GB2046872A - Reinforcement in rolling bellows of fluid springs - Google Patents
Reinforcement in rolling bellows of fluid springs Download PDFInfo
- Publication number
- GB2046872A GB2046872A GB8003845A GB8003845A GB2046872A GB 2046872 A GB2046872 A GB 2046872A GB 8003845 A GB8003845 A GB 8003845A GB 8003845 A GB8003845 A GB 8003845A GB 2046872 A GB2046872 A GB 2046872A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bellows
- reinforcing members
- belt
- roller
- roller bellows
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims description 5
- 230000002787 reinforcement Effects 0.000 title description 3
- 239000012530 fluid Substances 0.000 title 1
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 239000011324 bead Substances 0.000 claims abstract description 13
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 6
- 229920001971 elastomer Polymers 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 239000005060 rubber Substances 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
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
- F16F9/05—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 the flexible wall being of the rolling diaphragm type
-
- 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
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/06—Bellows pistons
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Diaphragms And Bellows (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A roller bellows for pneumatic vehicle suspensions, which is made from rubber or rubber-like plastics materials and has embedded filament- like reinforcing members 6 extending between securing beads 7 at an angle relative to the longitudinal axis of the bellows, is in addition provided with a substantially cylindrical tension-resistant belt located in the central region of the roller bellows, in which the belt embedded in the bellows wall is formed of filament-like reinforcing members 8 which extend parallel to and are the same as the reinforcing members 6. There are two plies of main reinforcing members 6 intersecting each other, and two plies of belt reinforcing members 8. <IMAGE>
Description
SPECIFICATION
Roller bellows for pneumatic suspensions for vehicles
The present invention relates to a roller bellows for pneumatic vehicle suspensions which bellows is made from rubber or rubber-like plastics materials and having embedded filament-like reinforcing members extending between securing beads at an angle relative to the longitudinal axis of the bellows and, in addition, is provided with a substantially cylindrical tension-resistant belt located in the central region of the roller bellows.
Pneumatic suspensions are increasingly successful in vehicle construction above all due to their ready adaptability to alternating loads.
Their actual suspension means is the suspension bellows controllably impinged upon with compressed air, the design and basic shape of which are determined in dependence upon the prevailing requirements of suspension value, bearing capacity, spring deflections, lateral displaceability and other parameters. Among the various types of suspension bellows available, roller bellows produced as cylindrical tubular bodies provided with drawn-in securing beads have proved to be suitable for use in automotive road vehicles, since on the one hand with the shaping of the pistons, the natural frequency may be optionally influenced and for each type of vehicle the ideal deflection adjusted, and on the other hand installation and sealing may be simply effected in the manner of pneumatic tyres by slipping the securing beads onto conical fittings without additional assembly work.Further advantages of their preferred use also reside in the omission of otherwise required additional air volume and external mechanical guides.
All known bellows designs are based on a static internal pressure impingement of an order of magnitude of about 7 bar, in exceptional cases up to 9 bar. Having regard to results obtained with practical driving tests it is possible to utilise higher internal pressures up to 1 5 to 20 bar and, moreover, considerable advantages with regard to more accurately maintaining a constant natural frequency, and lesser space requirement as a result of possible diameter reductions, are to be expected. The necessity of having to absorb the bellows wall forces, which increased in a direct ratio to the internal pressure, led to unexpected difficulties.The introduction of reinforcing elements of a higher tension resistance was opposed by the generally inferior adhesion of the materials in question, for example, steel or aromatic polyamides, to the elastomeric embedding material, with the ensuing disadvantage of reduced life of the suspension bellows. In the same manner, the duplication of the number of reinforcing plies has the same end effect.
Hence the object of the invention is to reinforce the roller bellows used for the pneu
matic suspensions in vehicles adequately without impairing their life span and general serviceability as well as being able to absorb substantially higher internal pressures than hitherto used.
According to the present invention there is provided a roller bellows for pneumatic vehicle suspensions which is made from rubber or rubber-like plastics materials and having embedded filament-like reinforcing members extending between securing beads at an angle relative to the longitudinal axis of the bellows and in addition is provided with a substantially cylindrical tension-resistant belt located in the central region of the roller bellows, in which the belt embedded in the bellows wall is formed of filament-like reinforcing members which extend parallel to and are the same as the reinforcing members extending between the bead.
In a further development of the invention, the belt is built up of two or more plies of intersecting reinforcing members, whereby the axial width of the belt plies may be stepped increasing or reducing outwardly or alternately increasing and reducing. In accordance with an alternative embodiment of the invention, the edge faces of the belt are folded over and then folded back towards themselves in the axial direction. The angle of slope of the reinforcing members forming the belt towards the cross-sectional plane of the bellows is aimed in all cases to that of the basic reinforcement, which may optionally comprise fabric or unwoven individual filaments, and is preferably of an order of magnitude of from 20 to 30 , preferably from 21 to 26 .
The belt development in accordance with the invention provides the roller bellows with the required pressure resistance and stability without impairing their rolling off ability or restricting their operational safety and durability in use in any way. The retention of conventionally used and proved reinforcing members ensures the advantage of favourably priced configuration compared with other highly resistant fibre substances, and at the same time ensures a good adhesive connection with the elastomeric material of the bellows walls. With the alignment towards the basic reinforcement, the invention introduces the so-called 'equilibrium angle' with the result that the outer diameter of the cylindrical bellows portion itself remains unchanged in all regions even when subjected to severe deflection movements.
The present invention will be further illustrated, by way of example, with reference to the accompanying drawing, in which:
Figure 1 is a section in the longitudinal direction, of a pneumatic spring roller bellows in the assembled condition; and
Figure 2 shows, on an enlarged scale, the arrangement of the reinforcing members in the region of encircled portion II in Fig. 1.
The roller bellows 3 shown in the drawing is, in use, to be inserted between the bodywork and an axle of an omnibus in such a manner that, in the course of deflection movements, it may be in rolling engagement with the conical jacket surfaces of two supporting pistons 4 associated with mutually suspended vehicle portions. The supporting pistons 4, in turn, support slightly conical fitting attachments 5, onto which attachments beads 31 of the bellows 3 are slipped during installation of the bellows and thereby seal off the bellows interior against the exterior during use.
The roller bellows 3 is produced in the form of a tubular body drawn in in diameter at both ends and having beads 31 made of synthetic rubber and being reinforced by fabric plies 6 embedded in the wall of the tubular body.
The filaments of the fabric plies 6 shown in full lines in the fragmentary section in Fig. 2 extend between the beads and, in the region of the maximum bellows diameter, at an angle of about 23 relative to the cross-sectional plane of the bellows and are anchored in the beads 31 by being wrapped around rigid core rings 7 and folded over. The central cylindrical section of the roller bellows, on the other hand, is thickened relative to the adjacent walls by the provision of a belt 8 located radially above the fabric plies 6 and formed of two plies of reinforcing members. The two belt plies shown in Fig. 2 in broken lines, are each formed of unwoven filaments or wires extending parallel to each other at an angle also of about 23 relative to the cross-sectional plane of the bellows, and which intersect from one ply to the other, and consequently extend substantially parallel with the fabric filaments of the plies 6. The outer ply of the belt 8 in the embodiment shown extends above and below the inner ply up to the arcuate sections of the wall portion of the roller bellows and therefore, with heavy deflection, participates in the rolling movements.
Claims (7)
1. A roller bellows for pneumatic vehicle suspensions which is made from rubber or rubber-like plastics materials and having embedded filament-like reinforcing members extending between securing beads at an angle relative to the longitudinal axis of the bellows and in addition is provided with a substantially cylindrical tension-resistant belt located in the central region of the roller bellows, in which the belt embedded in the bellows wall is formed of filament-like reinforcing members which extend parallel to and are the same as the reinforcing members extending between the beads.
2. A roller bellows as claimed in claim 1, in which the belt is built up from two or more plies of reinforcing members intersecting one another.
3. A roller bellows as claimed in claim 2, in which the axial width of the belt plies are stepped increasing or reducing outwardly or alternately increasing and reducing.
4. A roller bellows as claimed in claim 1, 2 or 3, in which the belt is located in a wall portion thickened relative to the bellows portions capable of rolling off, outside the reinforcing members extending between the beads.
5. A roller bellows as claimed in any one of claims 1 to 4, in which the edge faces of the belt are foled over and back towards themselves in the axial direction.
6. A roller bellows as claimed in any one of claims 1 to 5, in which the reinforcing members forming the belt are aligned at an angle of from 20 to 30 relative to the crosssectional plane of the bellows.
7. A roller bellows, substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792904522 DE2904522A1 (en) | 1979-02-07 | 1979-02-07 | ROLL BELLOWS FOR VEHICLE AIR SUSPENSIONS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2046872A true GB2046872A (en) | 1980-11-19 |
| GB2046872B GB2046872B (en) | 1983-04-20 |
Family
ID=6062326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8003845A Expired GB2046872B (en) | 1979-02-07 | 1980-02-05 | Reinforcement in rolling bellows of fluid springs |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2904522A1 (en) |
| FR (1) | FR2448661A1 (en) |
| GB (1) | GB2046872B (en) |
| IT (1) | IT1148802B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0510417A1 (en) * | 1991-04-11 | 1992-10-28 | Continental Aktiengesellschaft | Cushion-type air spring with flexible bellow made out of elastomer material |
| GB2372795A (en) * | 2001-02-28 | 2002-09-04 | Gibbs Int Tech Ltd | Internally reinforced air springs |
| WO2004109149A1 (en) * | 2003-06-04 | 2004-12-16 | Phoenix Ag | Spring device, especially for the rail vehicle sector |
| US20100178182A1 (en) * | 2009-01-09 | 2010-07-15 | Simmons Tom M | Helical bellows, pump including same and method of bellows fabrication |
| CN105000030A (en) * | 2015-08-04 | 2015-10-28 | 青岛四方车辆研究所有限公司 | Belt bundle type capsule and air spring with capsule |
| WO2016184068A1 (en) * | 2015-05-19 | 2016-11-24 | 中车青岛四方车辆研究所有限公司 | Nonlinear auxiliary spring, belted capsule and air spring |
| CN113915275A (en) * | 2021-10-29 | 2022-01-11 | 新一代汽车底盘系统(马鞍山)有限公司 | An air spring and an air suspension having the same |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5580033A (en) * | 1995-04-07 | 1996-12-03 | The Goodyear Tire & Rubber Company | Bellows type air spring and method of making same |
| DE29517741U1 (en) * | 1995-11-09 | 1996-01-04 | Jürgen Rommel GmbH, 71409 Schwaikheim | Roller bellows without radial guides as a single and multi-stage design with roller folds in the direction of actuation |
| JP2003509648A (en) | 1999-09-17 | 2003-03-11 | フェニックス アクチエンゲゼルシャフト | Air spring device |
| DE50011684D1 (en) | 1999-10-15 | 2005-12-29 | Freudenberg Carl Kg | AIR SPRING ARRANGEMENT |
| WO2001084010A1 (en) | 2000-05-02 | 2001-11-08 | Phoenix Ag | External guide from fiber-reinforced plastic for use in a pneumatic spring system |
| DE10220528B4 (en) * | 2001-05-18 | 2013-08-22 | Carl Freudenberg Kg | Air spring arrangement |
| WO2002103218A1 (en) | 2001-06-15 | 2002-12-27 | Phoenix Ag | Air-spring system |
| DE10229584B4 (en) * | 2001-07-11 | 2008-07-31 | Vibracoustic Gmbh & Co. Kg | Strut for a suspension of vehicles with a system for compensation of lateral forces |
| DE10302495B4 (en) * | 2002-02-27 | 2017-02-23 | Vibracoustic Gmbh & Co. Kg | Air spring arrangement |
| DE10225986A1 (en) | 2002-06-11 | 2003-12-24 | Phoenix Ag | Air spring arrangement |
| EP1424506B1 (en) | 2002-11-29 | 2008-04-09 | Carl Freudenberg KG | Air spring arrangement |
| DE102004011466A1 (en) | 2003-04-03 | 2004-10-21 | Phoenix Ag | Vehicle pneumatic spring arrangement has dynamic valve system that opens/closes connection or chokes air feed depending on air column frequency and/or amplitude and/or pressure and/or air speed |
| DE10319474B4 (en) | 2003-04-29 | 2008-10-16 | Vibracoustic Gmbh & Co. Kg | Air spring-damper unit |
| DE10324145B4 (en) * | 2003-05-26 | 2006-06-01 | Vibracoustic Gmbh & Co. Kg | Use of a tubular body |
| DE10330198B4 (en) * | 2003-07-03 | 2013-10-31 | Vibracoustic Gmbh & Co. Kg | Suspension of a vehicle |
| DE102004023561A1 (en) | 2004-05-13 | 2005-12-08 | Vibracoustic Gmbh & Co. Kg | Air spring arrangement |
| DE102005051706B3 (en) * | 2005-10-28 | 2007-04-05 | Zf Friedrichshafen Ag | Pneumatic spring has tubular bellows, which are connected with closing element at its ends whereby binding element is provided with melting coating and binding element has glass like base plate |
| DE102009028158A1 (en) | 2009-07-31 | 2011-03-24 | Saf-Holland Gmbh | Air bellows for an air spring |
| DE102017201446A1 (en) * | 2017-01-30 | 2018-08-02 | Contitech Luftfedersysteme Gmbh | suspension bellows |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3897941A (en) * | 1974-03-28 | 1975-08-05 | Goodyear Tire & Rubber | Reinforced fluid spring |
| AT340209B (en) * | 1975-04-07 | 1977-12-12 | Taurus Gumiipari Vallalat | BELLOWS FOR AIR SPRINGS |
| DE2547409A1 (en) * | 1975-10-23 | 1977-04-28 | Continental Gummi Werke Ag | AIR BELLOWS, IN PARTICULAR ROLLING BOWLS FOR VEHICLE SUSPENSIONS |
-
1979
- 1979-02-07 DE DE19792904522 patent/DE2904522A1/en not_active Withdrawn
-
1980
- 1980-01-14 IT IT19202/80A patent/IT1148802B/en active
- 1980-02-05 GB GB8003845A patent/GB2046872B/en not_active Expired
- 1980-02-06 FR FR8002572A patent/FR2448661A1/en active Granted
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0510417A1 (en) * | 1991-04-11 | 1992-10-28 | Continental Aktiengesellschaft | Cushion-type air spring with flexible bellow made out of elastomer material |
| GB2372795A (en) * | 2001-02-28 | 2002-09-04 | Gibbs Int Tech Ltd | Internally reinforced air springs |
| WO2004109149A1 (en) * | 2003-06-04 | 2004-12-16 | Phoenix Ag | Spring device, especially for the rail vehicle sector |
| US20100178182A1 (en) * | 2009-01-09 | 2010-07-15 | Simmons Tom M | Helical bellows, pump including same and method of bellows fabrication |
| WO2016184068A1 (en) * | 2015-05-19 | 2016-11-24 | 中车青岛四方车辆研究所有限公司 | Nonlinear auxiliary spring, belted capsule and air spring |
| US20180058534A1 (en) * | 2015-05-19 | 2018-03-01 | Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd. | Nonlinear auxiliary spring, new-belted diaphragm and air spring |
| CN105000030A (en) * | 2015-08-04 | 2015-10-28 | 青岛四方车辆研究所有限公司 | Belt bundle type capsule and air spring with capsule |
| CN113915275A (en) * | 2021-10-29 | 2022-01-11 | 新一代汽车底盘系统(马鞍山)有限公司 | An air spring and an air suspension having the same |
| CN113915275B (en) * | 2021-10-29 | 2024-01-19 | 新一代汽车底盘系统(马鞍山)有限公司 | Air spring and air suspension with same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2904522A1 (en) | 1980-08-21 |
| FR2448661B3 (en) | 1981-10-16 |
| IT1148802B (en) | 1986-12-03 |
| IT8019202A0 (en) | 1980-01-14 |
| FR2448661A1 (en) | 1980-09-05 |
| GB2046872B (en) | 1983-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2046872A (en) | Reinforcement in rolling bellows of fluid springs | |
| US3897941A (en) | Reinforced fluid spring | |
| US3438309A (en) | Pneumatic springs | |
| AU645436B2 (en) | Fabric reinforced stiffener for air springs | |
| US4203481A (en) | Pneumatic tire, rim and combination thereof | |
| US3095027A (en) | Pneumatic tire | |
| US9127737B2 (en) | Unreinforced elastomeric spring wall, gas spring and method | |
| US5309971A (en) | Tire flipper structure | |
| US9387865B2 (en) | End member assemblies as well as gas spring assemblies and methods of manufacture including same | |
| EP0295393A2 (en) | End cap assembly for air spring | |
| US20090057967A1 (en) | Gas spring assembly and method of manufacture | |
| US20180023652A1 (en) | End member assemblies as well as gas spring assemblies and suspension systems including same | |
| CA2830537C (en) | Flexible wall and compression core assemblies as well as gas spring assemblies and methods including same | |
| AU2013288902B2 (en) | End members for rail spring assemblies and suspension systems including same | |
| EP0613795B1 (en) | Run-flat safety tyre | |
| RU2234424C2 (en) | Method of mounting pneumatic tire on wheel hub | |
| GB2104011A (en) | Pneumatic vehicle tyre | |
| FI82217C (en) | KOMBINATION AV PNEUMATISKT DAECK OCH HJULFAELG. | |
| US10508703B2 (en) | Lateral support elements, gas spring assemblies, suspension systems and methods | |
| US9194453B2 (en) | Gas spring assembly and method | |
| US10197126B2 (en) | Gas spring end members as well as gas spring assemblies, suspension systems and methods | |
| US20200156420A1 (en) | Puncture resistant tube | |
| GB2456750A (en) | A rolling diaphragm air spring | |
| GB2076111A (en) | Rolling diaphragm fluid springs | |
| CN1942689B (en) | Air spring rolled bellows made of elastomeric material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19970205 |