KR101138160B1 - Impact Asorption Steering Apparatus - Google Patents

Abstract

The present invention relates to a shock absorbing steering apparatus.

The present invention provides a steering apparatus including a mounting bracket for supporting an outer tube and fixed to a vehicle body, and an outer tube, one side of which is open, and the other side of which is attached to a mounting bracket, wherein the plate bracket is the mounting bracket. It is pressed into and fixed to the inner surface of the guide portion of the mounting bracket is provided with a protrusion, and both ends of the plate bracket provides a shock absorbing steering device, characterized in that the groove is formed corresponding to the protrusion.

In addition, the present invention is a steering apparatus configured to include a mounting bracket for supporting the outer tube to be fixed to the vehicle body and the outer tube and one side is open and the other side is coupled to the mounting bracket, the plate bracket is the It is pressed and fixed to the mounting bracket, and the projections are formed on both ends of the plate bracket, the guide bracket of the mounting bracket provides a shock absorbing steering apparatus, characterized in that the groove is formed corresponding to the projection. .

According to the present invention, instead of the capsule and the tearing plate used as the shock absorbing device of the steering column, impact energy is applied to the steering column by forming grooves or protrusions in the mounting bracket and the plate bracket, respectively, and pressing and fixing the protrusions in the grooves. In the case of losing, it is possible to reduce the manufacturing cost and reduce the manufacturing process by absorbing the impact load by the relative movement of the groove and the protrusion.

Steering Column, Mounting Bracket, Plate Bracket, Groove, Protrusion, Press-In

Description

Shock Absorbing Steering Apparatus {Impact Asorption Steering Apparatus}

1 is a side view showing a shock absorbing steering column of a vehicle according to the prior art;

2A is a partial perspective view of a mounting bracket and a plate bracket according to an embodiment of the present invention;

2B is a cross-sectional view of the mounting bracket and plate bracket according to the first, second and third embodiments of the present invention;

3A is a perspective view showing a first groove formed in the plate bracket according to the first and second embodiments of the present invention;

3B is a perspective view showing a second groove formed in the plate bracket according to the third embodiment of the present invention;

3C is a perspective view showing a first protrusion formed on an inner circumferential surface of a mounting bracket according to a first embodiment of the present invention;

3D is a perspective view showing a second protrusion formed on an inner circumferential surface of a mounting bracket according to a second embodiment of the present invention;

4A is a cross-sectional view of the mounting bracket and the plate bracket according to the fourth and fifth embodiments of the present invention;

4B is a perspective view showing a third protrusion formed in the plate bracket according to the fourth and fifth embodiments of the present invention;

4C is a perspective view showing a second groove formed in the inner circumferential surface of the mounting bracket according to the fourth embodiment of the present invention; And

4D is a perspective view illustrating a third groove formed on the inner circumferential surface of the mounting bracket according to the fifth embodiment of the present invention.

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

100: steering column 110: inner tube

120: outer tube 130: mounting bracket

140: capsule 170: tearing plate

180: plate bracket 210: first plate bracket

220: first mounting bracket 225: body portion

230: guide portion 240: fixing groove

245: wing portion 250: tilt long hole

260: first protrusion 270: first groove

310: second protrusion 320: second groove

410: second mounting bracket 420: second plate bracket

430: third protrusion 440: third groove

450: fourth home

The present invention relates to a shock absorbing steering apparatus. More specifically, the impact energy is applied to the steering column by forming grooves or protrusions in the mounting bracket and the plate bracket, respectively, instead of the capsule and the tearing plate, which are used as shock absorbers of the steering column, by pressing the protrusions into the grooves. In this case, by absorbing the impact load by the relative movement of the grooves and protrusions relates to a shock absorbing steering apparatus that can lower the manufacturing cost and reduce the manufacturing process.

In general, the steering column is a device that is formed to surround the steering shaft that transmits the rotational force generated by the driver's steering wheel to the rack-pinion mechanism part to support the rotation of the steering shaft, and is coupled to the vehicle body through the bracket to fix the steering shaft position. .

The steering column has a collapsing function in which both the steering column and the steering shaft are contracted in the axial direction in order to prevent the driver's upper body from being injured by the steering wheel in the event of a car crash. Shock absorbing steering columns are being applied. That is, when a collision accident occurs while driving a car, the upper body of the driver hits the steering wheel by inertia. When the upper body of the driver hits the steering wheel, the steering column and the steering shaft provided at the lower part of the steering wheel contract. It is to reduce the shock received.

However, depending on the driver's condition and the vehicle's condition, the impact applied to the steering wheel is inevitably different. For example, when the speed of the car is high, the impact may be large, and when the speed of the car is slow, the impact may be weak. have. In addition, the amount of impact applied to the steering wheel will vary according to various situations, such as whether the driver wears a seat belt and whether the airbag operates. To cope with such a situation, a steering apparatus having a tearing plate has been developed.

1 is a side view illustrating a shock absorbing steering column of a vehicle according to the prior art, and as shown in FIG. 1, the shock absorbing steering column 100 of the vehicle according to the prior art is connected to a steering wheel (not shown) at an upper end thereof. Steering shaft 102 whose lower end is connected to the rack-pinion mechanism part (not shown), inner tube 110 surrounding the steering shaft 102, outer tube 120 surrounding the inner tube 110, outer tube 120 Supporting the outer circumferential surface of the mounting bracket 130 is coupled to the vehicle body 104 via the capsule 140 and one end is fixed to the capsule 140 by the fixing means 150 and the other end through the fixing member 160 The tearing plate 170 fixed to the mounting bracket 130, wraps the outer tube 120 and one side is open and the other side is configured to include a plate bracket 180 coupled to the mounting bracket 130.

The steering column 100 is configured from the capsule 140 fixed to the vehicle body 104 when the upper body of the driver impacts the steering wheel during the front collision of the vehicle, so that the steering column 100 contracts in the impact movement direction. The mounting bracket 130 is moved together with the outer tube 120 in the collabs direction.

That is, when an impact is applied, the mounting bracket 130 is separated from the capsule 140, and the mounting bracket 130 is easily detached from the vehicle body 104 to move in the collapsing direction of the impact moving direction. Contraction.

In addition, the steering plate 100 is the steering column 100 is contracted when the mounting bracket 130 and the capsule 140 is moved relative to each other, the mounting bracket 130 is moved downward, the capsule 140 and the mounting bracket ( 130 to receive the force in the opposite direction from each other so that the fixing member 160 provided on the mounting bracket 130 deforms the tearing plate 170 to absorb the impact energy.

Such a conventional shock absorbing steering column has a problem in that the manufacturing cost increases as the capsule and the tearing plate are used to absorb the shock when collapsing, and the manufacturing time increases as the manufacturing process increases.

In order to solve this problem, the present invention forms a groove or a protrusion in the mounting bracket and the plate bracket instead of the capsule and the tearing plate used as the shock absorber of the steering column, and then presses and fixes the protrusion in the groove to the steering column. The purpose is to provide absorption of the impact load by the relative movement of the grooves and projections when impact energy is applied.

In order to achieve the above object, the present invention includes a mounting bracket for supporting the outer tube and fixed to the vehicle body and surrounding the outer tube, one side is open and the other side is configured to include a steering wheel bracket coupled to the mounting bracket, The plate bracket is pressed and fixed to the mounting bracket, and a protrusion is formed on the inner circumferential surface of the guide portion of the mounting bracket, and a shock absorbing type is formed at both ends of the plate bracket corresponding to the protrusion. Provide steering device.

In addition, the present invention is a steering apparatus configured to include a mounting bracket for supporting the outer tube to be fixed to the vehicle body and the outer tube and one side is open and the other side is coupled to the mounting bracket, the plate bracket is the It is pressed and fixed to the mounting bracket, and the projections are formed on both ends of the plate bracket, the guide bracket of the mounting bracket provides a shock absorbing steering apparatus, characterized in that the groove is formed corresponding to the projection. .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 2A is a partial perspective view of a mounting bracket and a plate bracket according to an embodiment of the present invention, and FIG. 2B is a cross-sectional view of the mounting bracket and plate bracket according to the first, second and third embodiments of the present invention, and FIGS. 2A and FIG. As shown in FIG. 2B, the first embodiment of the present invention surrounds the first mounting bracket 220 and the outer tube 120 to support and fix the outer tube 120 (see FIG. 1) to the vehicle body. And the other side is the first plate bracket 210 coupled to the first mounting bracket 220, the first protrusion 260 formed on the inner peripheral surface of the guide portion 230 of the first mounting bracket 220, the first plate bracket 210 The first groove 270 formed to correspond to the first protrusion 260 is formed at both end portions of

The first mounting bracket 220 serves to fix the outer tube 120 to the vehicle body, and fixing grooves 240 are provided in the wing portions 245 provided at both sides of the first mounting bracket 220. It is coupled to the vehicle body by a fastening member provided through the fixing groove 240.

The body portion 225 of the first mounting bracket 220 is a flat " c " shape having both guide portions 230 formed on both sides thereof, and a wing portion 245 provided at one end of the guide portion 230. It is formed integrally with).

The first protrusion 260 is formed long on the inner circumferential surface of the guide part 230 to be fitted into the first grooves 270 formed at both ends of the first plate bracket 210.

Although the length of the first protrusion 260 is shown to be smaller than the width of the wing 245 in the embodiment of the present invention, the length of the protrusion 260 is larger than the width of the wing 245 according to the absorption amount of the impact load. It may be formed long.

The first plate bracket 210 surrounds the outer tube 120 while one side is open and the other side is coupled to the first mounting bracket 220.

In this case, the first plate bracket 210 is coupled to the first mounting bracket 220 by pressing the first groove 270 and the first protrusion 260 by pressing.

Tilt holes 250 are provided in the first plate bracket 210 to enable tilting of the steering column 100 (see FIG. 1), and at both ends, first protrusions 260 formed in the first mounting bracket 220. 1), the first groove 270 is formed.

Since the first protrusion 260 formed on the first mounting bracket 220 is press-fitted into and fixed to the first groove 270 formed on the first plate bracket 210, the first plate bracket 210 at the time of collision When collapsing along the guide portion 230 of the first mounting bracket 220 is to absorb the impact load.

3A is a perspective view showing a first groove formed in the plate bracket according to the first and second embodiments of the present invention, and FIG. 3B is a perspective view showing a second groove formed in the plate bracket according to the third embodiment of the present invention. 3C is a perspective view showing a first protrusion formed on an inner circumferential surface of a mounting bracket according to the first embodiment of the present invention, and FIG. 3D is a second view formed on an inner circumferential surface of a mounting bracket according to the second and third embodiments of the present invention. 3A, 3B, 3C, and 3D, a first groove 270 or a second groove 320 is formed in the first plate bracket 210 and is formed in a perspective view. The first mounting bracket 220 may have a first protrusion 260 or a second protrusion 310.

The first grooves 270 are formed at both ends of the first plate bracket 210, respectively, and the first plate bracket 210 is guided along the guide portion 230 of the first mounting bracket 220 when it is collabsed. Since the impact load must be properly absorbed while moving, it is preferable that both sides of the first groove 270 are open to move along the first protrusion 260 and the second protrusion 310. The length of the 270 is formed to be equal to the width of the first plate bracket 210.)

In addition, since the first protrusion 260 or the second protrusion 310 is press-fitted into the first groove 270, the width of the first groove 270 is the maximum width of the first protrusion 260 and the second protrusion ( It is preferably formed smaller than the width of (310).

The first protrusion 260 according to the first embodiment of the present invention is formed in a shape that continues to be formed by a predetermined length with the same width and gradually decreases in width. It may be provided in a shape that gradually decreases in width toward the side.

At this time, the portion formed with the same width is formed to be appropriately larger than the width of the first groove 270 is pressed into the first groove 270.

As described above, when the first protrusion 260 is formed, a collision load is applied to the first groove 270 and the first protrusion 260 when the steering column is collapsed while the portion having the same width moves along the first groove 270. Absorbed by the friction between), and then the first groove 270 is free to move when the first groove 270 is out of the portion formed with the same width of the first protrusion 260 to smoothly collapsing the steering column.

The length of the portion continuously formed by a certain length with the same width of the first protrusion 260 is preferably appropriately selected in consideration of the impact load that must be absorbed when the steering column is collapsed.

That is, the longer the portion continuously formed by a predetermined length with the same width of the first protrusion 260, the greater the impact load absorbed when collapsing.

According to the third embodiment of the present invention, second grooves 320 may be formed at both ends of the first plate bracket 210, and the second grooves 320 may be formed of the first plate bracket as shown in FIG. 3B. It is formed narrower than the width of 210.

In this case, the shape of the protrusion that is press-fitted into the second groove 320 may be preferably the second protrusion 310 illustrated in FIG. 3C.

Shock absorption by the second groove 320 and the second protrusion 310 is normally applied to the second groove 320 when the second protrusion 310 is pressed into the second column 320 when the impact is applied to the steering column ( 310 is to absorb the shock while leaving the second groove (320).

4A is a cross-sectional view of a mounting bracket and a plate bracket according to a fourth embodiment of the present invention. As shown in FIG. 4A, a third groove 440 is formed in the second mounting bracket 410 and the second plate bracket is shown in FIG. 4A. A third protrusion 430 is formed at 420. (The second mounting bracket 410 and the second plate bracket 420 are compared with the first mounting bracket 220 and the first plate bracket 210. Only the third groove 440 and the third protrusion 430 are different, and the other configuration is the same.)

4B is a perspective view showing a third protrusion formed in the plate bracket according to the fourth and fifth embodiments of the present invention, and FIG. 4C shows a third groove formed in the inner circumferential surface of the mounting bracket according to the fourth embodiment of the present invention. 4D is a perspective view illustrating a fourth groove formed in the inner circumferential surface of the mounting bracket according to the fifth embodiment of the present invention, and as shown in FIGS. 4B, 4C, and 4D, respectively, the third protrusion 430. Are formed at both end portions of the second plate bracket 420, and the third groove 440 or the fourth groove 450 is formed on the inner circumferential surface of the guide portion 230 of the second mounting bracket 410. 430 is formed.

The third protrusions 430 respectively formed at both ends of the second plate bracket 420 are pressed into the third groove 440 or the fourth groove 450 formed in the second mounting bracket 410 and collide with each other. Since it absorbs a collision load while moving along the third groove 440 or the fourth groove 450, it is preferable that the minimum width of the third groove 440 or the width of the fourth groove 450 is appropriately formed. (In other words, the minimum width of the third groove 440 or the width of the fourth groove 450 must be appropriately smaller than the width of the third protrusion 430 to absorb the impact load.)

In the third embodiment of the present invention, the third groove 440 formed in the second mounting bracket 410 is continuously formed by a predetermined length with the same width and is formed in an elongated shape, which is the third protrusion 430. This is to continuously absorb the impact load while moving the portion formed with the same width of the third groove 440, and then move freely when leaving the portion formed with the same width so as to smoothly perform the culps.

In addition, as shown in the fifth embodiment of the present invention, the width of the fourth groove 450 may be equally formed from one side to the other side, and when the fourth groove 450 is formed as described above, When the third protrusion 430 is moved along the fourth groove 450 to continuously absorb the impact load.

The third groove 440 and the fourth groove 440 may be smoothly separated when the third protrusion 430 absorbs the impact load when it is collapsed and then is separated from the third groove 440 or the fourth groove 450. 450) is preferably provided in a shape in which the depth gradually becomes shallower from one side to the other side.

In the embodiment of the present invention, the cross section of the first groove 270, the second groove 440, the third groove 450, and the first protrusion 260, the second protrusion 310, and the third protrusion 430 is a semicircle. Although illustrated as having a shape, the present invention is not necessarily limited thereto, and the cross section may have various shapes such as a quadrangular shape and a trapezoid shape as long as the protrusion may be fixed by being pressed into the groove.

The above description exemplarily illustrates the technical idea of the present invention, and those skilled in the art may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

As described above, according to the present invention, instead of the capsule and the tearing plate used as the shock absorbing device of the steering column, a groove or a protrusion is formed in the mounting bracket and the plate bracket, respectively, and then steering is performed by pressing and fixing the protrusion in the groove. When impact energy is applied to the column, by absorbing the impact load by the relative movement of the groove and the projection can reduce the manufacturing cost and reduce the manufacturing process.

Claims (6)

In the steering apparatus configured to include a mounting bracket for supporting the outer tube and fixed to the vehicle body and a plate bracket surrounding the outer tube and one side is open and the other side is coupled to the mounting bracket, The plate bracket is press-fitted to the mounting bracket and is fixed to the inner circumferential surface of the guide part of the mounting bracket, and protrusions are formed at both ends of the plate bracket to form grooves corresponding to the protrusion, and the protrusions have the same width. It continues to be formed by a certain length and gradually decreases in width, so that when the steering column is collapsed, a portion having the same width moves along the groove to absorb the impact load by friction between the groove and the protrusion. The shock absorbing steering device, characterized in that the groove is free to move if the groove leaves the portion formed with the same width of the protrusion. The method of claim 1, The groove is shock absorbing steering device, characterized in that the depth is gradually formed shallower from one side to the other side. delete In the steering apparatus configured to include a mounting bracket for supporting the outer tube and fixed to the vehicle body and a plate bracket surrounding the outer tube and one side is open and the other side is coupled to the mounting bracket, The plate bracket is pressed and fixed to the mounting bracket, and protrusions are formed at both ends of the plate bracket, and grooves are formed on the inner circumferential surface of the guide bracket of the mounting bracket to correspond to the protrusion, and the grooves have the same width. It continues to be formed by a certain length and gradually increases in width, so that when the steering column is collapsed, the protrusion moves to a portion having the same width of the groove while absorbing the impact load and then leaving the portion having the same width. Shock-absorbing steering device, characterized in that the surface can move freely. The method of claim 4, wherein The groove is shock absorbing steering device, characterized in that the depth is gradually formed shallower from one side to the other side. delete

Images