KR20120042214A - Collision energy absorbable steering column for vehicle - Google Patents

Collision energy absorbable steering column for vehicle Download PDF

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Publication number
KR20120042214A
KR20120042214A KR1020100103795A KR20100103795A KR20120042214A KR 20120042214 A KR20120042214 A KR 20120042214A KR 1020100103795 A KR1020100103795 A KR 1020100103795A KR 20100103795 A KR20100103795 A KR 20100103795A KR 20120042214 A KR20120042214 A KR 20120042214A
Authority
KR
South Korea
Prior art keywords
tube
shaft
locking jaw
steering column
bush
Prior art date
Application number
KR1020100103795A
Other languages
Korean (ko)
Other versions
KR101411244B1 (en
Inventor
우명남
Original Assignee
주식회사 만도
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Filing date
Publication date
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Priority to KR1020100103795A priority Critical patent/KR101411244B1/en
Publication of KR20120042214A publication Critical patent/KR20120042214A/en
Application granted granted Critical
Publication of KR101411244B1 publication Critical patent/KR101411244B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/003—Dampers characterised by having pressure absorbing means other than gas, e.g. sponge rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2410/00—Constructional features of vehicle sub-units
    • B60Y2410/102—Shaft arrangements; Shaft supports, e.g. bearings

Abstract

The present invention relates to a shock absorbing steering column of an automobile.
According to the present invention, a steering wheel is coupled to one side and a first tube is coupled to the other side, and a second locking jaw is formed on the inner circumferential surface of the shaft around the shaft and the first tube, and a first locking jaw is formed on the outer circumferential surface thereof. It provides a shock-absorbing steering column of a vehicle, characterized in that it comprises a tube and a first support portion supported on the first locking jaw, and a collaps bush formed with a second support portion supported on the second locking jaw.
As described above in detail, after the shaft is coupled to the first tube, the fixing groove and the through hole are fixed with the plastic injection molding, the first supporting part is supported on the first locking jaw of the shaft and the second locking jaw of the second tube is fixed. 2 By fixing the collars bush to support the support, the shaft is slid into the interior of the first tube during the collision of the car, and the plastic injection part is damaged, and at the same time, the deformation portion of the collars bush which is axially curled together with the shaft is damaged. By absorbing the shock, secondary collision energy absorption is continued compared to the prior art, so that the collision performance is improved, the number of parts and the cost can be reduced, and the effect of eliminating the left and right deviation of the collision energy absorption due to interference with surrounding components. There is.

Description

Collision Energy Absorbable Steering Column for Vehicle

The present invention relates to a shock absorbing steering column of an automobile. More specifically, after the shaft is coupled to the first tube, the fixing groove and the through hole are fixed with the plastic injection molding, the first supporting part is supported on the first locking jaw of the shaft, and the second supporting portion is attached to the second locking jaw of the second tube. By fixing the Collabs bush to be supported, the shaft is slid into the interior of the first tube in the event of a collision of the vehicle, which damages the plastic injection molding, and at the same time the deformation of the Collabs Bush, which is axially collapsed with the shaft, is deformed and absorbed. Secondary impact energy absorption is continued compared to the prior art, so the impact performance is improved, the number of parts and the cost can be reduced, and the impact absorption type of the car that can eliminate the left and right deviation of the collision energy absorption due to interference with surrounding parts. It is about steering column.

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 fixed to the steering shaft by being coupled to the vehicle body through the bracket. .

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 case of a car collision. 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, the impact that the driver exerts on the steering wheel is different according to the driver's condition and the driving condition of the vehicle. For example, when the speed of the car is fast, the impact is 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's seat belt is worn and the air bag is operated.

Therefore, in order to cope with such a situation, a steering apparatus having a capsule for absorbing primary impact energy and a tearing plate for absorbing secondary impact energy has been developed and used.

1 is a side view showing a shock absorbing steering column of a vehicle according to the prior art, Figure 2 is a perspective view showing a tearing plate of the shock absorbing steering column of a vehicle according to the prior art.

As shown in these figures, the shock absorbing steering column 100 of a vehicle according to the prior art has a steering shaft 102 having an upper end connected to a steering wheel (not shown) and a lower end connected to a rack-pinion mechanism part (not shown). , The inner tube 110 surrounding the steering shaft 102, the outer tube 120 surrounding the inner tube 110, the teles bush 125 inserted between the inner tube 110 and the outer tube 120, Support the outer circumferential surface of the outer tube 120, but the upper mounting bracket 130 and the lower mounting bracket 180, the lower mounting bracket 180 and the fixing bolt 185 coupled to the vehicle body 104 through the capsule 140 Collabs bracket 190 and one end is fixed to the capsule 140 by the fixing means 150 and the other end is formed through the fixing member 160 and the other end is formed with a long hole (195) that serves as a guide that is connected and collapsing It is configured to include a tearing plate 170 that is fixed to the mounting bracket 130.

Such steering column 100 is 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 and the steering column 100 is contracted in the impact movement direction. The upper mounting bracket 130 is moved together with the outer tube 120 in the collapsing direction to absorb the primary load. That is, when an impact is applied, the upper mounting bracket 130 is separated from the capsule 140, and the upper mounting bracket 130 is easily separated from the vehicle body 104 and moves in the collapsing direction, which is the impact movement direction, to the steering column 100. It contracts along the long hole 195 of the collabs bracket 190.

In addition, the tearing plate 170 of the shock absorbing steering column according to the prior art is formed with a fixing hole 202 on one side is coupled to the upper mounting bracket 130 through the fixing member 160, fixed to the other end A fastening hole 204 is formed to be fastened to the capsule 140 through the means 150, and a tearing groove 206 having a groove having a predetermined depth is provided.

When the steering column 100 is contracted and the upper mounting bracket 130 and the capsule 140 move relative to each other and the upper mounting bracket 130 moves downward when the vehicle collides, the tearing plate 170 is the capsule 140. And the force in the opposite direction from each other from the upper mounting bracket 130. Accordingly, the tearing groove 206 formed on the tearing plate 170 is torn along the moving direction of the upper mounting bracket 130 to absorb the impact. That is, as the fixing member 160 provided on the upper mounting bracket 130 deforms the tearing plate 170, the secondary impact energy is absorbed.

However, as described above, the shock absorbing method by the breaking of the tearing groove 206, which forms a groove of a constant depth when the secondary load is absorbed by the tearing plate after the primary load is absorbed by the capsule, is complicated to manufacture the product. Due to the large number of parts, the work process increases and deformation occurs vertically, causing a left and right deviation of the load due to interference with surrounding parts.

The present invention has been made to solve the above problems, in the impact-absorbing steering column of the vehicle, the secondary impact energy absorption is continued compared to the prior art when the collision of the vehicle, the collision performance is improved and the number of parts and cost is reduced The purpose is to reduce the left and right deviation of the collision energy absorption due to interference with the surrounding components.

In order to achieve the object of the present invention, a steering wheel is coupled to one side and a first tube is coupled to the other side, and a first locking jaw is formed on an outer circumferential surface, and the shaft and the first tube are wrapped around the shaft. Shock absorbing steering column of the vehicle, characterized in that it comprises a second tube formed with a locking jaw, a first support portion supported on the first locking jaw, and a collaps bush formed with a second support portion supported on the second locking jaw. To provide.

As described above, according to the present invention, after the shaft is coupled to the first tube, the fixing groove and the through hole are fixed with the plastic injection molding, and the first supporting part is supported on the first locking jaw of the shaft and the second locking of the second tube is performed. By fixing the collars bush to support the second support on the jaw, the deformation of the collars bush which axially collapses with the shaft at the same time as the shaft is slid into the interior of the first tube during the collision of the vehicle, resulting in damage to the plastic injection. By absorbing the shock by breaking and deforming, the secondary impact energy absorption is continued compared to the prior art, which improves the collision performance, reduces the number of parts and reduces the cost, and eliminates the left and right deviation of the collision energy absorption due to interference with surrounding components. It can be effective.

1 is a side view showing a shock absorbing steering column of a vehicle according to the prior art;
2 is a perspective view showing a tearing plate of a shock absorbing steering column of a vehicle according to the prior art;
3 is an exploded perspective view showing a part of a shock absorbing steering column of a vehicle according to the present invention;
4 is a cross-sectional view showing a part of an impact absorbing steering column of a vehicle according to the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though 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 addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

In the detailed description of the present invention, for convenience of description, the right side in the drawing, which is a direction in which the steering wheel is coupled, is referred to as an upper side, and the left side in the drawing is referred to as a lower side.

Figure 3 is an exploded perspective view showing a part of the impact-absorbing steering column of the vehicle according to the present invention, Figure 4 is a cross-sectional view showing a part of the impact-absorbing steering column of the vehicle according to the present invention.

3 and 4, the shock absorbing steering column of the vehicle according to the present invention combines the shaft 320 to the first tube 330, and then the fixing groove 324 and the through hole 332 to the plastic injection molding ( 400, the first support part 351 is supported on the first locking step 322 of the shaft 320, and the second support part 352 is disposed on the second locking step 312 of the second tube 310. By fixing the collars bush 350 to be supported, the shaft 320 is slid into the interior of the first tube 330 in the event of a collision of the vehicle so that the plastic injection molding 400 is damaged and at the same time along with the shaft 320 in the axial direction. The deformable portion 356 of the collapsing bush 350 to be collapsed is broken and deformed to absorb shocks.

The shaft 320 has a steering wheel coupled to one side thereof, and a first locking jaw 322 is formed on an outer circumferential surface thereof, and one or more fixing grooves 324 are formed on the other outer circumferential surface thereof.

The first locking step 322 is formed to be stepped so that the diameter is reduced on the outer peripheral surface of the shaft 320, the fixing groove 324 is formed on the other outer peripheral surface of the shaft 320.

The fixing groove 324 is preferably formed at a predetermined distance away from the other end of the shaft 320, is formed to be symmetrical to one or more axis centers at regular intervals in the longitudinal direction or at least one radially equal intervals to be formed Can be.

At least one through hole 332 is formed on one side of the first tube 330 to correspond to the fixing groove 324, and the shaft 320 is press-fitted to one side of the first tube 330.

The through hole 332 is preferably formed smaller than the diameter of the fixing groove 324, the position where the through hole 332 is formed is fixed in the state in which the shaft 320 is fitted to the first tube 330 It is preferably formed at a position that can coincide with the groove 324.

The second tube 310 surrounds the shaft 320 and the first tube 330, and a second locking jaw 312 is formed on the inner circumferential surface of the second tube 310 and the second tube 310 and the shaft 320. Collabs bush 350 is located between.

The collapsing bush 350 has a deformation portion 356 having a larger outer diameter from the first support portion 351 and a first support portion 351 on one side, and a guide portion having a constant diameter from an end portion of the deformation portion 356 ( 354 and a second support 352, which is an end of the guide 354.

The collapsing bush 350 may be provided with one or more slit slit 358 or grooves in the deformable portion 356 from the first support 351. 358) or the number of the grooves can be adjusted, and at least three equal intervals in the circumferential direction are most preferable.

The present invention is a structure that absorbs the secondary collision energy of the vehicle by using the shaft 320, the first tube 330, the second tube 310 and the Collabs bush 350, which is a component of the steering column, Figure 4 As shown in the figure, after the coupling of the shaft 320 to the first tube 330 by fixing the fixing groove 324 and the through hole 332 with a plastic injection molding 400, the shaft 320 The first support part 351 of the Collabs bush 350 is supported on the first engaging jaw 322 of the) and the guide part 354 of the Collabs bush 350 is supported on the second tube 310. The shaft 320 is inserted along the inner circumferential surface of the second tube 310 to support the second support part 352 of the Collabs bush 350 on the second locking jaw 312 of the second tube 310. The collapsing bush 350 is fixed to the outside of the) and the inside of the second tube 310.

If a steering wheel (not shown) is installed at one side of the shaft 320 and a rack-pinion mechanism part (not shown) is connected to the lower side and the impact energy is transmitted when the vehicle is driving, the other side of the shaft 320 and the 1 As one side of the tube 330 is fixed and the plastic injection molding 400 is broken, the shaft 320 is slid and compressed into the first tube 330 to absorb shock energy and at the same time the first of the shaft 320 Since the deformable portion 356 of the collabs bush 350 supported by the locking jaw 322 and the second locking jaw 312 of the second tube 310 is broken and deformed, the impact energy is absorbed while being pushed downward.

That is, the shaft 320 is broken while the upper body of the driver impacts the steering wheel during the front collision of the vehicle, and the plastic injection molded part 400 is broken while the other side of the shaft 320 and one side of the first tube 330 are fixed. The shaft 320 is impacted in a state in which the collabs bush 350 is fixed to the second tube 310 by being slid and compressed into the first tube 330 to absorb the impact energy and supported by the second support 352. The first supporting portion 351 supported by the first locking jaw 322 is pushed while moving in the collapsing direction, which is the moving direction, and the deformation portion 356 of the collars bush 350 in which the slit 358 is formed to facilitate deformation. ) Is damaged or deformed, so the impact energy is absorbed.

According to the present invention having such a structure and shape, after coupling the shaft to the first tube and fixing the fixing groove and the through-hole with a plastic injection molding, the first support is supported on the first locking jaw of the shaft and the second tube 2 By fixing the Collaps Bush so that the second support is supported on the latching jaw, the shaft is slid into the interior of the first tube when the vehicle collides, so that the plastic injection part is damaged and the Collabs Bush collapsed in the axial direction together with the shaft. As the deformable part is deformed and absorbs the shock, secondary collision energy absorption is continued compared to the prior art, so that the collision performance is improved, the number of parts and the cost can be reduced, and the left and right deviation of the collision energy absorption due to interference with surrounding parts The effect can be eliminated.

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more.

In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be included, unless otherwise stated, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms commonly used, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be construed in an ideal or excessively formal sense unless explicitly defined in the present invention.

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 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 protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

310: second tube 312: second locking jaw
320: shaft 322: first locking jaw
324: fixing groove 330: the first tube
332: through hole 350: Collabs Bush
351: first support part 352: second support part
354: guide portion 356: deformation portion
358: slit

Claims (4)

A steering wheel coupled to one side and a first tube coupled to the other side, and a shaft having a first locking jaw formed on an outer circumferential surface thereof;
A second tube surrounding the shaft and the first tube and having a second locking step formed on an inner circumferential surface thereof; And
A collapsing bush formed with a first support part supported by the first locking step and a second support part supported by the second locking step;
Shock absorbing steering column of the vehicle comprising a. The method of claim 1,
The collapsing bush is a shock absorbing steering column of the vehicle, characterized in that the outer diameter from the first support portion and the guide portion having a constant diameter is formed at the opposite end of the first support portion. The method of claim 2,
And said deformable portion is at least one axial slit formed from said first support portion. The method of claim 1,
The shaft has one or more fixing grooves formed on the other outer circumferential surface, and one or more through holes are formed on one side of the first tube to correspond to the fixing grooves to fix the fixing grooves and the through holes with plastic injection molding. Shock-absorbing steering column for cars.
KR1020100103795A 2010-10-25 2010-10-25 Collision Energy Absorbable Steering Column for Vehicle KR101411244B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100103795A KR101411244B1 (en) 2010-10-25 2010-10-25 Collision Energy Absorbable Steering Column for Vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100103795A KR101411244B1 (en) 2010-10-25 2010-10-25 Collision Energy Absorbable Steering Column for Vehicle

Publications (2)

Publication Number Publication Date
KR20120042214A true KR20120042214A (en) 2012-05-03
KR101411244B1 KR101411244B1 (en) 2014-07-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9139220B2 (en) 2013-04-18 2015-09-22 Hyundai Motor Company Steering system of automobile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990019889A (en) * 1997-08-30 1999-03-25 양재신 Shock Absorption Structure of Vehicle Steering Column
KR19990016148U (en) * 1997-10-21 1999-05-15 배길훈 Shock Absorber of Automotive Steering Column
KR20050055964A (en) * 2003-12-09 2005-06-14 주식회사 만도 A shock absorbing structure of steering column for an automobile
KR20080008010A (en) * 2006-07-19 2008-01-23 현대자동차주식회사 Impact-absorbtion structure of steering column forvehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9139220B2 (en) 2013-04-18 2015-09-22 Hyundai Motor Company Steering system of automobile

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Publication number Publication date
KR101411244B1 (en) 2014-07-01

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