KR101411237B1 - Steering Column for Vehicle and Steering Apparatus for Vehicle having The Same - Google Patents

Steering Column for Vehicle and Steering Apparatus for Vehicle having The Same Download PDF

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Publication number
KR101411237B1
KR101411237B1 KR1020100033184A KR20100033184A KR101411237B1 KR 101411237 B1 KR101411237 B1 KR 101411237B1 KR 1020100033184 A KR1020100033184 A KR 1020100033184A KR 20100033184 A KR20100033184 A KR 20100033184A KR 101411237 B1 KR101411237 B1 KR 101411237B1
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KR
South Korea
Prior art keywords
coupled
steering
cam member
tilt
steering column
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KR1020100033184A
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Korean (ko)
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KR20110113869A (en
Inventor
박상현
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주식회사 만도
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Priority to KR1020100033184A priority Critical patent/KR101411237B1/en
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Publication of KR101411237B1 publication Critical patent/KR101411237B1/en

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)

Abstract

The present invention relates to a steering column of an automobile and a steering apparatus for an automobile having the steering column, and according to the present invention, since the engagement position of the tilt bolt is positioned on the central axis of the steering shaft, The adjustment lever is also moved upward so that the adjustment lever does not hit the knee of the driver in the event of an automobile collision, so that the assembly can be simplified. Also, when a large load is transmitted from the road surface to the steering column during running of the vehicle or a torsional load The tilt lock is not released even if it is transmitted, so that the steering stability at the time of driving the vehicle can be secured.

Description

TECHNICAL FIELD [0001] The present invention relates to a steering column for a vehicle and a steering apparatus for the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering column of an automobile and a steering apparatus for an automobile having the same. More specifically, since the engagement position of the tilt bolt is positioned on the central axis of the steering shaft, bending does not occur at the time of collision of the vehicle and the adjustment lever is also moved upward by the engagement position of the tilt bolt, The tilt lock can not be released even if a large load is transmitted from the road surface to the steering column at the time of traveling or a torsional load at the time of collision is transmitted to the steering column of the vehicle, The present invention relates to a steering apparatus for a vehicle.

BACKGROUND ART [0002] Generally, an automobile steering apparatus is a device for changing a traveling direction of a vehicle according to a driver's will, and is a device for assisting a driver to advance a vehicle in a desired direction by arbitrarily changing a turning center of a front wheel of the vehicle to be.

In this vehicle steering apparatus, the steering force generated by the driver operating the steering wheel is transmitted to the rack pinion mechanism through the steering shaft and eventually changes the direction of both wheels.

In addition, a steering apparatus of a car may add a telescope or a tilt function for the sake of the driver's convenience. The tilt apparatus is a device for adjusting the fixed angle of the steering wheel. Which is formed by inserting two hollow tubes so as to be able to elongate and contract, and has a function of collapsing the steering shaft and the steering column at the time of collision of an automobile and absorbing impact energy.

Therefore, the steering apparatus is divided into a telescopic type or a tilt type, depending on the function, and in some cases, a tilt function can be added to the telescopic type steering system. Through this function, the driver can smoothly perform the steering operation by adjusting the degree of protrusion or tilting angle of the steering wheel according to his / her elongation or body shape.

1 is an exploded perspective view showing a part of an automotive steering column according to a conventional technique.

1, the steering column of an automobile according to the prior art includes an outer tube 100 that receives the steering shaft 175, an inner tube 170 which is drawn into the outer tube, a lower bracket 170 that fixes the inner tube to the vehicle body, An upper bracket 105 installed on the upper side of the outer tube 100 to be fixed to the vehicle body, a distance bracket 180 integrally fixed to the outer tube 100 and formed with a telescopic hole 185, A tilt bracket 150 integrally formed with the bracket 105 and having a long tilt hole 110 formed therein, a fixed gear 145 formed on the outer surface of the tilt bracket 150, A tilt bolt 130 passing through the tilt elongated hole 110; a cam 135 engaged with the movable gear 140; a washer (not shown) for fixing the cam 135 and the adjusting lever 115; 125, a nut 120, a gear spring 142 positioned between the movable gear 140 and the fixed gear 145, .

When the adjustment lever 115 is tightened, the tilting bracket 150 is narrowed to apply an urging force to the outer tube 100 so that the outer tube 100 and the outer tube 100 are pressed against each other. The tilting or telescopic operation is not performed when the inner tube 170 is tightly pressed by the pressing force and conversely when the adjusting lever 115 is released, the pressing force of the outer tube 100 and the inner tube 170 disappears, It is a principle to be made.

The telescopic operation is completed by tightening the adjustment lever 115 after changing the position of the tilt bolt 130 along the telescopic hole 185 formed in the distance bracket 180 after releasing the adjustment lever 115. [

The tilting operation is completed by tightening the adjusting lever 115 after changing the position of the tilt bolt 130 along the tilt long hole 110 after releasing the adjusting lever 115. [

The outer tube 100 and the steering shaft 175 are fixed while the adjusting lever 115 is locked and the outer tube 100 and the inner tube 170 are fixed by the cam 135 when the adjusting lever 115 is released. The tilting center 160 can be tilted with respect to the tilting center 160 or the steering column can be extended and contracted in the axial direction.

The steering column of such an automobile has a problem that the bending of the tilt bolt occurs at a time of collision of the vehicle because the coupling position of the tilt bolt is spaced from the central axis of the steering shaft by a certain distance in the downward direction.

Further, since the adjustment lever is also engaged with the tilt bolt in a state in which the adjustment lever is moved downward, there is a problem that the adjustment lever hits the knee of the driver when the vehicle collides.

Further, when a torsion load is transmitted from a road surface to a steering column during running of the automobile under a large load or a collision, there is a problem that the tilt lock of the steering column is released and the stability of the driver is critical.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems and it is an object of the present invention to provide a tilt bolt which is positioned on the center axis of a steering shaft, The tilt lock is not released even if a large load is transmitted from the road surface to the steering column or the torsional load at the time of collision is transmitted to the steering column during running of the vehicle, And to secure the steering stability in the running of the vehicle.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided an inner tube comprising: a hollow outer tube inserted and coupled to an outer circumferential surface of an inner tube; A ring bolt having an annular shape coupled to an outer circumferential surface of the outer tube and having fastening portions at both ends of an outer circumferential surface thereof; A tilt bracket having opposing plates formed to penetrate the fastening portions of the ring bolts; A cam member supported on an outer surface of the plate and press-coupled with the tilt bracket; A hinge member having a hinge portion for rotatably supporting the cam member at both ends of a body portion inserted into the cam member, the fastening portion of the ring bolt passing through the body portion; And a tightening member coupled to the fastening portion of the ring bolt at the outer side of the hinge member and tightening the cam member coupled to the hinge portion toward the plate.

According to the present invention, since the engagement position of the tilt bolt is positioned on the central axis of the steering shaft, bending does not occur at the time of collision of the vehicle, and the adjustment lever is also moved upward by the engagement position of the tilt bolt, So that the assembly can be simplified.

Further, even when a large load is transmitted from the road surface to the steering column during running of the vehicle, or when the torsional load at the time of the collision is transmitted, the tilt lock is not released and the steering stability at the time of driving the vehicle can be ensured.

1 is an exploded perspective view showing a part of an automotive steering column according to a conventional technique,
2 is a perspective view showing a part of a steering column according to an embodiment of the present invention,
3 is an exploded perspective view showing a part of a steering column according to an embodiment of the present invention,
4 is a perspective view showing a cam member of a steering column according to an embodiment of the present invention,
5 is a perspective view showing a hinge member of a steering column according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in 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.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

FIG. 2 is a perspective view showing a part of a steering column according to an embodiment of the present invention, FIG. 3 is an exploded perspective view showing a part of a steering column according to an embodiment of the present invention, and FIG. FIG. 5 is a perspective view illustrating a hinge member of a steering column according to an embodiment of the present invention. FIG.

As shown in these figures, the steering column of an automobile according to an embodiment of the present invention includes a hollow outer tube 210 inserted into and coupled to the outer circumferential surface of the inner tube 220; A ring bolt 230 having an annular shape coupled to an outer circumferential surface of the outer tube 210 and having fastening portions 235 at both ends of an outer circumferential surface thereof; A tilt bracket 240 formed with a plate 243 facing each other so that the fastening portion 235 of the ring bolt 230 penetrates and is engaged; A cam member 250 supported on an outer surface of the plate 243 to be coupled to the tilt bracket 240 so as to be pressed thereto; A hinge portion 265 is provided at both ends of a body portion 263 inserted into the cam member 250 so as to allow the cam member 250 to rotate and a fastening portion 235 of the ring bolt 230 A hinge member 260 passing through the body portion 263; And a fastening member 234 which is coupled to the fastening portion 235 of the ring bolt 230 at the outer side of the hinge member 260 and fastens the cam member 250 coupled to the hinge portion 265 to the plate 243, (270).

The steering column is configured such that the ring bolt 230 serving as a conventional tilt bolt is positioned on the central axis of the steering shaft 175 and the cam member 250 is rotated in a direction to prevent the tilt lock from being released even when a large load is transmitted to the steering column A pressing force is applied to the outer tube 210 so as to be in close contact with the inner tube 220.

The inner tube 220 has a hollow cylindrical shape surrounding the steering shaft 175. The outer circumferential surface of the upper end is inserted into the outer tube 210 and the lower end of the inner tube 220 is coupled to the mounting bracket 290.

The outer tube 210 has a hollow cylindrical shape, and its lower end is inserted and coupled on the outer circumferential surface of the inner tube 220 to be slid when the telescopic operation is performed.

A ring bolt 230 fastened together with an adjustment lever 115 is tightly coupled to a tilt bracket 240 at an outer peripheral surface of the outer tube 210. The outer tube 210 and the plate 243 of the tilt bracket 240 The plate 243 of the tilt bracket 240 restrained by the ring bolt 230 and the control lever 115 can be inserted into the guide block 280 when the adjustment lever 115 is tightened, A pressing force is applied to the block 280 or the outer tube 210 so that the outer tube 210 is pressed against the inner tube 220.

The ring bolt 230 has an annular shape into which the outer tube 210 is inserted and has a control lever 115 or a tightening member 270 for applying a tilting or telescopic operation to one side and the other side of the outer peripheral surface of the body 233, And a fastening portion 235 having threads and valleys formed on the outer circumferential surface of the cylindrical shape.

The engaging portions 235 are formed such that the imaginary line connecting the center lines of these engaging portions 235 is aligned with the center of the steering shaft 175 so that the pressing force transmitted to the bracket of the plate 243, And acts on the center of the shaft 175.

The tilt bracket 240 is formed with a plate 243 facing each other such that the coupling portion 235 of the ring bolt 230 passes through the tilt hole 245 and the cam member 250 is connected to the tilt bracket 240 And the tilt bracket 240 is tightened and tightened by fastening between the fastening portion 235 and the tightening member 270. [

The cam member 250 includes a rotation support body 253 and an elastic support body 255. The rotation support body 253 supports the tilt bracket 240 when the hinge member 260 of the hinge member 260 rotates about its axis. Shaped curved surface having a larger radius in both rotational directions from the hinge portion 265 so that the distance from the plate 243 of the steering column 263 increases. When the torsion load or the torsion load is transmitted, the rotary support 253 is rotated to further tighten the tilt bracket 240, thereby preventing the tilt lock from being released even under abnormal conditions.

That is, even in a steering column that is firmly fixed by the locking of the adjusting lever 115, when a vehicle collides, a twisting rotation is generated by a large impact load. At this time, When the elliptical rotary support 253 rotates about the hinge 265, the rotary support 253 farther from the hinge 265 presses the tilting bracket 240.

The elastic supporter 255 is engaged with the rotating supporter 253 and is supported by the plate 243 of the tilt bracket 240 by being stretched or narrowed in the rotating direction of the supporter 253 by elastic force, And is firmly supported so as not to rotate in the normal state due to elastic deformation when the fastening member 270 is fastened with the fastening member 235.

The elastic supporter 255 is bent in the outer lateral direction of the tilt bracket 240 so as to be seated on the outer surface of the tilt bracket 240 while being expanded in the rotating direction of the rotary support 253 by elastic force, As shown in Fig.

Therefore, when the cam member 250 is engaged with the tilt bracket 240, when the elastic supporter 255 is seated on the outer surface of the plate 243 and pressed in the engaging direction, the elastic supporter 255 is spread in both directions The ring bolt 230 and the hinge member 260 are coupled to each other by the tightening member 270.

The hinge member 260 is provided with a hinge portion 265 which is coupled to both ends of a body portion 263 inserted into the cam member 250 so that the rotary support 253 of the cam member 250 can rotate And the fastening portion 235 of the ring bolt 230 penetrates the body portion 263 through the through hole 267 so that the fastening member 270 is supported by the body portion 263 and the ring bolt 230 Of the fastening portion 235.

The hinge member 260 and the cam member 250 exert an urging force to tighten the tilt bracket 240 when the fastening member 270 is fastened to the body portion 263 while being supported on the outer side of the hinge member 260. [

An engaging groove 257 engaging with the hinge portion 265 is formed on the inner surface of the rotary support 253 so as to facilitate the engagement between the cam member 250 and the hinge member 260, And is formed so as to be wider from the groove portion toward the open end portion.

The guide block 280 is closely inserted between the outer circumferential surface of the outer tube 210 and the plate 243 of the tilt bracket 240 so that the ring bolt 230 is tilted A pressing force to narrow both plates 243 of the bracket 240 is applied to or released from the outer tube 210 to apply a tilt or telescopic operation of the steering column.

The guide block 280 may be formed with a coating of a low friction material on the inner surface contacting the outer tube 210 so as to reduce the frictional force with the outer tube 210 which is slid when the telescopic operation is performed.

In this guide block 280, a coupling hole 285 is formed so that the coupling portion 235 of the ring bolt 230 is inserted therethrough.

The guide block 280 is engaged with the adjustment lever 115 on the side of the fastening portion 235 of the ring bolt 230 so that both plates 243 of the tilt bracket 240 are narrow The pressing force is transferred to the outer tube 210.

In addition, in order to more easily transfer the pressing force to the outer tube 210, the outer tube 210 is provided on both sides of the outer circumferential surfaces of both sides where the guide block 280 is coupled, And the inner side surface of the guide block 280 may be formed in a flat shape so as to be in close contact with the mounting surface 215 of the outer tube 210. [

The steering column of an automobile according to an embodiment of the present invention includes a rack bar coupled to a steering wheel and assembled to a vehicle body and coupled with the steering column to steer the wheels, Thereby constituting a device.

Here, the steering column is the same as that described above, and a detailed description thereof will be omitted.

According to the present invention having such a structure and configuration, since the engagement position of the tilt bolt is positioned on the central axis of the steering shaft, bending does not occur at the time of collision of the vehicle and the adjustment lever is also moved upward by the engagement position of the tilt bolt The adjustment lever is prevented from bumping against the driver's knee when the vehicle collides with the vehicle, thereby facilitating assembly.

Further, even when a large load is transmitted from the road surface to the steering column during running of the vehicle, or when the torsional load at the time of the collision is transmitted, the tilt lock is not released and the steering stability at the time of driving the vehicle can be ensured.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of 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 construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

210: outer tube 220: inner tube
230: ring bolt 235: fastening part
240: tilt bracket 243: plate
250: cam member 253:
255: elastic supporter 257: engaging groove
260: hinge member 263:
265: hinge part 270: fastening member
280: guide block

Claims (10)

A hollow outer tube inserted and coupled to an outer peripheral surface of the inner tube;
A ring bolt having an annular shape coupled to an outer circumferential surface of the outer tube and having fastening portions at both ends of an outer circumferential surface thereof;
A tilt bracket having opposing plates formed to penetrate the fastening portions of the ring bolts;
A cam member supported on an outer surface of the plate and adapted to press the tilt bracket;
A hinge member having a hinge portion for rotatably supporting the cam member at both ends of a body portion inserted into the cam member, the fastening portion of the ring bolt passing through the body portion; And
And a tightening member coupled to the fastening portion of the ring bolt at the outer side of the hinge member and tightening the cam member coupled to the hinge portion toward the plate,
Wherein the cam member
A rotation supporting body formed in a curved shape having a radius larger than that of the tilt bracket in the rotation direction from the hinge portion in the both side direction, when the hinge portion is rotated about the axis; And
An elastic supporter coupled to the rotatable supporter and supported by the plate of the tilt bracket while being opened or narrowed in the rotation direction of the rotatable supporter by an elastic force;
Wherein the steering column comprises: delete The method according to claim 1,
Wherein the rotary support has an inner side surface formed with a coupling groove for coupling the hinge portion and the coupling groove is formed so as to be wider from a circular groove portion where the hinge portion is seated to an open end portion. The method according to claim 1,
The ring bolt is pressed against or released from the outer tube by a pressing force that narrows both plates of the tilt bracket when the adjusting lever is tightened or loosened, And a guide block for applying a tilt or telescopic operation of the steering column. 5. The method of claim 4,
Wherein the outer tube has a flat mounting surface for surface contact with the guide block on both sides of the outer circumferential surface of both sides of the guide block to which the guide block is coupled, Wherein the steering column is formed in a substantially cylindrical shape. 1. A steering apparatus for an automobile comprising a steering column coupled to a steering wheel and assembled to a vehicle body, and a rack bar coupled with the steering column for steering the wheel,
The steering column includes:
A hollow outer tube inserted and coupled to an outer peripheral surface of the inner tube;
A ring bolt having an annular shape coupled to an outer circumferential surface of the outer tube and having fastening portions at both ends of an outer circumferential surface thereof;
A tilt bracket having opposing plates formed to penetrate the fastening portions of the ring bolts;
A cam member supported on an outer surface of the plate and adapted to press the tilt bracket;
A hinge member having a hinge portion for rotatably supporting the cam member at both ends of a body portion inserted into the cam member, the fastening portion of the ring bolt passing through the body portion; And
And a tightening member coupled to the fastening portion of the ring bolt at the outer side of the hinge member and tightening the cam member coupled to the hinge portion toward the plate,
Wherein the cam member
A rotation supporting body formed in a curved shape having a radius larger than that of the tilt bracket in the rotation direction from the hinge portion in the rotation direction of the hinge portion when the hinge portion is rotated about the axis; And
An elastic supporter coupled to the rotatable supporter and supported by the plate of the tilt bracket while being opened or narrowed in the rotation direction of the rotatable supporter by an elastic force;
And a steering angle sensor for detecting steering angle of the steering wheel. delete The method according to claim 6,
Wherein the rotary support has an inner side surface formed with a coupling groove to which the hinge portion is coupled and the coupling groove is formed to be wider from a circular groove portion where the hinge portion is seated to an open end portion. The method according to claim 6,
The ring bolt is pressed against or released from the outer tube by a pressing force that narrows both plates of the tilt bracket when the adjusting lever is tightened or loosened, And a guide block for applying a tilt or telescopic operation of the vehicle. 10. The method of claim 9,
Wherein the outer tube has a flat mounting surface for surface contact with the guide block on both sides of the outer circumferential surface of both sides of the guide block to which the guide block is coupled, And the steering angle of the steering wheel is changed.
KR1020100033184A 2010-04-12 2010-04-12 Steering Column for Vehicle and Steering Apparatus for Vehicle having The Same KR101411237B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100033184A KR101411237B1 (en) 2010-04-12 2010-04-12 Steering Column for Vehicle and Steering Apparatus for Vehicle having The Same

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Application Number Priority Date Filing Date Title
KR1020100033184A KR101411237B1 (en) 2010-04-12 2010-04-12 Steering Column for Vehicle and Steering Apparatus for Vehicle having The Same

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KR20110113869A KR20110113869A (en) 2011-10-19
KR101411237B1 true KR101411237B1 (en) 2014-06-24

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100614196B1 (en) 2005-06-21 2006-08-22 남양공업주식회사 Positional adjustment device for steering column
KR20070109372A (en) * 2006-05-11 2007-11-15 주식회사 만도 Tilting and telescopic steering apparatus having rotatable locking member
JP2009083827A (en) 2007-10-03 2009-04-23 Fuji Kiko Co Ltd Steering column device
KR20100020600A (en) * 2008-08-13 2010-02-23 주식회사 만도 Steering column for vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100614196B1 (en) 2005-06-21 2006-08-22 남양공업주식회사 Positional adjustment device for steering column
KR20070109372A (en) * 2006-05-11 2007-11-15 주식회사 만도 Tilting and telescopic steering apparatus having rotatable locking member
JP2009083827A (en) 2007-10-03 2009-04-23 Fuji Kiko Co Ltd Steering column device
KR20100020600A (en) * 2008-08-13 2010-02-23 주식회사 만도 Steering column for vehicle

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