KR100836390B1 - Steering column structure having collapse guide of vehicle - Google Patents

Abstract

The present invention relates to a steering column structure of a vehicle, which can prevent interference with peripheral portions due to left and right tilting when the steering column is buckled, and prevent buckling of the vehicle collision performance by smoothly buckling in the column axial direction. The present invention relates to a steering column structure having a buckling guide capable of securing a vehicle driver's safety.

The steering column structure including the buckling guide of the present invention is a steering column structure including an out tube and an inner tube, the guide plate being installed on the uppermost circumference of the steering column and formed over the out tube and the inner tube, and the guide. And a curling plate extending from the curling guide and the curling guide, and a distance bracket positioned at the bottom of the curling guide.

Description

Steering column structure with buckling guides {STEERING COLUMN STRUCTURE HAVING COLLAPSE GUIDE OF VEHICLE}

1 is a perspective view showing the structure of a steering column of a conventional vehicle,

2 is a graph showing the change in the initial buckling load and the running rod of the steering column by the lateral load in the conventional steering column structure;

3 is a graph showing a change over time of a load applied when buckling a conventional steering column;

4A and 4B are perspective views showing the structure of a steering column with a buckling guide according to the present invention;

5a to 5c is a view showing a binding state of the parts around the steering column of the present invention,

Figure 6 is a view showing the side portion binding structure of the guide plate of the present invention.

<Description of Symbols for Main Parts of Drawings>

30: out tube 40: inner tube

50: distance bracket 60: guide plate

70: guide bolt 80: curling guide

81: curling pin 83: curling plate

100: steering column

The present invention relates to a steering column structure of a vehicle, and in particular, it is possible to prevent interference with the peripheral portion due to left and right tilting during buckling of the steering column, and to smoothly perform buckling in the column axial direction, thereby reducing vehicle crash performance. The present invention relates to a steering column structure including a buckling guide of a vehicle capable of preventing the vehicle driver's safety.

In general, since the steering column of the vehicle is mounted on the vehicle so as to rise from the lower side toward the driver, the steering column itself acts as an element that can injure the driver in case of a collision of the vehicle. In order to cope with the problem, when a load of a certain size or more is applied to the steering column, the steering column itself is buckled, thereby minimizing the driver's collision.

The buckling action of the steering column as described above can be properly exhibited according to the situation to minimize the driver's injury. In other words, too small a buckling load of a steering column will not be of great help to the driver in a severe collision, and a collapse load of a too large steering column may cause a driver's injury due to poor buckling action even in a relatively weak accident. It will not be reduced properly.

Therefore, it is preferable that the buckling of the steering column is made only in the axial direction of the steering column in the event of a vehicle collision or the like.

However, during the vehicle crash test for proper buckling load setting and inspection, the buckling of the steering column is not performed only in the axial direction and due to the external force in the left and right directions due to the characteristics of the collision, There is a problem in that the collision performance of the steering column is degraded or retested due to interference, and it is difficult to guarantee the collision performance.

If the steering column interferes with the peripheral parts during the vehicle collision, the driver's chest injury and head injury are worsened by the occurrence of the peak.

In addition, when the engine room is pushed due to the collision of the vehicle and bending of the steering column lower part, the buckling of the steering column is hindered, which causes a problem that the buckling load of the steering column is increased.

1 is a perspective view showing an example of a conventional steering column structure.

As shown in the related art steering column structure, the upper tube (1) located on the upper side of the lower tube (3) for shock absorption is to be supported on the vehicle body side through the upper mounting bracket (9), and the upper mounting bracket A capsule 5 is provided between the body 9 and the body to support the body through the upper mounting bracket 9 and to be separated from the upper mounting bracket 9 when the steering column is buckled.

That is, the conventional steering column structure is configured by the friction method between the upper tube (1) and the lower tube (3) for the shock absorption, and the molding is applied to two capsules (5) of the upper mounting.

On the other hand, Figure 2 shows the occurrence of the initial buckling load peak of the steering column according to the magnitude of the side force (shown in Table 1 below) and the running load at the displacement 60mm point It is a graph showing the change in size.

TABLE 1

NO Purpose of test Lateral Force (Kgf) Peak Load (Kgf) Running rod (60mm displacement) One Principle test 0 450 550 2 Verification test (1) 300 600 750 3 Verification test (2) 475 685 770

As shown in Table 1 and Figure 2, it can be seen that the magnitude of the initial buckling load peak of the steering column also increases as the magnitude of the lateral force increases.

In addition, conventionally, the capsule molding process is applied to the steering column to fix the upper part of the steering column, so that the initial buckling load value of the steering column is high.

3 is a graph showing a change with time of a load applied when buckling a conventional steering column.

As can be seen in the graph, it can be seen that the initial buckling load value of the steering column 10 is greatly increased due to the encapsulation molding 5 installed on the steering column 10.

That is, when buckling of the steering column due to a vehicle collision occurs, the initial buckling load value should be small in order for the buckling to occur better, but the buckling load of about 180 to 200 kgf necessarily exists as the initial peak due to the installation of the capsule molding. Lowering the value becomes difficult.

Accordingly, an object of the present invention is to provide a steering column structure having a buckling guide that buckling stably occurs when buckling occurs on a steering column.

Steering column of the present invention for achieving the above object in the steering column structure consisting of the outer tube and the inner tube, the upper guide plate located on the upper side of the out tube, and integrally extending toward the inner tube side from the upper guide plate A guide plate consisting of a lower guide plate, a curling guide positioned at the bottom of the guide plate and installed on the top of the outtube side, a curling plate extending from the curling guide, and a distance bracket located at the bottom of the curling guide. Including a, it is characterized in that the buckling in the steering column axial direction can be made smoothly to prevent the deterioration of the vehicle collision performance, and to improve the safety of the driver.

The guide plate of the present invention includes an upper guide plate positioned on the upper side of the out tube side and a lower guide plate extending downward from the upper guide plate, and the lower guide plate is bent in a streamlined manner to form an inner tube of the steering column. It is preferable to form the structure extended to the side and bound.

In addition, long holes are formed on the upper surface of the upper guide plate, and through holes are formed in the streamlined bent portion of the rear guide plate, so that the coupling with the guide bolts is facilitated and the buckling of the steering column is performed smoothly. It is desirable to lose.

Wings are formed on both sides of the upper guide plate, and the folds are bent from the front side to be folded to the bottom of the wing.

The distance brackets located at the bottom of the curling guide may include a flat upper bracket and side distance brackets on both sides, and a protruding jaw extending integrally in the lateral direction may be formed on the side distance brackets.

In addition, the protruding jaw is fixed in such a way that the folding member of the guide plate is wrapped, it is preferable to be configured so that the distance bracket buckling from the folding member when the steering column is buckled.

Hereinafter, a preferred embodiment of the steering column structure according to the present invention with reference to the accompanying drawings will be described in detail.

4A and 4B are perspective views showing a steering column structure with a buckling guide according to the present invention,

5A to 5C are views showing the binding state of the peripheral parts fastened on the outtube of the steering column of the present invention, wherein the guide plate 60 and its curling guide 80 and the curling plate 83 are shown. It is a figure which shows the binding state.

In addition, Figure 6 is a view showing a side portion binding structure of the guide plate of the present invention, a steering column structure in place of the conventional capsule molding, showing a state of binding with the parts located on the side portion of the guide plate 60. Drawing.

Referring to the drawings together, the steering column 100 according to the present invention is made of a structure in which the outer tube 30 and the inner tube 40 is bound in the axial direction, the out tube 30 and the inner tube 40 A guide plate 60 is installed on the upper side of the guide plate 60, and a curling guide (80 in FIG. 5B) and a curling plate extending upward of the curling guide 80 are provided at the bottom of the guide plate 60. 83 of FIG. 5A is installed, and a distance bracket (50 of FIG. 5C) is located at the bottom of the curling guide 80.

The guide plate 60 of the present invention, as shown in Figure 4a, the upper guide plate 61 located on the upper side of the out tube 30 as a fixed structure and extends downward from the upper guide plate 61 It is divided into the lower guide plate 65 extending out to the inner tube 40 side and the lower guide plate 65 is bent in a streamlined shape, as shown in the form extending out to the inner tube 40 side of the steering column. Consists of In addition, on the upper surface of the upper guide plate 61, long hole-shaped long holes 61a are formed on both sides, and on the lower guide plate 65, elongated holes 65a are formed on the lower curved plate. have.

On both sides of the upper guide plate 61 of the present invention is formed a guide plate wing portion (63 of Figure 4a) is bent to the lower side and protruded in the lateral direction, the wing portion is bent from the front on the wing portion 63 (63) A folded portion (64 in Fig. 6) bent to the bottom is formed. This folding portion (64 in FIG. 6) is spaced apart from the bottom surface of the guide plate blade (63) by a predetermined distance, and the distance between the spaced bracket projection jaw (55 in FIG. 6) to be described later is inserted.

Figure 5b of the present invention in the structure of Figure 5a, the upper guide plate 60 is a view of being removed, Figure 5c is a state after the upper curling guide 80 in the structure of Figure 5b is removed It is shown.

As shown in FIGS. 5A to 5C, the distance bracket 50 located at the bottom of the curling guide 80 of the present invention includes a flat upper distance bracket 51 and two side distance brackets 53. The protrusion jaw 55 is formed on the side distance bracket 53, and the protrusion jaw 55 is applied to the guide plate foldable member 64 after bending the inner microscopic portion of the side distance bracket 53. ) Is fixed to the wrap, and the distance bracket 50 is to be released from the steering column during the buckling of the steering column.

In addition, binding members 56 and 59 are formed at the lower side of the side distance bracket 53 to bind the elastic members 58, and the binding members 56 and 59 are plate-shaped binding members 56 on the upper side. The lower side is formed of a pin-shaped binding member 59, respectively, and an elastic member 58 is installed between the binding members 56 and 59.

The curling plate 83 of the present invention is a member that deforms during buckling while surrounding the curling pin 81, and the curling pin 81 has a structure fixed together with the guide plate 60.

The operation state at the time of buckling the steering column in the steering column 100 structure with the buckling guide of the present invention configured as described above will be described.

In the steering column structure according to the present invention, when buckling of the steering column due to a vehicle collision occurs, the guide bolt 70 is buckled while moving along the guide plate 60, and the curling plate 83 is curling pin ( 81 and along the curling guide 80.

The lower end of the guide plate 60, that is, the lower guide plate 65 is formed in a streamlined shape and is connected to the lower mounting part, so that the external lateral bending force is absorbed by the guide plate 60.

Therefore, the bending phenomenon of the steering column due to the external force of the steering column lower part is absorbed by the guide plate 60, thereby preventing deformation of the tube part corresponding to the buckling section of the steering column, thereby acting more advantageously for the buckling of the steering column.

In addition, the guide plate 60 of the present invention is integrally formed over the upper tube 30 and the inner tube 40, so that the support force of the steering column can be strengthened and the rigidity can be prevented, and the curling guide 80 is The added advantage is that the curling deformation does not deform into a free shape at each test.

As described above, the steering column structure provided with the buckling guide according to the present invention can prevent the flow of the left and right sides of the out tube during the buckling of the steering column, the initial steering column by eliminating the conventional capsule molding structure It has an effect of reducing the buckling load peak.

In addition, it is possible to minimize the lateral bending force caused by the deformation of the lower mounting portion of the steering column, and by adding a curling guide, it is possible to prevent the change of the steering column buckling load due to the curling deformation form.

In addition, when the steering column is buckled, interference with the peripheral portion due to left and right tilting can be prevented, and the buckling in the column axial direction can be smoothly prevented, thereby reducing the vehicle collision performance and promoting the safety of the vehicle driver. It can be effective.

Claims (6)

In the structure of the steering column 100 consisting of the out tube 30 and the inner tube 40, A guide plate 60 consisting of an upper guide plate 61 positioned above the outtube 30 and a lower guide plate 65 extending integrally from the upper guide plate 61 toward the inner tube 40. Wow, Located at the bottom of the guide plate 60 and at the same time the curling guide 80 is installed on the upper side of the out tube 30, A curling plate 83 extending from the curling guide 80, Steering column structure characterized in that it comprises a distance bracket (50) located at the bottom of the curling guide (80). The method of claim 1, The lower guide plate (65) is bent in a streamlined shape and extends toward the inner tube (40) side of the steering column and is fixed to the steering column structure. The method of claim 1, Steering column structure characterized in that the long hole (61a) is formed on the upper surface of the upper guide plate (61), the through hole (65a) is formed in a streamlined bent portion of the lower guide plate (65). The method of claim 1, Wing parts 63 are formed on both sides of the upper guide plate 61, and a steering column structure is formed on the wing part 63, and a folding part 64 is bent from the front side and bent to the bottom of the wing part. . The method of claim 1, The distance bracket 50 located at the bottom of the curling guide 80 is composed of a flat upper bracket 51 and side surface side brackets 53 on both sides, and integrally laterally on the side distance brackets 53. Steering column structure characterized in that the protruding jaw (55) formed to extend. The method of claim 5, wherein The protruding jaw 55 is fixed in such a way that the folding portion 64 of the guide plate is wrapped, and the steering bracket 50 is configured to exit from the folding portion 64 when the steering column is buckled. Column structure.

Images