KR20140115641A - Telescopic bush coupling structure for steering apparatus - Google Patents

Telescopic bush coupling structure for steering apparatus Download PDF

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Publication number
KR20140115641A
KR20140115641A KR1020130030448A KR20130030448A KR20140115641A KR 20140115641 A KR20140115641 A KR 20140115641A KR 1020130030448 A KR1020130030448 A KR 1020130030448A KR 20130030448 A KR20130030448 A KR 20130030448A KR 20140115641 A KR20140115641 A KR 20140115641A
Authority
KR
South Korea
Prior art keywords
telescopic
inner tube
hollow
bush
tube
Prior art date
Application number
KR1020130030448A
Other languages
Korean (ko)
Inventor
오진석
Original Assignee
주식회사 한라홀딩스
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 한라홀딩스 filed Critical 주식회사 한라홀딩스
Priority to KR1020130030448A priority Critical patent/KR20140115641A/en
Publication of KR20140115641A publication Critical patent/KR20140115641A/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
    • 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
    • B62D1/184—Mechanisms for locking columns at selected positions
    • 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
    • B62D1/187—Steering columns yieldable or adjustable, e.g. tiltable with tilt adjustment; with tilt and axial adjustment
    • 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
    • B62D1/195—Yieldable supports for the steering column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/12—Steering gears mechanical of rack-and-pinion type

Abstract

The present invention relates to a telescopic bush coupling structure for a steering apparatus, which can facilitate an assembly of a telescopic bush when assembling the steering apparatus, also which can prevent the telescopic bush from being reversely assembled. The present invention includes: an inner tube to cover around a steering shaft; the telescopic bush which is coupled to the inner tube and formed with a hollow on a length side; an outer tube to cover around the inner tube; and a fastening pin which is fastened to penetrate the outer tube and the hollow portion of the telescopic bush simultaneously and connect the outer tube to move along the hollow portion of the telescopic bush.

Description

TECHNICAL FIELD [0001] The present invention relates to a telescopic bushing coupling structure for a steering apparatus,

The present invention relates to a telescopic bushing structure for a steering apparatus, and more particularly, to a telescopic bushing structure for a steering apparatus, which facilitates assembly of a telescopic bushing when assembling a steering apparatus, .

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.

Further, the steering apparatus of the automobile may add a tilt or telescope function for the convenience of the driver. The tilt function adjusts the fixed angle of the steering wheel. The telescopic function adjusts the angle of the two hollow tubes Which is capable of extending and contracting in the axial direction. The steering shaft and the steering column are collapsed at the time of a collision of an automobile to absorb shock 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 a block diagram of a conventional telescopic steering apparatus.

1, a steering wheel 101, a steering shaft 103 connected to the steering wheel 101, a steering column 105 surrounding the steering shaft 103, a steering column 105, A gear ratio conversion device 109 formed below the input angle sensor 107, a first motor 111 for driving the gear ratio conversion device 109, A first motor position sensor 113 provided to the first motor 111, an output angle sensor 115 provided below the gear ratio conversion device 109, a vehicle speed sensor Pinion mechanism portion 121 formed below the gear ratio conversion device 109 for converting the rotational motion of the steering shaft 103 into linear motion of the rack bar 119 and a rack- A second motor 123 for supplying a steering assist power to the first motor position sensor 113 and the output angle sensor 115 and an electronic control unit 125 for receiving various signals from the input angle sensor 107, ).

Such a conventional telescopic steering apparatus includes an inner tube surrounding the steering shaft 103 and an outer tube surrounding the inner tube, and an inner tube slidingly inserted into the outer tube is slid in the axial direction to displace the steering column It is common to include a telescopic bush inserted between the outer peripheral surface of the inner tube and the inner peripheral surface of the outer tube to facilitate sliding.

Therefore, it is necessary to develop a method for efficiently assembling telescopic bushes in the production line of the telescopic steering apparatus.

The present invention developed by such conventional necessity is intended to provide a telescopic bushing structure for a steering apparatus that facilitates assembly of a telescopic bush.

It is another object of the present invention to provide a telescopic bushing structure for a steering apparatus capable of preventing reverse assembly during assembly of a telescopic bush.

According to an aspect of the present invention, there is provided a steering apparatus comprising: an inner tube that surrounds a steering shaft; a telescopic bush which is coupled to the inner tube and has a hollow portion formed on a longitudinal surface thereof; an outer tube that surrounds the inner tube; And a fastening pin which is fastened to the hollow portion so as to be coupled therewith to allow the outer tube to move along the hollow portion of the telescopic bush.

And a connection part formed on the outer circumferential surface of the inner tube and having a hollow hole formed at a side thereof, the telescopic bush is fitted into the hollow hole of the connection part, and the hollow part communicates with the hollow hole.

And hooks formed on both ends of the telescopic bushes to protrude from both ends of the telescopic bush, and engaging grooves formed in the surface of the connecting portion so as to be connected to both ends of the hollow hole to fit the hooks.

It is preferable that the stopper protrusion is formed at both ends of the hollow portion of the telescopic bush.

According to the present invention as described above, since the telescopic bushing is coupled to the connecting portion formed in the outer periphery of the inner tube, the telescopic bushing can be easily assembled and the durability of the telescopic bushing can be improved.

The present invention has the effect of eliminating the cause of failure caused by misassembly of the telescopic bushing by preventing the reverse assembly of the telescopic bush by forming the hook part in the telescopic bush.

1 is a block diagram of a conventional telescopic steering apparatus.
2 is an enlarged view of a portion where an outer tube and an inner tube are interconnected in a telescopic steering apparatus according to an embodiment of the present invention.
FIG. 3 is a partially enlarged view of a telescopic steering apparatus according to an embodiment of the present invention to show that the outer tube is separated and a telescopic bush is installed in the inner tube.
4 is a plan view showing only the telescopic bush in FIG.
5 is a front view of Fig.
FIG. 6 is a partially enlarged view of a telescopic steering apparatus according to another embodiment of the present invention, in which the outer tube is separated and a telescopic bush is installed in the inner tube.
7 is a plan view showing only the telescopic bush in FIG.
8 is a front view of Fig.
9 is a view showing a telescopic steering wheel installed at a connecting portion in a telescopic steering apparatus according to another embodiment of the present invention.

The telescopic steering apparatus to which the present invention is applied includes a steering wheel, a steering shaft connected to the steering wheel, a steering column surrounding the steering shaft, an input angle sensor formed at the lower end of the steering column, A rack-pinion mechanism portion provided below the gear ratio conversion device for converting the rotational motion of the steering shaft into a linear motion of the rack bar, and a rack-pinion mechanism portion provided below the gear ratio conversion device, Device.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a telescopic structure for a steering apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 2 is an enlarged view of a portion where an outer tube and an inner tube are connected to each other in a telescopic steering apparatus according to an embodiment of the present invention. FIG. 3 is a perspective view of a telescopic steering apparatus according to an embodiment of the present invention. Is a partially enlarged view to show that a telescopic bush is installed on the inner tube in isolation.

2 to 3, the telescopic bushing structure for a steering apparatus according to the present invention includes an inner tube 130 which surrounds the steering shaft 103 and an inner tube 130 which is coupled to the inner tube 130, The outer tube 150 surrounding the inner tube 130 and the hollow tube 141 of the telescopic tube 140 are formed to penetrate the inner tube 130 and the outer tube 150, And a coupling pin 160 coupled to the outer tube 150 so as to move along the hollow portion 141 of the telescopic bush 140.

The steering shaft 103 is connected to a steering wheel (not shown) of an automobile or the like so that a steering force generated by a driver operating the steering wheel is transmitted to the rack pinion mechanism to finally change the directions of both wheels of the automobile .

The inner tube 130 is attached to the outer circumferential surface of the steering shaft 103 so as to realize a telescopic steering apparatus.

The telescopic bushing 140 is coupled to the inner tube 130 to guide the outer tube 150 to be telescopically connected to the inner tube 130.

The outer tube 150 surrounds the inner tube 130 and is telescopically connected to the inner tube 130 so that the steering wheel connected to the upper end of the outer tube 150 is connected to the inner tube 130 by the length of the steering shaft 103 So that a smooth steering operation can be performed.

The coupling pin 160 is inserted into the hollow tube 141 of the outer tube 150 and the inner tube 130 of the telescopic tube 140 so that the outer tube 150 is telescoped to the inner tube 130. [ So that the outer tube 150 can move along the length of the hollow portion 141 in a state of being connected to the inner tube 150. At this time, stopper protrusions 143 protrude from both ends of the inner circumference of the hollow portion 141 so that the outer tube 150 moves along the length of the hollow portion 141, Damage caused by collision with both ends of the inner circumference of the bushing 140 can be prevented.

Here, a connecting portion 131 protrudes from the outer circumferential surface of the inner tube 130. The connection part 131 is preferably formed on the lower side of the inner tube 130 as shown in FIG. 2, and a hollow hole 133 is formed through the side surface of the connection part 131. The hollow hole 133 is tightly coupled with the telescopic bush 140. Meanwhile, a step (not shown) may be formed on the inner circumferential surface of the hollow hole 133 so that the telescopic bush 140 can be seated. When the outer tube 150 is coupled to the inner tube 130, the coupling pin 160 is connected to the outer tube 150 And the hollow portion 141 of the telescopic bush 140 and the hollow hole 133 of the connecting portion 131. [

Fig. 4 is a plan view showing only the telescopic bush in Fig. 3, and Fig. 5 is a front view of Fig.

4 to 5, the circumferential surface of the telescopic bush 140 is formed to have the same length as the circumference of the inner circumferential surface of the hollow hole 133 so as to be fitted into the hollow hole 133 And the shape of the outer circumferential surface is preferably the same as the shape of the inner circumferential surface of the hollow hole 133. However, in the embodiment of the present invention, it is understood that the telescopic bush 140 has a round shape in a rectangular shape and a hollow portion 141 in the center.

FIG. 6 is a partially enlarged view of a telescopic steering apparatus according to another embodiment of the present invention, in which the outer tube is separated and a telescopic bush is installed in the inner tube. FIG. 7 is a cross- Fig. 8 is a front view of Fig. 7; Fig.

6 to 8, hooks 145 are protruded from both ends of the outer circumference of the telescopic bush 140. As shown in FIG. The hook portion 145 is formed to protrude from both ends of the outer circumference of the telescopic bush 140 and is fitted into the connection portion 140 together with the telescopic bush 140. The hook portion 145, It is possible to easily distinguish between the forward and reverse directions of the telescopic tube 140, thereby preventing the telescopic bush 140 from being assembled in the reverse direction. An engaging groove 135 is formed on the surface of the connecting portion 131 so that the hook portion 145 is fitted into the connecting portion 131. The engaging groove 135 is connected to the hollow hole 133. [

FIG. 9 is a view illustrating a telescopic steering wheel installed at a connecting portion in a telescopic steering apparatus according to another embodiment of the present invention.

9, the coupling groove 135 is recessed on the surface of the coupling portion 131 so as to be connected to both ends of the hollow hole 133, and the hook portion 145 The hook portion 145 is formed to have a sufficient length to be inserted into the hook portion 145 and bent at a right angle along the other side of the connecting portion 131 so as to be inserted into the hook portion 145 formed at a right angle.

The telescopic bushing structure for the steering apparatus according to the present invention allows the telescopic bush 140 to be coupled to the connection portion 131 formed in the outer periphery of the inner tube 130, And the hook portion 145 is formed on the telescopic bush 140 so as to prevent the reverse assembly of the telescopic bush 140. As a result of the misassembly of the telescopic bush 140 There is an effect of eliminating the cause of the occurrence of a failure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes and modifications may be made by those skilled in the art.

130: inner tube 131:
133: hollow hole 135: engaging groove
140: Telescopic Bush 141: Hollow portion
143: stopper projection 145:
150: outer tube 160: fastening pin

Claims (4)

An inner tube surrounding the steering shaft;
A telescopic tube coupled to the inner tube and having a hollow portion formed on a length thereof;
An outer tube surrounding the inner tube;
And a fastening pin fastened to the hollow tube of the outer tube and the hollow portion of the telescopic bushing so as to connect the outer tube so that the outer tube can move along the hollow portion of the telescopic bush. The method according to claim 1,
And a connecting portion protruding from the outer circumferential surface of the inner tube and having a hollow hole formed in a side surface thereof,
Wherein the telescopic bush is fitted in the hollow hole of the coupling portion, and the hollow portion is in communication with the hollow hole. The method of claim 2,
A hook portion protruding from both ends of the telescopic bush;
And a coupling groove recessed to be connected to both ends of the hollow hole in the surface of the coupling portion to fit the hook portion. The method according to any one of claims 1 to 3,
And a stopper projection protruding from both ends of the hollow portion of the telescopic bushing.
KR1020130030448A 2013-03-21 2013-03-21 Telescopic bush coupling structure for steering apparatus KR20140115641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130030448A KR20140115641A (en) 2013-03-21 2013-03-21 Telescopic bush coupling structure for steering apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130030448A KR20140115641A (en) 2013-03-21 2013-03-21 Telescopic bush coupling structure for steering apparatus

Publications (1)

Publication Number Publication Date
KR20140115641A true KR20140115641A (en) 2014-10-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130030448A KR20140115641A (en) 2013-03-21 2013-03-21 Telescopic bush coupling structure for steering apparatus

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KR (1) KR20140115641A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160070198A (en) * 2014-12-09 2016-06-20 주식회사 만도 Steering column for vehicle
CN107428362A (en) * 2015-03-26 2017-12-01 日立汽车系统株式会社 Electric power-assisted steering apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160070198A (en) * 2014-12-09 2016-06-20 주식회사 만도 Steering column for vehicle
CN107428362A (en) * 2015-03-26 2017-12-01 日立汽车系统株式会社 Electric power-assisted steering apparatus
CN107428362B (en) * 2015-03-26 2019-07-12 日立汽车系统株式会社 Electric power steering apparatus

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