KR20070079481A - Suspension bumper stopper - Google Patents

Abstract

A suspension bumper stopper is provided to minimize shock and to improve riding comfort by evenly absorbing shock such that the spring constant is not suddenly changed in all shock periods. A suspension bumper stopper is installed between a chassis frame and an axle(2). The suspension bumper stopper is formed at a lower end thereof with a convex round section(12). A plate(3) is mounted on the axle(2). The plate(3) has a concave round section(31) that corresponds to the convex round section(12) of the suspension bumper stopper. A plurality of corrugate sections(11) are formed at a lateral side of the suspension bumper stopper. A hollow section(13) is formed in the suspension bumper stopper.

Description

Suspension Bump Stopper {SUSPENSION BUMPER STOPPER}

1 is a view showing a conventional suspension bump stopper structure;

2 is a graph showing the relationship between the displacement and the load of the suspension to which the suspension bump stopper structure of FIG. 1 is applied;

3 is a view showing a suspension bump stopper structure as one embodiment according to the present invention; And,

4 is a graph illustrating a relationship between a displacement and a load of a suspension to which the suspension bump stopper structure of FIG. 3 is applied.

<Explanation of symbols for the main parts of the drawings>

1, 9: bump stopper

11: wrinkles

12: convex round part

13: hollow part

2: axle

3: plate

31: concave round

According to the present invention, the bump stopper is formed long and vertically, and the lower part of the bump stopper and the upper part of the plate mounted on the upper part of the axle have a round structure, and the inside of the bump stopper is hollow, so that the impact force can be efficiently evened during the entire period of the impact. A suspension bump stopper structure for absorption.

The axles that hold the wheels of the vehicle are not connected directly to the body, but are connected through the body and suspension to absorb shocks from the road surface. The suspension is a mixture of the function of the damper and the function of the spring to absorb the impact from the road surface has the purpose to ensure that the impact of the road to the passenger to the minimum.

If the suspension of the body is soft, the impact on the road is less transmitted to the occupant, but the body may feel slack. If the suspension is hardened, the impact of the body is reduced but the impact from the road is transmitted to the occupant. It becomes bigger.

If the impact from the road surface is very large, the suspension will not be able to absorb all the impact, and the axle will hit the body. This is undesirable because it introduces strain on both the body and the axle. Therefore, by installing a bump stopper made of rubber material on the body portion that may hit the axle, the bump stopper absorbs the shock when the axle hits the body due to a large impact to reduce the impact that can occur on the body and axle.

1 is a view showing a conventional suspension bump stopper structure, Figure 2 is a graph showing the relationship between the displacement and load of the suspension to which the suspension bump stopper structure of Figure 1 is applied.

The conventional bump stopper 9 is mounted on a vehicle body frame (not shown), and is installed to be spaced apart from the axle 2 by D as shown in FIG. The impact of the road surface causes the axle 2 to bounce upwards, and the suspension (not shown) absorbs the shock while the axle bounces by D distance.

If the impact from the road surface is so great that the axle (2) has bounced all the D distances and the shock has not been absorbed by the suspension, the axle (2) hits the bump stopper (9) and the rubber bump stopper (9). Will absorb the shock.

In order to secure the durability of the bump stopper 9, the shape of the bump stopper 9 is conventionally made into a simple rectangular shape, so that the impact generated by the bump stopper 9 becomes considerable.

Referring to Fig. 2, the relationship between the displacement of the axle and the load that generates the displacement is shown. Section A of the displacement is a section in which the shock is absorbed by the suspension (section in which the axle is bounced by the D-distance of FIG. 1) and section B is a section in which the shock is absorbed by the suspension and the bump stopper 9 ( In FIG. 1, after the axle bounces by a distance D, a shock absorbed by the suspension and the bump stopper).

Looking at it, it can be seen that there is a very large load change even in a small displacement in section B. In other words, this part is a part where the spring constant is rapidly increased and the passenger feels a great shock in this part.

As described above, the conventional bump stopper structure is inefficient in shock and vibration absorption performance, and in particular, the impact feeling is greatly felt, which is a factor that lowers the riding comfort.

Therefore, the present invention is to solve the conventional problems as described above, the suspension bump stopper to minimize the impact and improve the ride comfort by absorbing the shock evenly so that there is no sudden change in the spring constant in the entire section of the axle displacement The purpose is to provide.

In order to achieve the above object, the present invention is a bump stopper structure which is installed in the vehicle body frame between the vehicle body frame and the axle, the bump stopper is formed with a convex round portion at the lower end, and corresponds to the convex round portion at the top of the axle A plate on which a concave round portion is formed is mounted, and a plurality of wrinkles are formed on the side surface of the bump stopper. Such a structure allows the shape to be maintained when the bump stopper deforms due to collision between the axle and the body.

Here, the hollow portion may be formed inside the bump stopper. This allows the bump stopper to have a softer stiffness.

In addition, the bump stopper may have a longer shape up and down than left and right so that the axle contacts the bump stopper earlier than before, so that the impact is more dispersed during the relative distance (displacement) section between the axle and the body.

Hereinafter, an embodiment of a suspension bump stopper structure according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a diagram illustrating a suspension bump stopper structure according to an embodiment of the present invention, and FIG. 4 is a graph showing a relationship between a displacement and a load of a suspension to which the suspension bump stopper structure of FIG. 3 is applied.

The bump stopper structure which concerns on this invention is equipped with the plate 3 in which the concave round part 31 was formed in the upper part of the axle 2, and the bump stopper 1 is attached to the vehicle body frame (not shown). to be. The lower part of the bump stopper 1 consists of a convex round part 12 of a shape corresponding to the concave round part 31 of the plate 3, and between the convex round part 12 and the concave round part 31. The distance is spaced by d smaller than the distance D (see FIG. 1) between the conventional bump stopper 9 and the axle 2.

The bump stopper 1 has a shape longer and longer than the conventional bump stopper 9 (see FIG. 1), which has a longer rectangular shape to the left and right, and has a plurality of wrinkles 11 in the middle portion of the bump stopper 1 (an embodiment) Is formed), and the hollow portion 13 is formed inside the bump stopper 1.

Since the round structures 12 and 31 of the plate 3 and the bump stopper 1 are engaged with each other when the axle 2 and the bump stopper 1 collide, the bump stopper 1 having a long shape in the vertical direction is deformed. Also serves to maintain the shape. This function allows the bump stopper 1 to secure durability and shock absorbing function.

In addition, the hollow part 13 structure inside the bump stopper 1 allows the bump stopper 1 to have a softer rigidity characteristic, thereby reducing the impact caused by the sudden spring constant change.

In addition, the pleats 12 on the side of the bump stopper 1 function to maintain the shape during the bump stopper 1 collision.

These characteristics allow the bump stopper 1 to have stiffness gradually and to bring the axle 2 and the bump stopper 1 into initial contact when there is a road impact, thereby minimizing the impact caused when the vehicle body collides with the axle.

The relationship between the displacement and the load of the suspension obtained by the above structure is shown in FIG. 4. The relationship between the displacement and the load until the axle 2 springs up by the distance d due to the impact of the road surface is represented by C, and the relationship between the displacement and the load after the axle 2 springs up by the distance d is represented by E. As shown. The boundary between the sections C and E is a moment where the round structures 12 and 31 of the plate 3 and the bump stopper 1 come into contact with each other. The curve shown in the graph plots a gentle curve over all displacement intervals. This evenly distributes the impact force of the road surface compared to Figure 2, significantly minimizing the impact feeling and improved the ride comfort.

As described above, the bump stopper structure of the present invention minimizes the impact feeling of the occupant and improves the riding comfort.

The present invention is not limited to the embodiments described, and it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. It belongs to the claims of the invention.

Claims (3)

A bump stopper structure installed on the body frame between the body frame and the axle, The bump stopper has a convex round portion formed at a lower end thereof, The upper part of the axle is mounted with a plate formed with a concave round portion corresponding to the convex round portion, Suspension bump stopper structure, characterized in that a plurality of wrinkles are formed on the side of the bump stopper. The method of claim 1, Suspension bump stopper structure, characterized in that the hollow portion is formed inside the bump stopper. The method according to claim 1 or 2, Suspension bump stopper structure, characterized in that the bump stopper has a shape longer than the left and right.

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