KR20140037352A - Tie rod assembly of steering apparatus for vehicle - Google Patents

Tie rod assembly of steering apparatus for vehicle Download PDF

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Publication number
KR20140037352A
KR20140037352A KR1020120102701A KR20120102701A KR20140037352A KR 20140037352 A KR20140037352 A KR 20140037352A KR 1020120102701 A KR1020120102701 A KR 1020120102701A KR 20120102701 A KR20120102701 A KR 20120102701A KR 20140037352 A KR20140037352 A KR 20140037352A
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KR
South Korea
Prior art keywords
tie rod
small diameter
diameter portion
steering apparatus
rod assembly
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Application number
KR1020120102701A
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Korean (ko)
Inventor
김기환
Original Assignee
주식회사 만도
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Priority to KR1020120102701A priority Critical patent/KR20140037352A/en
Publication of KR20140037352A publication Critical patent/KR20140037352A/en

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    • 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
    • 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

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

Abstract

The present invention relates to a tie rod assembly of a vehicle steering apparatus, according to the present invention, the weight is reduced compared to the tie rod that was conventionally manufactured as a single part by forging, so as to reduce the manufacturing cost and increase the logistics mobility. do.
In addition, if the first tie rod connected to the ball joint of the tie rod assembly is commonly used for all vehicle types, and only the second tie rod, which is light and low in price and easy to process, produces different lengths, the lengths may be different depending on the type of the car. There is no need to manufacture many other specifications of tie rods, which reduces the manufacturing process and costs.

Figure P1020120102701

Description

Tie Rod Assembly of Steering Apparatus for Vehicle

The present invention relates to a tie rod assembly of a vehicle steering apparatus. More specifically, the weight is reduced and the manufacturing cost is reduced compared to the tie rod, which is conventionally manufactured by a single part by forging, and thus the logistics mobility is increased, and the first tie rod connected to the ball joint of the tie rod assembly is The second tire rod, which is commonly used as a car model and is light and low in price and easy to process, produces different lengths separately, thus reducing the manufacturing process and unit cost by eliminating the need to produce tie rods of different lengths according to the car model. And a tie rod assembly of a vehicle steering device.

BACKGROUND ART [0002] Generally, a steering apparatus of a vehicle is a device for changing the 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 .

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 perspective view showing a part of a conventional vehicle steering apparatus, Figure 2 is a partial cross-sectional view showing a part of a conventional vehicle steering apparatus.

As shown in FIGS. 1 and 2, the conventional vehicle steering apparatus 100 includes a rack pinion mechanism unit 130 and a rack gear (not shown) for converting a rotational force input from the steering shaft 105 into a linear motion. A rack bar 230 having inner ball joints 210 at both ends, a tie rod 110 formed integrally with the balls of the inner ball joint 210, and a tie rod end connected to the tie rod 110; 120, an outer ball joint 125 provided at an end of the tie rod end 120, and a bellows 140 surrounding the inner ball joint 210 and fixed by the clamp 225. .

When the driver rotates the steering wheel, the turning force is transmitted to the steering shaft 105 and the universal joint (not shown). The steering shaft 105 and the universal joint (not shown) And the transmitted rotational force is changed by a rack and a pinion gear in a linear direction to linearly move the rack bar 230.

In addition, the inner ball joint 210 is provided 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 lock nut 150 ) Is connected to the tie rod end 120 and the outer ball joint 125 to the knuckle of the tire.

The inner ball joint 210 surrounds the tie rod 110 having the spherical ball stud portion 303 and the ball rod stud portion 303 of the tie rod and connects the tie rod 110 and the rack bar 230. The housing 240, the ball stud portion 303 of the tie rod, and the ball seat 250 made of a plastic material inserted between the ball housing 240 may be assembled and connected to each other.

That is, the ball seat 250 of the plastic material is inserted into the inner surface of the ball housing 240, and after assembling the ball stud portion 303 of the tie rod thereto, the flange end of the ball housing is fixed by caulking (260). It is structured.

In such a conventional vehicle steering apparatus, the tie rod is made of a single part by forging, so that the weight is increased and the manufacturing cost is increased, thereby lowering the logistics mobility.

In addition, there has been a problem in that the manufacturing process is increased and the manufacturing cost is increased due to the manufacture of tie rods having numerous specifications different in length depending on the vehicle model.

Accordingly, the present invention has been made in view of the above-described background, and has an object to increase the logistics mobility while reducing the weight and manufacturing cost compared to the tie rod that was conventionally manufactured as a single part by forging.

In addition, the first tie rod connected to the ball joint of the tie rod assembly is common to all models, and only the second tie rod, which is light and low in price and easy to process, produces different lengths and is different from each other according to the model of the car. Its purpose is to reduce the manufacturing process and unit cost by eliminating the manufacture of tie rods with many other specifications.

One embodiment of the present invention in order to achieve this purpose is the first tie rod is formed with a ball stud part is coupled to the ball joint via the rack bar and the ball housing and the other side is formed with a small diameter portion reduced in diameter; One side is coupled to the small diameter portion of the first tie rod and the other side provides a tie rod assembly of the vehicle steering apparatus including a second tie rod coupled to the tie rod end.

According to the present invention as described above, the weight is reduced and the manufacturing cost is reduced compared to the tie rod that was conventionally manufactured by a single part by forging process has the effect of increasing the logistics mobility.

In addition, the first tie rod connected to the ball joint of the tie rod assembly is common to all models, and only the second tie rod, which is light and low in price and easy to process, produces different lengths and is different from each other according to the model of the car. There is no need to manufacture many other specifications of tie rods, which reduces the manufacturing process and costs.

1 is a perspective view showing a part of a conventional vehicle steering apparatus;
2 is a partial sectional view showing a part of a conventional vehicle steering apparatus;
3 is an exploded perspective view showing a tie rod assembly of a vehicle steering apparatus according to an embodiment of the present invention;
4 is a partial cross-sectional view showing a tie rod assembly of a vehicle steering apparatus according to an embodiment of the present invention;
5 is a partial cross-sectional view showing a tie rod assembly of a vehicle steering apparatus according to a modified embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings.

Figure 3 is an exploded perspective view showing a tie rod assembly of the vehicle steering apparatus according to an embodiment of the present invention, Figure 4 is a partial cross-sectional view showing a tie rod assembly of the vehicle steering apparatus according to an embodiment of the present invention, Figure 5 A partial cross-sectional view showing a tie rod assembly of a vehicle steering apparatus according to a modified embodiment of the present invention.

Referring to these drawings, the tie rod assembly 300 of the vehicle steering apparatus according to an embodiment of the present invention, one side of the ball stud portion 303 is ball joint coupled via the rack bar 230 and the ball housing 240 ) Is formed and the other side is the first tie rod 310 has a small diameter portion 305 is reduced in diameter; One side is coupled to the small diameter portion 305 of the first tie rod 310 and the other side is configured to include a second tie rod 320 is coupled to the tie rod end 120.

The tie rod assembly 300 is coupled to the rack bar 230 and the inner ball joint through the ball housing 240 so that the first tie rod 310 can move at a predetermined angle with the central axis of the rack bar 230. The bellows 140 is coupled to the outer circumferential surface of the second tie rod 320 and one end of the rack housing 220.

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. The tie rod assembly 300 is linearly interlocked with the rack bar 230.

And, the bellows 140 to prevent the inflow of foreign matter into the rack housing 220, one end is coupled to the rack housing 220, the other end is coupled to the second tie rod 320, the tightening force on the outer side of each coupling portion Is coupled to the clamp, so that when the driver's steering shaft operation, the rack bar 230 slides from one side of the rack housing 220 to the other side, the both ends of the bellows 140 is rack housing 220 and tie rod assembly Supported by 300 is to contract and relax.

The contraction-relaxing length of the bellows 140 has a longitudinal change of approximately 140 to 150 mm when the steering wheel is full-turned, that is, when the steering wheel is rotated clockwise or to the opposite direction.

The rack housing 220 accommodates the rack bar 230 which is linearly engaged with the pinion of the steering shaft (see 105 in FIG. 1) inside and reduces the diameter toward the center to limit the movement of the ball housing 240 at both ends. The stepped portion is formed.

The inner ball joint (see 210 in FIG. 2) serves to connect the rack bar 230 and the tie rod assembly 300, and the ball stud portion 303 formed at one end of the first tie rod 310. And ball joint.

One side of the ball housing 240 is coupled to the end of the rack bar 230 is formed with a rack and the other side is coupled to the first tie rod 310, the other side of the ball housing 240 is the ball of the first tie rod 310 It has a groove shape opened in one direction so as to surround the stud portion 303 and can be coupled.

The ball housing 240 is formed in a shape in which a rough cross-sectional shape of the ball housing 240 is combined with a "c" shape and a "semi-circle" shape. A ball sheet is inserted into the ball housing 240 so that the ball of the first tie rod 310 may be formed. It is coupled with the stud portion 303.

The rack bar 230 makes steering of the car by manipulating both wheels connected to the tie rod assembly 300 and the knuckle arm while linearly moving in the rack housing 220 when the steering wheel is operated.

One side of the second tie rod 320 is coupled to the small diameter portion 305 of the first tie rod 310 and the other side is coupled to the tie rod end 120, the second tie rod 320 is formed in a hollow It can be formed solid.

That is, as shown in FIG. 4, the second tie rod 320 is formed to be hollow and press-coupled to the small diameter portion 305 of the first tie rod 310 or the inner circumferential surface of one end of the second tie rod 320. A thread is formed on the outer circumferential surface of the small diameter portion 305 of the first tie rod 310 so that the second tie rod 320 and the first tie rod 310 may be screwed together.

In addition, the second tie rod 320 may be formed to be hollow and may be coupled to the one end of the small diameter portion 305 of the first tie rod 310 inserted therein.

In addition, as shown in FIG. 5, the second tie rod 320 is formed of a solid portion, and a fastening groove 321 into which the small diameter portion 305 of the first tie rod 310 is inserted is formed at one end thereof to form a small diameter portion ( 305, or a screw part is formed on the inner circumferential surface of the fastening groove 321 and the outer circumferential surface of the small diameter portion 305 of the first tie rod 310 so that the second tie rod 320 is connected to the first tie rod 310. It can also be screwed together.

The one end of the second tie rod 320 to which the small diameter portion 305 of the first tie rod 310 is coupled is formed so that one end of the bellows 140 is not pushed out when the steering shaft is operated. The bellows coupling groove 323 recessed on the outer circumferential surface of the two tie rods 320 is formed.

Therefore, even if the rack bar 230 and the tie rod assembly 300 are slid into the rack housing 220 when the steering wheel is operated by the driver, one end and the other end of the bellows 140 are respectively coupled with the rack housing 220 and the coupling groove ( 323) is firmly fixed to the contraction and relaxation is made smoothly.

In addition, a screw portion 327 coupled to the tie rod end 120 and the lock nut 150 on the other outer circumferential surface of the second tie rod 320 and a tool groove 325 for fixing the tool are formed. The groove 325 is formed to form a hexagonal or octagonal nut cross section of the outer circumferential surface of the second tie rod 320 to increase convenience during assembly.

According to the present invention having such a structure and shape, the weight is reduced and manufacturing cost is reduced compared to the tie rod that was conventionally manufactured as a single part by forging, thereby increasing the logistics mobility.

In addition, the first tie rod connected to the ball joint of the tie rod assembly is common to all models, and only the second tie rod, which is light and low in price and easy to process, produces different lengths and is different from each other according to the model of the car. There is no need to manufacture many other specifications of tie rods, which reduces the manufacturing process and costs.

230: Rack bar 240: Ball housing
300: tie rod assembly 303: ball stud portion
305: small diameter portion 310: first tie rod
320: second tie rod 323: coupling groove
325: tool groove 327: threaded portion

Claims (5)

One side is formed with a ball stud portion coupled to the ball joint through the rack bar and the ball housing, the other side is the first tie rod is formed a small diameter portion is reduced in diameter;
A second tie rod having one side coupled to the small diameter portion of the first tie rod and the other side coupled to the tie rod end;
Tie rod assembly of the vehicle steering device comprising a. The method of claim 1,
The second tie rod is formed in a hollow and tie rod assembly of the vehicle steering apparatus, characterized in that the press-fitting with the small diameter portion of the first tie rod. The method of claim 1,
And the second tie rod is hollow and has a screw portion formed on an inner circumferential surface of one side end and an outer circumferential surface of the small diameter portion of the first tie rod, thereby being screwed to the first tie rod. The method of claim 1,
The second tie rod is formed in a hollow and tie rod assembly of the vehicle steering apparatus, characterized in that the small diameter portion of the first tie rod is cocked and coupled to the one end portion inserted. The method of claim 1,
The second tie rod is formed of a solid and is formed with a fastening groove into which the small diameter portion of the first tie rod is inserted at one end thereof and is press-fitted with the small diameter portion, or on the outer peripheral surface of the small diameter portion of the fastening groove and the first tie rod. The tie rod assembly of the vehicle steering apparatus, characterized in that the screw portion is formed is screwed with the first tie rod.
KR1020120102701A 2012-09-17 2012-09-17 Tie rod assembly of steering apparatus for vehicle KR20140037352A (en)

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KR1020120102701A KR20140037352A (en) 2012-09-17 2012-09-17 Tie rod assembly of steering apparatus for vehicle

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017195952A1 (en) * 2016-05-11 2017-11-16 주식회사 티앤지 Tie rod assembly having strength intensified by insert core
CN107487360A (en) * 2017-08-11 2017-12-19 江西积裕实业有限公司 A kind of motor turning drag link
CN107600180A (en) * 2017-08-31 2018-01-19 安徽江淮汽车集团股份有限公司 A kind of single tierod assembly
CN107600181A (en) * 2017-08-31 2018-01-19 安徽江淮汽车集团股份有限公司 A kind of single tierod assembly
CN107672672A (en) * 2017-08-31 2018-02-09 安徽江淮汽车集团股份有限公司 A kind of single tierod assembly and its method of adjustment
CN108725581A (en) * 2018-08-15 2018-11-02 重庆望江工业有限公司 A kind of trailer steering linkage assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017195952A1 (en) * 2016-05-11 2017-11-16 주식회사 티앤지 Tie rod assembly having strength intensified by insert core
CN107487360A (en) * 2017-08-11 2017-12-19 江西积裕实业有限公司 A kind of motor turning drag link
CN107600180A (en) * 2017-08-31 2018-01-19 安徽江淮汽车集团股份有限公司 A kind of single tierod assembly
CN107600181A (en) * 2017-08-31 2018-01-19 安徽江淮汽车集团股份有限公司 A kind of single tierod assembly
CN107672672A (en) * 2017-08-31 2018-02-09 安徽江淮汽车集团股份有限公司 A kind of single tierod assembly and its method of adjustment
CN108725581A (en) * 2018-08-15 2018-11-02 重庆望江工业有限公司 A kind of trailer steering linkage assembly

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