• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    CONCLUSION Air spring (10) for a vehicle (50), comprising a bellows (12) with a pair of ends (16, 36) and defining an air spring chamber (20), one of the ends (36) being formed on a piston (30). ) with a circumferential surface (34) for the support of a rolling lobe (14) has the bellows nal 'the ends move towards and away from each other. According to the invention, the piston (30) is formed as a pressure vessel separate from the air spring chamber (20) for a compressed air system (70) in the vehicle (50).
    公开号:SE1051252A1
    申请号:SE1051252
    申请日:2010-11-29
    公开日:2012-05-30
    发明作者:Sami Teppola
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    TECHNICAL FIELD The invention relates to an air spring for a vehicle, comprising a bellows with a pair of ends and defining an air spring chamber, one of the ends being formed on a piston with a circumferential surface for the support of a rolling beam has the bellows when the ends touch towards and from each other. The invention also relates to a piston for such an air spring and a vehicle provided with at least one such air spring.
    BACKGROUND Sadana air springs are commonly used in wheeled suspension vehicles, such as trucks and trailers. In addition to providing good suspension function while driving the vehicle, such air springs also have the function of being advantageously easily adaptable to varying vehicle loads or different driving situations by filling or draining compressed air via a compressed air system in the vehicle. The ends end serve to connect the opposite spirits of the air spring with the components to be suspended and at least one of the ends may also have an inlet and outlet opening for said filling or draining of compressed air. The piston needs to have a relatively rigid diameter and axial length in order to be able to correctly support the bellows' rolling lobe over the entire stroke of the air spring.
    SUMMARY OF THE INVENTION An object of the invention is to expand the functions of an air spring of the type indicated in the introduction, without substantially changing its construction.
    This is achieved by the features set forth in the appended claims.
    According to a consideration of the invention, the piston is designed as a pressure vessel separate from the air spring chamber for a compressed air system in the vehicle. As a result, the already existing space in the piston, which is otherwise ineffective or in common with the air spring chamber, on a simple and space-saving salt can partially replace the separate pressure vessels which enter the compressed air system and thereby free up space and reduce the weight of the vehicle. If one considers that a typical piston can hold about 5 liters of air, it will be appreciated that between two and six air springs in a truck can provide a volume of compressed air corresponding to a separate pressure vessel. between 10 and 30 liters. The piston serving as a pressure vessel can also serve as a local pressure vessel for the associated air spring and / or even for adjacent air springs, so that the compressed air can be distributed over short line carriages with small line losses and fast response times.
    The piston has an inlet and outlet opening for receiving and releasing compressed air from resp. to the compressed air system. The inlet and outlet opening can be arranged in the end of the air spring formed on the piston. The air spring will then have two compressed air connections, one for the air spring chamber and one for the piston designed as a pressure vessel.
    The piston may be formed by a pair of joined parts. The piston can then be the production of a pair of pressed shell-shaped parts, which can be joined together by a welded joint. The parts can also be joined together by a flange ribbon.
    The flange ribbon can then connect one end of the bellows to the piston.
    Other features and components of the invention may be apparent from the claims and the accompanying description of exemplary embodiments.
    BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view with broken away parts of a wheel axle suspension of a vehicle with an air spring according to the invention; FIG. 2 is a view obliquely from above in longitudinal section of an air spring according to the invention; FIG. 3 is a view obliquely from above in longitudinal section of a piston for a luffijader according to the invention; FIG. 4 is a sectional view with broken away parts showing a lower end portion of another piston for an air spring according to the invention; and FIG. 5 is a sectional view with broken away parts showing an upper end portion of a further piston for an air spring according to the invention.
    DETAILED DESCRIPTION OF EMBODIMENTS IN FIG. 1 shows an example of the use of an air suspension 10 according to the invention as a spring element at one side of a chassis 52 for a vehicle only partially shown 50, where a frame beam 54 of the chassis 52 supports a rear wheel suspension 60.
    The wheel suspension 60 has a leaf spring package 64, one end of which is pivotally connected to the frame beam 54 via a beam head 56 and the other end of which is connected to the frame beam 54 via the air spring 10. Between the ends of the spring package 64 is anchored a wheel axle beam 62, on which mounted one axle for a rear wheel not shown either. As further indicated in FIG. 1, the wheel suspension 60 may also include a shock absorber 66.
    In the example shown, the vehicle 50 may be biaxial. The rear wheel suspension 60 can then have two airfoils 10, i.e. one near each rear wheel. In other types of axle arrangements with flora wheel suspensions (not shown), the vehicle may have several, for example four or six, such air springs 10.
    In FIG. 2 shows in more detail an air spring 10 according to the invention. The air spring 10 has on its edge a roughly tubular roller bellows 12, which together with an upper end 16 and a piston 30 defines an air spring chamber 20. Closer to the top, the upper end of the bellows 12 is connected to a random row 18 of the end 16 and its lower end is tangent. connected to a random row 38 at an upper end or end 32 of the piston 30. These sealing end connections may be formed on other known salt than 4 as shown in FIG. 2; for example, the inner end 32 of the piston 30 may be connected to a plate 32 '(FIG. 3) which clamps a thickened inner spirit 12' of the bellows against the piston 30 at the random row 38.
    As further shown in FIG. 1 together with FIG. 2, the upper end 16 of the air spring 10 may be connected to the frame beam 54 via a holder 58 and a number of threaded fixed elements 46, and its lower end 36, i.e. the bottom of the piston 30, may be connected to the spring package 64 via a central screw connection 44.
    The air spring 10 fulfills its resilient function by, when the air in the air spring chamber 20 is alternately compressed and expanded during the vehicle's suspension movements, a rolling lobe 14 of the bellows 12 reciprocates, guided along a circumferential surface 34 of the piston 30. The air spring 10 spring chamber 20 has on the same edge salt an inlet and outlet opening 22 which is connected via a connection nipple 72 and a line 74 to a schematically represented, central compressed air system 70 of the vehicle 50.
    In the example shown, the compressed air system 70 is controlled by a vehicle computer 80, but can also be controlled mechanically, by distributing compressed air to different consumers, such as one or more additional air springs 10 in the vehicle 50.
    The piston 30 of the air spring 10 is designed as a pressure vessel separate from the air spring chamber 20 for the compressed air system 70 in the vehicle. The piston 30 also has an inlet and outlet opening 40 which likewise via a connection nipple 76 and a line 78 is connected to the central compressed air system 70. Through other lines, pumps, valves etc. not shown in the compressed air system 70, the piston 30 can be pressurized to store compressed air and, if necessary, dispense compressed air to desired different users, such as the air spring chamber 20, in the system 60.
    As can be seen from FIG. 3, the piston 30 may be made of a pair of shell-shaped parts 30a, 30b of e.g. deep-drawn or roll-shaped / pressure-turned steel plate, which are joined by a circumferential weld 30c. The inlet and outlet opening 40 may be formed as a pressed collar in the bottom 36 of the piston 30, and a central pressed recess 42 in the bottom 36 may have an inner passage for it in FIG. 1 indicated the central screw ribbon 44.
    As indicated in FIG. 4, both parts of the piston 30 may be joined together by a flux connection 30d with a seal, such as an O-ring 30d '. The lower part 30b can then be designed as a lid which forms the bottom or lower end 36 of the piston 30.
    In FIG. 5, in the stable, the upper part 30a of the piston 30 is formed as a lid which forms the top of the piston or the upper end 32. As can be seen from FIG. 5, the parts 30a and 30b may be joined by a rolled seam connection 30e which also tightly holds the thickened inner spirit 12 'of the roller bellows 12 to the piston 30.
    The above detailed description is primarily intended to facilitate the understanding and any unnecessary limitations of the invention should not be construed as such. The modifications which become apparent to one skilled in the art upon review of the specification may be practiced without departing from the spirit of the invention or the scope of the appended claims. 6
    权利要求:
    Claims (9)
    [1]
    An air spring (10) for a vehicle (50), comprising a roller bellows (12) with a pair of ends (16, 36) and defining an air spring chamber (20), one of the ends (36) being formed on a piston (30) ) with a circumferential surface (34) for supporting a rolling lobe (14) of the bellows as the ends move towards and away from each other, characterized in that the piston (30) is designed as a pressure vessel separate from the air spring chamber (20) for a compressed air system (70). ) in the vehicle (50).
    [2]
    Air spring according to claim 1, wherein the piston (30) has an inlet and outlet opening (40) for receiving and delivering compressed air from resp. to the compressed air system (60).
    [3]
    Air spring according to claim 2, wherein the inlet and outlet opening (40) is arranged in the end (36) of the air spring (10) formed on the piston.
    [4]
    An air spring according to any one of the preceding claims, wherein the piston (30) is formed by a pair of joined parts (30a, 30b).
    [5]
    Air spring according to claim 4, wherein the parts (30a, 30b) are joined together by a circumferential weld (30c).
    [6]
    Air spring according to claim 4 or 5, wherein the parts (30a, 30b) are joined together by a flange joint (30d, 30e).
    [7]
    An air spring according to claim 6, wherein the flange joint (30e) also connects a spirit (12 ') of the bellows (12) to the piston (30).
    [8]
    A piston (30) according to any one of the preceding claims for an air spring (10) according to any one of the preceding claims.
    [9]
    Vehicle (40) provided with a number of air springs (40) according to any one of the preceding claims.
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    同族专利:
    公开号 | 公开日
    BR112013012574A2|2018-05-08|
    WO2012074458A1|2012-06-07|
    SE537362C2|2015-04-14|
    EP2646707A1|2013-10-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1057469B|1956-09-19|1959-05-14|Daimler Benz Ag|Air suspension, especially for heavy-duty vehicles or the like.|
    DE1505423A1|1964-07-14|1969-06-19|Forss Brdr Ab|Vehicle axle for wheels with brakes, which are operated by servo motors driven by compressed air|
    IT1178992B|1984-06-27|1987-09-16|Fiat Auto Spa|VARIABLE STRENGTH PNEUMATIC SPRING PARTICULARLY FOR VEHICLE SUSPENSIONS|
    SE513416C2|1997-12-18|2000-09-11|Volvo Lastvagnar Ab|Procedure for raising and lowering a vehicle chassis|
    US6386524B1|2000-02-15|2002-05-14|Bfs Diversified Products, Llc|Pedestal mounted full reservoir air spring piston|
    DE202009001029U1|2008-11-21|2009-11-26|Humbaur Gmbh|Trailer with compressed air tank|CN102900800A|2012-10-15|2013-01-30|西南交通大学|Hydraulic shock absorber with butterfly-shaped annular springs|
    DE102016207873A1|2016-05-09|2017-11-09|Ford Global Technologies, Llc|Air suspension unit for a motor vehicle|
    JP6941046B2|2017-12-20|2021-09-29|株式会社荏原製作所|Polishing head and polishing equipment|
    CN112103237A|2019-06-18|2020-12-18|株式会社荏原制作所|Substrate holding apparatus and substrate processing apparatus|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1051252A|SE537362C2|2010-11-29|2010-11-29|Air spring, piston and vehicle|SE1051252A| SE537362C2|2010-11-29|2010-11-29|Air spring, piston and vehicle|
    EP11845399.2A| EP2646707A1|2010-11-29|2011-11-23|Air spring, piston and vehicle|
    BR112013012574A| BR112013012574A2|2010-11-29|2011-11-23|air spring, piston and vehicle|
    PCT/SE2011/051410| WO2012074458A1|2010-11-29|2011-11-23|Air spring, piston and vehicle|
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