Classifications

• • 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
  • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
  • B60G17/048—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics with the regulating means inside the fluid springs
  • B60G17/0485—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics with the regulating means inside the fluid springs the springs being pneumatic springs with a flexible wall, e.g. with levelling valves
• • 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
  • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
  • B60G17/052—Pneumatic spring characteristics
  • B60G17/0523—Regulating distributors or valves for pneumatic springs
  • B60G17/0525—Height adjusting or levelling valves
• • 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
  • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
  • B60G17/052—Pneumatic spring characteristics
  • B60G17/0523—Regulating distributors or valves for pneumatic springs
  • B60G17/0528—Pressure regulating or air filling valves
• • 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
  • F16F9/32—Details
  • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
  • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
  • F16F9/5123—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity responsive to the static or steady-state load on the damper
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
  • B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
  • B60G15/12—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper
• • 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
  • B60G2202/30—Spring/Damper and/or actuator Units
  • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
  • B60G2202/314—The spring being a pneumatic spring
• • 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
  • B60G2204/42—Joints with cam surfaces
• • 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
  • B60G2204/423—Rails, tubes, or the like, for guiding the movement of suspension elements
• • 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
  • B60G2204/423—Rails, tubes, or the like, for guiding the movement of suspension elements
  • B60G2204/4232—Sliding mounts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
  • B60G2400/25—Stroke; Height; Displacement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
  • B60G2400/25—Stroke; Height; Displacement
  • B60G2400/252—Stroke; Height; Displacement vertical
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2500/00—Indexing codes relating to the regulated action or device
  • B60G2500/20—Spring action or springs
  • B60G2500/202—Height or leveling valve for air-springs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2500/00—Indexing codes relating to the regulated action or device
  • B60G2500/20—Spring action or springs
  • B60G2500/202—Height or leveling valve for air-springs
  • B60G2500/2021—Arrangement of valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2500/00—Indexing codes relating to the regulated action or device
  • B60G2500/20—Spring action or springs
  • B60G2500/202—Height or leveling valve for air-springs
  • B60G2500/2022—Height or leveling valve for air-springs with valve seat actuation for selectively adjusting neutral height
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2500/00—Indexing codes relating to the regulated action or device
  • B60G2500/20—Spring action or springs
  • B60G2500/204—Pressure regulating valves for air-springs
  • B60G2500/2042—Air filling valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2500/00—Indexing codes relating to the regulated action or device
  • B60G2500/20—Spring action or springs
  • B60G2500/204—Pressure regulating valves for air-springs
  • B60G2500/2044—Air exhausting valves
• • 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
  • F16F9/32—Details
  • F16F9/34—Special valve constructions; Shape or construction of throttling passages
  • F16F9/342—Throttling passages operating with metering pins

Definitions

• the invention relates to an air spring assembly having an integrated control valve arrangement for pressurizing a formed between an outer tube, a roll tube and these components connecting air spring bellows spring pressure chamber, wherein the control valve assembly consists of a single vent valve and a single vent valve by integrated mechanical actuation means in accordance with the Beerfederhub ein for loading or bleeding the spring pressure chamber can be actuated.
• the field of application of the invention extends primarily to the vehicle technology.
• vibration dampers which comprise a mostly hydraulic damping element and a hereby cooperating air spring arrangement.
• the damping element usually has a container tube which is connected to a roll tube of the air spring, wherein the roll tube is connected via a bellows acting as a bellows with a concentric and relative to the roll tube axially movably arranged outer tube.
• the bellows, the roll-off tube and the outer tube define a spring pressure chamber that is under spring pressure.
• vibration dampers for example, the suspension of a cab on a chassis of a commercial vehicle is equipped to those from the road on the wheel
• control valve arrangement in this prior art consists of two individual valves for respectively ventilating and venting the spring pressure chamber. Both individual valves are arranged on the part of the roll-off tube and are actuated via a spring-biased mechanical actuating means, which is mounted on the part of the outer tube.
• the spring-biased mechanical actuating means acts against a likewise spring-biased actuating tappet of the two individual valves.
• this technical solution may result in an indefinite switching point for the valve actuation.
• the actuating tappets in this prior art are of different lengths and are actuated in the same direction, there may be undesirable overlaps of switching states.
• EP 1 327 538 A2 discloses an air spring arrangement with likewise integrated control valve arrangement for ventilation or venting of the spring pressure chamber.
• the actuation of the tax Here tilan extract takes place via a likewise disposed within the air spring control, which acts on one of the two relatively movable air spring assemblies Abrollrohr or outer tube.
• the control element has an effective length, which is shorter than the stroke length of the air spring and is biased by a spring against one of the mutually movable air spring assemblies.
• the control is floating relative to two air spring assemblies, in which a second spring, the force direction is effective against the aforementioned first spring, the position of the control codetermines. Due to the floating bearing, undefined switching states can also occur over the lifetime. This means that a ventilation or venting of the spring pressure chamber is not reliably triggered as desired at a defined stroke position of the air spring assembly.
• DE 100 03 054 AI discloses another air spring arrangement with integrated control valve arrangement and mechanical actuating means for actuating the control valve arrangement.
• the actuating means has a guideway and engages one of the two relatively movable air spring assemblies.
• the control valve assembly is designed as a rotary slide valve, wherein the guide rail of the actuating means is designed to be shorter than the stroke length of the air spring and the actuating means in releasable operative connection with the supporting this air spring assembly.
• vent valve of the control valve assembly is disposed opposite the vent valve with actuating tappets facing each other, wherein the mechanical actuating means acting thereon comprise a switching rod mounted on one side of the outer tube or Abrollrohr whose opposite and each one of the actuating tappets associated slideways act on the actuating tappet for stroke-dependent valve actuation.
• the advantage of the solution according to the invention is, in particular, that due to the springless coupling of the mechanical actuating means to the control valve arrangement, related manufacturing tolerances and fatigue phenomena have no influence on the switching states of the control valve arrangement. Over the entire Beerfederhubweg the switching position of the ventilation valve and the vent valve and in particular the relative switching position is always defined to each other, so that in particular can not come to fürströmlexicen during a switching position change.
• the solution according to the invention forms a kind of forced operation of the valve actuation, which is achieved with a low component technical effort.
• the actuating tappets of ventilation valve and venting valve are arranged at an obtuse angle to each other in order to integrate the valve arrangement in the region of the roll-off tube.
• the obtuse angle lies horizontally with respect to the longitudinal axis of the air spring arrangement within the cylindrical roll-off tube and thus utilizes a hollow-cylindrical segment-shaped space available for space-saving accommodation of the control valve arrangement. This can also be integrated into a correspondingly thick wall of the cylindrical Abrollrohres.
• the vent valve and the vent valve are designed as spring-return monostable 2/2-way slide valves.
• the return spring serves to press the actuating plunger against the associated slide of the shift rod.
• the one-sided on the outer tube or roll tube hinged mounted shift rod is guided according to another measure improving the invention on the opposite assembly, namely the roll tube or outer tube, along the longitudinal movement. This can be done, for example, such that the switching rod protrudes into a corresponding recess while maintaining a slight clearance fit.
• the clearance is to be dimensioned so that on the one hand, the axial movement is not hindered by the shift rod and on the other hand, the smallest possible clearance clearance is present to ensure the precision of the valve actuation.
• each associated slideways of the shift rod is proposed that this an upper, the ventilation valve zugeordne- the same is provided in the region of a lower stroke position of the air spring arrangement, whereas the vent valve remains unactuated by a web section opposite this web section. This causes a refilling of the spring pressure chamber with compressed air, if the spring load increases and / or not enough compressed air for effective air suspension is available.
• the slideways of the shift rod may include a lower track portion associated with the vent valve for actuating the vent valve in the region of an upper air spring lift position and a track portion opposite thereto to maintain the closed position of the vent valve.
• compressed air can escape from the spring pressure chamber, if the spring load is reduced and insofar as there is a too high air pressure within the spring pressure chamber for the desired degree of air suspension.
• the venting valve and the vent valve is held in the closed position in the region of a central track portion of the slide tracks of the shift rod. This is done during normal air spring operation where neither ventilation nor venting of the spring pressure chamber is required because the desired suspension characteristics are present.
• a rolling element is arranged between the sliding track of the switching rod and the end face of the associated actuating tappet.
• This rolling element may for example be a rolling bearing element in the form of a cylinder or ball element made of steel.
• FIG. 1 shows a schematic representation of an air spring arrangement with integrated control valve arrangement
• FIG. 2 shows a schematic control valve arrangement in an upper air spring lift position
• Figure 3 is a schematic representation of the air spring assembly in a lower Luftfederhub too.
• Figure 4 is a schematic representation of the air spring assembly in a middle Heilfederhub too.
• the air spring assembly consists essentially of an outer tube 1 with upper mounting lug 2 for attachment to a cab of a commercial vehicle not shown and a roll tube 3 with lower mounting lug 4 for attachment to the air spring assembly on a chassis of the commercial vehicle.
• the outer tube 1 is connected to the roll-off tube 3 by an air spring bellows 5, so that a spring-pressure chamber 6 is formed between the outer tube 1, the roll-off tube 3 and the air spring bellows 5.
• the air spring cooperates with an integrated hydraulic shock absorber 7, which serves to dampen the sprung mass.
• the spring pressure chamber 6 of the air spring assembly can be acted upon via an integrated control valve assembly consisting of a single vent valve 8 and a single vent valve 9, depending on the load with compressed air.
• the vent valve 8 and the vent valve 9 are controlled by also integrated mechanical actuation means in the form of a part of the outer tube 1 mounted shift rod 10 in accordance with the Heilfederhub too.
• the vent valve 9 is disposed opposite the vent valve 8 with facing actuating plungers 8a and 9a.
• the switching rod 10 which can be moved at right angles thereto along the air spring stroke has two slideways 1 la and 1 lb formed opposite thereto. While the slide I Ia is associated with the vent valve 8 and cooperates with the actuating plunger 8a, the opposite slide I Ib acts with the vent valve 9 via the actuating plunger 9a together.
• the slides I Ia and 1 Ib of the shift rod 10 extend over the entire Beerfederhubweg to always ensure a defined switching position of the control valve assembly.
• the one-sided attached to the outer tube 1 via a ball joint assembly 12 shift rod 10 is guided by the Abrollrohres 3 via a guide channel 13 along the longitudinal movement.
• the vent valve 8 and the vent valve 9 are formed as spring-return monostable 2/2-way slide valves.
• the respective integrated return springs 8c and 9c act on the associated actuating tappet 8a and 9a, respectively, which comes into abutment via a roller bearing element 8b or 9b on the associated slide track la or lb of the shift rod 10.
• a lower track section 1 lb 'actuates the venting valve 9 in the region of an upper air spring lift position.
• the opposite path section I Ia 'does not actuate the vent valve 8, so that, as a result, a venting of the spring pressure chamber is brought about.
• Shift rod 10 corresponds to a mean Luftfederhub too in which neither a vent nor aeration of the spring pressure chamber is performed.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Fluid-Damping Devices (AREA)
• Vehicle Body Suspensions (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=52469813

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (2)

Citations (9)

Family Cites Families (6)

• 2014
  • 2014-02-03 DE DE102014101277.1A patent/DE102014101277A1/de not_active Ceased
• 2015
  • 2015-02-02 EP EP15704242.5A patent/EP3102446B1/de not_active Not-in-force
  • 2015-02-02 WO PCT/EP2015/052057 patent/WO2015114133A1/de not_active Ceased
  • 2015-02-02 RU RU2016135616A patent/RU2636986C1/ru active
  • 2015-02-02 BR BR112016017297-3A patent/BR112016017297B1/pt not_active IP Right Cessation
  • 2015-02-02 CN CN201580006996.XA patent/CN105960343B/zh not_active Expired - Fee Related

Patent Citations (9)

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