WO2020083589A1 - Partie intérieure pour une articulation moléculaire d'un bras de suspension - Google Patents

Partie intérieure pour une articulation moléculaire d'un bras de suspension Download PDF

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Publication number
WO2020083589A1
WO2020083589A1 PCT/EP2019/075581 EP2019075581W WO2020083589A1 WO 2020083589 A1 WO2020083589 A1 WO 2020083589A1 EP 2019075581 W EP2019075581 W EP 2019075581W WO 2020083589 A1 WO2020083589 A1 WO 2020083589A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner part
ball piece
sealing
axial direction
spherical bearing
Prior art date
Application number
PCT/EP2019/075581
Other languages
German (de)
English (en)
Inventor
Timo Küpker
Christian Gravemeyer
Werner Schmudde
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2020083589A1 publication Critical patent/WO2020083589A1/fr

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Classifications

    • 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
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/005—Ball joints
    • 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
    • F16F1/3842—Method of assembly, production or treatment; Mounting thereof
    • 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
    • B60G2206/10—Constructional features of arms
    • B60G2206/11—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link
    • 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
    • B60G2206/10—Constructional features of arms
    • B60G2206/121—Constructional features of arms the arm having an H or X-shape
    • 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
    • B60G2206/10—Constructional features of arms
    • B60G2206/124—Constructional features of arms the arm having triangular or Y-shape, e.g. wishbone
    • 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
    • F16F1/3807—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 characterised by adaptations for particular modes of stressing
    • F16F1/3814—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 characterised by adaptations for particular modes of stressing characterised by adaptations to counter axial forces

Definitions

  • the invention relates to an inner part for a molecular joint of a suspension arm and a suspension arm with a molecular joint, and to a method for producing an inner part for a molecular joint, according to the preambles of the independent patent claims.
  • Molecular joints which are also referred to as claw joints, are known from the prior art and have a housing and an inner part, the inner part being fixed in the housing under pretension in the installed state.
  • the housing itself is usually part of a chassis handlebar.
  • the inner part contains a ball piece extending in its axial direction, which acts as an axis of the molecular joint.
  • the ball piece has an, at least essentially, spherical bearing area, which is encircled by an integral elastomer body. The ball piece can be moved relative to the housing under the action of force, the material of the elastomer body having restoring properties which after the removal of the
  • Molecular joints are frequently used in motor vehicles, in particular commercial vehicles for the transport of people and / or goods, and there they connect, for example, chassis control arms to a vehicle frame.
  • the elastomer body compensates for axial and / or radial and / or torsional and / or cardanic pivoting of the ball piece relative to the accommodating housing by molecular deformation.
  • a rigid axle can be connected to a vehicle frame in an articulated manner via chassis links which are provided with molecular joints.
  • a molecular joint known as a spherical bearing
  • the molecular joint has a housing and a ball piece referred to as a metallic inner part, as well as an elastomer body arranged between the two.
  • the elastomer body In an assembled state, the elastomer body is clamped axially between two sheet metal rings, which are also referred to as support rings.
  • the ball piece has one in its axial center essentially spherical bearing area on that of the one-piece
  • the elastomer body is encircled in a ring.
  • Such elastomer bodies are generally manufactured in series production using the elastomer injection molding process. Elastomers are very thin in the flow area and have a very low viscosity in this state. It is therefore necessary that the sealing surfaces on the ball-piece side on both sides of the spherical bearing area have a relatively high dimensional accuracy and at the same time a relatively high surface quality in order to prevent the elastomer compound, which is very thin in this state, from escaping during the elastomer injection molding.
  • Spherical pieces which are designed as forged parts, in particular drop-forged parts, and have a relatively low dimensional accuracy and surface quality due to the manufacturing process, cannot therefore be left in the raw state in the area of the sealing surfaces. Rather, subsequent machining, usually turning, of the sealing surfaces is required in order to achieve the required dimensional accuracy and surface quality. However, this processing represents an additional work step, which is associated with a corresponding outlay.
  • the object of the invention is to provide an inner part for a molecular joint of a chassis driver, in which, by means of an alternative embodiment of the inner part, machining of the sealing surfaces can be dispensed with.
  • the invention accordingly provides an inner part for a molecular joint of a chassis driver.
  • the inner part has a spherical piece extending in its axial direction with an, at least essentially, spherical bearing area.
  • the bearing area is encircled by a one-piece elastomer body edged.
  • one sealing surface is arranged around the ball piece in a circumferential and at the same time unprocessed, the two sealing surfaces being suitable for producing the elastomer body in an elastomer injection molding process to prevent an unintentional leakage of an initially viscous elastomer mass.
  • the two unprocessed sealing surfaces are, in particular, surfaces which remain in their raw state, the raw state being generated in particular by primary shaping or forming.
  • the sealing surfaces are not surfaces of the actual ball piece.
  • the ball piece is preferably a formed ball piece, in particular a ball piece produced by solid forming.
  • the ball piece is preferably a forged part, in particular a drop-forged part. Alternatively, a cast part is also conceivable.
  • an outer peripheral surface of the ball piece remains in an unprocessed raw state in the region of the two sealing surfaces. In the case of a forged ball piece, this has the advantage that a cutting through of the supporting material fibers by a machining operation is avoided, and the advantage of forging, namely the continuous, uninterrupted material fibers, is retained.
  • the sealing surfaces also advantageously represent outer peripheral surfaces of sealing volumes, each of which surrounds the spherical piece in a ring.
  • the inner part has exactly two sealing volumes.
  • the sealing seals are preferably Lumens each directly on an outer peripheral surface, in particular an outer peripheral surface of the ball piece left in the raw state.
  • the sealing volumes are positively and / or non-positively and / or cohesively connected to the unprocessed outer peripheral surface of the ball piece.
  • the sealing volumes are molded onto the unprocessed outer peripheral surface of the ball piece, in particular molded onto it in a sealing manner.
  • the sealing volumes are formed on the raw outer circumferential surface of the ball piece by means of a master process. This has the particular advantage that shape deviations and / or surface impairments of the ball piece in the area of the sealing surfaces can be compensated for. Such deviations in shape can, for example, be due to a forged ball piece in a forged ridge.
  • At least one sealing volume is preferably formed from a softer material than the material of the ball piece. In this way, the sealing volume can be easily molded onto the unprocessed outer peripheral surface of the ball piece.
  • At least one sealing volume is formed from a metallic material.
  • the sealing volume can be formed from magnesium or aluminum or an alloy of these two metals.
  • At least one sealing volume is formed from a non-metallic material, in particular a plastic.
  • the plastic is a thermoplastic, which can be provided with reinforcing fibers.
  • the plastic is an injection-moldable plastic. Thermoplastic plastic, which is applied to the unprocessed outer circumferential surface of the ball piece by injection molding, has a higher viscosity in the processing state than injection-moldable elastomer material. It is therefore possible to seal contact surfaces of a plastic injection mold against the unprocessed outer peripheral surface of the ball piece at least to the extent that no thermoplastic injection molding compound emerges during the injection molding process.
  • the two sealing surfaces expediently have a smoother surface than the unprocessed outer peripheral surfaces of the ball piece, which are arranged in the region of the two sealing surfaces.
  • a smoother surface is to be understood as a surface which has a lower roughness depth than the aforementioned unprocessed outer peripheral surfaces of the ball piece.
  • the two sealing surfaces also have a higher dimensional accuracy, in particular with respect to a cylindrical jacket shape, than unprocessed outer peripheral surfaces of the ball piece, which are arranged in the region of the two sealing surfaces.
  • At least one sealing volume, which surrounds the ball piece in an annular manner, is advantageously enclosed in the axial direction by the ball piece.
  • the at least one sealing volume, which surrounds the ball piece in a ring shape is bordered on both sides in the axial direction by the ball piece.
  • the axial volume gives the sealing volume a relatively high level of dimensional stability. This is particularly advantageous if the sealing volume is made of a softer material than the material of the ball piece.
  • the ball piece when viewed in the axial direction, has a circumferential collar on the sides of the sealing volumes facing away from the spherical bearing area, which acts as a kind of formwork when the sealing volumes are produced in a master mold.
  • the ball piece has two annular grooves spaced apart from one another in the axial direction, each arranged next to the spherical bearing area and at the same time unprocessed in their surface, for receiving the sealing volumes.
  • the axial direction of the inner part is identical to the axial direction of the ball piece, which is why sometimes only the term “axial direction” is used without further explanation.
  • the inner part preferably has a sealing volume on both sides of the spherical bearing area, both sealing volumes of the spherical piece each being annular enclose and are materially interconnected. As a result, the two sealing volumes are formed together in one piece.
  • the two sealing volumes are expediently formed in one piece with the spherical bearing area.
  • the sealing volumes and the spherical bearing area are made of plastic and the ball piece is made of a steel material, such a configuration brings weight advantages.
  • the sealing surfaces preferably adjoin the elastomer body in the axial direction of the spherical piece and at the same time away from the spherical bearing area without interruption. In this way, a secure seal is given during an injection molding of the elastomer body.
  • the sealing surfaces preferably extend in the axial direction of the spherical piece and at the same time away from the spherical bearing region, in each case beyond support rings which partially axially surround the elastomer body.
  • the sealing surfaces have a relatively large axial length, as a result of which a good seal is provided between an elastomer injection molding tool and the sealing surfaces when the elastomer body is injection molded.
  • the sealing surfaces advantageously extend in the axial direction of the ball piece to below the elastomer body. In this way, a reliable seal is ensured even in the event of tolerance-related geometric fluctuations in the elastomer body and / or the ball piece.
  • the invention further relates to a chassis link with a molecular joint, the molecular joint having a housing.
  • an inner part is inserted into the housing as described above.
  • an elastomer body of the inner part is inserted into the housing under axial prestress.
  • the housing has a cylindrical outer circumferential surface which extends continuously in the axial direction of the inner part in the region of the elastomer body without interruption.
  • the molecular joint is designed as a so-called dry joint, that is, as a joint without damping fluid.
  • the permissible swiveling of a ball piece of the inner part with respect to the receiving housing is limited, for example to +/- 15 degrees in the case of torsional stress, in order to avoid damage to the elastomer body.
  • the molecular joint is fundamentally different from a ball joint, the joint ball of which is slidably mounted in a ball joint housing and can be rotated without restriction.
  • the elastomer body On the end faces of the elastomer body facing away from the spherical bearing area in the axial direction of the inner part, the elastomer body in each case has a vulcanized support ring.
  • the vulcanized-on support rings allow the elastomer body to be pre-tensioned in the axial direction of the inner part in the housing which is provided for receiving the inner part. Such an axially prestressed fixing of the elastomer body is not possible without the support rings.
  • the chassis link is preferably designed as a multi-point link, in particular a two-point link or a three-point link or a four-point link.
  • the multi-point link can be designed, for example, as a two-point link in the form of a Panhard rod, a stabilizer link or an axle strut.
  • the multi-point link can be designed as a three-point link in the form of a wishbone for an independent wheel suspension.
  • the three-point link can also be designed as an axle guide link for guiding a rigid axle.
  • Such a three-point link can each have a molecular joint, as described above, at two ends on the frame side, based on the installed state.
  • the three-point link can have a molecular joint, as described above, at a third end, via which it can be connected to a central joint of a rigid axle.
  • two frame-side and / or two axle-side ends of a four-point link can also have molecular joints, as described above.
  • the multi-point link is in particular a component of the chassis of a commercial vehicle for the transport of people and / or goods.
  • the invention relates to a method for producing an inner part for a molecular joint, as described above, wherein the elastomer body is produced in an elastomer injection molding process.
  • an elastomer injection molding tool is sealed off from the inner part via unprocessed sealing surfaces, which, when viewed in the axial direction of the ball piece, are arranged on both sides of the spherical bearing area, the ball piece running around in the shape of a cylinder jacket.
  • Figure 1 is a perspective view of part of a chassis according to the prior art.
  • FIG. 5 shows a perspective, partially sectioned illustration of the inner part for a molecular joint according to FIG. 4;
  • FIG. 6 shows a perspective view of a chassis handlebar designed as a two-point link according to the invention
  • FIG. 7 shows a perspective, partially sectioned illustration of part of the two-point link according to FIG. 6;
  • Fig. 8 is a perspective view of a three-point control arm designed according to the invention and Fig. 9 is a perspective view of a four-point control arm according to the invention.
  • the chassis 1 shows a part of a chassis 1 which is part of a commercial vehicle 2.
  • the chassis 1 has two two-point links 12 which are designed as axle struts and are arranged in a lower link level and which at the same time extend in a vehicle longitudinal direction x.
  • the axle struts 12 are each connected at one end to a rigid axle 5 via a molecular joint 11. With the respective other end, the axle struts 12 are indirectly connected to a vehicle frame 6; also via molecular joints 11.
  • the rigid axle 5 is additionally guided via a four-point link 12.
  • the four-point link 12 arranged in an upper link plane is connected to both the axle side and the frame side via two molecular joints 11, two of these molecular joints 11 being covered by a longitudinal member of the vehicle frame 6.
  • FIG. 2 shows an inner part 10 for a molecular joint 11 of a chassis control arm 12, the inner part 10 having a ball piece 13 extending in its axial direction a with an essentially spherical bearing region 14.
  • the spherical bearing area 14 is encircled by a one-piece elastomer body 15.
  • the elastomer body 15 is vulcanized onto the spherical bearing area 14 of the ball piece 13, in order to prevent the ball piece 13 from slipping relative to the elastomer body 15, particularly when the inner part 10 is subjected to torsional stress.
  • the elastomer body 15 In an assembled state, the elastomer body 15 is clamped axially between two sheet metal rings 16, which are also referred to as support rings.
  • the ball piece 13 has an unprocessed blank surface 17, which is indicated by dash-dotted lines. Furthermore, the ball piece 13, when viewed in its axial direction a, has on both sides of the spherical bearing area 14 an annular circumferential, cylindrical jacket-shaped sealing surface 18 which is also machined by turning.
  • the two sealing surfaces 18 are suitable for preventing an undesired leakage of an initially viscous elastomer composition when the elastomer body 15 is produced in an elastomer injection molding process.
  • the parallel distance between the The blank surface 17 and the sealing surface 18 represent a machining allowance that is removed during machining.
  • An inner part 10 shown in FIG. 3 for a molecular joint 11 of a suspension arm 12 has a spherical piece 13 which extends in the axial direction a of the inner part 10 and has a substantially spherical bearing region 14 which is encircled by a one-piece elastomer body 15 in an annular manner .
  • a sealing surface 18 is arranged on both sides of the spherical bearing area 14, which surrounds the ball piece 13 in the shape of a cylinder jacket and is at the same time unprocessed.
  • the two sealing surfaces 18 are suitable for preventing the undesired escape of an initially thin elastomer compound when the elastomer body 15 is produced in an elastomer injection molding process.
  • the axial direction a of the inner part 10 is identical to the axial direction a of the ball piece 13.
  • the spherical bearing region 14 has an axis of rotation extending in the axial direction a of the ball piece 13. In any planes extending perpendicular to the axial direction a of the inner part 10, the spherical bearing area 14 is circular in each case without interruption.
  • the ball piece 13 has two fastening areas 19 which are partially machined and which extend in the axial direction a of the inner part outside the elastomer body 15 and outside the sealing surfaces 18 and at the same time form axial end sections of the ball piece 13.
  • An outer peripheral surface 23 of the ball piece remains in an unprocessed raw state both in the region of the spherical bearing region 14 and in the region of the two sealing surfaces 18.
  • the elastomer body 15 has on its two end faces, facing away from each other in the axial direction a, a circumferential support ring 16 which is vulcanized onto the respectively assigned end face of the elastomer body 15. In cross section, the support rings 16 have an angular profile with an outer diameter that corresponds to that of the elastomer body 15.
  • the sealing surfaces 18 represent outer peripheral surfaces of sealing volumes 20, each of which surrounds the spherical piece 13 in an annular manner and which are formed from a softer material, namely plastic, than the spherical piece 13 made of forged steel.
  • the two sealing surfaces 18 have a smoother surface as unprocessed outer peripheral surfaces 23 of the ball piece 13, which are arranged in the region of the two sealing surfaces 18.
  • the ball piece 13 has two annular grooves 21, spaced apart from one another in the axial direction a, each arranged next to the spherical bearing region 14 and untreated in their surface, for receiving the sealing volumes 20. In this way, the two sealing volumes 20 are enclosed in the axial direction a by the ball piece 13.
  • the ball piece 13 Since the ball piece 13 is produced by drop forging, it has a circumferential forging burr 22 which rotates the ball piece 13 in a plane which contains the axis of rotation of the spherical bearing region 14.
  • the forged burr 22 is completely covered by these in the area of the two sealing volumes 20.
  • the sealing surfaces 18 adjoin the elastomer body 15 directly and without interruption in the axial direction a of the ball piece 13 and at the same time away from the spherical bearing area 14. At the same time, the sealing surfaces 18 extend in the axial direction a of the ball piece
  • FIG. 4 shows an inner part 10 for a molecular joint 11, the inner part 10 having a sealing volume 20 on both sides of a spherical bearing region 14.
  • Both sealing volumes 20 each enclose a spherical piece 13 in an annular manner and are materially connected to one another. The material connection is so pronounced that the two sealing volumes 20 are formed in one piece with the spherical bearing area 14 and thus at the same time also form the spherical bearing area 14, which can also be clearly seen in FIG. 5. This leads to a weight advantage because the two sealing volumes 20 and the spherical bearing area
  • FIG. 14 are made of plastic.
  • an elastomer injection molding tool 24 for producing an elastomer body 15 of the inner part 10 is also shown in broken lines and schematically. With the elastomer injection mold 24
  • Elastomer body 15 is produced in an elastomer injection molding process, the elastomer injection molding tool 24 being sealed against the ball piece 13 during the injection molding process by means of unprocessed sealing surfaces 18.
  • the sealing surfaces 18 are on both sides of the spherical bearing area 14, the ball piece 13 arranged in the shape of a cylinder jacket.
  • the sealing surfaces 18, when viewed in the axial direction a of the ball piece 10, are arranged on both sides of the spherical bearing region 14 and the ball piece 13 is arranged in a ring circumferentially.
  • the ball piece 13 has on the sides of the sealing volumes 20 facing away from the spherical bearing region 14 in the axial direction a in each case a circumferential collar 25 which acts as a kind of formwork during the production of the sealing volumes 20 in a thermoplastic injection molding process.
  • Elastomer body 15 and at the same time arranged between support rings 16 and the sealing surfaces 18, are tool slides which can be displaced in the axial direction a.
  • the axle strut 12 has two identically constructed molecular joints 11 which are each arranged at the ends. As can be seen in FIG. 7, the molecular joints 11 each have an inner part 10 with a ball piece 13. In addition, the molecular joints 11 each have a housing 26, in each of which one of the two inner parts 10 is inserted. The two molecular joints 11 are each formed from the housing 26 and the inner part 10 inserted therein. Each molecular joint 11 has a shaft part 27, which is in each case formed in one piece with the housing 26. The two shaft parts 27 are rigidly connected to one another by a tube section 28 of the axle strut 12.
  • An elastomer body 15 of the inner part 10 is inserted into the housing 26 under axial prestress.
  • the housing 26 each has a cylindrical outer circumferential surface which extends continuously in the axial direction a of the inner part 10 in the region of the elastomer body 15 without interruption.
  • the elastomer body 15 At the front ends of the elastomer body 15, which, when viewed in the axial direction a of the inner part 10, are arranged on opposite sides of a spherical bearing area 14, the elastomer body 15 each has a vulcanized support ring 16.
  • the vulcanized-on support rings 16 enable the elastomer body 15 to be prestressed in the respective assigned housing 26 in the axial direction a of the inner part 10.
  • the support rings 16 are each supported on one end of the housing 26 against an inwardly facing, circumferential collar of the housing 26 and on the axially direction a opposite end of the housing 26 against a locking ring.
  • a sealing surface 18 is arranged on both sides of the spherical bearing area 14, which surrounds the ball piece 13 in the shape of a cylinder jacket and is at the same time unprocessed.
  • FIG. 8 shows a chassis link 12, which is designed as a three-point link in the form of an axle guide link for guiding a rigid axle 5, and has two link arms which enclose an angle to one another.
  • a housing 26 for receiving an inner part 10, as described in connection with FIG. 7, is arranged at the free ends of these two link arms.
  • the respective other ends of the two link arms converge in a central joint for connecting the three-point link 12 to the rigid axle 5.
  • FIG. 9 shows a chassis link 12 which is designed as a four-point link and has four link arms which extend away from a center of the four-point link 12 in a star shape.
  • a housing 26 for receiving an inner part 10, as already described in connection with FIG. 7, is arranged at the ends of the four link arms.
  • the housings 26 with the inner parts 10 pressed into them each form a molecular joint 11.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

L'invention concerne une partie intérieure (10) pour une articulation moléculaire (11) d'un bras de suspension (12). La partie intérieure (10) comprend une pièce sphérique (13) s'étendant dans sa direction axiale (a) comportant une zone de palier (14) sphérique, au moins sensiblement, qui est entourée de manière annulaire par un corps élastomère (15) en une pièce. La partie intérieure (10) est caractérisée en ce que, lorsqu'elle est vue dans la direction axiale (a) de la pièce sphérique (13), de deux côtés de la zone de palier (14) sphérique, une surface d'étanchéité (18) respective, entourant la pièce sphérique (13) de manière à former une enveloppe de cylindre et en même temps non traitée, est agencée. Les deux surfaces d'étanchéité (18) sont adaptées pour empêcher, lors de la fabrication du corps élastomère (15) selon un procédé de moulage par injection d'élastomère, une sortie indésirable d'une matière élastomère initialement très liquide. L'invention concerne en outre une bras de suspension (12) comprenant une articulation moléculaire (11) ainsi qu'un procédé de fabrication d'une pièce intérieure (10) pour une articulation moléculaire (11).
PCT/EP2019/075581 2018-10-25 2019-09-24 Partie intérieure pour une articulation moléculaire d'un bras de suspension WO2020083589A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018218266.3 2018-10-25
DE102018218266.3A DE102018218266A1 (de) 2018-10-25 2018-10-25 Innenteil für ein Molekulargelenk eines Fahrwerklenkers

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WO2020083589A1 true WO2020083589A1 (fr) 2020-04-30

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WO (1) WO2020083589A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021213989A1 (de) 2021-12-08 2023-06-15 Zf Friedrichshafen Ag Fahrwerkanordnung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021129206B4 (de) * 2021-11-10 2024-02-15 Jörn GmbH Kugelgelenk, insbesondere für Fahrzeuge

Citations (6)

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