KR20170104281A - Tie rod of steering device for vehicle - Google Patents

Tie rod of steering device for vehicle Download PDF

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Publication number
KR20170104281A
KR20170104281A KR1020160027134A KR20160027134A KR20170104281A KR 20170104281 A KR20170104281 A KR 20170104281A KR 1020160027134 A KR1020160027134 A KR 1020160027134A KR 20160027134 A KR20160027134 A KR 20160027134A KR 20170104281 A KR20170104281 A KR 20170104281A
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KR
South Korea
Prior art keywords
ball joint
inner ball
nut
washer
circumferential surface
Prior art date
Application number
KR1020160027134A
Other languages
Korean (ko)
Inventor
심규봉
박정철
Original Assignee
주식회사 센트랄
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 센트랄 filed Critical 주식회사 센트랄
Priority to KR1020160027134A priority Critical patent/KR20170104281A/en
Publication of KR20170104281A publication Critical patent/KR20170104281A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/20—Links, e.g. track rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/16—Arrangement of linkage 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)

Abstract

The purpose of the present invention is to provide a tie rod of a steering device for a vehicle. The tie rod can conveniently and rapidly perform a coupling operation of an inner ball joint and an outer ball joint while maintaining a toe-in adjustment value after adjusting toe-in of a vehicle. To achieve a purpose, the tie rod of the present invention comprises: an inner ball joint (100) having one side part connected to a gear box of a steering device for a vehicle, and having a male screw unit (112) formed on the outer circumferential surface of the other side part thereof; an outer ball joint (200) having a female screw unit (211) formed on the inner circumferential surface of one side part thereof to allow the male screw unit (112) of the inner ball joint (100) to be inserted thereinto and screwed therewith, and having the other side part connected to a knuckle side; a nut having a female screw unit (311) formed on the inner circumferential surface thereof to be screwed with the male screw unit (112) of the inner ball joint (100), and coupling the inner ball joint (100) and the outer ball joint (200); washers (400, 400, 400) disposed between the outer ball joint (200) and the nut (300); and a rotation interconnection means for allowing the inner ball joint (100) and the outer ball joint (200) to rotate together at the same angle when the nut (300) for coupling the inner ball joint (100) and the outer ball joint (200) is rotated.

Description

Technical Field [0001] The present invention relates to a tie rod for a steering device for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tie rod of a steering apparatus for a vehicle, and more particularly, to a tie rod of a steering apparatus for a vehicle which can precisely and easily carry out a toe-in adjustment work of the vehicle.

2. Description of the Related Art Generally, a steering apparatus for a vehicle includes a steering wheel, a steering shaft connected to the steering wheel, a gear box connected to the lower end of the steering shaft in a direction of throttling to convert the rotational force of the steering shaft into a reciprocating motion, And a tie rod having an inner ball joint and an outer ball joint on both sides of the rack bar.

In order to improve straightness by preventing the steering from being tilted to one side during running of the vehicle and to improve the steering feeling during operation of the steering wheel, the length between the inner ball joint and the outer ball joint of the tie rods provided on both sides of the rack bar is properly set The vehicle assembly process is performed through the toe-in adjustment.

Fig. 1 shows a tie rod of a steering device for a vehicle disclosed in Japanese Patent No. 10-0795054. The tie rod 10 of the conventional steering system for a vehicle shown in Fig. 1 is provided with a shaft portion 20 having a male screw portion 21 formed on an outer peripheral surface at one end side, and a shaft portion 20 having a male screw portion 21, And an outer ball housing 41 having an internal thread portion 42 formed on an outer circumferential surface of the shaft portion 20 and provided between the outer diameter side of the shaft portion 20 and the inner diameter side of the outer ball housing 41, , 52, 53) are provided.

The fixing means 51, 52 and 53 are provided with an inclined surface 51 formed at the entrance side of the female threaded portion 42 and a steel member 51 which is in close contact with the outer peripheral surfaces of the inclined surface 51 and the shaft portion 20, And a fixing nut (53) screwed to the outer ball housing (41) so as to press the steel ring (52) to the outer peripheral surface side of the inclined surface (51) and the shaft portion do.

With such a configuration, there is an advantage that the adhesion between the male thread portion 21 of the tie rod 10 and the female threaded portion 42 can be increased.

However, the conventional tie rod 10 can not be rotated by the rotation of the fixing nut 53 after the toe-in is adjusted by the relative rotation between the inner ball joint 30 and the outer ball joint 40, When the relative rotation between the inner ball joint 30 and the outer ball joint 40 occurs in tightening the joint 40, the adjustment value of the toe-in is distorted. To prevent this, Since the hexagonal portion 57 formed in the outer joint portion 22 and the outer ball joint 40 are respectively held and fixed by using a tool such as a spanner or the like, It is not easy to fasten the joint 30 and the outer ball joint 40, and there is a problem in that the work space is restricted.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a steering apparatus for a vehicle, which can easily and quickly perform an engagement operation of an inner ball joint and an outer ball joint while maintaining a toe- The purpose is to provide a load.

Another object of the present invention is to provide a tie rod for a steering apparatus for a vehicle that can increase the fastening force between an inner ball joint and an outer ball joint and effectively prevent a nut from being loosened.

The tie rod (1) of the steering system for a vehicle according to the present invention for realizing the above-mentioned object is characterized in that one side is connected to a gear box of a steering device for a vehicle and an inner ball joint (100); An outer ball joint 200 in which a female screw 211 is formed on an inner circumferential surface of one side of the inner ball joint 100 so that the male screw portion 112 is inserted and screwed inward and the other side is connected to the knuckle side; A nut 300 for fastening the inner ball joint 100 and the outer ball joint 200 is formed on the inner circumferential surface of the inner ball joint 100. The inner ball joint 100 is formed with a female screw portion 311 screwed with the male screw portion 112, ; 400 ', 400 "provided between the outer ball joint 200 and the nut 300 and the nut 300 for fastening the inner ball joint 100 and the outer ball joint 200, And a rotation interlocking means for allowing the inner ball joint 100 and the outer ball joint 200 to rotate together at the same angle at the time of rotation of the inner ball joint 100 and the outer ball joint 200.

The rotation interlocking means is provided to prevent relative rotation between the inner ball joint 100 and the washers 400, 400 ', 400 ".

When the nut 300 is rotated, the washer 400, 400 ', 400 "can be moved in the axial direction, but can be prevented from rotating relative to the inner ball joint 100.

The rotation interlocking means includes a groove 113 formed on an outer circumferential surface of the other side of the inner ball joint 100 in a predetermined axial direction and a groove 113 projecting in the center of the inner peripheral surface of the washer 400, And may be composed of an engaging protrusion 420.

The washer 400 'is formed in a ring shape and has a diameter that is different from a diameter of the rear end surface 401 and a diameter of the front end surface 402 with respect to the axial direction. The rear end surface 401' 402 of the inner ball joint 100 and the outer ball joint 200 by the rotation of the nut 300. The elasticity of the washer 400 ' The nut 300 may be prevented from being loosened due to an increased axial force between the male screw portion 112 of the inner ball joint 100 and the female screw portion 311 of the nut 300. [

The rotation interlocking means includes an engagement surface 115 formed at a predetermined length on a part of an outer circumferential surface of the other side portion of the inner ball joint 100 and an engagement surface 115 formed on a part of the inner circumferential surface of the washer 400 & And an engaging plane portion 430.

According to the tie rod of the steering system for a vehicle according to the present invention, when the nut is rotated and rotated, the inner joint member and the outer joint member are rotated together at the same angle. The fastening operation of the ball joint and the outer ball joint can be easily performed.

The rotation interlocking means may be constituted by a groove formed on the outer circumferential surface of the inner ball joint by a predetermined length in the axial direction and a protruding portion protruding from the inner circumferential surface of the washer in the circumferential direction and engaged with the groove, The structure of the rotating interlocking means can be simplified and the relative rotation between the inner ball joint and the washer can be prevented during rotation of the nut, by constituting the engaging face formed by the engaging face and the flat face portion formed on a part of the inner peripheral face of the washer, Variation of the toein adjustment value can be prevented.

In addition, the washer is made of a ring-shaped elastic washer. By the elastic force in the axial direction of the washer in a state where the inner ball joint and the washer and the outer ball joint are in close contact with each other by tightening the nut, It is possible to effectively prevent the loosening of the nut by increasing the axial adhesion force between the parts.

1 is an exploded perspective view of a tie rod of a conventional steering system for a vehicle,
FIG. 2 is a perspective view of a tie rod of a steering system for a vehicle according to an embodiment of the present invention,
Fig. 3 is an exploded perspective view of Fig. 1,
Fig. 4 is a longitudinal sectional view of Fig. 1,
5 is an exploded sectional view of a tie rod of a steering system for a vehicle according to another embodiment of the present invention,
6 (a) and 6 (b) are cross-sectional views showing a fastening process of the steering system for a vehicle shown in Fig. 5,
7 is an exploded perspective view of a tie rod of a steering system for a vehicle according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is an assembled perspective view of a tie rod of a steering system for a vehicle according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of FIG. 1, and FIG. 4 is a longitudinal sectional view of FIG.

2 to 4, a tie rod 1 of a steering system for a vehicle according to an embodiment of the present invention includes an inner ball joint 100, which is connected in a threaded manner so as to enable toe-in adjustment, A nut 300 for fastening and fixing the inner bolt 100 and the outer bolt 200 to each other after the ball joint 200 is adjusted and a washer 320 provided between the outer ball joint 200 and the nut 300 And a rotation interlocking means for rotating the inner ball joint 100 and the outer ball joint 200 together at the same angle when the nut 300 is rotated.

The inner ball joint 100 includes an inner ball pin 110 in the form of a shaft and an inner ball housing 120 coupled to one end of the inner ball pin 110.

An inner ball 111 is integrally formed at one end of the inner ball pin 110. The inner ball 111 is inserted into the inner ball housing 120 and interlocked with the inner ball housing 120 in the axial direction And can swing within a predetermined angle range.

One side of the inner ball housing 120 is connected to a rack bar provided in the gear box of the steering apparatus for a vehicle.

A male thread 112 is formed on the outer peripheral surface of the other side of the inner ball pin 110.

A groove 113 having a predetermined length in the axial direction is formed on the outer peripheral surface of the other side of the inner ball pin 110 on which the male screw portion 112 is formed.

When a tool is used to rotate the inner ball joint 100 to adjust the toe-in of the tie rod 1, a hexagonal portion 114 for providing the holding surface of the tool is formed on the outer peripheral surface of the inner ball pin 110 .

The outer ball joint 200 includes an outer ball socket 210 having a female screw 211 formed on an inner circumferential surface of one side of the inner ball pin 110 so that the male screw 112 of the inner ball pin 110 is inserted and screwed in, An outer ball housing 220 coupled to the other side portion of the outer ball socket 210 and opened upwardly, and a knuckle (not shown) inserted into the outer ball housing 220 so as to be swingable and extending upward, And an outer ball joint connected to the outer ball joint.

The male screw portion 112 formed on the outer circumferential surface of the inner ball pin 110 and the female screw portion 211 formed on the inner circumferential surface of the outer ball socket 210 connect the inner ball joint 110 and the outer ball joint 200 And to adjust the toe-in of the vehicle. That is, by varying the relative length between the inner ball joint 100 and the outer ball joint 200 by rotating the inner ball pin 110 in the forward or reverse direction while the male screw 112 and the female screw 211 are engaged, To-be-adjusted.

The nut 300 has a structure in which the inner ball pin 110 and the outer ball socket 210 are fastened and fixed after the toe-in adjustment is completed. The nut 300 has a female screw portion 311 And is screwed to the male thread portion 112 of the inner ball pin 110 and is reciprocally movable in forward and backward directions by forward or reverse rotation.

The washer 400 includes a ring-shaped circular part 410 having both side surfaces closely contacted with the front side surface 212 of the outer ball socket 210 and the rear side surface 312 of the nut 300, And a protrusion 420 protruding from the inner circumferential surface of the inner ball pin 410 in the circumferential center direction and engaged with the groove 113 formed in the inner ball pin 110 described above. 3, the grooves 113 and the protrusions 420 are formed in a single number, but they may be formed at a plurality of positions corresponding to each other.

The rotation interlocking means prevents relative rotation between the inner ball joint 100 and the washer 400 when the nut 300 is rotated and at the same time when the inner ball joint 100 and the outer ball joint 200 are rotated And includes a groove 113 formed in the inner ball pin 110 and a protrusion 420 formed in the washer 400. As shown in FIG. The projection 420 of the washer 400 is engaged with the groove 113 of the inner ball pin 110 so that when the nut 300 is rotated, the washer 400 is rotated in the axial direction Relative rotation with the inner ball pin 110 is prevented.

Hereinafter, the toe-in adjusting operation of the vehicle and the tightening process of the inner ball joint 100 and the outer ball joint 200 after the toe-in adjustment will be described.

The nut 300 is moved to the front side of the male screw portion 112 of the inner ball pin 110 and the protrusion 420 formed on the washer 400 is inserted into the groove 113 formed in the inner ball pin 110 And the washer 400 is positioned around the male screw portion 112 so as to be positioned on the inner side.

Next, the inner ball pin 110 is rotated to move the inner ball joint 100 and the outer ball joint 210 by the relative movement between the male screw portion 112 of the inner ball pin 110 and the female screw portion 211 of the outer ball socket 210, And adjusts the toe-in value by varying the length of the toe-in.

When the toe adjustment is completed, the nut 300 is rotated to move to the outer ball socket 210 side so that the nut 300 and the washer 400 and the outer ball socket 210 are closely contacted and fixed.

In this case, the rear side surface 312 of the nut 300 and the front surface of the washer 400 are in close contact with each other, and at the same time, the rear surface of the washer 400 and the front side surface 212 of the outer ball socket 210 are in close contact with each other The rotational force of the nut 300 is transmitted to the washer 400 and the washer 400 receives a force to rotate in the same direction as the nut 300. [

However, since the washer 400 is positioned so that the protrusion 420 is engaged with the groove 113 of the inner ball pin 110, rotation of the nut 300 is suppressed. Therefore, even if the nut 300 is rotated, It is prevented that the outer ball socket 210 which is in close contact with the rear side is rotated to be interlocked. Therefore, the inner ball joint 100 and the outer ball joint 200 can maintain the adjusted value of the toein without being affected by the rotation of the nut 300. [

With this configuration, when the nut 300 is rotated for fastening between the inner ball joint 100 and the outer ball joint 200, the hexagonal portion 114 of the inner ball joint 100 is rotated by a tool such as a spanner, And the outer ball joint 200 does not need to be fixed using a separate tool. Therefore, the toe-in adjustment and the fastening operation between parts can be performed simply and quickly.

5 and 6, the structure and operation of the tie rod of the steering system for a vehicle according to another embodiment of the present invention will be described. The same reference numerals are given to the same members as those in the above embodiment, Duplicate description is omitted.

The present embodiment differs from the above-described embodiment in that the shape of the washer 400 'is changed, and other constructions can be applied equally.

FIG. 5 is a cross-sectional view of a tie rod of a steering system for a vehicle according to another embodiment of the present invention, FIGS. 6A and 6B are cross-sectional views showing a fastening process of the steering apparatus for a vehicle shown in FIG. 6A shows a state in which the nut 300 and the washer 400 'start to contact each other; FIG. 6B shows a state in which the nut 300 and the washer 400' And the elastic force F acts on the washer 400 '.

In the present embodiment, the washer 400 'is formed in a ring shape, and the rear end face 401 and the front end face 402 have different diameters from each other with respect to the axial direction, and the rear end face 401 And an elastic washer connected between the front end surface 402 and the inclined surface 403.

Therefore, when the inner ball joint 100 and the outer ball joint 200 are fastened by the rotation of the nut 300, the elastic force F of the washer 400 ' The axial direction adhesion between the nut 112 and the female threaded portion 311 of the nut 300 is increased.

Therefore, the fastening state of the inner ball joint 100 and the outer ball joint 200 can be firmly maintained, and the loosening of the nut 300 can be prevented.

Hereinafter, the configuration and operation of the tie rod of the steering system for a vehicle according to another embodiment of the present invention will be described with reference to FIG. 7, and the same reference numerals are given to the same members as those in the above embodiment, The description is omitted.

The tie rod of the steering system for a vehicle according to the present embodiment is different from the above-described embodiments in the structure of the rotary interlocking means and the other constructions can be applied equally.

The rotation interlocking means according to the present embodiment includes an engagement surface 115 formed at a predetermined length on a part of the outer circumferential surface of the other side of the inner ball joint 100 and an engagement surface 115 formed on a part of the inner circumferential surface of the washer 400 & And a flat portion 430 engaged with the flat portion 430.

According to such a configuration of the rotation interlocking means, when the nut 300 is rotated by the engagement of the flat surface portion with the engagement surface 115, the washer 400 "can move in the axial direction, Relative rotation between the inner ball joint 100 and the washer 400 " is prevented and the inner ball joint 100 and the outer ball joint 200 are rotated together at the same angle by preventing the relative rotation between the inner ball joint 100 and the washer & The inner ball joint 100 and the outer ball joint 200 can be easily tightened while the adjustment value of the inner ball joint 100 and the outer ball joint 200 is kept constant.

As described above, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the scope of the present invention as defined in the appended claims. And such modifications are within the scope of the present invention.

1, 10: tie rod 20:
22: Hexagon portion 30: Inner ball joint
40: outer ball joint 52: steel ring
53: fixing nut 57: hexagonal part
100: inner ball joint 110: inner ball pin
111: Inner ball 112: Male thread
113: groove 114: hexagonal portion
115: engaging surface 120: inner ball housing
200: outer ball joint 210: outer ball socket
211: female thread portion 212: front side
220: outer ball housing 230: outer ball joint
300: nut 310: body
311: female thread portion 312: rear side
400, 400 ", 400 ": Washer 401:
402: front end surface 403: inclined surface
410: round part 420: protrusion
430:

Claims (6)

An inner ball joint (100) having one side connected to a gear box of a steering device for a vehicle and a male screw portion (112) formed on an outer circumferential surface of the other side;
An outer ball joint 200 in which a female screw 211 is formed on an inner circumferential surface of one side of the inner ball joint 100 so that the male screw portion 112 is inserted and screwed inward and the other side is connected to the knuckle side;
A nut 300 for fastening the inner ball joint 100 and the outer ball joint 200 is formed on an inner circumferential surface of the inner ball joint 100 so as to be screwed with the male screw portion 112 of the inner ball joint 100, ;
(400, 400 ', 400 ") provided between the outer ball joint (200) and the nut (300)
The inner ball joint 100 and the outer ball joint 200 are rotated together so that the inner ball joint 100 and the outer ball joint 200 are rotated together at the same angle when the nut 300 is fastened to the inner ball joint 100 and the outer ball joint 200, A tie rod of the steering system for a vehicle.
The method according to claim 1,
Wherein the rotation interlocking means comprises:
Wherein the tie rods are provided to prevent relative rotation between the inner ball joint (100) and the washers (400, 400 ', 400 ").
The method according to claim 1,
Wherein when the nut (300) is rotated, the washer (400, 400 ', 400 ") is axially movable but prevented from rotating relative to the inner ball joint (100) road.
The method according to claim 1,
Wherein the rotation interlocking means comprises:
A groove 113 formed in the outer peripheral surface of the other side of the inner ball joint 100 and having a predetermined length in the axial direction,
And a protrusion (420) protruding from the inner circumferential surface of the washer (400) in a radial direction so as to engage with the groove (113).
The method according to claim 1,
The washer 400 'is formed in a ring shape and has a diameter that is different from a diameter of the rear end surface 401 and a diameter of the front end surface 402 with respect to the axial direction. The rear end surface 401' 402 are made of an elastic washer connected to an inclined surface 403,
When the inner ball joint 100 and the outer ball joint 200 are fastened by the rotation of the nut 300, the male thread portion 112 of the inner ball joint 100 is elastically deformed by the elastic force of the washer 400 ' Tightening force between the nut (300) and the female threaded portion (311) of the nut (300) increases to prevent the nut (300) from loosening.
The method according to claim 1,
Wherein the rotation interlocking means comprises:
An engaging surface 115 formed at a predetermined length on a part of the outer peripheral surface of the other side of the inner ball joint 100,
And a flat surface portion (430) formed on a part of the inner circumferential surface of the washer (400 ") and engaged with the engaging surface (115).
KR1020160027134A 2016-03-07 2016-03-07 Tie rod of steering device for vehicle KR20170104281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160027134A KR20170104281A (en) 2016-03-07 2016-03-07 Tie rod of steering device for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160027134A KR20170104281A (en) 2016-03-07 2016-03-07 Tie rod of steering device for vehicle

Publications (1)

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KR20170104281A true KR20170104281A (en) 2017-09-15

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KR1020160027134A KR20170104281A (en) 2016-03-07 2016-03-07 Tie rod of steering device for vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220093414A (en) * 2020-12-28 2022-07-05 현대자동차주식회사 Offset type tie rod and tie rod end for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220093414A (en) * 2020-12-28 2022-07-05 현대자동차주식회사 Offset type tie rod and tie rod end for vehicle

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