WO2015022102A1 - Air spring rolling lobe with supporting fabric - Google Patents
Air spring rolling lobe with supporting fabric Download PDFInfo
- Publication number
- WO2015022102A1 WO2015022102A1 PCT/EP2014/062312 EP2014062312W WO2015022102A1 WO 2015022102 A1 WO2015022102 A1 WO 2015022102A1 EP 2014062312 W EP2014062312 W EP 2014062312W WO 2015022102 A1 WO2015022102 A1 WO 2015022102A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air spring
- fabric
- weft
- warp
- bellows
- Prior art date
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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/0409—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by the wall structure
Definitions
- the invention relates to an air spring with a clamped between an air spring piston and an air spring cover AmsterdamfederroUbalg of elastomeric material, wherein the LuftfederroUbalg forms a substantially cylindrical working chamber with a rolling on compression and rebound on the air spring piston rolling fold with filling in the elastomeric material embedded Reinforcements is provided and on its outer side has a protective layer of a textile structure that extends at least partially over its radially outer surfaces
- Such air springs are known to us are often used for passenger cars,
- An air spring bellows for such an air spring of a passenger car is usually made of elastomeric materials with reinforcing elements.
- An air spring bellows is initially assembled as a cylindrical body of a plurality of rubber layers and layers of - partially rubberized - strength members, ie assembled so that a tube with possibly several integrated in rubber layers of reinforcements.
- the strength members are aligned in their positions at an angle of about 53 °, namely in the so-called thread angle to the axial normal of the cylindrical body.
- the reinforcing elements in adjacent layers are arranged crossed to one another, that is to say they are aligned angularly once on one side and once on the other side, thus forming a so-called thread groove.
- the thread angle can be defined differently with respect to the axis, but is here understood as the angle that arises between the vertical, ie the normal to the bellows axis and the reinforcements. A large angle would then be able to reach 90 ° in an extreme case, whereby the reinforcing elements of such a layer ran parallel to the bellows axis, while a small angle could reach 0 ° and the reinforcing elements of such a layer would thus cross the bellows axis vertically.
- the rolling bellows is flared and vulcanised. In this manufacturing step, the different diameters are produced and fixed by the heat curing vulcanization process.
- the life of a Luftfederrollbalges of the type mentioned is often not determined by the breakage of a reinforcing agent, but by the wear of the bellows wall.
- the bellows wall is exposed by the rolling movement and the simultaneous capture of shear forces considerable stress. It is therefore known to coat the bellows wall with various substances that improve the lubricity of the surface
- EP 1 843 060 A1 discloses a generic air spring, in which the air spring bellows has on at least one of its radial lateral surfaces a protective layer, which extends over the lateral surface, of a textile structure which is formed as a warp-knit fabric.
- a protective layer which extends over the lateral surface, of a textile structure which is formed as a warp-knit fabric.
- the invention has for its object to provide an air spring of the type described, in which a protection against mechanical wear achieved by simple and cost-effective measures, simplifies the production and in comparison to the prior art improved life at the same
- the textile structure is formed as a fabric of stretchable and substantially perpendicular warp and weft threads, wherein the / weft has a greater extensibility than the / the warp and in which the warp threads in the longitudinal direction of the air spring rolling, i. are aligned substantially in the rolling direction of the roll fold and the weft threads substantially in the circumferential direction of the Lucasfederrollbalg.
- Such a textile structure has the advantage that the entire elastomeric jacket surface is very well protected against external influences, in particular in the rolling regions.
- Such simple, consisting of warp and weft threads structures can be relatively easy to produce and apply, and preferably by a
- the outer fabric structure supports the structure of the Lucasfederrollbalgs in the longitudinal direction. At the same time it facilitates the rolling of the bellows on the air spring piston. Both lead Bellows with the outer fabric structure according to the invention hold much longer.
- the warp of the fabric has a stretchability of 15 to 18% of its original length and the weft has a ductility of 40 to 150% of its original length.
- the structure of two such differently stretchable threads one of which is more flexible than the other, also ensures good manufacturability of the fabric.
- a further advantageous embodiment which is particularly easy to produce, consists in that the increased extensibility of the weft thread is determined by texturing provided on the outside of the weft thread in contrast to the warp thread, that is, e.g. by a
- a further advantageous embodiment consists in that the reinforcing elements embedded in the elastomeric material are formed in a diamond-shaped manner and the warp threads of the fabric run essentially centrally through the thread grooves of the crossed fabric layers.
- a cylindrical hose roll was provided with the textile structure thus formed and completed in a test bench trial, surprisingly more than twice as many load changes as the best to date tested standard bellows of the same type.
- Diameter of the spatially shaped fabric body is formed smaller than the outer diameter of the Luftfederrollbalgs and is mounted under tension on the Luftfederrollbalg, so about as a support stocking. This improves the adaptation of the textile structure / the fabric to the air bag. Thus, the textile structure can be pulled over the air spring bellows like an elastic stocking before vulcanization.
- This stocking is oriented so that the threads with low elongation in the direction of the rolling motion of the bellows (longitudinal direction) and the threads with great elongation perpendicular to it (in the circumferential direction). Since the diameter of the stocking is smaller than the outer diameter of the air spring bellows, the yarns are slightly biased in the circumferential direction and securely incorporated into the elastomer matrix during vulcanization. In the sense of a simple pre-assembly, there is a further advantageous
- the spatially shaped tissue body before the Applying to the Heilfederrollbalgs is made of a flat blank of the fabric, preferably from a rectangular, rhombus- or trapezoidal blank by two opposite edges of the blank are joined together, for. B. by ultrasonic welding, gluing, sewing etc.
- a further advantageous embodiment of the method is that the spatially shaped fabric body is treated with an adhesive solution, preferably with a solution of isocyanate and toluene, prior to application to the air spring rolling bellows (10). This is done to ensure the adhesion of the textile structure to the outer rubber of the air spring bellows. The further processing then takes place only when the fabric has dried.
- Fig. 1 a fiction, contemporary air spring in section
- FIG. 3 shows a sketch of the production of the textile structure according to FIG.
- Fig. 4 is a Lucasfederrollbalg an air spring according to the invention in the not yet installed state directly after production
- FIG. 5 shows a schematic diagram of the relative position of warp threads and weft threads and diamond-shaped crossed embedded reinforcements on the body of a Beerfederrollbalgs an air spring of FIG .. 1
- Fig. 6 as a schematic diagram of the relative position of warp threads and weft threads and diamond-shaped crossed embedded reinforcements in the roll fold of a Beerfederrollbalgs an air spring of FIG .. 1
- FIG. 1 an air spring 1 is shown with a Luftfederrollbalg 2.
- the rolling piston 5 is arranged so that it protrudes with its the second end of the air spring bellows 2 associated end in the interior 7 of the bellows 2 and the Heilfederrollbalg 2 forms a roll fold 8 in a known manner, resulting in relative movements between
- the air spring cover 3 is attached to a body not shown in detail 10 and the rolling piston 5 on a non-illustrated chassis part 11 of a vehicle, not shown.
- the Heilfederrollbalg 2 has on its outer radial surface 12 a textile structure in the form of a fabric 13 which extends over the entire lateral surface 12.
- the Gewebel3 is firmly connected by vulcanization with the elastomeric material of the air spring bellows 2.
- FIG. 2 shows the textile structure 13 as a fabric of stretchable and substantially perpendicular to each other extending warp and weft threads 14 and 15.
- the weft The warp threads 4 are in the longitudinal direction of the Lucasfederrollbalg s 2, ie are oriented substantially in the rolling direction of the roll fold 8 and the weft threads substantially in the circumferential direction of the Lucasfederrollbalg 2.
- the warp threads 14 of the fabric 13 shown here have a stretchability of 18% of their original length and the weft thread 15 a stretchability 120% of their original length.
- Fig. 3 shows a sketch of the production of the textile structure or the fabric 13 as a spatially shaped cylindrically shaped fabric body 16, which is formed from a rectangular blank 17 here by two opposite edges 18 and 19 of Blank 16 are joined together by gluing.
- Fig. 4 shows once again a LucasfederroUbalg 2 in the not yet installed state directly after production.
- the directions are shown in the warp and weft threads 14 and 15 are arranged relative to the HeilfederroUbalg 2, namely warp threads l4 in the longitudinal direction 20 of LucasfederroUbalg 2, ie substantially in the rolling direction of the roll fold 8 and the weft threads 15 substantially in the circumferential direction 21 of HeilfederroUbalg 2.
- Fig. 5 and 6 show a schematic sketch of the relative position of Kettfädenl4 and weft threads 15 and diamond-shaped crossed embedded reinforcements 22 and 23 to each other.
- FIG. 5 shows the state of the air spring roll 2 loaded only by internal pressure
- FIG. 6 shows the additionally stretched state in the roll fold.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Diaphragms And Bellows (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2016001878A MX2016001878A (en) | 2013-08-16 | 2014-06-13 | Air spring rolling lobe with supporting fabric. |
BR112016002934A BR112016002934A2 (en) | 2013-08-16 | 2014-06-13 | air spring rolling bellows with support fabric |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013108900.3 | 2013-08-16 | ||
DE102013108900.3A DE102013108900A1 (en) | 2013-08-16 | 2013-08-16 | Air spring roll with support fabric |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015022102A1 true WO2015022102A1 (en) | 2015-02-19 |
Family
ID=50981493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/062312 WO2015022102A1 (en) | 2013-08-16 | 2014-06-13 | Air spring rolling lobe with supporting fabric |
Country Status (4)
Country | Link |
---|---|
BR (1) | BR112016002934A2 (en) |
DE (1) | DE102013108900A1 (en) |
MX (1) | MX2016001878A (en) |
WO (1) | WO2015022102A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202017104783U1 (en) | 2017-08-09 | 2017-10-20 | Trigum Engineering Gmbh | Air spring with improved air bag protection |
US9890829B2 (en) * | 2016-04-14 | 2018-02-13 | Air Spring Protection Systems, LLC | Protective sheet for vehicle suspension systems and method of installation thereof |
DE102017118112A1 (en) | 2017-08-09 | 2019-02-14 | Trigum Engineering Gmbh | Air spring with improved air bag protection |
CN114060446A (en) * | 2020-07-30 | 2022-02-18 | 现代自动车株式会社 | Air spring device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016217994A1 (en) | 2016-09-20 | 2018-03-22 | Contitech Luftfedersysteme Gmbh | suspension bellows |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001020148A (en) * | 1999-07-12 | 2001-01-23 | Bridgestone Corp | Reinforcing cord for air cushion and air cushion |
WO2001084010A1 (en) * | 2000-05-02 | 2001-11-08 | Phoenix Ag | External guide from fiber-reinforced plastic for use in a pneumatic spring system |
DE102004007332A1 (en) | 2004-02-14 | 2005-09-01 | Continental Aktiengesellschaft | Air spring for motor vehicle suspension systems comprises two support elements and a roller bellows whose outer surface is less adhesive than its inner surface |
EP1843060A1 (en) | 2006-04-06 | 2007-10-10 | ContiTech Luftfedersysteme GmbH | Wear-resistant pneumatic springs |
GB2456750A (en) * | 2007-11-10 | 2009-07-29 | Ford Global Tech Llc | A rolling diaphragm air spring |
DE102008015610A1 (en) * | 2008-03-26 | 2009-10-01 | Continental Aktiengesellschaft | Air spring for motor vehicle, has cover, rolling piston, bellow mounted at cover and at rolling piston, and outer guide, where bellow has inner layer and outer layer |
-
2013
- 2013-08-16 DE DE102013108900.3A patent/DE102013108900A1/en active Granted
-
2014
- 2014-06-13 WO PCT/EP2014/062312 patent/WO2015022102A1/en active Application Filing
- 2014-06-13 BR BR112016002934A patent/BR112016002934A2/en not_active Application Discontinuation
- 2014-06-13 MX MX2016001878A patent/MX2016001878A/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001020148A (en) * | 1999-07-12 | 2001-01-23 | Bridgestone Corp | Reinforcing cord for air cushion and air cushion |
WO2001084010A1 (en) * | 2000-05-02 | 2001-11-08 | Phoenix Ag | External guide from fiber-reinforced plastic for use in a pneumatic spring system |
DE102004007332A1 (en) | 2004-02-14 | 2005-09-01 | Continental Aktiengesellschaft | Air spring for motor vehicle suspension systems comprises two support elements and a roller bellows whose outer surface is less adhesive than its inner surface |
EP1843060A1 (en) | 2006-04-06 | 2007-10-10 | ContiTech Luftfedersysteme GmbH | Wear-resistant pneumatic springs |
GB2456750A (en) * | 2007-11-10 | 2009-07-29 | Ford Global Tech Llc | A rolling diaphragm air spring |
DE102008015610A1 (en) * | 2008-03-26 | 2009-10-01 | Continental Aktiengesellschaft | Air spring for motor vehicle, has cover, rolling piston, bellow mounted at cover and at rolling piston, and outer guide, where bellow has inner layer and outer layer |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9890829B2 (en) * | 2016-04-14 | 2018-02-13 | Air Spring Protection Systems, LLC | Protective sheet for vehicle suspension systems and method of installation thereof |
DE202017104783U1 (en) | 2017-08-09 | 2017-10-20 | Trigum Engineering Gmbh | Air spring with improved air bag protection |
DE102017118112A1 (en) | 2017-08-09 | 2019-02-14 | Trigum Engineering Gmbh | Air spring with improved air bag protection |
CN114060446A (en) * | 2020-07-30 | 2022-02-18 | 现代自动车株式会社 | Air spring device |
Also Published As
Publication number | Publication date |
---|---|
DE102013108900A1 (en) | 2015-02-19 |
MX2016001878A (en) | 2016-05-24 |
BR112016002934A2 (en) | 2017-08-01 |
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