WO2018171963A1 - Coussinet - Google Patents

Coussinet Download PDF

Info

Publication number
WO2018171963A1
WO2018171963A1 PCT/EP2018/052266 EP2018052266W WO2018171963A1 WO 2018171963 A1 WO2018171963 A1 WO 2018171963A1 EP 2018052266 W EP2018052266 W EP 2018052266W WO 2018171963 A1 WO2018171963 A1 WO 2018171963A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer sleeve
bearing bush
support element
receiving eye
core
Prior art date
Application number
PCT/EP2018/052266
Other languages
German (de)
English (en)
Inventor
Philip Werner
Hilrich Kardoes
Original Assignee
Vibracoustic Gmbh
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 Vibracoustic Gmbh filed Critical Vibracoustic Gmbh
Priority to CN201880002888.9A priority Critical patent/CN109477536A/zh
Priority to PCT/EP2018/057376 priority patent/WO2018172492A1/fr
Priority to EP18713215.4A priority patent/EP3601839A1/fr
Publication of WO2018171963A1 publication Critical patent/WO2018171963A1/fr

Links

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
    • F16F1/387—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 comprising means for modifying the rigidity in particular directions
    • F16F1/3876—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 comprising means for modifying the rigidity in particular directions by means of inserts of more rigid material
    • 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
    • F16F1/3863—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 the rigid sleeves or pin, e.g. of non-circular cross-section

Definitions

  • the present invention relates to a bearing bush for pressing into a receiving eye of a chassis, in particular a subframe, comprising a core, an outer sleeve surrounding the core of a first material and the core and the outer sleeve interconnecting elastomer body.
  • a bushing of the type mentioned is used in a chassis of a motor vehicle, for example, to dampen the forces or shocks occurring when rolling over bumps introduced
  • the bushing according to the invention for pressing into a receiving eye of a chassis, in particular a subframe, has a core, an outer sleeve surrounding the core of a first material and the core and the outer sleeve interconnecting elastomeric body, wherein a support member is provided of a second material, which radially supports the outer sleeve when pressed into the receiving eye.
  • the support element When the bearing bush is pressed in, the support element directs the load applied to the outer sleeve directly into the receiving eye by means of static friction. In addition, the support element reduces the free surface of the external sleeve in contact with the receiving eye as an interference fit. As a result, the material of the outer sleeve can not flow radially inward in the region of the support element, so that a stress relaxation of the outer sleeve is prevented. The support element thus effectively prevents the outer sleeve can plastically deform radially inwardly when pressed into the receiving eye. Rather, the support element causes the material of the outer sleeve only in the longitudinal direction, ie in Axial direction of the bearing bush, can flow.
  • the bearing bush has a high extrusion force over its entire service life.
  • the expression force is understood to mean that force which is required in order to press the bearing bush out of the receiving eye.
  • the support element supports the outer sleeve radially from the inside.
  • the support element counteracts the radially inwardly directed force when pressed onto the outer sleeve.
  • the support element may rest on an inner side of the outer sleeve or be integrated in the outer sleeve.
  • the support element exerts a radially outwardly directed force on the outer sleeve.
  • the free surface is to be understood as meaning the inner surface of the outer sleeve.
  • the bushing can also be designed as a hydraulically damping bushing.
  • Such a bearing bush can also be referred to as a hydraulic bushing.
  • a hydraulic bushing has at least two working chambers filled with a liquid, which are connected to one another in a fluid-conducting manner via a channel. During a relative movement from core to outer sleeve or vice versa, one of the two working chambers is compressed. As a result, the fluid therein flows through the channel into the other working chamber. As a result, a damping and / or eradication effect is achieved.
  • the elastomeric body has elastomeric membranes which limit the working chambers on the front side.
  • the elastomeric membranes may be connected via a connection structure with the outer sleeve.
  • the connection structure may be formed as a plastic cage or support rings.
  • the second material has a lower tendency to relax and / or a lower tendency to creep than the first material.
  • Creep (also retardation) of a material is its time- and temperature-dependent, plastic deformation under constant load.
  • a measure of the creep is the creep module.
  • a high propensity for relaxation thus results in a rapid decrease in extrusion forces with increasing time.
  • the support element prevents radially inwardly directed deformation of the outer sleeve when the bearing bush is pressed into the receiving eye.
  • the support element causes the outer sleeve when pressed into the receiving eye to expand or flow substantially only in the longitudinal direction of the bearing bush. Since the outer sleeve can not deform radially inwardly when pressed into the receiving eye, a stress relaxation of the outer sleeve is prevented, so that the bias of the press fit in the receiving eye at high ambient temperatures and over the entire life of the bushing can be maintained.
  • the bearing bush over its entire life a constant Auspresskraft, ie the force that is required to push the bushing in the axial direction of the receiving eye out, so that at high axial forces pushing out of the bearing bush is avoided from the receiving eye.
  • the support element is only elastically deformed when pressing the bushing in the receiving eye.
  • the first material is a plastic
  • the second material is a metal or a plastic.
  • An existing out of a plastic outer sleeve has a low weight and is inexpensive to manufacture.
  • complex geometries can be displayed cost-effectively.
  • the plastic of the outer sleeve may be a fiber reinforced plastic with a low fiber content.
  • the plastic of the support element has a low tendency to relax compared to the plastic of the outer sleeve.
  • the less prone to relaxation plastic may be a fiber reinforced plastic.
  • the fiber content of the support element is at least 40 wt .-%.
  • the plastic the support element may be formed from a structure wound with glass fibers unidirectionally reinforced tape with an orientation of the fibers in the circumferential direction of the bearing bush.
  • the support element consists of a unidirectionally fiber-reinforced plastic band which is wound into a ring.
  • the plastic band is also referred to as unidirectional tape or UD tape.
  • the length of the support element in the axial direction of the bearing bush is at least one third of the length of the contact surface of the outer sleeve with the receiving eye.
  • the support element is positively, non-positively and / or materially connected to the outer sleeve.
  • the support element can be used with oversize in the outer sleeve, so be pressed.
  • the support member can be used without oversize in the outer sleeve, so only positive fit, wherein a bias voltage is applied to the support element during the pressing of the bearing bush in the receiving eye.
  • the support member may be glued or welded to the outer sleeve.
  • the support element is connected by encapsulation cohesively and / or positively connected to the outer sleeve.
  • the support element is integrated in the outer sleeve.
  • the support element is wound from a glass fiber unidirectionally reinforced tape, it is advantageous if the tape is wound onto a core in an injection molding machine and then overmolded.
  • the support element can be separated as a ring from a tube which is reinforced with unidirectional glass fibers and either inserted for encapsulation in the injection molding machine and molded or mounted in an injection-molded outer sleeve form-fitting, non-positive and / or material fit.
  • the outer sleeve is provided with a coating.
  • the coating may be of a thermoplastic elastomer (TPE).
  • the outer sleeve has a radially inwardly projecting projection on which the support element can be applied.
  • the projection provides for optimal placement of the support ring and it prevents migration of the support member in an axial direction of the outer sleeve.
  • the load path of the axial forces, which are dissipated via the axial stop does not pass over the supporting ring.
  • the support element is a ring element or a sleeve element.
  • the support member of a pipe made of metal or fiber-reinforced plastic, in particular with a fiber reinforcement arranged unidirectionally in the circumferential direction.
  • the elastomeric body is vulcanized to the support element.
  • a sufficient fixation of the support element is created within the outer sleeve.
  • an adhesive is applied to both the inside and the outside of the support member to provide a bond between the support member and the elastomeric body during the vulcanization process.
  • FIG. 1 shows a cross section through a bearing bush according to a first embodiment, which is pressed into a receiving eye.
  • Embodiment which is pressed in a receiving eye
  • FIG 3 shows a cross section through a bearing bush according to a third embodiment, which is pressed into a receiving eye.
  • FIG. 6 shows a cross section through a bearing bush according to a sixth
  • Embodiment which is pressed in a receiving eye
  • the outer sleeve 18 is made of a plastic or a fiber-reinforced plastic and has at a first end a radially outwardly directed first flange portion 22 which abuts the end of the receiving eye 12, and a radially inwardly directed second flange portion 24.
  • the elastomer body 20 is firmly bonded to the outer sleeve 18, in particular vulcanized and has a first axial stop 26 in the region of the first flange portion 22 and a second axial stop 28 in the region of the second flange portion 24.
  • a support element 30 is embedded in the outer sleeve 18.
  • the support member 30 is formed as a sleeve member 31.
  • the support member 30 is made of a material having a lower tendency for stress relaxation than the material of the outer sleeve 18.
  • the support member 30 may be made of a metal or a plastic, in particular of a fiber-reinforced plastic whose fiber content is at least 40 wt .-%.
  • the support member 30 may be wound from a carbon fibers and / or glass fibers unidirectionally reinforced tape.
  • the support element 30 is integrally and / or positively connected to the outer sleeve 18 by encapsulation.
  • the support element 30 is integrally embedded in the outer sleeve 18.
  • the support member 30 is completely surrounded by the outer sleeve 18. This requires that first an inner plastic ring is injected, then the tape is wound on, before the outer sleeve 18 is molded onto this structure. In addition, the support member 30 is held in position in an injection mold and then encapsulated on both sides. However, not shown retaining marks on the outer sleeve 18 remain visible.
  • the support member 30 supports the outer sleeve 18 when pressed into the receiving eye 12 radially from the inside and derives the applied in the outer sleeve 18 load directly by means of static friction in the receiving eye 12.
  • the support element 30 reduces the free surface of the outer sleeve 18 which is in press-fitting contact with the receiving eye 12. As a result, the material of the outer sleeve 18 can not radially inwardly flow in the region of the support element 30, so that stress relaxation of the outer sleeve 18 is prevented.
  • a second embodiment of the bearing bush 10 is disclosed, which differs from the first embodiment in that the support member 30 is disposed within the outer sleeve 18.
  • the support element 30 bears against an inner side of the outer sleeve 18.
  • the support element 30 can be fixed in the outer sleeve 18 in a form-fitting, force-fitting and / or material-locking manner.
  • the support member 30 may have an outer diameter which is larger than an inner diameter of the outer sleeve 18.
  • the support member 30 is fixed by means of an interference fit in the outer sleeve 18.
  • the support member 30 may have an undersize compared to the inner diameter of the outer sleeve 18, so that the support member 30 is inserted into the outer sleeve 18, and only when pressing the bearing bush 10 into the receiving eye 12, a bias on the support member 30 is applied.
  • a third embodiment of the bearing bush 10 is shown, which differs from the first embodiment in that the support member 30 is fixed by means of a clip connection within the outer sleeve 18.
  • the clip connection prevents migration of the support member 30 in the axial direction A from the outer sleeve 18, as for example, during the Einpressvorgangs the La gers can occur in the receiving eye 12.
  • the outer sleeve 18 has a radially inwardly projecting latching lug 34, which bears against a first end of the support member 30 and cooperates with the radially inwardly projecting projection 32 which bears against a second end of the support member 30.
  • 20 working chambers 38 are formed within the elastomer body, which are filled with a liquid and liquid-conductively connected to each other via a damping channel 40.
  • the working chambers 38 are frontally bounded by elastomeric membranes 41 of the elastomer body 20.
  • the damping channel 40 is introduced into channel shells 42, which are assigned to the support element 30.
  • Elastomeric membranes 41 end provided with support rings 44a, 44b made of plastic, where the axial stops 26, 28 are vulcanized.
  • the support rings 44a, 44b are materially connected to the outer sleeve 18.
  • the support rings 44a, 44b by means of laser transmission welding with the outer sleeve 18 is connected.
  • the outer sleeve 18 is made of a plastic which has a high laser transmittance.
  • the outer sleeve 18 is made of a fiber reinforced plastic, it is required that the outer sleeve 18 has a low fiber content to achieve a high transmittance.
  • the support element 30 does not extend over the entire overall height of the outer sleeve 18.
  • a contact surface between the first support ring 44a and the outer sleeve 18 and for a second weld 51b a contact surface between the second support ring 44b and the outer sleeve 18 is obtained.
  • both support rings 44a, 44b can be materially connected to the outer sleeve 18 in order to connect the components in a liquid-tight manner and / or to transmit forces.
  • the core 14 has a shoulder 46, which is encased by the elastomer of the elastomer body 20 and forms a radial stop 48.
  • the radial stop 48 cooperates with the channel shell 42 and the support member 30. As a result, the support element 30 lies in the direct load path of the radial stop 48.
  • a sixth embodiment of the bearing bush 10 which differs from the fifth embodiment in that the radial stop 48 is outside the working chambers 38, so that the support member 30 is located outside the load path of the radial stop 48.
  • the radial stop 48 is formed from two ring elements 50, with a respective ring element 50 being pushed onto the elastomer body 20 surrounding the core 14 on the end side.
  • the ring elements 50 cooperate with the elastomer of the elastomeric membranes 41 surrounding the support rings 40.

Landscapes

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

Abstract

L'invention concerne un coussinet (10) destiné à être monté dans un œillet de réception (12) d'un châssis. Le coussinet comprend une partie centrale (14), un manchon extérieur (18) entourant la partie centrale (14) et constituée d'un premier matériau et un corps élastomère (20) reliant la partie centrale (14) et le manchon extérieur (18) l'une à l'autre, un élément d'appui (30) composé d'un deuxième matériau servant d'appui radial au manchon extérieur (18) lors de l'enfoncement dans l'œillet de réception (12).
PCT/EP2018/052266 2017-03-23 2018-01-30 Coussinet WO2018171963A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201880002888.9A CN109477536A (zh) 2017-03-23 2018-03-22 支承衬套
PCT/EP2018/057376 WO2018172492A1 (fr) 2017-03-23 2018-03-22 Coussinet de palier
EP18713215.4A EP3601839A1 (fr) 2017-03-23 2018-03-22 Coussinet de palier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017106289.0 2017-03-23
DE102017106289.0A DE102017106289B4 (de) 2017-03-23 2017-03-23 Lagerbuchse

Publications (1)

Publication Number Publication Date
WO2018171963A1 true WO2018171963A1 (fr) 2018-09-27

Family

ID=61198808

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP2018/052266 WO2018171963A1 (fr) 2017-03-23 2018-01-30 Coussinet
PCT/EP2018/057376 WO2018172492A1 (fr) 2017-03-23 2018-03-22 Coussinet de palier

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/057376 WO2018172492A1 (fr) 2017-03-23 2018-03-22 Coussinet de palier

Country Status (4)

Country Link
EP (1) EP3601839A1 (fr)
CN (1) CN109477536A (fr)
DE (1) DE102017106289B4 (fr)
WO (2) WO2018171963A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019117846A1 (de) * 2019-07-02 2021-01-07 Vorwerk Autotec Gmbh & Co. Kg Lagerbuchse mit einem Kernelement, einem Fensterrohr und einem daran befestigten Außenrohr

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019109608B4 (de) * 2019-04-11 2021-06-24 Vibracoustic Ag Elastisches Lager
DE102019113847B3 (de) * 2019-05-23 2020-03-26 Benteler Automobiltechnik Gmbh Lageranordnung
DE102020126561B4 (de) * 2020-10-09 2022-04-28 Vibracoustic Se Lager und Lageranordnung
CN114374038A (zh) * 2022-03-22 2022-04-19 浙江阿莱西澳智能装备科技有限公司 一种用于新能源汽车底盘结构和电池包托盘的碳纤维复合材料

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2825075A1 (de) * 1977-06-15 1979-01-18 Wallace Murray Corp Torsionsschwingungsdampfer
JPH04370426A (ja) * 1991-06-18 1992-12-22 Toyoda Gosei Co Ltd 防振ブッシュ
DE19937714A1 (de) * 1999-08-10 2001-03-15 Daimler Chrysler Ag Hülsengummifeder, sowie Verfahren zu deren Herstellung
EP1908987A2 (fr) * 2006-10-07 2008-04-09 Jörn GmbH Coussinet élastique avec amortissement hydraulique
DE102010018536A1 (de) 2010-04-28 2011-11-03 Trelleborg Automotive Germany Gmbh Elastische Lagerbuchsenanordnung, elastisches Lager und Verfahren zur Herstellung der elastischen Lagerbuchsenanordnung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605859C2 (de) * 1996-02-16 1998-07-02 Metzeler Gimetall Ag Lagerbuchse
JP4052705B2 (ja) * 1998-01-14 2008-02-27 本田技研工業株式会社 液体封入ブッシュ
FR2812241A1 (fr) * 2000-07-28 2002-02-01 Michelin & Cie Articulation elastique a raideur radiale variable
FR2818718B1 (fr) * 2000-12-22 2003-07-25 Hutchinson Manchon antivibratoire et vehicule automobile comportant un tel manchon
DE102006007160A1 (de) * 2006-02-16 2007-08-30 Jörn GmbH Gelenklager, insbesondere für ein Fahrwerk eines Nutzfahrzeugs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2825075A1 (de) * 1977-06-15 1979-01-18 Wallace Murray Corp Torsionsschwingungsdampfer
JPH04370426A (ja) * 1991-06-18 1992-12-22 Toyoda Gosei Co Ltd 防振ブッシュ
DE19937714A1 (de) * 1999-08-10 2001-03-15 Daimler Chrysler Ag Hülsengummifeder, sowie Verfahren zu deren Herstellung
EP1908987A2 (fr) * 2006-10-07 2008-04-09 Jörn GmbH Coussinet élastique avec amortissement hydraulique
DE102010018536A1 (de) 2010-04-28 2011-11-03 Trelleborg Automotive Germany Gmbh Elastische Lagerbuchsenanordnung, elastisches Lager und Verfahren zur Herstellung der elastischen Lagerbuchsenanordnung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019117846A1 (de) * 2019-07-02 2021-01-07 Vorwerk Autotec Gmbh & Co. Kg Lagerbuchse mit einem Kernelement, einem Fensterrohr und einem daran befestigten Außenrohr
DE102019117846B4 (de) 2019-07-02 2022-10-20 Vorwerk Autotec Gmbh & Co. Kg Lagerbuchse mit einem Kernelement, einem Fensterrohr und einem daran befestigten Außenrohr

Also Published As

Publication number Publication date
WO2018172492A1 (fr) 2018-09-27
DE102017106289B4 (de) 2019-09-12
CN109477536A (zh) 2019-03-15
EP3601839A1 (fr) 2020-02-05
DE102017106289A1 (de) 2018-09-27

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