (3) is formed, the lower groove is smaller than the upper part. Tilt the stud ball (4) in the knuckle groove (3) to fill the threaded portion of the stud ball (4) into the nut (10), and then insert the split pin (11) into the split pin groove formed in the lower end of the stud ball (4) to bend the end Fix it. (b) is the lower end of the stud ball is not a screw groove, but after inserting the stud ball (4) to assemble the bolt and nut and then bend the end of the split pin to combine.

However, the conventional upper control arm mounting structure has a problem in that the work efficiency is lowered because the number of parts for preventing the flim is large and difficult to process and assemble. Therefore, the present invention has been devised to solve this problem, it is easy to assemble and is also invented to improve the work efficiency by reducing the number of parts.

Description

Car suspension structure

1 is a suspension structure mounting structure.

2 is a perspective view according to the suspension installation,

(a) is a perspective view of a first embodiment.

(b) is a perspective view of a second embodiment.

3 is a diagram illustrating mounting of a suspension device according to the present invention.

* Explanation of symbols for main parts of the drawings

1: upper control arm 2: knuckle

3: knuckle groove 4: stud ball

5: Stud ball groove 6: Hex nut

7: threaded portion

The present invention relates to a vehicle suspension mounting structure, and more particularly to a vehicle suspension mounting structure to reduce the cost by improving the assembly and processability using a nut of a special shape.

In general, suspension is a device that connects the axle and the body so as not to directly transmit the vibration or shock received from the road surface to the body while driving, thereby preventing damage to the body and cargo and improving ride comfort. It is composed of chassis spring, shock absorber which controls the free vibration of chassis spring to improve ride quality, and stabilizer which prevents rolling of automobile.

Suspension also plays an important role in transmitting the driving force generated from the driving wheel or the braking force of each wheel during braking to the body, and withstanding the centrifugal force during the turning, and maintaining each wheel in the position of the bar.

The following are the conditions to be met at the current price:

① In order to alleviate the impact from the road surface, flexible coupling is required in the vertical direction.

② Strong coupling in horizontal direction is necessary to withstand driving force, braking force and centrifugal force during turning.

These conditions are contrary to each other, but various forms have been devised to satisfy the two conditions as much as possible.

Springs used for suspension include springs using bending elasticity, coil springs or torsion bar springs using torsion, rubber springs using rubber's elasticity, and air springs using air pressure.

As a kind of front axle and front suspension, rigidaxle is generally used for trucks and buses, and a split axle is used in a type that emphasizes ride comfort and maneuverability, such as a car.

In addition, the split axle is also called a stand-alone type, and generally a wish bone type and a strut type are adopted.

The front axle and front suspension are described separately from the axle.

In the axle type, the left and right wheels are connected to one axle (axle), and the axle is mounted on the vehicle body via a spring. The axle type is most widely used in heavy trucks and buses because of its high strength and simple structure.

Leaf springs (leaf spraing) is used a lot of springs, depending on the layout there are parallel leaf springs and horizontal leaf springs, but parallel leaf springs are commonly used.

The front axle generally has a cross-sectional shape of type I, and is produced by forging a special steel by installing a king pin hole for attaching a steering knuckle and a spring seat for attaching a leaf spring to both ends. In some cases, the spring sheet is welded.

Steering knuckles include the following methods: Elliot, Inverse Elliot, Mamon, and Lu shape. Among them, Inverse Elite type is generally used, and other types are rarely used.

The following describes the most commonly used front suspension leaf springs.

The springs of the planar leaf springs are mounted almost parallel to the body, with one end of the spring mounted directly on the frame with a pin inserted, and the other end mounted on the frame through the sackle to absorb the change in span when the spring deforms. It is.

The axle is provided by a U bolt near the center of the leaf spring, but a caster plate for adjusting the caster of the front wheel is also provided between the spring seats.

The parallel leaf spring type spring has the effect of keeping the axle in place in addition to the act of alleviating the impact from the road surface, so that a device for supporting the axle is unnecessary, and the structure is simplified, but wheels are generated. Since the maneuvering force, braking force, and lateral drag during turning are all transmitted through the spring to the body, there is a drawback that you cannot use a flexible spring.

The horizontal leaf spring type is fixed to the frame with a U bolt at the center of the spring, and both ends are coupled to the axle through a sackle. In this type, it is necessary to install a press rod, a torque bar, a panel rod, etc. for positioning the axle, to receive the force in the front-rear direction, the reaction torque generated during braking or driving.

When it is difficult for the spring itself to maintain the axle as described above, since the distinction between the axle and the suspension is not clear like the axle type, both will be described. Comparing the independent formula with the axle formula is as follows.

Advantage

① As the height of the garage can be lowered, the stability of the car is improved.

(2) The spring load becomes smaller, resulting in better riding comfort.

③ The wheels are hard to produce, and the rod holding is good.

4. Flexible chassis spring can be used.

And the disadvantage is

① The structure becomes complicated, and there are disadvantages in terms of angle and handling.

② There are many joints and the alignment is likely to be wrong due to the wear.

③ As the wheel moves up and down, the tread or alignment changes in general, so the tire wears quickly.

Although the independent type is mainly used in a passenger car or a used car, the representative ones include a wishbone type and a strut type.

Wishbone type is the type that has been used a long time in front suspension, and two upper and lower suspension arms made of V type are mounted on the frame by the shaft, and the tip of each suspension arm is connected to the steering knuckle by the bull joint. In this type, the suspension arm supports all the braking force and the cornering force generated on the wheels, and the spring supports the load in the vertical direction only.

Wishbone type uses a lot of spring type. It consists of two suspension arms up and down, a rock shaft installed through the threaded bush in the suspension arm, and a steering knuckle that is installed between the lower suspension arm and the frame and can rotate for up and down movement and steering.

In this form, the camber or tread changes depending on the length and length of the upper and lower suspension arms. In this case, since it is impossible to prevent both sides from changing, in general, the lower arm is longer than the upper arm to avoid wear of the tire, so that the change in the crad is small even if the change in cambium becomes slightly larger.

The trailing link type supports the wheels by one or two arms toward the rear of the vehicle. Since the axis of the trailing arm is installed at right angles to the traveling direction of the vehicle, the tread or camber changes due to the vertical movement of the wheels. There is no, but the casters vary considerably.

Strut type has the following characteristics.

① Compared to the wishbone type, the structure is poorer, there are fewer components, and the maintenance is easy.

(2) Since the lower weight of the spring can be reduced, load holding and riding comfort are good.

③ The effective space of the engine room can be made wide.

In addition, the upper control arm and the mounting structure of the conventional knuckle and the suspension device are shown in FIG. 1, and the structure is described in (a), where the knuckle groove 3 is formed in the knuckle 2, but the lower part of the knuckle 2 is formed. The home of the is smaller. Insert the stud ball (4) into the knuckle groove (3) to fill the threaded portion of the stud ball (4) with the nut (10), and then insert the split pin (11) into the split pin groove formed in the lower end of the stud ball (4) to bend the end Fix it.

(b) is the lower end of the stud ball is not threaded groove, but after inserting the stud ball (4) to assemble the bolt and nut and then bend the end of the split pin to combine.

However, the conventional upper control arm mounting structure has a problem in that the work efficiency is lowered because the number of parts for preventing loosening is large and it is difficult to process and assemble.

Therefore, the present invention has been made to solve this problem, the object is to facilitate the assembly and to reduce the number of parts to improve the work efficiency.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The knuckle groove 3 is formed in the knuckle 2 to form the screw portion 7 on the inner side thereof, and the stud ball groove 5 is formed in the hexagon nut 6 so that the stud ball 4 can be coupled thereto. do.

The operation and effects of the present invention configured as described above are as follows.

The present invention forms a knuckle groove (3) in the knuckle (2) to form a threaded portion (7) on its inner surface, the hex nut (6) is inserted into the knuckle (2) and turned, the hex nut (6) stud Stud ball groove (5) is formed so that the ball (4) can be assembled by inserting the stud ball (4) into the stud ball groove (5).

Therefore, the present invention has a long knuckle fastening screw portion is a fastening force is increased, since the force direction of both screw parts are symmetrical, the loosening is prevented, there is an effect of reducing the number of parts and easy assembly.

Claims (1)

An outer circumferential surface is formed with a screw portion 7, and an inner hexagonal nut 6 having a hexagonal flat plate is integrally formed at a lower portion of a cylindrical shape in which a stub groove 5 is formed, and a screw portion 7 of the hexagon nut 6 is formed integrally. To form a screw-type knuckle groove (3) in the center of the plate to be fastened to the left and to be connected to the knuckle groove (3) of the knuckle (2) to be connected to a single knuckle (2) bent long downward Car suspension structure, characterized in that to form a ball on the top to be fastened to the stub groove (5) of the hexagon nut (6) fastened to the bottom by fastening the stud ball (4) connected downward long .