WO2018208272A2 - Bague d'amortissement de vibrations pour des biellettes de suspension - Google Patents

Bague d'amortissement de vibrations pour des biellettes de suspension Download PDF

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Publication number
WO2018208272A2
WO2018208272A2 PCT/TR2017/050721 TR2017050721W WO2018208272A2 WO 2018208272 A2 WO2018208272 A2 WO 2018208272A2 TR 2017050721 W TR2017050721 W TR 2017050721W WO 2018208272 A2 WO2018208272 A2 WO 2018208272A2
Authority
WO
WIPO (PCT)
Prior art keywords
bush
outer shells
inner tube
rubber
cross
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/TR2017/050721
Other languages
English (en)
Other versions
WO2018208272A3 (fr
Inventor
Ali Kamil SERBEST
Kubilay SANCAKSADE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Angst Pfister Gelismis Teknik Cozuemler AS
Original Assignee
Angst Pfister Gelismis Teknik Cozuemler AS
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 Angst Pfister Gelismis Teknik Cozuemler AS filed Critical Angst Pfister Gelismis Teknik Cozuemler AS
Publication of WO2018208272A2 publication Critical patent/WO2018208272A2/fr
Publication of WO2018208272A3 publication Critical patent/WO2018208272A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/393—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type with spherical or conical sleeves
    • 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
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/122—Mounting of torsion springs
    • B60G2204/1224—End mounts of stabiliser on wheel suspension
    • 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
    • B60G2204/41—Elastic mounts, e.g. bushings
    • 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
    • B60G2204/416—Ball or spherical joints
    • 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
    • B60G2206/70—Materials used in suspensions
    • B60G2206/73—Rubber; Elastomers

Definitions

  • the invention relates to a damping bush which connects especially the stabilizer bar and droplinks in the suspension system located at the front and rear parts of the land vehicles, eliminates the vibrations arised in this region and fulfills the torsional and conical angle values that this connection requires.
  • the present bush relates to a bush structure damping undesired mechanical vibrations which could be arised where the bush connects the stabilizer bar and droplinks connecting the stabilizer to the other elements related to wheel by carrying the stabilizer in vehicles.
  • the subjected preloading angle of a bush located in connection point of parts can vary according to the vehicle kinematic.
  • the patent document DE4421 589 mentions a link bar for the spring leg stabilizer on the front axle of the vehicle.
  • each joint comprises a shaft nest protruding and a bearing.
  • E ach bearing is in a rubber-metal bush form. The bearings may differ in angle and can be transformed to the cardan nest in bushes.
  • T he bonding power is obtained by bonding the bush to the stabilizer bar (inner circumferential surface) with the surface pressure on the bonding surface of the bush s hole part produced in a singular form.
  • T he first curve is formed at the opposite one side of the U-shaped part opening on the bracket in bonding and the second curve is shaped at the open side on the hole part of bush.
  • the patent document US 2016272026 mentions ring linkage assembly.
  • the ring linkage assembly is organized to connect safely a first component to a second component
  • the assembly may comprises a first nest which, comprising a first center, describes a first passage and a second nest in a same way. These first and second centers may be located on a common plane.
  • the linkage bar connects the first nest to second nest and, the linkage bar is curved according to the common plane.
  • the object of the invention is to present a damping bush which connects especially the stabilizer bar and droplinks in the front and rear suspension systems of vehicles, eliminates the vibrations arised in this region and provides the torsional and conical angle values that this connection requires.
  • An another object of the invention is to present a damping bush comprising outer shells in at least two pieces which, having a flat cylindrical outer surface and cavities before mounting by standing of the connection zones in a specific distance, allow the mentioned distance of cavities to provide the bush to be tightly located when the bush is mounted to the space formed for itself on the droplink, the bush to hold on the space tightly and a great amount of rubber to be hold inside the inner volume, and a hollow inner tube surrounded by the mentioned outer shells.
  • An another object of the invention is to present a damping bush comprising a volume in which the outer shells extends against to the inner tube from both end portions of the outer shells in a specific slope and specific distance, and which is filled homogeneously with the rubber through that the cross- sectional area at a shell concave-slimming zone on the inner middle part of the outer shells gradually decreases while the inner tube gradually expands outward at a tube convex-expansion zone or the cross-sectional area of the inner tube gradually increases in response to the slimming region.
  • a perspective view of the present bush is given in figure 1.
  • a front view of the present bush according to the view in figure 1 is given in figure 2.
  • FIG. 3 A cross-sectional view taken from vertical axis of the present bush according to the view in figure 1 is given in figure 3.
  • the present invention is a damping bush which connects especially the stabilizer bar and droplinks in the front and rear suspension systems of vehicles, eliminates the vibrations arised in this region and provides the torsional and conical angle values that this connection requires.
  • the suspension configurations damping the vibrations arised in vehicles during cruising comprise generally a stabilizer bar and droplinks by which the ends of the stabilizer bar are connected to the edges.
  • the preloading exposed on the bush (1 ) during mounting which, an undesirable condition caused by the kinematics during the mounting of the stabilizer bar and the droplink to each other, causes different requires from the other bush (1 ) solutions in the torsional and conical angle values to emerge.
  • damping of the vibrations emerged by the connection the mentioned stabilizer bar and droplinks is possible by that the connection bush (1 ) has a torsional angle until 80° (e 40°) in total and a conical angle of 1 1 ° for both directions in total.
  • the present bush (1 ) is exposed to a preload during mounting.
  • the preloading angle is change according to the vehicle kinematics, and for example, a preload of 15° according to 90° is applied on the bush (1 ) when the angle between axises is given as 75°.
  • the present bush (1 ) lets the conical movement with the conical angle of 1 1 ° (5° for one direction (+) and 6° for other direction (-)) in total.
  • FIG. 1 A perspective view of the present bush (1 ) is given in figure 1.
  • a hollow inner tube (10) at its center is surrounded by the outer shells (20) in at leasttwo pieces.
  • the outershells (20) have a flat cylindrical outer surface and their merging zone (21 ) stand in a specific distance to each other. The distance allows the bush (1 ) to be located tightly when the bush is mounted to the space formed for itself on the droplink and allows the bush (1 ) to hold on the space.
  • the cross-sectional views of the present bush (1 ) are given in figure 3 and 4.
  • the cross-sectional view in figure 4 is from the middle (from the cross-section of the horizontal axis of figures 1 and 2) of the outer shells (20) of the bush (1 ) before mounting while the cross-sectional view given in figure 3 is from the merging zone (21 ) of the outer shells (20) of the bush (1 ) before mounting too.
  • T hus the volume formed for the rubber (40), how the rubber (40) fills the volume and so how the functional qualifications expected from the bush (1 ) are provided are seen better via the cross-sectional view in figure 4.
  • the outer shells (20) described here elongates from both end portions (22) to innertube (10) at center with a specific slope in a specific distance.
  • T he inner tube (10) extending in center rises outwardly with a certain slope corresponding to the middle part of the mentioned outer shells (20), and thus increases the tube diameter in a specific distance inside.
  • the cross-sectional thickness of the volume filled by the rubber (40) is equal everywhere inside with the part referred as the inflated core of the inner tube (10) and the slimming on the corresponding region of the outer shells (20), it is provided thatthis section is notflat but takes a curved appearance that rises and falls with an outward slope by remaining only in the interior.
  • the rubber (40) remaining inside has a constant thickness but a height similar to a sinusoidal curve along the horizontal axis of the bush (1 ).
  • the rubber (40) to be formed like that the inner tube (10) has a convex height on its middle portions while the outer shells (20) has a narrowing in the cross-section area on its regions corresponding to these portions.
  • the mentioned outer shells (20) are thick at its tip portions while the cross-sectional area towards the inner portions decreases with a certain slope.
  • the cross-sectional area of the steel inner tube (10) at the portion where the cross-sectional area of the mentioned outer shells (20) decreases and so it is formed an inner space here increases outwardly in a compatible form to other.
  • a certain amount of rubber (40) is injected and filled into the rubber location space (30) formed between these two portions.
  • the injected rubber (40) forms a filler material and, connects the mentioned outer shells (20) and the center inner tube (10) to each other by adhering to these parts.
  • S o a rubber (40) structure having a homogeneous cross-sectional area between the inner tube (10) and the outer shells (20) however, having a shape that is not flat but inclined as in figure 4 is formed.
  • the cross-sectional area of the inner tube (10) expands outward with a tube-increasing slope (1 1 ) corresponding to the middle portions of the bush (1 ) and reaches a tube-top point (12). Having a certain distance at the pipe-top point (12) or coming to the initial level of the cross-sectional area of the inner tube (10) with a tube-decreasing slope (13) may vary according to the size and function of the bush (1 ). S imilarly, the inward cross-sectional area of the outer shells (20) decreases with a shell- decreasing slope (25) corresponding to this cross-section change in the inner tube (10) and reaches a shell-top point (24).
  • the cross-sectional area of the outer shells (20) reaches the initial thickness level with a shell-increasing slope (23) after the mentioned shell-top point (24).
  • the mentioned shell-decreasing slope (25) and the tube-increasing slope (1 1 ) at the inner tube (10), also the shell-increasing slope (23) and the tube-decreasing slope (13) at the inner tube (10) are preferably equal slopes or too close to each other.
  • T he rubber (40) which, having a sloping structure in the bush (1 ) inner portion by means of these slopes, has a mechanical structure that could meet the torsional and conical angle expectations.
  • the volume to be filled with rubber (40) is obtained by that the cross-sectional area at a shell concave-slimming (26) zone on the inner middle part of the outer shells (20) gradually decreases while the inner tube (10) gradually expands outward at a tube convex-expansion zone (14) or the cross-sectional area of the inner tube (10) gradually increases in response to the slimming region.
  • This geometrical structure of the present invention provides the rubber (40) located in bush (1 ) inner portion to be not flat, but in a sloped structure by an inward space formed with the decreasement of the cross-sectional area in inward portions of the mentioned outer shells (20) and outwardly increasement of the cross-sectional area in the corresponding inner tube (10) portion, and so the rubber (40) structure is trapped between the end portions (22) of the outer shells (20) and the inner tube (10).
  • T his geometry provides significant torsional capacity, axial movement restriction ability and mounting advantages.
  • the unit shape change (strain) is accomplished without tearing and deforming of the rubber (40). Thanks to the innervolume geometry formed by the inner tube (10) at center and the outer shells (20) surrounding it and also to the rubber location gaps (30) between the outer shells (20), it is provided thatthe present bush (1 ) accomplishes the expected function without any exceeded load at the adhering regions of this parts with the rubber (40), consequently without an stickiness weakness due to the increasement of the preloaded rubber (40) amount in the inner volume.
  • the spaces between said least two outer shells (20) allow the inner volume to be filled with more rubber (40) and the bush (1 ) to be fitted to its nest with shrink fit manner by the reducement in the bush (1 ) periphery resulted from the squeezing of the rubber (40) during mounting.
  • the inner volume filled with the rubber (40) before mounting is thicker to allow for squeezing after mounting.
  • the inner volume decreases by preloading of the rubber (40) located here when the bush (1 ) is compressed from the outer shells (20).
  • the strain of the bush can be held at appropriate levels for the function of the part by using the squeezing of rubber (40).
  • the outer shells (20) on the cylindrical structure have least two parts located with a certain distance.
  • the outer shell edges (27) on the outer surface of outer shells (20) before mounting stand at a certain distance from each other.
  • the outer shell edges (27) form a flat cross-sectional area for the rubber (40) in the inner portion to be assembled during mounting.
  • T hese flat areas on the outer shell edges (27) comprises a smooth surface which allows them combined mutually by allowing the preloading at one axis for the bush (1 ) to seating on the nest.
  • the present bush (1 ) By the closing of the distance after mounting, it is possible that the present bush (1 ) to fit to the space formed for itself with shrink fit manner.
  • S o the bush (1 ) is mounted to the space without any plastic deformation since the bush (1 ) diameter decreases at one axis while there is not any decreasement at the other axis during mounting thanks to the spaced positions of the outer shell edges (27).
  • the outer shells (20) were made of a single piece, it could be possible to obtain a similar compression by subjecting the piece to plastic deformation. But, in this case, the rubber (40) material would expand sideways by the compressing of the piece from the outside, in which case it would not be possible to obtain the desired torsional forces.
  • the outer surfaces on the leasttwo pieced outer shell (20) structure of present bush (1 ) are not subjected to plastic deformation. While the plastic deformation may provide a maximum compression of 1 -2 mm in diameter, the bush (1 ) is fitted with shrink fit manner by a compression of 5-6 mm in diameter thanks to the least two pieced outer shell (20) of the present bush (1 ).
  • the present bush (1 ) can provide the conical angle values expected in the movement of the inner tube (10) along the axis thanks to the mentioned innervolume geometry. It is expected that such a bush (1 ) lets the conical movement with the conical angle of 1 1 ° (5° for one direction (+) and 6°for other direction (-)) in total and does not lose its functionality during this operation.
  • the expected torsional angle is provided by a spring comprising two pieced- outer shell (20) structure.
  • this situation causes the motion at center to relax.
  • T he excess amount of rubber (40) here allows a distance to be formed through which the part can extend.
  • this motion ability is an undesired situation, so it is necessary to be restricted.
  • the cross-sectional area of the inner tube (10) at center is increased by expanding its diameter toward the outer shells (20) in the inner portion with a certain distance while the cross-sectional area of the outer shells (20) corresponding the expansion region is narrowed by slimming of shells inward and thus, it is provided that the rubber (40) is trapped in this area.
  • the outward increasement of the cross-sectional area in the middle portion of the inner tube (10) at center is achieved in a certain slope and the opposite of same slope is used for the inward decreasement in the cross-sectional area of the outer shells.
  • the two-pieced structure was used to determine a compression ratio between the stabilizer bar and the bush, where the torsional motion is very limited.
  • the two-pieced outer shell (20) of the present invention by placing more rubber in the innervolume allows the unit shape change (strain) level to be kept in low and thereby the torsional angle to increase.
  • the steel outer shells (20) located outside are completely attached to the inner rubber (40), not attached to any other component. S o, the conical motion is brought to a state allowing an increasement of up to 1 1 ° from 2-3° in the prior art while the axial motion is restricted.
  • the present bush (1 By means of the present bush (1 ), it is possible to meet in a very small volume but significant kinematic expectations at point where the bush (1 ) connects the stabilizer bar and the droplinks, which are the balance and vibration damping elements, to each other.
  • the connection bolt supplies the location and torque sufficiencies since the tube located center of the bushes (1 ) used at these points is thicker (as sectional area), these issues were not taken into consideration.
  • the steel materials that can be subjected to heat treatment for increasing its strength are used in the inner tube (10) to provide the expected torque values during mounting despite of the thin wall thickness (sectional area) of the inner tube (10).
  • the strength values of these steel materials which can meet very high torque values despite of the very thin section could be increased with heat treatment to over the torque value of 700 Newton meter.
  • the bush connecting the stabilizer bar and the droplinks is a full circle or made of full diameter material, it causes plastic deformation problems during mounting to this point.
  • One of the most important advantages of the present bush (1 ) is that there is any change in the one axis of the bush (1 ) while the other axis of the bush (1 ) decreases when a compression is applied to the least two outer shells (20) surrounding the bush (1 ) in a cylindrical form with a certain interval. S o, the bush (1 ) can be mounted without plastic deformation.
  • the meaning of the plastic deformation described here is that after mounting of bush (1 ) to its space, the outer part of the bush (1 ) is broken or is forced to change its shape by squeezing. Here, it does not require a plastic deformation thanks to these new innovations added to the bush.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Springs (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention porte sur une bague d'amortissement (1) qui relie en particulier la barre stabilisatrice et les biellettes dans les systèmes de suspension avant et arrière de véhicules, élimine les vibrations produites dans cette région et fournit les valeurs d'angle de torsion et de conicité que cette liaison nécessite. La présente bague (1) comprend des coques externes (20) formées d'au moins deux parties qui, du fait qu'elles présentent une surface externe cylindrique plate et des cavités avant montage produites par le positionnement de zones de rencontre (21) sur une distance spécifique, permettent à la distance mentionnée des cavités de disposer la bague (1) de manière serrée lorsque la bague (1) est montée sur l'espace formé pour elle-même sur la biellette, de maintenir la bague (1) sur l'espace de manière serrée et de maintenir une grande quantité de caoutchouc (40) à l'intérieur du volume interne, et un tube interne creux (10) entouré par les coques externes mentionnées (20). De plus, la bague (1) a la caractéristique de comprendre un volume dans lequel les coques externes (20) s'étendent contre le tube interne (10) depuis les deux parties d'extrémité (22) des coques externes avec une pente spécifique et sur une distance spécifique, et qui est rempli de manière homogène de caoutchouc (40) de sorte que l'aire de la section transversale au niveau d'une zone décroissante concave (26) sur la partie centrale interne des coques externes (20) diminue progressivement tandis que le tube interne (20) augmente progressivement vers l'extérieur au niveau d'une zone de croissance convexe (14) ou que l'aire de la section transversale du tube interne (10) augmente progressivement en réponse à la région décroissante. Étant donné que le diamètre de la bague (1) est réduit sur un axe tandis que l'autre ne diminue pas de taille du fait des positions espacées des bords (27) des coques externes l'une par rapport à l'autre, la bague (1) peut être montée dans la cavité sans aucune déformation plastique.
PCT/TR2017/050721 2016-12-30 2017-12-29 Bague d'amortissement de vibrations pour des biellettes de suspension Ceased WO2018208272A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2016/20280 2016-12-30
TR2016/20280A TR201620280A1 (tr) 2016-12-30 2016-12-30 Süspansi̇yon bağlanti kollari i̇çi̇n bi̇r ti̇treşi̇m sönümleme burcu

Publications (2)

Publication Number Publication Date
WO2018208272A2 true WO2018208272A2 (fr) 2018-11-15
WO2018208272A3 WO2018208272A3 (fr) 2019-01-24

Family

ID=64102795

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2017/050721 Ceased WO2018208272A2 (fr) 2016-12-30 2017-12-29 Bague d'amortissement de vibrations pour des biellettes de suspension

Country Status (2)

Country Link
TR (1) TR201620280A1 (fr)
WO (1) WO2018208272A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112879417A (zh) * 2021-01-29 2021-06-01 中国重汽集团济南动力有限公司 一种可调刚度的球关节及推力杆总成

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010040326A1 (en) * 1999-06-14 2001-11-15 Lord Corporation Resilient member with deformed element and method of forming same
JP4560376B2 (ja) * 2004-10-29 2010-10-13 東海ゴム工業株式会社 スタビライザブッシュ
DE102006006929A1 (de) * 2006-02-14 2007-08-16 Muhr Und Bender Kg Koppelstange für eine Stabilisatoranordnung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112879417A (zh) * 2021-01-29 2021-06-01 中国重汽集团济南动力有限公司 一种可调刚度的球关节及推力杆总成

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Publication number Publication date
WO2018208272A3 (fr) 2019-01-24
TR201620280A1 (tr) 2018-07-23

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