KR20120045792A - Steering column for vehicle - Google Patents

Steering column for vehicle Download PDF

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Publication number
KR20120045792A
KR20120045792A KR1020100107591A KR20100107591A KR20120045792A KR 20120045792 A KR20120045792 A KR 20120045792A KR 1020100107591 A KR1020100107591 A KR 1020100107591A KR 20100107591 A KR20100107591 A KR 20100107591A KR 20120045792 A KR20120045792 A KR 20120045792A
Authority
KR
South Korea
Prior art keywords
vehicle
steering column
shock absorbing
absorbing member
telescope
Prior art date
Application number
KR1020100107591A
Other languages
Korean (ko)
Inventor
문성주
정영석
Original Assignee
주식회사 만도
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020100107591A priority Critical patent/KR20120045792A/en
Publication of KR20120045792A publication Critical patent/KR20120045792A/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
    • B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B60G2206/8209—Joining by deformation
    • B60G2206/82092—Joining by deformation by press-fitting
    • 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

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

Abstract

PURPOSE: A steering column of vehicle improves the collision performance by comprising the structure absorbing the collision energy during car collision. CONSTITUTION: A steering column of vehicle comprises a inner tube(310), an outer tube(320), and impact absorbing members(330). The inner tube comprises the telescope guide hole(315) formed into the axial direction. The outer tube is inserted and coupled in the outer circumference of the inner tube. The outer tube comprises coupling holes(325) passing through the inner circumference and outer circumference of the part corresponding to the telescope guide hole. The impact absorbing members are coupled with the coupling holes and supported in both sides of telescope guide hole while the telescope is operated. The impact absorbing members is damaged by the telescope guide hole when the vehicle crash. The impact absorbing members absorbs the collision energy.

Description

Steering Column for Vehicle

The present invention relates to a steering column of a motor vehicle. More specifically, in the steering column of the vehicle, telescopic operation is possible without the need for additional parts, and at the same time, the second bolt absorbs the collision energy compared to the prior art by absorbing the impact while the tilt bolt breaks and deforms the inner tube during the collision of the vehicle. It is related to the steering column of the automobile that can continue to improve the collision performance, reduce the number of parts, as well as the assembly process and cost.

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

As shown in these figures, the steering column 100 of the vehicle according to the prior art is a steering shaft 102, the upper end is connected to the steering wheel (not shown) and the lower end is connected to the rack-pinion mechanism portion (not shown), steering Inner tube 110 surrounding shaft 102, outer tube 120 surrounding inner tube 110, teles bush 125 inserted between inner tube 110 and outer tube 120, outer tube While supporting the outer circumferential surface of the 120 is connected to 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 the upper mounting bracket through the fixing member 160 is formed with a long hole (195) serving as a guide that is collapsing It is configured to include a tearing plate 170 is fixed to (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 is fixed to the upper mounting bracket 130 through the fixing member 160 is formed with a fixing hole 202 on one side, the other end of the capsule (through the fixing means 150) ( A fastening hole 204 is formed to be fastened to 140, and a tearing groove 210 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 210 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, in the case of the steering column of the related art, there was a structural problem in which a primary collision energy absorbing part such as a capsule and a secondary collision energy absorbing part such as a tearing plate were required separately. There was a problem such as an increase in the number of parts and work process for assembling.

In addition, the shock absorbing method by breaking of the tearing groove, 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, and the deformation is vertically generated. There was a problem that the left and right deviation of the load caused by the interference with the component occurs.

Accordingly, the present invention has been made in view of the above-mentioned background, in the steering column of the vehicle, it is possible to operate the tele without additional parts, and at the same time has a structure that absorbs the collision energy when the collision of the vehicle has a collision compared to the prior art The energy absorption is sustained to improve the collision performance, and the purpose is to reduce the number of parts, the assembly process and the cost.

In order to achieve the above object, an embodiment of the present invention includes an inner tube having a telescope guide hole formed in an axial direction so as to define an operation section during telescope operation of a steering column, and an insertion coupling to an outer circumferential surface of the inner tube. An outer tube having a fastening hole penetrating an inner circumferential surface and an outer circumferential surface of a portion corresponding to the telescope guide hole, and coupled to the fastening hole and supported at both ends of the telescope guide hole when the telescope is operated It provides a steering column of a vehicle configured to include a shock absorbing member that breaks by the telescope guide hole or breaks the telescope guide hole and absorbs collision energy during a collision.

As described above, according to the present invention, the teles operation can be performed without the need for additional parts, and at the same time, by absorbing the collision energy during the collision of the vehicle, the collision energy absorption is continued compared to the prior art, thereby improving the collision performance. This reduces the assembly costs and reduces the assembly process and costs.

1 is a side view showing a steering column of a vehicle according to the prior art,
2 is a perspective view showing a tearing plate of a steering column of a vehicle according to the prior art;
3 is an exploded perspective view showing a part of a steering column of a vehicle according to an embodiment of the present invention;
4 and 5 and 6 are cross-sectional views showing a part of a steering column of a vehicle according to an embodiment of 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".

Figure 3 is an exploded perspective view showing a part of the steering column of the vehicle according to an embodiment of the present invention, Figures 4 and 5 and 6 are sectional views showing a part of the steering column of the vehicle according to an embodiment of the present invention.

As shown in these drawings, the steering column of a vehicle according to an embodiment of the present invention includes an inner telescoping guide hole 315 formed in an axial direction so as to define an operating section during the telescope operation of the steering column. Outer tube 320 having a fastening hole 325 which is inserted into and coupled to an outer circumferential surface of the inner tube 310 and an inner circumferential surface of the inner tube 310 and passes through an inner circumferential surface and an outer circumferential surface of a portion corresponding to the telescope guide hole 315. And, coupled to the fastening hole 325, are supported at both ends of the telescope guide hole 315 during telescope operation, and are damaged by the telescope guide hole 315 or the telescope when a vehicle collides. And a shock absorbing member 330 that breaks the guide hole 315 and absorbs collision energy.

Steering column of the vehicle according to an embodiment of the present invention is a telescope operation using the outer tube 320, the inner tube 310, the shock absorbing member 330, etc., which are components of the steering column without additional parts And it characterized in that it has a structure for absorbing the collision energy of the vehicle.

The inner tube 310 is inserted into the outer tube 320 to surround the steering shaft 305 which transmits the steering force when the steering wheel is operated by the driver and to be telescopic operation sliding with the outer tube 320. The outer tube 320 into which the 310 is inserted is fixed to the vehicle body of the vehicle by a mounting bracket.

The inner tube 310 is formed in a hollow shape and is inserted into the inner circumferential surface of the outer tube 320 so as to slide in the axial direction during the operation of the telescope of the driver. Since the hole 315 is formed, the telescope operating distance is limited by the shock absorbing member 330 coupled to the fastening hole 325 of the outer tube 320.

The outer tube 320 formed in a hollow shape has a collision energy absorbing structure together with the inner tube 310 so that the inner tube 310 can absorb collision energy during teles movement and collaps movement during the collision of the vehicle. Doing.

The outer tube 320 surrounds the inner tube 310 inserted therein and is coupled to an outer circumferential surface thereof, and a fastening hole in which the collision absorbing member 330 is coupled to a position corresponding to the telescope guide hole 315 of the inner tube ( 325 is provided.

That is, at one side of the outer circumferential surface of the outer tube 320, a fastening hole 325 penetrating the inner circumferential surface and the outer circumferential surface is formed at a position corresponding to the telescope guide hole 315, and impacts the fastening hole 325 in a radial direction. The absorbing member 330 is coupled to and supported at both ends of the telescope guide hole 315 to limit the operation distance during the telescope operation of the steering column.

The shock absorbing member 330 is coupled to the fastening hole 325 provided on one side of the outer circumferential surface of the outer tube 320 to be supported by the telescope guide hole 315 of the inner tube 310 during the telescope operation of the steering column. The tube 320 and the inner tube 310 are fixed.

The shock absorbing member 330 is damaged by the end of the telescope guide hole 315 while the inner tube 310 collapsing in the axial direction during the collision of the vehicle, or vice versa. While absorbing the collision energy of the car.

That is, the shock absorbing member 330 is usually used to limit the telescope operating distance by being supported by the telescope guide hole 315, but when the collision of the vehicle occurs, the shock absorbing member 330 is broken or Breaking the inner tube 310 while collapsing in the axial direction to reduce the impact energy delivered to the driver.

The shock absorbing member 330 is press-fitted into the fastening hole 325 of the outer tube 320, or a screw portion is formed on the outer circumferential surface of the body portion 330a of the shock absorbing member 330, thereby The fastening hole 325 may be screwed and fixed, and may be formed of a metal material or an engineering plastic so that the fastening hole 325 may be fastened while maintaining a rigidity of a certain level or higher so as to be damaged when a load of a predetermined amount or more is transmitted.

The shock absorbing member 330 is made of polyacetal (POM), polyamide (PA), polycarbonate (PC), polyimide (PI), polybutylene terephthalate (PBT), and polypropylene in engineering plastics ( PP), polystyrene (PS), polyphenylene oxide (PPO), acrylonitrile butadiene styrene (ABS) is preferably formed of one or more materials selected from the group consisting of.

In addition, the shock absorbing member 330 and the fastening hole 325 may be provided with two or more, respectively, depending on the impact characteristics of the vehicle, when provided with two or more, each fastening hole 325 is spaced apart in the axial direction It can be combined to be arranged, or can be arranged to be spaced apart in the circumferential direction.

That is, FIGS. 3 to 6 exemplarily show that the shock absorbing member 330 and the fastening hole 325 are provided in two, respectively, as shown in FIGS. 3 and 4. It is formed to be spaced apart and the shock absorbing member 330 is coupled to the fastening hole 325 to absorb the collision energy, as shown in Figure 6 fastening hole 325 is formed spaced in the circumferential direction and the fastening hole Shock absorbing members 330 may be coupled to 325, respectively.

When the fastening holes 325 are spaced apart in the circumferential direction and the shock absorbing member 330 is coupled, the telescope guide hole 315 is also formed to be spaced apart in the circumferential direction of the inner tube 310 as shown in FIG. 6. The fastening hole 325 and the shock absorbing member 330 are spaced apart and arranged in the circumferential direction so as to correspond to the telescope guide hole 315, and in this case, the fastening hole 325 and the shock absorbing member 330. Is coupled to symmetrical positions with respect to the steering axis 305 is advantageous in terms of collision energy absorption characteristics.

In this invention, the collision absorbing member 330 is coupled to the fastening hole 325 of the outer tube 320 and is damaged by the inner tube, or the inner tube 310 is damaged and absorbs the collision energy. By changing the cross-sectional size or material of the shock absorbing member 330 or the number of couplings of the shock absorbing member 330 according to the collision characteristics, appropriate tuning for each vehicle is facilitated.

For example, by forming two or more fastening holes 325 of the outer tube 320 and combining only one shock absorbing member 330 or two according to the vehicle type, it may be possible to respond to the collision characteristics of each vehicle type.

On the other hand, the shock absorbing member 330 may be coupled via a support block 340 that is in close contact with the outer tube 320 when coupled with the fastening hole 325, in this case the shock absorbing member 330 is a support block Passed through the 340 is coupled to the fastening hole (325).

The support block 340 is provided with a through hole 340a through which the body portion 330a of the shock absorbing member 330 passes, and a seating groove 340b on which the head 330b of the shock absorbing member 330 is seated. The shock absorbing member 330 supports the coupling force when the shock absorbing member 330 is coupled to the fastening hole 325, and absorbs the impact load transmitted to the shock absorbing member 330 during the collision of the vehicle.

The support block 340 is formed of a metal material or engineering plastic, such as the shock absorbing member 330, polyacetal (POM), polyamide (PA), polycarbonate (PC), polyimide (PI) in the engineering plastic At least one material selected from the group consisting of polybutylene terephthalate (PBT), polypropylene (PP), polystyrene (PS), polyphenylene oxide (PPO), and acrylonitrile butadiene styrene (ABS). It is good to be formed.

According to the present invention having the structure and shape as described above, it is possible to operate teles without the need for additional parts, and at the same time, by absorbing the collision energy during the collision of the vehicle, the collision energy absorption is continued compared to the prior art, thereby improving the collision performance. This reduces the number of parts, reduces the assembly process and costs.

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.

305: steering shaft 310: inner tube
315: telescope guide hole 320: outer tube
325: fastening hole 330: shock absorbing member
340: support block

Claims (8)

An inner tube having a telescope guide hole formed in the axial direction so as to define an operation section during the telescope operation of the steering column;
An outer tube inserted into and coupled to an outer circumferential surface of the inner tube and having a fastening hole penetrating an inner circumferential surface and an outer circumferential surface of a portion corresponding to the telescope guide hole; And
The shock absorbing member is coupled to the fastening hole and is supported at both ends of the telescope guide hole during telescope operation, and is damaged by the telescope guide hole when the vehicle collides, or the telescope guide hole is damaged and absorbs collision energy. ;
Steering column of the vehicle is configured to include. The method of claim 1,
The impact absorbing member is a steering column of the vehicle, characterized in that the screw coupling or press-fitted to the fastening hole. The method of claim 2,
The shock absorbing member is polyacetal (POM), polyamide (PA), polycarbonate (PC), polyimide (PI), polybutylene terephthalate (PBT), polypropylene (PP), polystyrene ( PS), poly phenylene oxide (PPO), acrylonitrile butadiene styrene (ABS) steering column of a vehicle, characterized in that formed of one or more materials selected from the group consisting of. The method of claim 1,
Each of the fastening holes and the shock absorbing member is provided with two or more, and each fastening hole is arranged in the axial direction spaced apart from the steering column of the vehicle, characterized in that coupled to the shock absorbing member. The method of claim 1,
Two or more telescope guide holes are spaced apart in the circumferential direction, and two or more fastening holes and shock absorbing members are provided, respectively, and each of the fastening holes and the shock absorbing members are arranged to correspond to the telescope guide holes. Steering column of the vehicle, characterized in that coupled. The method of claim 5, wherein
The fastening hole and the shock absorbing member are steering columns of the vehicle, characterized in that coupled to be arranged in a position symmetrical with respect to the steering axis. The method of claim 1,
The shock absorbing member is a steering column of the vehicle, characterized in that the shock absorbing member is penetrated through the support block through a support block that is in close contact with the outer peripheral surface of the outer tube when the coupling hole. The method of claim 7, wherein
The support block is polyacetal (POM), polyamide (PA), polycarbonate (PC), polyimide (PI), polybutylene terephthalate (PBT), polypropylene (PP), polystyrene (PS) Steering column of a vehicle, characterized in that formed of at least one material selected from the group consisting of polyphenylene oxide (PPO), acrylonitrile butadiene styrene (ABS).
KR1020100107591A 2010-11-01 2010-11-01 Steering column for vehicle KR20120045792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100107591A KR20120045792A (en) 2010-11-01 2010-11-01 Steering column for vehicle

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KR1020100107591A KR20120045792A (en) 2010-11-01 2010-11-01 Steering column for vehicle

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KR20120045792A true KR20120045792A (en) 2012-05-09

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KR1020100107591A KR20120045792A (en) 2010-11-01 2010-11-01 Steering column for vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230311974A1 (en) * 2021-02-11 2023-10-05 Ford Global Technologies, Llc Handwheel Actuator Modular Interface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230311974A1 (en) * 2021-02-11 2023-10-05 Ford Global Technologies, Llc Handwheel Actuator Modular Interface

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