EP3274198A1 - Switchable bearing bush for a motor vehicle - Google Patents
Switchable bearing bush for a motor vehicleInfo
- Publication number
- EP3274198A1 EP3274198A1 EP16706128.2A EP16706128A EP3274198A1 EP 3274198 A1 EP3274198 A1 EP 3274198A1 EP 16706128 A EP16706128 A EP 16706128A EP 3274198 A1 EP3274198 A1 EP 3274198A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing bush
- band
- punch
- base body
- punches
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/006—Attaching arms to sprung or unsprung part of vehicle, characterised by comprising attachment means controlled by an external actuator, e.g. a fluid or electrical motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/025—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a torsion spring
-
- 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
- F16F1/3615—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with means for modifying the spring characteristic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/42—Electric actuator
-
- 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
- B60G2204/14—Mounting of suspension arms
- B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
-
- 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
- B60G2204/41—Elastic mounts, e.g. bushings
- B60G2204/4104—Bushings having modified rigidity in particular directions
-
- 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
- B60G2206/11—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link
- B60G2206/111—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link of adjustable length
- B60G2206/1116—Actively adjustable during driving
Definitions
- the invention relates to a bearing bush for a chassis of a motor vehicle, wherein the bearing bush comprises a shaft and a hub and an elastomer member arranged radially therebetween, wherein the bearing bush is switchable between at least two stiffness stages.
- the structure and the resulting operating data of bushings which are used in a chassis of a motor vehicle influence the driving and steering characteristics of the motor vehicle. Relatively small changes in the spring rate or stiffness of the bushings can have significant effects on vehicle characteristics such as understeer or oversteer, chassis noise, vibration, and running hardness. Depending on the setting of the bearing bush, the motor vehicle has a relatively "soft” or a relatively “hard” running behavior.
- magnetorheological fluids or magnetorheological elastomers known, wherein the stiffness can be varied over a magnetic field.
- DE 696 22 141 T2 discloses a method of making and using a variable stiffness suspension bushing for controlling the relative Movement between a suspension link in a motor vehicle and a frame component of the motor vehicle.
- the suspension sleeve has a variable rigidity which is realized by including a magnetorheological elastomer or gel whose stiffness is variably adjustable over a wide range by a controllable magnetic field.
- the variable controllable magnetic field is generated by means of an electromagnet structure, which as part of the structure is completely integrated in a suspension bushing structure.
- the object of the invention is to develop a bearing bush with adjustable stiffness for a chassis of a motor vehicle.
- the hub has a base body and a plurality of circularly arranged in the base body, radially adjustable punch, wherein the stamp interact to change the stiffness of the bearing bush with the elastomeric element.
- the elastomer element is formed radially around the shaft and comes to bear radially on the punches.
- the elastomer element is applied only to the punches, without being upset.
- the shaft shifts relative to the hub, wherein the elastomeric element has a maximum deformation buffer.
- a low rigidity of the bearing bush is realized, whereby a comfortable driving is supported.
- the elastomer element is formed star-shaped and has at least four radial elements, wherein the at least four radial elements in a respective substantially complementary thereto form th recess are arranged on the base body and are compressible over the respective stamp to increase the rigidity of the bearing bush.
- the elastomer element has fewer radial elements, in particular three or two radial elements.
- the at least four radial elements have a preferably conical section at a distal end.
- the conical portion is elastically deformed at a compression of the elastomeric element, wherein the elastomeric material at least partially fills the free spaces on the preferably cylindrically shaped recesses in the base body.
- the elastomeric element is compressed by the punches.
- Elastomer element stored deformation energy is maximum.
- a relief of the elastomeric element allows a complete restoration of the original shape of the elastomeric element.
- the punch for radial adjustment in the base body with an actuator comprising an electric motor and an optional gear, together.
- the actuator is controlled and regulated by a control.
- the actuator is manually controllable via the control.
- a driver of the motor vehicle via a respective switch between different stiffness ig keitseckn the bushing vary and thereby support the respective driving style of the motor vehicle.
- the actuator preferably comprises a band arranged around the punches in a circular manner and cooperating radially with the punches, which is guided around the punches and can be actuated for the radial adjustment of the punches in the base body.
- the band is disposed at a distal end portion of the punches.
- the distal end section of the punches preferably has a bearing element or a deflection roller for friction-minimized mounting of the strap.
- Actuation of the band reduces in particular the length or the circumference of the band.
- the stamp are simultaneously displaced radially inwardly. This results in a compression of the elastomer element and thus an increase in the rigidity of the bearing bush.
- the band is actuated via a screw element, wherein a circumference of the band upon actuation of the
- Screwing reduced or enlarged depending on the direction of rotation of the screw.
- a cooperating with the screw member structure is formed on the band, which allows a method of the band. Consequently, the change in the circumference of the band takes place after the hose clamp mechanism.
- a first end portion of the band is preferably fixed to the hub and a second end portion of the band is preferably clamped to the screw.
- the band can be wound on an outer peripheral surface of a roll.
- winding the tape on the outer peripheral surface of the roll allows for a reduction in the circumference of the tape.
- a first end portion of the band is preferably fixed to the hub and a second end portion of the band is clamped to the roller.
- the band is guided through the roller and wound on the outer peripheral surface of the roller.
- the role during winding on the function of a dual role Namely, the tape is wound up from both sides at the same time. Both ends of the tape are fixed to the roll.
- the band it is also conceivable to form the band as an endless belt which has no free ends.
- the respective punch for radial adjustment in the main body via a respective toggle lever is actuated, wherein the toggle lever are actuated together via a cooperating fiber element.
- the fiber element is arranged substantially circularly on the toggle lever and movably mounted thereto.
- the respective toggle lever has a first and a second distal end, wherein the first distal end is rotatably mounted on the base body, and wherein the second distal end is intended to receive the fiber element.
- the respective first distal end is designed as a fixed bearing.
- the respective section is designed to rest as a floating bearing on the respective stamp.
- a respective first lever arm between the respective first distal end and the respective portion for supporting shorter than a respective second lever arm, between the respective second distal end and the respective portion for support.
- the respective second distal end of the respective toggle lever preferably has a respective bore through which the fiber element is guided.
- the fiber element is wound on an outer circumferential surface of a roll.
- the winding of the fiber element reduces the circumference of the fiber element.
- all toggle lever are actuated simultaneously and thus compressed the elastomeric element on the stamp.
- the invention includes the technical teaching that the shaft and the hub are preferably formed of a metallic material or a polymer material. Brief description of the drawing
- FIG. 1 shows a perspective view of a suspension control arm for a motor vehicle, wherein the suspension control arm has a bearing bush according to the invention
- FIG. 2 shows a schematic sectional view of the bearing bush according to the invention according to a first exemplary embodiment
- 3a shows a schematic sectional view of the bushing according to the invention according to a second embodiment, wherein the bearing bush has a first switching state
- Figure 3b is a schematic sectional view of the bearing bush according to the invention according to the second embodiment, wherein the bearing bush has a second switching state
- Figure 4 is a schematic sectional view of the bearing bush according to the invention according to a third embodiment.
- FIG. 5 is a perspective view of the bearing bush according to the invention according to a fourth embodiment. Detailed description of the drawing
- a bearing bush 1 is arranged in a designated hole 18 on a suspension arm 19.
- the suspension control arm 19 is installed in a chassis (not shown here) of a motor vehicle (not shown here).
- a shaft 2 of the bushing 1 a - not shown here axle carrier of the motor vehicle is attached.
- the suspension arm 19 has a further bore 18a, in which a mechanical, non-switchable bearing bush 1 a is arranged.
- the bearing bush 1 a is designed as a conventional rubber bearing.
- a wheel carrier (not shown here) is arranged on the shaft 2a of the bearing bush 1a.
- the bearing bush 1 has a shaft 2 and a hub 3 as well as an elastomer element 4 arranged radially between the shaft 2 and the hub 3.
- the hub 3 comprises a base body 5 and six radially adjustable plungers 6a-6f arranged at least partially in the base body 5.
- the punches 6a-6f act to change the stiffness of the bearing bush 1 on the one hand with the elastomer element 4 and on the other hand with an actuator 9, comprising an electric motor 10, together.
- the shaft 2 may be fixed to a vehicle - not shown here - Karoserie of the motor vehicle, the hub 3 and the actuator 9 part of a - not shown here - suspension arm are. Likewise, it is also conceivable that the hub 3 and the actuator 9 are fixed to the car body of the vehicle and the shaft is part of the suspension arm.
- the actuator 9 comprises a radially cooperating with the punches 6a-6f band 1 1, which is guided around the punches 6a-6f and for the radial adjustment of the punches 6a-6f in the main body 5 can be actuated.
- the elastomer element 4 is formed star-shaped and has six radial elements 7a-7f.
- the six radial elements 7a-7f are arranged on the main body 5 in a respective recess 8a-8f formed substantially complementary thereto and can be compressed via the respective punch 6a-6f to increase the rigidity of the bearing bush 1. Consequently, upsetting of the elastomeric element 4 increases the rigidity of the bearing bush 1.
- the band 1 1 is on an outer circumferential surface of a roller 13
- the band 1 1 is guided through the roller 13 and can be wound on the outer circumferential surface of the roller 13.
- the elastomeric element 4 is formed star-shaped and has four radial elements 7a-7d, which are arranged in a respective substantially complementary thereto formed recess 8a-8d on the base body 5. Further, the elastomer element 4 via four circularly arranged plunger 6a-6d for increasing the rigidity of the bearing bush 1 can be compressed.
- the band 1 1 is actuated by a screw 12, wherein a circumference of the band 1 1 is reduced upon actuation of the screw 12.
- the screw 12 is part of the actuator 9, which further includes the electric motor 10.
- the bearing bush 1 has six toggle levers 14a-14f, which cooperate with a fiber element 15 for the radial adjustment of the six punches 6a-6f in the base body 5.
- the respective knee lever 14a-14f has a first and a second distal end 16a, 16b, wherein the first distal end 16a is rotatably mounted on the base body 5, and wherein the second distal end 16b is provided to receive the fiber element 15.
- the fiber element 15 is attached to an outer zsymmetrics constitutional a roll 17 wound up.
- the roller 17 is actuated via the electric motor 10 of the actuator 9.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015003823 | 2015-03-23 | ||
DE102015214519.0A DE102015214519B4 (en) | 2015-03-23 | 2015-07-30 | Switchable bearing bush for a motor vehicle |
PCT/DE2016/200036 WO2016150436A1 (en) | 2015-03-23 | 2016-01-26 | Switchable bearing bush for a motor vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3274198A1 true EP3274198A1 (en) | 2018-01-31 |
Family
ID=56889639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16706128.2A Withdrawn EP3274198A1 (en) | 2015-03-23 | 2016-01-26 | Switchable bearing bush for a motor vehicle |
Country Status (4)
Country | Link |
---|---|
US (1) | US10414226B2 (en) |
EP (1) | EP3274198A1 (en) |
DE (1) | DE102015214519B4 (en) |
WO (1) | WO2016150436A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016223371B4 (en) * | 2016-11-25 | 2019-10-02 | Schaeffler Technologies AG & Co. KG | Switchable bearing bush for a motor vehicle |
CN114940039A (en) * | 2022-06-30 | 2022-08-26 | 深圳冠儫科技有限公司 | Swing arm bush and swing arm bush assembly |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2671149A1 (en) * | 1990-12-28 | 1992-07-03 | Glaenzer Spicer Sa | CONTROLLED RIGIDITY DEVICE FOR THE MECHANICAL TRANSMISSION OF EFFORTS. |
JP3039105B2 (en) * | 1992-01-30 | 2000-05-08 | 東海ゴム工業株式会社 | Cylindrical anti-vibration mount, power plant supporting device using the cylindrical anti-vibration mount, and method of controlling cylindrical anti-vibration mount in power plant supporting device |
SE503320C2 (en) * | 1993-09-23 | 1996-05-28 | Runo Nord | Torsion bar axle |
EP0784163B1 (en) * | 1996-01-11 | 2002-07-03 | Ford Motor Company Limited | Variable stiffness bushing using magnetorheological elastomers |
US6105944A (en) * | 1998-04-20 | 2000-08-22 | Lord Corporation | Mount and bonded component therefor with shape factor reducing notches |
DE10351574C5 (en) * | 2003-11-05 | 2019-11-28 | Bayerische Motoren Werke Aktiengesellschaft | Method for changing the self-steering behavior of the rear wheels of a two-lane motor vehicle |
DE102005028563B4 (en) * | 2005-06-21 | 2021-06-10 | Contitech Vibration Control Gmbh | warehouse |
US20080054539A1 (en) * | 2006-09-06 | 2008-03-06 | Hodges Peter H | Modular tuning bushing for axle isolation |
US8313108B2 (en) * | 2010-07-22 | 2012-11-20 | GM Global Technology Operations LLC | Stiffness control using smart actuators |
KR101724747B1 (en) * | 2011-11-23 | 2017-04-10 | 현대자동차주식회사 | Variable differential mount system applied Magnetorheological Elastomer |
FR2991244B1 (en) * | 2012-05-29 | 2015-06-19 | Renault Sa | LIMITATION OF VIBRO-ACOUSTIC NUISANCES IN A MOTOR VEHICLE |
DE102015210766A1 (en) * | 2015-06-12 | 2016-12-15 | Schaeffler Technologies AG & Co. KG | Switchable bearing bush for a motor vehicle |
DE102015214860B4 (en) * | 2015-08-04 | 2019-06-19 | Schaeffler Technologies AG & Co. KG | Switchable bearing bush for a motor vehicle |
DE102015215425B3 (en) * | 2015-08-13 | 2016-06-02 | Schaeffler Technologies AG & Co. KG | Switchable bearing bush for a motor vehicle |
DE102015215426B4 (en) * | 2015-08-13 | 2019-06-19 | Schaeffler Technologies AG & Co. KG | Switchable bearing bush for a motor vehicle |
DE102015215423A1 (en) * | 2015-08-13 | 2017-02-16 | Schaeffler Technologies AG & Co. KG | Switchable bearing bush for a motor vehicle |
-
2015
- 2015-07-30 DE DE102015214519.0A patent/DE102015214519B4/en not_active Expired - Fee Related
-
2016
- 2016-01-26 US US15/557,254 patent/US10414226B2/en not_active Expired - Fee Related
- 2016-01-26 EP EP16706128.2A patent/EP3274198A1/en not_active Withdrawn
- 2016-01-26 WO PCT/DE2016/200036 patent/WO2016150436A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102015214519A1 (en) | 2016-09-29 |
US20180050574A1 (en) | 2018-02-22 |
WO2016150436A1 (en) | 2016-09-29 |
DE102015214519B4 (en) | 2018-02-22 |
US10414226B2 (en) | 2019-09-17 |
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Legal Events
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
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17Q | First examination report despatched |
Effective date: 20181008 |
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18W | Application withdrawn |
Effective date: 20181018 |
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P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230522 |