KR20120051402A - Tie rod of steering apparatus and steering apparatus having the same - Google Patents

Tie rod of steering apparatus and steering apparatus having the same Download PDF

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Publication number
KR20120051402A
KR20120051402A KR1020100112826A KR20100112826A KR20120051402A KR 20120051402 A KR20120051402 A KR 20120051402A KR 1020100112826 A KR1020100112826 A KR 1020100112826A KR 20100112826 A KR20100112826 A KR 20100112826A KR 20120051402 A KR20120051402 A KR 20120051402A
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KR
South Korea
Prior art keywords
bellows
tie rod
coupled
small diameter
steering
Prior art date
Application number
KR1020100112826A
Other languages
Korean (ko)
Inventor
손명섭
Original Assignee
주식회사 만도
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Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020100112826A priority Critical patent/KR20120051402A/en
Publication of KR20120051402A publication Critical patent/KR20120051402A/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
    • B62D7/16—Arrangement of linkage connections
    • B62D7/163—Arrangement of linkage connections substantially in axial direction, e.g. between rack bar and tie-rod
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/05—Reducing production costs, e.g. by redesign
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/07—Facilitating assembling or mounting
    • B60Y2304/078—Facilitating assembling or mounting by interchangeable parts, e.g. new part adapting to old design

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

PURPOSE: A tie rod of a steering device and steering device comprising the same is provided to prevent noise generated through the tightening force shortage of a tightening clip or the manufacturing error of a bellows in the coupling portion of a bellows and a tie rod, and the slip or the separation of a bellows and reduce manufacturing cost and processes through producing a bellows for common use. CONSTITUTION: A tie rod(310) of a steering device comprises a small diameter part(320). The outer diameter of the small diameter part is reduced for the movement of a bellows(140) in steering operation. The small diameter part comprises a sliding section from the coupling portion of a bellows end(305) for limiting the section in which a bellows end slid.

Description

Tie Rod of Steering Apparatus and Steering Apparatus With The Same {Tie Rod of Steering Apparatus and Steering Apparatus having The Same}

The present invention relates to a steering device. More specifically, it prevents noise caused by a lack of fastening force of the fastening clip or a bellows manufacturing error at the joint portion of the conventional bellows and tie rod, and prevents the bellows slipping or dropping, and separately produces bellows according to the model. The present invention relates to a tie rod of a steering apparatus and a steering apparatus having the same, which can be commonly used to reduce manufacturing costs and manufacturing processes.

In general, the steering device of a vehicle is a device for changing the driving direction of the vehicle at the driver's will, and is a device that assists the driver in advancing the vehicle in a desired direction by arbitrarily changing the rotation center of the front wheel of the vehicle. .

The steering device of such a vehicle includes a steering column disposed at the driver's seat, a steering shaft connected thereto, and a steering column mounted outside thereof to fix the gearbox and the steering shaft connected through the steering shaft and the universal joint to the vehicle body. Etc. are provided.

1 is a partial perspective view of a conventional steering apparatus, and FIG. 2 is a cross-sectional view illustrating a part of a conventional steering apparatus.

As shown in FIGS. 1 and 2, the conventional steering apparatus 100 includes a rack pinion mechanism 130 and a rack gear (not shown) for converting a rotational force input from the steering shaft 105 into a linear motion. Rack bar 230 having an inner ball joint 210 at both ends, a tie rod 110 formed integrally with the ball of the inner ball joint 210, and a tie rod end 120 connected to the tie rod 110. ), An outer ball joint 125 provided at the end of the tie rod end 120, and a bellows 140 surrounding the inner ball joint 210.

The steering device having such a configuration includes a pinion gear that transmits power by contacting the rack gear unit formed in the rack bar 230, and when the driver rotates the steering wheel, the rotational force is generated by the steering shaft 105 and the universal joint (not shown). It is transmitted to the pinion gear through, the transmitted rotational force is changed into a force in a linear direction by the rack and pinion gear to linearly move the rack bar 230.

In addition, the steering device is provided with an inner ball joint 210 at the left and right ends of the rack bar 230, the rack gear is formed, the inner ball joint 210 is connected to the tie rod 110, the tie rod 110 is locked The nut 150 is connected to the tie rod end 120 and the outer ball joint 125 to be connected to the knuckle of the tire.

The inner ball joint 210 wraps around the tie rod 110 having the spherical ball portion 270 and the ball portion 270 of the tie rod and connects the tie rod 110 and the rack bar 230. 240, a ball seat 250 made of a plastic material inserted between the ball portion 270 of the tie rod and the ball housing 240 may be assembled and connected to each other.

That is, the ball seat 250 of plastic material is inserted into the inner surface of the ball housing 240, and the ball portion 270 of the tie rod is assembled therein, and then the flange end of the ball housing is fixed by caulking (260). It is.

In such a conventional steering device, the bellows 140 is coupled to the tie rod 110 and the rack housing 220 to relax and contract when the driver's steering shaft is operated. The pull wheel of the steering wheel, that is, watches the steering wheel. When rotating to the end of the direction or the opposite direction there was a problem that noise is generated in the coupling portion of the bellows 140 and tie rod 110.

In addition, when the bellows formed by blow molding and the tightening force of the clip tightening the bellows were insufficient, there was a lot of noise caused by the play between the tie rod and the bellows, and the bellows was pushed. There was a serious problem of leaving the tie rod and foreign matter introduced from the outside.

In addition, since the bellows having different lengths for each vehicle were to be manufactured separately, manufacturing costs increased, assembly processes, etc. increased, resulting in a drop in productivity.

Accordingly, the present invention has been made in the above-described background, to prevent noise caused by the lack of fastening force of the fastening clip or the bellows manufacturing error in the coupling portion of the conventional bellows and tie rods, and prevents the bellows push or escape, Therefore, the purpose is to shorten the manufacturing cost and manufacturing process by sharing the bellows production separately.

One embodiment of the present invention, in order to achieve this object, in one end of the steering rod coupled to the rack bar and the bellows is coupled to the outer circumferential surface, the tie rod is the bellows contraction and relaxation in the axial direction during steering It provides a tie rod of the steering apparatus, characterized in that it comprises a small diameter portion is reduced in the outer diameter to enable sliding.

In addition, another embodiment of the present invention, a steering wheel including a rack pinion mechanism coupled to the steering shaft, a rack bar coupled to the rack pinion mechanism and coupled to both ends of the tie rod, and a bellows coupled to the outer peripheral surface of the tie rod In the apparatus, the tie rod provides a steering device, characterized in that the bellows is provided with a small diameter portion is reduced in the outer diameter so that the bellows shrink and relax in the axial direction to enable sliding.

According to the present invention, to prevent the noise caused by the lack of tightening force of the fastening clip or the bellows manufacturing error in the coupling portion of the bellows and tie rods, to prevent the bellows push or separation, and to produce the bellows separately according to the model Since it can be shared, the production cost and manufacturing process can be shortened.

1 is a perspective view showing a part of a conventional steering apparatus;
2 is a sectional view showing a part of a conventional steering apparatus;
3 and 4 are cross-sectional views showing a part of a steering apparatus 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 intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. 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".

3 and 4 are cross-sectional views showing a part of a steering apparatus according to an embodiment of the present invention.

3 and 4, in one embodiment of the present invention, one end of the steering device is coupled to the rack bar 230 via the inner ball joint 210 and the bellows 140 is coupled to the outer peripheral surface In the rod 310, the tie rod 310 is characterized in that the bellows 140 is provided with a small diameter portion 320 is reduced in the outer diameter so that the bellows 140 shrinks and relaxes in the axial direction and the sliding is possible.

In addition, another embodiment of the present invention, the rack pinion mechanism coupled to the steering shaft (see 130 of FIG. 1), and the rack pinion mechanism coupled to both ends of the tie rod 310 via the inner ball joint 210 In the steering apparatus including a rack bar 230 coupled to, and a bellows 140 coupled to an outer circumferential surface of the tie rod 310, the tie rod 310 is the bellows 140 in the axial direction when steering. It is characterized in that it comprises a small diameter portion 320, the outer diameter is reduced so as to relax and shrink.

The tie rod 310 is coupled with the rack bar 230 through the inner ball joint 210 to move at a predetermined angle with the central axis of the rack bar 230, the outer circumferential surface of the tie rod 310 and the rack housing 220 At one end of the bellows 140 is coupled.

Therefore, when the driver manipulates the steering shaft, the rotational movement of the steering shaft is converted into a linear movement of the rack bar 230 through the rack pinion mechanism coupled to the lower end of the steering shaft so that the rack bar 230 slides along the rack housing 220. Done.

And, both ends of the rack bar 230 is coupled to the rack bar 230 via the inner ball joint 210 so that the tie rod 310 can move at a predetermined angle with the central axis of the rack bar 230, where the inner ball The joint 210 serves to connect the rack bar 230 and the tie rod 310, and the ball portion and the ball joint are formed at one end of the tie rod 310.

The bellows 140 which prevents the inflow of foreign substances into the rack housing 220 has one end coupled to the rack housing 220 and the other end coupled to the tie rod 310 so that the rack bar 230 when the driver's steering shaft is operated. When sliding from one side of the rack housing 220 to the other side, both ends of the bellows 140 is supported by the rack housing 220 and the tie rod 310 to contract and relax.

The contraction and relaxation length of the bellows 140 is a full turn of the steering wheel, i.e., when the steering wheel is rotated to the end of the clockwise direction or the opposite direction, it has a longitudinal change of about 140 to 150 mm. The load at both ends of the bellows 140 is very high.

Therefore, in the related art, the fixing means is coupled to the outer circumferential surface of the tie rod 310 to prevent the bellows 140 from being pushed out and released from contraction in the direction of the center axis of the rack bar 230 and the rack housing 220. However, in the present invention, the small diameter portion 320 in which the bellows 140 is slid is formed to be slid.

That is, the small diameter portion 320 is formed by reducing the diameter on the outer circumferential surface of the tie rod 310, the end portion 305 of the bellows 140 is coupled to the small diameter portion 320, the end of the bellows during the steering operation of the driver 305 slides along the outer circumferential surface of the small diameter portion 320.

The small diameter portion 320 has a sliding section of a predetermined length from one side or both sides from a portion where the end 305 of the bellows 140 is coupled so that the operation of sliding the end 305 of the bellows 140 is limited to a certain section. It is formed to be provided.

The slide operation section of the bellows end 305 is formed to be capable of sliding about 30 mm on one side and about 15 mm on both sides from the portion where the end 305 of the bellows 140 is coupled to be applicable to all models. do.

Therefore, it is possible to share the bellows in all models by securing a sliding section even without producing separate bellows having different lengths for each vehicle type.

In addition, at both ends of the small diameter portion 320, an inclined portion 321 is formed in which the diameter of the small diameter portion 320 is enlarged, so that the bellows 140 and the small diameter portion are near the time point at which the sliding of the bellows 140 is completed. The frictional force with the 320 is increased and the sliding is stopped gradually.

Therefore, the sliding of the bellows 140 is gradually stopped at both ends of the sliding section of the bellows 140 without a feeling of jamming so that noise due to a sudden stop is not generated.

In addition, the end of the inclined portion 321 is formed to be stepped with the outer circumferential surface of the tie rod 310, so that the bellows end 305 even when the durability is long and the elastic force of the bellows 140 end 305 is lowered The step portion 323 is capable of sliding without being separated from the inclined portion 321.

The inner circumferential surface of the small diameter portion 320 or the inner circumferential surface of the bellows end 305 coupled to the small diameter portion 320 is provided with a grease pocket 307 formed as a recess, and may be generated when the bellows 140 is slid. The bellows 140 is slid without a jam in the sliding operation section by preventing a noise that is present and reducing the sliding operation force.

The grease pocket 307 formed as the groove may be formed on the outer circumferential surface of the small diameter portion 320 and may be formed on the inner circumferential surface of the bellows end 305. In FIG. 4, the grease pocket 307 is representatively formed on the inner circumferential surface of the bellows end 305. Note that what is formed is shown.

On the other hand, the tie rod 310 of the present invention described above is a rack pinion mechanism portion (see 130 of FIG. 1) coupled to the steering shaft, the rack pinion mechanism portion is coupled to both ends of the tie rod (210) through the inner ball joint (210) A steering apparatus including a rack bar 230 coupled to 310 and a bellows 140 coupled to an outer circumferential surface of the tie rod 310 is configured. The description will be omitted.

According to the present invention having such a structure and shape, it is possible to prevent the noise caused by the lack of tightening force of the fastening clip or the bellows manufacturing error in the conventional coupling portion of the bellows and tie rods.

In addition, it is possible to share the production of the bellows separately according to the car model, it is possible to shorten the manufacturing cost and manufacturing process.

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.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. 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.

140: bellows 210: inner ball joint
220: rack housing 230: rack bar
305: Bellows end 307: Grease pocket
310: tie rod 320: small diameter portion
321: inclined portion 323: stepped portion

Claims (10)

In the tie rod of the steering device that one end is coupled to the rack bar and the bellows is coupled to the outer peripheral surface,
The tie rod is a tie rod of the steering apparatus, characterized in that the bellows has a small diameter portion is reduced in the outer diameter so that the bellows in the axial direction to relax and slide when steering. The method of claim 1,
The small diameter portion is a tie rod of the steering apparatus, characterized in that the sliding section of a predetermined length is provided on one side or both sides from the portion where the end of the bellows is coupled so that the operation of sliding the bellows is limited. The method of claim 2,
The small diameter portion is a tie rod of the steering apparatus, characterized in that the inclined portion is formed to enlarge the diameter at both ends. The method of claim 3, wherein
The inclined end portion of the tie rod of the steering apparatus, characterized in that formed in step with the outer peripheral surface of the tie rod. The method of claim 1,
A tie rod of a steering apparatus, characterized in that a grease pocket is formed as a recess on an outer circumferential surface of the small diameter portion or an end inner circumferential surface of a bellows coupled to the small diameter portion. In a steering apparatus including a rack pinion mechanism coupled to a steering shaft, a rack bar coupled to a rack pinion mechanism and coupled to tie rods, and a bellows coupled to an outer circumferential surface of the tie rod.
The tie rod is a steering device characterized in that it has a small diameter portion is reduced in outer diameter so that the bellows shrink and relax in the axial direction when the steering is possible to slide. The method according to claim 6,
The small diameter steering device, characterized in that the sliding section of the predetermined length is provided on both sides from the end portion of the bellows is coupled so that the operation of sliding the bellows is limited. The method of claim 7, wherein
The small diameter steering device, characterized in that the inclined portion is formed on both ends of the diameter is expanded. The method of claim 8,
Steering device characterized in that the end of the inclined portion is formed to be stepped with the outer peripheral surface of the tie rod. The method according to claim 6,
Steering device, characterized in that the outer peripheral surface of the small diameter portion or the inner peripheral surface of the end of the bellows coupled to the small diameter portion is provided with a grease pocket formed as a groove.
KR1020100112826A 2010-11-12 2010-11-12 Tie rod of steering apparatus and steering apparatus having the same KR20120051402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100112826A KR20120051402A (en) 2010-11-12 2010-11-12 Tie rod of steering apparatus and steering apparatus having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100112826A KR20120051402A (en) 2010-11-12 2010-11-12 Tie rod of steering apparatus and steering apparatus having the same

Publications (1)

Publication Number Publication Date
KR20120051402A true KR20120051402A (en) 2012-05-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100112826A KR20120051402A (en) 2010-11-12 2010-11-12 Tie rod of steering apparatus and steering apparatus having the same

Country Status (1)

Country Link
KR (1) KR20120051402A (en)

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