KR20160059791A - Stabilizer for an automobile - Google Patents

Stabilizer for an automobile Download PDF

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Publication number
KR20160059791A
KR20160059791A KR1020140161758A KR20140161758A KR20160059791A KR 20160059791 A KR20160059791 A KR 20160059791A KR 1020140161758 A KR1020140161758 A KR 1020140161758A KR 20140161758 A KR20140161758 A KR 20140161758A KR 20160059791 A KR20160059791 A KR 20160059791A
Authority
KR
South Korea
Prior art keywords
bearing
circumferential surface
outer circumferential
inner pipe
cover unit
Prior art date
Application number
KR1020140161758A
Other languages
Korean (ko)
Inventor
오헌영
Original Assignee
현대모비스 주식회사
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 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020140161758A priority Critical patent/KR20160059791A/en
Publication of KR20160059791A publication Critical patent/KR20160059791A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/055—Stabiliser bars
    • B60G21/0551—Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/418—Bearings, e.g. ball or roller bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/012—Hollow or tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs
    • B60G2206/427—Stabiliser bars or tubes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The present invention relates to a stabilizer for a vehicle. The stabilizer can prevent foreign matter from entering a bearing. According to an embodiment of the present invention, the stabilizer, which is used in a vehicle, includes: an inner pipe which has bolsters protruding from the outer peripheral surface and latching grooves formed on both sides of the ball stud in a circumferential direction; a bearing which covers the outer peripheral surface of the bolsters and is arranged to enable rotation of the inner pipe; a bearing cover unit which covers the outer peripheral surface of the bearing and has a buffer member arranged therein; and a sealing member which covers the outer peripheral surface of the inner pipe, has a side inserted into the space between the inner pipe and the bearing cover unit to seal the bearing, and has the other side caught by the latching groove.

Description

STABILIZER FOR AN AUTOMOBILE < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stabilizer of an automobile, and more particularly to a stabilizer of a vehicle equipped with a bush for mounting the stabilizer bar on the vehicle body.

In general, a stabilizer bar of a vehicle is a kind of torsion spring that is held by a bush to maintain balance of the vehicle body while suppressing roll motion of the vehicle body when the vehicle turns or rough road surface.

The mounting bush for fixing the stabilizer bar to the vehicle body includes a rubber bush attached to the stabilizer bar and a mounting bracket fixed to the vehicle body while covering the rubber bush.

Wherein when the torsional load is applied to the stirrer bar, the rubber bushes are prevented from rotating together with the stirrer bar so that the rotational rigidity of the rubber bushes is greater than the frictional force generated between the rubber bushes and the stirrer bar, Lt; / RTI >

As a result, noise is generated and the rubber bushes are worn easily. The wear and deformation of the rubber bushes cause a gap between the stabilizer bars and the rubber bushes, and foreign substances are introduced into the gaps There was a problem.

In order to solve the above problems, a technique of applying a pillow join to the stirrer bar has been proposed. The pillow joint forms a ball stud on an outer circumferential surface of an inner pipe connected to the stirrer bar, and a bearing and a rubber bush are mounted on an outer circumferential surface of the ball stud to prevent the rubber bush from being easily damaged by the bearing.

However, in the pillow joint, it is important to prevent foreign matter from flowing into the bearing, because foreign matter is introduced into the bearing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stabilizer of an automobile in which foreign substances are prevented from flowing into a bearing.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

To achieve the above object, according to an embodiment of the present invention, an automobile stabilizer includes: an inner pipe having a ball stud protruding from an outer circumferential surface thereof and having an engagement groove formed circumferentially on both sides of the ball stud, A bearing cover unit which surrounds the outer circumferential surface of the stud and is arranged so that the inner pipe can be rotated; a bearing cover unit which surrounds the outer circumferential surface of the bearing and is coupled to the outer circumferential surface of the bearing and in which a buffer member is disposed; And a sealing member inserted at one side between the inner pipe and the bearing cover unit to seal the bearing and the other end to be engaged with the engagement groove.

The details of other embodiments are included in the detailed description and drawings.

The stabilizer of the automobile according to the present invention has the effect that the sealing member is prevented from being separated from the inner pipe and the foreign matter is prevented from being introduced into the bearing because the sealing member is caught in the retaining groove formed in the inner pipe have.

In addition, since the first concavo-convex is formed on the outer circumferential surface of the inner pipe, and the second concavo-convex which engages with the first concavo-convex is formed on the inner circumferential surface of the sealing member, Thereby preventing foreign matter from flowing into the bearing.

Since the third unevenness is formed on the outer circumferential surface of the sealing member and the fourth uneven portion engaging with the third unevenness is formed on the inner circumferential surface of the bearing cover unit, Thereby preventing foreign matter from flowing into the bearing.

In addition, since the retaining ring coupled to the sealing member is hooked to the fourth concavity and convexity, the sealing member is prevented from being detached from the inner pipe, thereby preventing foreign matter from being introduced into the bearing.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a vehicle stabilizer according to an embodiment of the present invention, Fig.
FIG. 2 is an exploded perspective view of the pillow joint shown in FIG. 1,
Fig. 3 is a detailed view of part A divided by a dotted line in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a vehicle stabilizer according to an embodiment of the present invention will be described with reference to the drawings.

1 is a view showing a vehicle stabilizer according to an embodiment of the present invention.

1, a vehicle stabilizer according to an embodiment of the present invention includes a stabilizer bar 100, a pillow joint 200 surrounding an outer circumferential surface of the stabilizer bar 100, a pillow joint 200, And a mounting bracket 300 coupled to the vehicle body.

FIG. 2 is an exploded perspective view of the pillow joint shown in FIG. 1, and FIG. 3 is a detailed view of an A portion divided by a dotted line in FIG.

1 to 3, the pillow joint 200 includes an inner pipe 10, a bearing 20, a bearing cover unit 30, and a sealing member 40.

The inner pipe 10 is made of a metal material and is hollow. The inner pipe 10 is engaged with the stabilizer bar 100 at both ends and rotated together when the stirrer bar 100 is twisted. A ball stud 15 protrudes from the outer surface of the inner pipe 10. The ball stud 15 is formed in the middle of the length of the inner pipe 10, and the outer circumferential surface is formed into a curved surface.

On the outer circumferential surface of the inner pipe 10, a latching groove 12 is formed along the circumferential direction on both sides of the ball stud 15 as a reference. The engaging groove 12 is formed at a position spaced apart from the ball stud 15 by a predetermined distance.

The bearing 20 is formed of a plastic material so as to surround the ball stud 15. The bearing 20 is disposed so that the inner circumferential surface thereof is spaced apart from the ball stud 15 so that the inner pipe 10 can be rotated. It is preferable that grease be filled between the outer circumferential surface of the ball stud 15 and the inner circumferential surface of the bearing 20.

The outer circumferential surface of the bearing 20 is formed flat in the longitudinal direction and the inner circumferential surface thereof is formed into a curved surface corresponding to the curved surface of the outer circumferential surface of the ball stud 15.

The bearing 20 includes a first bearing 22 disposed on one side with respect to the center of the ball stud 15 and a second bearing 24 disposed on the other side of the center of the ball stud 15 . The first bearing 22 is inserted at one end of the inner pipe 10 and surrounds the outer circumference half of the ball stud 15 and the second bearing 24 is inserted at the other end of the inner pipe 10 to form the ball stud 15, The other half of the outer circumference of the outer circumference.

The bearing cover unit (30) surrounds the outer peripheral surface of the bearing (20) and is coupled to the outer peripheral surface of the bearing (20). A buffer member (34) is disposed inside the bearing cover unit (30).

The bearing cover unit 30 includes a bearing case 32, a buffer member 34, and an outer pipe 36.

The bearing case 32 surrounds the outer circumferential surface of the bearing 20 and is coupled to the outer circumferential surface of the bearing 20 by plastic injection molding.

The outer circumferential surface of the bearing case 32 has a shape protruding in the center thereof. The outer circumferential surface of the bearing case 32 is formed such that its center and both ends are flat in the longitudinal direction, and the portion connecting the center and both ends is formed in a curved surface.

The inner peripheral surface of the bearing case 32 is formed so as to be flat in the longitudinal direction corresponding to the outer peripheral surface of the bearing 20 in the center. On the inner circumferential surface of the bearing case 32, two protrusions 32a protruding from the center are formed. The protrusion 32a partially engages the end of the bearing 20 and is engaged with the end of the bearing 20. [ The end portion of the bearing 20, which is not engaged with the projection 32a, is sealed by a sealing member 40 described later. The protruding portion 32a is in close contact with the outer peripheral surface of the sealing portion 42 of the sealing member 40.

The buffer member (34) surrounds the outer peripheral surface of the bearing case (32). The buffer member 34 is formed of a rubber material and is joined to the outer circumferential surface of the bearing case 32 by a vulcanization bonding method. The inner circumferential surface of the buffer member (34) is formed in a shape corresponding to the outer circumferential surface of the bearing case (32). Both ends of the cushioning member (34) are each embedded inward to form a curved surface.

The outer pipe (36) surrounds the outer peripheral surface of the buffer member (34). The outer pipe 36 is formed of a plastic material. The outer pipe 36 is inserted into the mold when the buffer member 34 is molded and is coupled to the outer circumferential surface of the buffer member 34 by an insert injection method.

The sealing member 40 is formed of a rubber material and surrounds the outer peripheral surface of the inner pipe 10. The sealing member 40 is disposed between the inner pipe 10 and the bearing cover unit 30. [

One side of the sealing member 40 is inserted between the inner pipe 10 and the bearing cover unit 30 to seal the bearing 20 and the other side is engaged with the engaging groove 12 formed in the inner pipe 10.

One of the sealing members 40 is fitted into one end of the inner pipe 10 to seal the first bearing 22 between the inner pipe 10 and the bearing case 32, Is fitted to the other end of the pipe (10) to seal the second bearing (24) between the inner pipe (10) and the bearing case.

The sealing member 40 includes a sealing portion 42 inserted between the inner pipe 10 and the bearing cover unit 30 to seal between the inner pipe 10 and the bearing cover unit 30, An extension 44 extending in the longitudinal direction of the inner pipe 10 and spaced radially from the bearing cover unit 30 and engaging with the engagement groove 12 formed in the inner pipe 10, . The sealing portion 42 does not come out between the inner pipe 10 and the bearing cover unit 30 because the extension portion 44 is engaged with the engagement groove 12. [

The extended portion 44 is formed to be thinner than the sealing portion 42 so that the operator presses the sealing portion 42 between the inner pipe 10 and the bearing case 32 and then presses the outer peripheral surface 42 of the extended portion 44 So that it can be easily caught in the catching groove 12. The depth of the engaging groove 12 is equal to the thickness of the end portion of the extending portion 44. When the extended portion 44 is engaged with the engaging groove 12, So that a step is not formed on the outer circumferential surface of the flange 44.

A first protrusion 14 is formed on the outer circumferential surface of the inner pipe 10 and a second protrusion 41 engaging with the first protrusion 14 is further formed on the inner circumferential surface of the sealing portion 42, 42 are prevented from escaping between the inner pipe 10 and the bearing case 32.

A third unevenness 43 is further formed on the outer peripheral surface of the sealing portion 42 and a fourth unevenness 32b engaging with the third unevenness 43 is formed on the inner peripheral surface of the protruding portion 32a formed in the bearing case 32 So as to more reliably prevent the sealing portion 42 from escaping between the inner pipe 10 and the bearing case 32.

Further, a metal retaining ring 45 is disposed on the sealing portion 42. [ The stationary ring 45 is partially disposed inside the sealing portion 42 and is coupled to the stationary ring 45 and has one end protruding from the outer circumferential surface of the sealing portion 42 and engaged with the fourth concave and convex portions 32b. Therefore, it is possible to more reliably prevent the sealing portion 42 from escaping between the inner pipe 10 and the bearing case 32.

A manufacturing process of the pillow joint 200 having the above-described structure will be described below.

In the first step, the buffer member 34 is molded in the mold. When the cushioning member 34 is molded, the outer pipe 36 is insert-injected into the mold so that the buffer member 34 and the outer pipe 36 are integrated.

In the second step, the casting is put into the mold and the inner pipe 10 is molded to form the first protrusions 14 and the engaging grooves 12 on the outer circumferential surface of the inner pipe 10. In the forging process of the inner pipe 10, a step (not shown) is inserted into the inner pipe 10, and the inner circumferential surface of the inner pipe 10 is radially expanded by the forging device to form the ball stud 15 .

In the third step, the first bearing 22 and the second bearing 24 are formed by plastic injection molding in the mold.

The fourth step forms the sealing member 40 in the mold. When the sealing member 40 is molded, the fixing ring 45 is insert-injected into the mold so that the sealing member 40 and the fixing ring 45 are integrated. Of course, in the mold, a second unevenness 41 is formed on the inner circumferential surface of the sealing portion 42 of the sealing member 40, and a third unevenness 43 is formed on the outer circumferential surface of the sealing portion 42.

The steps of the first to fourth steps may be reversed.

In the fifth step, the first bearing (22) completed in the third step is inserted into one end of the inner pipe (10) completed in the second step to push the ball stud (15) in the direction of the ball stud The other end of the inner pipe 10 completed in the second step is pushed in the direction of the ball stud 15 by sandwiching the second bearing 24 completed in the third step and the other end of the ball stud 15 And surrounds the outer circumferential surface of the ball stud 15 with the bearing 20.

In the sixth step, the inner pipe 10 and the bearing 20 completed in the fifth step are inserted into a metal mold and the bearing case 32 is plastically molded on the outer peripheral surface of the bearing 20. At this time, the fourth concave and convex portions 32b are formed on the inner peripheral surface of the protruding portion 32a of the bearing case 32. [

In the seventh step, the buffer member 34 completed in the first step is vulcanized and adhered to the outer peripheral surface of the bearing case 32 completed in the sixth step.

In the eighth step, two sealing members 40 completed in the fourth step are prepared, one of the sealing members 40 is inserted into one end of the inner pipe 10 and is pushed toward the bearing 20, The first concave and convexes 14 and the second concave and convex are engaged with each other and the third concave and convex 43 and the fourth concave and convex portions 32b are engaged with each other by pressing the sealing portion 42 between the concave and convex portions 10 and 32a, Engage with each other, and the fixing ring 45 is caught by the fourth concave and convex portions 32b. Thereafter, the outer peripheral surface of the extended portion 44 is pressed so that the end portion of the extended portion 44 is caught by the retaining groove 12 formed in the inner pipe 10.

The other one of the two sealing members 40 is fitted to the other end of the inner pipe 10 and is pushed toward the bearing 20 to press the sealing portion 42 between the inner pipe 10 and the protruding portion 32a The first irregularities 14 and the second irregularities 41 are engaged with each other and the third irregularities 43 and the fourth irregularities 32b are engaged with each other and the fixing ring 45 is engaged with the fourth irregularities 32b, . Thereafter, the outer peripheral surface of the extended portion 44 is pressed so that the end of the extended portion 44 is caught in the engagement groove 12 formed in the inner pipe 10, thereby completing the assembly.

As described above, the stabilizer of the automobile according to the present invention is characterized in that the sealing member 40 is engaged with the engagement groove 12 formed in the inner pipe 10, so that the sealing member 40 is separated from the inner pipe 10 So that the foreign matter does not flow into the bearing 20.

The first concave and convex portions 14 are formed on the outer circumferential surface of the inner pipe 10 and the second concave and convex portions 41 engaged with the first concave and convex portions 14 are formed on the inner circumferential surface of the sealing member 40, (40) is prevented from being detached from the inner pipe (10), so that foreign matter does not flow into the bearing (20).

The third unevenness 43 is formed on the outer peripheral surface of the sealing member 40 and the fourth unevenness 32b engaged with the third unevenness 43 is formed on the inner peripheral surface of the bearing cover unit 30 , The sealing member 40 is prevented from being detached from the inner pipe 10, so that foreign matter does not flow into the bearing 20.

The sealing member 40 is prevented from being separated from the inner pipe 10 because the retaining ring 45 coupled to the sealing member 40 is engaged with the fourth protrusions 32b, So that foreign matter does not flow.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: inner pipe 12:
14: first unevenness 15: ball stud
20: Bearing 30: Bearing cover unit
32: Bearing case 32a:
32b: fourth unevenness 34: buffer member
36: outer pipe 40: sealing member
41: second unevenness 42: sealing portion
43: third unevenness 44: extension part
45: Retaining ring

Claims (9)

An inner pipe having a ball stud protruding from an outer circumferential surface thereof and having an engaging groove formed circumferentially on both sides of the ball stud;
A bearing surrounding the outer periphery of the ball stud and disposed so that the inner pipe can be rotated;
A bearing cover unit that surrounds the outer circumferential surface of the bearing and is coupled to an outer circumferential surface of the bearing and has a buffer member disposed therein; And
And a sealing member surrounding the outer circumferential surface of the inner pipe and having one side inserted between the inner pipe and the bearing cover unit to seal the bearing and the other side to engage with the engagement groove. The method according to claim 1,
Wherein the sealing member comprises:
A sealing part inserted between the inner pipe and the bearing cover unit to seal between the inner pipe and the bearing cover unit,
And an extension portion extending in the longitudinal direction of the inner pipe at the sealing portion and radially spaced apart from the bearing cover unit, the extension portion being engaged with the engagement groove. The method of claim 2,
Wherein the extending portion is formed to be thinner than the sealing portion. The method of claim 2,
And the depth of the engagement groove is equal to the thickness of the end portion of the extended portion. The method of claim 2,
And a protruding portion which is in close contact with an outer circumferential surface of the closed portion is formed on an inner circumferential surface of the bearing cover unit. The method according to claim 1,
A first irregularity is further formed on an outer circumferential surface of the inner pipe,
And a second irregularity engaging with the first irregularities is formed on an inner circumferential surface of the sealing member. The method according to claim 1,
A third unevenness is formed on the outer circumferential surface of the sealing member,
And a fourth uneven portion engaged with the third uneven portion is formed on an inner peripheral surface of the bearing cover unit. The method of claim 7,
Further comprising a fixing ring coupled to the sealing member and having one end protruding from the outer circumferential surface of the sealing member, the fixing ring being engaged with the fourth concavoconvex. The method according to claim 1,
The bearing cover unit
A bearing case surrounding the outer circumferential surface of the bearing and coupled to an outer circumferential surface of the bearing,
A cushioning member surrounding the outer circumferential surface of the bearing case and coupled to an outer circumferential surface of the bearing case;
And an outer pipe surrounding the outer circumferential surface of the buffer member and coupled to an outer circumferential surface of the buffer member.
KR1020140161758A 2014-11-19 2014-11-19 Stabilizer for an automobile KR20160059791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140161758A KR20160059791A (en) 2014-11-19 2014-11-19 Stabilizer for an automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140161758A KR20160059791A (en) 2014-11-19 2014-11-19 Stabilizer for an automobile

Publications (1)

Publication Number Publication Date
KR20160059791A true KR20160059791A (en) 2016-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140161758A KR20160059791A (en) 2014-11-19 2014-11-19 Stabilizer for an automobile

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220036664A (en) * 2020-09-16 2022-03-23 주식회사 센트랄 Pillow ball of Cross Axis Ball Joint and Manufacturing Method Thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220036664A (en) * 2020-09-16 2022-03-23 주식회사 센트랄 Pillow ball of Cross Axis Ball Joint and Manufacturing Method Thereof

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