KR20170030676A - Connecting member for tie-rod assembly and tie-rod assembly with the same - Google Patents

Connecting member for tie-rod assembly and tie-rod assembly with the same Download PDF

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Publication number
KR20170030676A
KR20170030676A KR1020150127479A KR20150127479A KR20170030676A KR 20170030676 A KR20170030676 A KR 20170030676A KR 1020150127479 A KR1020150127479 A KR 1020150127479A KR 20150127479 A KR20150127479 A KR 20150127479A KR 20170030676 A KR20170030676 A KR 20170030676A
Authority
KR
South Korea
Prior art keywords
tie rod
ball joint
circumferential surface
outer circumferential
tie
Prior art date
Application number
KR1020150127479A
Other languages
Korean (ko)
Inventor
김용관
오상엽
Original Assignee
주식회사 티앤지
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 티앤지 filed Critical 주식회사 티앤지
Priority to KR1020150127479A priority Critical patent/KR20170030676A/en
Publication of KR20170030676A publication Critical patent/KR20170030676A/en

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/03—Reducing weight

Abstract

According to the present invention, there is provided a connecting member for connecting a ball joint device to be connected to both ends of a pipe-shaped FRP material tie rod in a tie rod assembly, the tie rod connecting portion being connected to the tie rod; And a ball joint coupling part coupled to the ball joint device, wherein an outer circumferential surface of the tie rod coupling part is formed to have a polygonal cross-sectional shape.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tie-

The present invention relates to a tie rod assembly, and more particularly, to a tie rod assembly including a connecting member for coupling a ball joint jig to a tie rod of a composite material.

The tie rod is a kind of steering device that adjusts the direction of the tire of the vehicle. When the steering wheel is folded, the tie rod is moved, and the knuckle connected to the tie rod end is moved to change the direction of the tire. At both ends of the tie rod, ball joint devices are coupled to each other to form a tie rod assembly. Since the conventional tie rod is made of steel, the tie rod assembly corresponds to a relatively heavy component. BACKGROUND ART [0002] In recent years, a light weight technology for a vehicle has been demanded for the development of an eco-friendly vehicle such as an improvement in fuel efficiency of a vehicle. To reduce the weight of a tie rod assembly, the applicant of the present invention has proposed an FRP- A tie rod assembly using the tie rod assembly. The tie rod assemblies of the prior patent documents have a steel connecting member fixed to both ends of the tie rod in order to connect the ball joint device to the tie rods made of FRP. However, the connecting force between the connecting member and the tie rod is weak There was a problem.

It is an object of the present invention to provide a connecting member for connecting a ball joint device to a tie rod made of FRP and a tie rod assembly having the connecting member.

Another object of the present invention is to provide a connecting member for joining a ball joint device to a tie rod made of FRP, as a connecting member for improving a coupling force with a tie rod, and a tie rod assembly having the connecting member.

According to an aspect of the present invention,

A tie rod coupling portion coupled to both ends of a pipe-shaped FRP material tie rod in the tie rod assembly to connect the ball joint device, the tie rod coupling portion being coupled to the tie rod; And a ball joint coupling part coupled to the ball joint device, wherein an outer circumferential surface of the tie rod coupling part is formed to have a polygonal cross-sectional shape.

The outer circumferential surface of the tie rod coupling portion may be formed to have a hexagonal cross-sectional shape.

The connecting member may further include a plurality of annular protrusions formed in an annular shape on an outer circumferential surface of the tie rod engaging portion.

According to another aspect of the present invention, in order to achieve the above object of the present invention,

A tubular tie rod; The two connecting members inserted and coupled to both open ends of the tie rod, respectively; And two ball joint devices respectively coupled to the two connecting members, wherein an outer circumferential surface of the tie rod engaging portion is in surface contact with the inner circumferential surface of the tie rod.

According to another aspect of the present invention,

A tie rod coupling portion coupled to both ends of a pipe-shaped FRP material tie rod in the tie rod assembly to connect the ball joint device, the tie rod coupling portion being coupled to the tie rod; And a ball joint coupling part coupled to the ball joint device, wherein a plurality of projecting pins are formed on an outer circumferential surface of the tie rod coupling part.

According to another aspect of the present invention,

A tubular tie rod; The two connecting members inserted and coupled to both open ends of the tie rod, respectively; And two ball joint devices respectively coupled to the two connecting members, wherein an outer circumferential surface of the tie rod engaging portion is in surface contact with an inner circumferential surface of the tie rod, and the plurality of pins are inserted into the inner circumferential surface of the tie rod, A tie rod assembly is provided.

According to the present invention, all of the objects of the present invention described above can be achieved. Specifically, since the outer circumferential surface of the tie rod coupling portion of the connecting member has a polygonal cross-sectional shape or a plurality of fins protruded from the outer circumferential surface are provided, the coupling force with the tie rod is improved and the conventional problem of weakness of the torsional moment can be solved have.

1 is a view illustrating a structure of a tie rod assembly according to an embodiment of the present invention.
2 is a cross-sectional view showing a cross-sectional structure of a portion where the tie rod, the connecting member, and the ball joint device are combined in the tie rod assembly of FIG.
3 is a perspective view showing the connection member shown in FIG.
4 is a cross-sectional view of the connection member shown in Fig. 3 with respect to the tie-rod coupling portion.
5 is a perspective view illustrating a connecting member according to another embodiment of the present invention.

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

1 shows a tie rod assembly according to an embodiment of the present invention. Referring to FIG. 1, a tie rod assembly 100 according to an embodiment of the present invention includes a tie rod 110, first and second connecting members 120a and 120b, first and second clamps 130a First and second clamp tightening means 140a and 140b and first and second ball joint devices 150a and 150b.

The tie rod 110 has a pipe shape and is made of FRP material. As a result, the tie rod assembly 100 can be made lighter. More specifically, the material of the tie rod 110 is FRP made of glass fiber and a base material of resin, or FRP made of a base material of carbon fiber and resin. Two connecting members 120a and 120b are coupled to both ends of the tie rod 110. [ The tie rod 110 is formed using a mold. In the molding process, the two connecting members 120a and 120b are inserted and integrally joined.

Each of the first and second connecting members 120a and 120b is integrally coupled to the tie rod 110 in such a manner that the tie rod 110 is partially inserted at both ends thereof. The two connecting members 120a and 120b are made of a metal material such as steel and are inserted and integrated with the tie rod 110 in the process of molding the tie rod 110 of the FRP material. Since the two connecting members 120a and 120b have the same configuration, only the first connecting member 120a will be described in detail here.

1 to 3, the first connection member 120a is formed in a tubular shape and made of a steel material. The first linking member 120a has ball joints 121a and tie rod joints 122b formed at both ends thereof with a predetermined interval. The ball joint 121a is formed with a female screw 123a for engagement with the first ball joint device 150a. In addition, the ball joint engaging portion 121a is provided with two cutouts 1211a and 1212b extending at an interval of 180 degrees from the end in the longitudinal direction. In the present embodiment, it is described that two incisions are provided, but the present invention is not limited thereto. For example, only one incision may be provided, or three incisions may be equally spaced (120 degrees apart). An annular groove 1213 extending along the circumferential direction is formed on the outer periphery of the ball joint engagement portion 121a. The ball joint engaging portion 121a is connected to the tie rod engaging portion 122b and protrudes to the outside of the tie rod 110. [ The tie rod engaging portion 122b is inserted into one end of the tie rod 110 in an inserted state. That is, the first connection member 120a is coupled to the tie rod 110 in a state where the outer circumferential surface of the tie rod coupling portion 122b is in contact with the inner circumferential surface of the tie rod 110. The outer circumferential surface of the tie rod engaging portion 122b is formed to have a hexagonal cross-sectional shape as shown in Fig. In the present embodiment, the cross-sectional shape of the outer circumferential surface of the tie-rod engaging portion 122b is described as being hexagonal, but the present invention is not limited to this and may be a polygonal shape other than a hexagonal shape. The tread moment generated between the first linking member 122a and the tie rod 110 is well tolerated by forming the hexagonal shape of the cross-sectional outer circumferential surface of the tie rod engaging portion 122b. In addition, a plurality of annular protrusions 124a are formed on the outer circumferential surface of the tie rod engaging portion 122b so as to protrude in a ring shape. The annular protrusion 124a is inserted into the inner circumferential surface of the tie rod 110 to improve the resistance to axial forces (tensile and compressive force) generated between the first connecting member 122a and the tie rod 110. [

Referring to FIG. 1, each of the first and second clamps 130a and 130b presses the ball joint of the first joint member 120a and the ball joint of the second joint member 120b, 1 ball joint device 150a and the second ball joint device 150b. Since the two clamps 130a and 130b have the same configuration, only the first clamps 130a and 130b will be described in detail here.

1 and 2, the first clamp 130a is made of a steel material and includes an arc-shaped pressing portion 131a surrounding a part of the outer circumferential surface of the ball joint portion 121a of the first connecting member 120a, And two extending walls 132a and 133a extending from both ends in the circumferential direction of the pressing portion 131a and facing each other. The first clamp 130a is positioned at the ball joint engagement portion 121a of the first connection member 120a corresponding to the annular groove 1213 of the first connection member 120a.

Each of the first and second clamp tightening means 140a and 140b tightens and loosens the first clamp 130a and the second clamp 130b. Since the two clamp tightening means 140a and 140b have the same configuration, only the first clamp tightening means 140a will be described in detail here. The first clamp tightening means 140a includes a bolt member 141a and a nut member 142a. The two extending walls 132a and 133a of the first clamp 130a are tightened or loosened by the bolt member 141a and the nut member 142a. When the first clamp 130a is tightened by the first clamp tightening means 140a, the first clamp 130a presses the ball joint engaging portion 121a of the first connecting member 120a, The tightening force is uniformly distributed over the entire portion by the two incisions 1211a and 1212b. A part of the outer periphery of the male screw portion of the bolt member 141a is accommodated in the annular groove 1213 formed in the ball joint engaging portion 121a of the first linking member 120a. Accordingly, since the bolt member 141a is located closer to the first connecting member 120a, the total volume can be reduced.

The first and second ball joint devices 150a and 150b are located at both ends of the tie rod 110 in the longitudinal direction. The first ball joint device 150a is coupled to the tie rod 110 by the first connecting member 120a and the second ball joint device 150b is coupled to the tie rod 110 by the second connecting member 120b. Lt; / RTI > The first ball joint device 150a includes a ball stud 153a having a spherical ball portion (not shown) at its end, a ball seat (not shown) surrounding a ball portion (not shown) of the ball stud 153a, (Not shown), and a circular rod-shaped coupling portion 151a extending from the socket 154a. A male thread 152a is formed on the engaging portion 151a. The male screw 152a of the engaging portion 151a is engaged with the female screw 123a formed on the ball engaging portion 121a of the first connecting member 120a. The second ball joint device 150b has the same structure as that of the first ball joint device 150a and has the same structure as that of the first ball joint 150a and the first connection member 120a, 120b.

5 shows a connecting member according to another embodiment of the present invention. Referring to FIG. 5, the connecting member 220 includes a ball joint engaging portion 121a and a tie rod engaging portion 222b. The ball joint engaging portion 121a is identical in construction to the ball joint engaging portion 121a of the connecting member 120a shown in FIG. 3, and a detailed description thereof will be omitted. The outer circumferential surface of the tie rod engaging portion 222b is formed to have a circular cross-sectional shape, and a plurality of pins 231 protruded from the outer circumferential surface of the tie rod engaging portion 222b. The outer circumferential surface of the engaging portion 222b is in surface contact with the inner circumferential surface of the tie rod 110 and the plurality of pins 231 are inserted into the inner circumferential surface of the tie rod 110. [ The reinforcing fibers of the tie rod 110 are woven between the fins 231 to improve the bonding force between the tie rod 110 and the connecting member 220 so as to withstand loads in all directions such as tensile, compression, and twisting.

Although the present invention has been described with reference to the above embodiments, the present invention is not limited thereto. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

100: tie rod assembly 110: tie rod
120a, 120b: connecting member 130a, 130b: clamp
140a, 140b: Clamp tightening means 150a, 150b: Ball joint device
121a: Ball joint coupling portion 122b: Tie rod coupling portion
124a: annular protrusion 220: connecting member
231:

Claims (6)

1. A connecting member for connecting a ball joint device to both ends of a tie rod-shaped FRP material tie rod in a tie rod assembly,
A tie rod engaging portion coupled to the tie rod; And
And a ball joint engaging portion engaged with the ball joint device,
And the outer circumferential surface of the tie rod coupling portion is formed to have a polygonal cross-sectional shape. The method according to claim 1,
And the outer circumferential surface of the tie rod coupling portion is formed to have a hexagonal cross-sectional shape. The method according to claim 1,
Further comprising a plurality of annular protrusions formed in an annular shape on the outer circumferential surface of the tie rod coupling portion. A tubular tie rod;
Two connecting members according to any one of claims 1 to 3 inserted into both ends of the tie rod, respectively; And
And two ball joint devices respectively coupled to the two connecting members,
And the outer circumferential surface of the tie rod coupling portion is in surface contact with the inner circumferential surface of the tie rod. 1. A connecting member for connecting a ball joint device to both ends of a tie rod-shaped FRP material tie rod in a tie rod assembly,
A tie rod engaging portion coupled to the tie rod; And
And a ball joint engaging portion engaged with the ball joint device,
And a plurality of projecting pins are formed on an outer circumferential surface of the tie rod coupling portion. A tubular tie rod;
Two connecting members according to any one of claims 1 to 3 inserted into both ends of the tie rod, respectively; And
And two ball joint devices respectively coupled to the two connecting members,
Wherein an outer circumferential surface of the tie rod engaging portion is in surface contact with an inner circumferential surface of the tie rod, and the plurality of pins are engaged while being inserted into the inner circumferential surface of the tie rod.
KR1020150127479A 2015-09-09 2015-09-09 Connecting member for tie-rod assembly and tie-rod assembly with the same KR20170030676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150127479A KR20170030676A (en) 2015-09-09 2015-09-09 Connecting member for tie-rod assembly and tie-rod assembly with the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150127479A KR20170030676A (en) 2015-09-09 2015-09-09 Connecting member for tie-rod assembly and tie-rod assembly with the same

Publications (1)

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KR20170030676A true KR20170030676A (en) 2017-03-20

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KR1020150127479A KR20170030676A (en) 2015-09-09 2015-09-09 Connecting member for tie-rod assembly and tie-rod assembly with the same

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112654791A (en) * 2018-09-18 2021-04-13 费德罗-莫格尔汽车零部件有限责任公司 Tie rod assembly connector
KR20230013812A (en) * 2021-07-20 2023-01-27 대성코리아(주) Tie rod of steering apparatus for vehicle and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112654791A (en) * 2018-09-18 2021-04-13 费德罗-莫格尔汽车零部件有限责任公司 Tie rod assembly connector
US11649841B2 (en) * 2018-09-18 2023-05-16 Federal-Mogul Motorparts Llc Tie rod assembly union
KR20230013812A (en) * 2021-07-20 2023-01-27 대성코리아(주) Tie rod of steering apparatus for vehicle and manufacturing method thereof

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