EP1404977B1 - Device and method for the pneumatic control and regulation of hydraulic fluid flows - Google Patents

Device and method for the pneumatic control and regulation of hydraulic fluid flows Download PDF

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Publication number
EP1404977B1
EP1404977B1 EP02740329A EP02740329A EP1404977B1 EP 1404977 B1 EP1404977 B1 EP 1404977B1 EP 02740329 A EP02740329 A EP 02740329A EP 02740329 A EP02740329 A EP 02740329A EP 1404977 B1 EP1404977 B1 EP 1404977B1
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EP
European Patent Office
Prior art keywords
pneumatic control
passage
control device
working space
valve piston
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.)
Expired - Lifetime
Application number
EP02740329A
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German (de)
French (fr)
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EP1404977A1 (en
Inventor
Bertram Bauer
Daniel Konrad
Jens Schrader
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1404977A1 publication Critical patent/EP1404977A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/15—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor with special provision for automatic return
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y10T137/2554—Reversing or 4-way valve systems

Definitions

  • the invention is based on a device for controlling and control of pressure medium flows according to the preamble of claim 1 and of a method for controlling and regulating Pressure medium flows according to claim 16.
  • Pneumatic control and regulation circuits are in one Variety of technical applications used. exemplary here is the European patent EP 0 812 743 B1 referred to a fluid-powered wiper motor describes.
  • the windscreen wiper motor of EP 0 812 743 B1 has a double-acting cylinder in which two piston surfaces be subjected to pressure medium against each other.
  • One Um Kunststoffschieber feeds depending on the position of the drive Pressure medium in the area of the outer end positions of Piston surfaces and switches in the area of the inner End positions of the piston surfaces for venting.
  • the two Piston or piston surfaces are over a coupled mechanical connection and with a rack Mistake.
  • the rack accesses one A rotary drive, so that the linear movement between the both outer end positions of the piston surfaces over the Drehabtrieb in a rotary motion for wiper operation is transferred.
  • Um Kunststoffschieber For reversal, that is, for reversing the rotational movement, as soon as one of the end positions is reached, a so-called Um Kunststoffschieber used. This is a Valve in which the valve slide is analogous to the double Acting working cylinder also operated double acting becomes. The Um Kunststoffschieber leads, based on the movement of the double-acting cylinder, in opposition Movements out.
  • the combined, pneumatic and electrical circuit allows it by the variety of Valves, defined pressures in the individual air chambers of the To build a seat and so, both the comfort of the seat too increase, as well as longitudinal or lateral Acceleration of the vehicle.
  • the device of US 4,655,505 permits the pressure in each individual air chamber in time to vary continuously, so that optimized Pressure distribution is adjustable or the driver by an oscillating change of pressure conditions in the air chambers experience a massage effect.
  • the inventive device with the features of Claim 1 and also the inventive The method according to claim 16 has the advantage over that on electrical or electronic components almost can be completely dispensed with.
  • the inventive pneumatic circuit for controlling the Pressure medium flows requires no electrically controlled Valves, no pressure sensors and neither mathematically controlled control device. Only a compressor or the pump for providing the Pressure medium may possibly be electrically driven Pump be formed.
  • connecting channels in the movable slide element can be easily and elegant way the particular connection between the an input channel, the respective output channel and the Make the second output channel and the vent channel.
  • the slider element thus acts as an adjustable. Switch, which is the assignment of the total of four channels Device takes over each other.
  • an adjustable throttle which reduces the flow of the Pressure medium in a parallel to the respective output channel arranged working chamber controls, can be, for example in a simple way a delay element for the realize circuit according to the invention, so that the Time constant of alternating motion flexible can be adjusted. Only when in the workroom before defined pressure is applied, a sufficiently large restoring force on the valve piston and the so exerted connected slide element. The slider element is then automatically moved so that the, alternative Assignment of channels is set. So it's all about the Size of the workrooms and the setting of the chokes possible the time delay within the pneumatic To realize circuit without electronic components.
  • the two output channels assigned working spaces of the device according to the invention Part of the valve chamber in which the valve piston moves.
  • the work spaces are for example towards the valve chamber over a membrane, each near one of its Ends connected to the valve piston, completed.
  • These elastic membranes which are advantageously made of a Elastomer, such as rubber or silicone can easily transfer the in the Working chamber applied pressure on the valve piston.
  • a Elastomer such as rubber or silicone
  • the Valve piston can so by the relative pressure difference of Working chambers to each other in an oscillating motion be offset, which controls the pressure medium Actuates slide element accordingly.
  • the claimed control and regulating device a can build desired pressure, the valve piston is not freely arranged in the valve chamber, but by secured a counter device.
  • This counterpart facility acts by the pressure difference in the working chambers generated force on the valve piston.
  • the Konticher for example in the form of a Rastfeder can be realized, thus also allows the internal time constant of the pneumatic according to the invention Control and regulating device in the desired manner adjust.
  • Device allows the force that the counter device on the valve piston exercises manually or optionally set automatically so that the time constant of the oscillating movement of the valve piston in a simple way for example, can be changed by the driver himself.
  • An advantageous application undergoes the inventive Control and regulating device, if on the one input channel a small compressor for the pressure medium, such as a vane compressor or a diaphragm pump is connected, and the two output channels each with a flexible air chamber are connected.
  • a small compressor for the pressure medium such as a vane compressor or a diaphragm pump is connected, and the two output channels each with a flexible air chamber are connected.
  • this Design provides the inventive control and Regulating device that mutually each one of Inflated air chambers and the other air chamber at the same time is vented, making it an alternating motion the air chambers comes, if the inventive Device only with a constant pressure medium flow is charged.
  • the time constant of this reciprocal movement is alone by the passive means of the device according to the invention determined and can be in a simple and advantageous way vary by various throttles and counter elements and the adapt to specific requirements.
  • the claimed invention realizes this Massage system with a purely pneumatic control and Control circuit.
  • the inventive method allows in simple and Advantageously, the control and regulation of Pressure medium flows solely by pneumatic means.
  • the claimed method enables the easy realization of adjustable time constant and adjusted delays for the alternating movements solely by a pneumatic control of Pressure medium flows.
  • pneumatic device 10 shows Slider element 12, which has an input channel 14 of the Device with a first output channel 16 and a second output channel 18 with a vent passage 20th combines.
  • the vent passage 20 does not necessarily need at atmospheric pressure. Rather, one is in itself closed circuit conceivable for the device.
  • the input channel 14 is preceded by an adjustable Throttle 15.
  • the output channel 16 is connected via connecting means 22 connected to a recipient 24.
  • the connecting means 22 has, among other things, a Dossel 26, with the Flow through the connecting means 22 in the desired Way can be set. From the output channel 16 branches another connecting means 28 from that via a Delay member 29, which in the present Embodiment is realized by a throttle 30, too a serving as a first working space 32 reservoir 34th leads, which via a check valve 35 and the Connecting means 28 can be emptied.
  • the reservoir 32 In turn, printing technology via a device 37 with the Slider element 12 coupled.
  • the second output channel 18 is on the one over Connecting means 38 and a throttle 40 with a second Recipients 42 connected and on the other hand Connecting means 44 and a throttle 46 to a second Working space 48 serving reservoir 50 coupled.
  • the Feed to the reservoir 50 also has one Delay member 31 and a check valve 47 for the Vent on.
  • the reservoir 50 like the reservoir 34, however, on the opposite side via a device 39 coupled to the slider element 12.
  • the slider element 12 has continuous inside Channels 52, the respective connection between the an input channel 14, the two output channels sixteenth or 18 and the venting channel 20 in Dependence on the position of the slide element 12 convey.
  • the mobility of the slide element 12 is by a counter device 54, which in the figure 1 is shown schematically as an elastic spring 64, regulated.
  • the input channel 14 of the device according to the invention 10 as shown in the figure 1, with a Pressure medium, such as air applied, so the pressure medium passes through a channel 56 and the throttle 26 in the recipient 24, for example, as a elastic air cushion 58 is formed ..
  • the air cushion 58 will fill up with the pressure medium and accordingly be inflated.
  • the recipient 42 is at this time via a channel 60 with the vent passage 20 of the Device connected, so in this example Atmosphere printing prevails.
  • the air bag 58 As the air bag 58 is inflated, becomes a part the pressure medium flow through the connecting means 28 and a correspondingly set throttle 30 the working space 32nd fed.
  • the exact setting of the throttle 30 determines while the time that is necessary to the work space 32 too to fill.
  • the working space 32 is for example via a elastic membrane 62 connected to the slider element 12.
  • the pressure in the working space 32 rises, and the Membrane 62 expands, the force on the slider element 12 enlarged.
  • the slider element 12 is over the Containers 54, which in the figure 1 in the form of two elastic springs 64 is indicated, locked. exceeds on the slider element 12 by the pressure in Working space 32 applied force the latching force of the Slider element 12, so this is moved and takes a position, as shown in Figure 2.
  • a flexible airbag 68 may be via a channel 70 is connected to the one input channel 14, and is of the filled there pressure medium filled.
  • a Part of this pressure medium via the connecting means 44 and the throttle 46 is supplied to the second working space 48.
  • the pressure in the second working space now increases according to the Adjustment of the throttle 46, while the recipient 42 is inflated, as already above in an analogous manner for the first working space has been described.
  • a membrane 72nd can be, is thus a force on the slider element 12th exercised. Is this force sufficiently large to the cogging force the slider element 12 due to the counter device 54 to overcome, so has a sufficient in the workspace 48 constructed high pressure, the slide element 12 is again in his - shown in Figure 1 - first position pushed back so that the associated air cushion 68 again via the channel 60 of the slide element 12th is vented.
  • the involved air cushion can be with one on this Invention based system in the seat of a vehicle of the Improve seating comfort and relieve the spine Achieve through the self-adjusting massage effect.
  • the Oscillation period of this movement can over the Setting the relative throttle sizes, the size of the involved volumes and last but not least about the promoted pressure medium flow can be adjusted.
  • About the direct adjustment of the strength of the counter device is it for example, the user himself easily the frequency to adapt to the movement individually.
  • Small compressor such as a vane pump or a diaphragm pump can be used.
  • Such Device is shown in FIG.
  • the one by one Motor 76, preferably in the form of an electric motor is used, driven pump 78 acts on the Device 10 according to the invention via the adjustable Throttle 15 and the inlet channel 14 with the pressure medium, the preferably air is, but quite another Mixture or gas can be.
  • a volume 82 the Input channel 14 is connected upstream, monitor. This will be the motor 78 driving the pump 78 via a pressure sensor 84, in the supply line 86 and an associated switch controlled.
  • the pump 78 and the associated motor 76 driving it can in the immediate vicinity of the pneumatic device 10th be arranged or via appropriate Connecting means spatially separated and so if necessary be decoupled acoustically from the vehicle seat.
  • Figure 4 shows a cross section through a Embodiment of the invention, pneumatic Contraption.
  • the pressure medium passes through the inlet channel 14 and a Channel plate 88 to the slider element 12.
  • the slider element 12 is fixedly connected to a valve piston 90
  • the Valve piston 90 in turn is in a valve chamber 92nd arranged.
  • the slider element 12 can below, the means on the input channel or the Output channels facing away from the channel plate 88 relative to be moved to this, so that optionally different Openings in the channel plate 88 with the channels 52 of Slider element 12 come to cover.
  • the counter device 54 can for example, by a leaf spring or other, the Professional common Konter wornen be realized.
  • the system pressure of the counter device can via a Actuation mechanism 96 can be varied.
  • the differential pressure of the working spaces 48 and 32 causes a resulting force on the flexible membranes 62 and 72, so that the valve piston connected to the membranes 90th is moved against the force of the detent spring 94 and the Slider element 12 in the second end position of the device 10 is moved.
  • the device according to the invention is not for use for reciprocal ventilation of air cushions in Limited vehicle seats.
  • pneumatic control and regulating device are in principle all intermittent or oscillating movements of Piston and other control elements conceivable.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Massaging Devices (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Diaphragms And Bellows (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Vorrichtung zur Steuerung und Regelung von Druckmittelströmen gemäß dem Oberbegriff des Anspruchs 1 beziehungsweise von von einem Verfahren zur Steuerung und Regelung von Druckmittelströmen gemäß dem Anspruch 16.The invention is based on a device for controlling and control of pressure medium flows according to the preamble of claim 1 and of a method for controlling and regulating Pressure medium flows according to claim 16.

Eine solche Vorrichtung ist aus dem Dokument US 3 167 083 bekannt.Such a device is known from document US 3 167 083.

Pneumatische Steuer- und Regelschaltungen werden in einer Vielzahl von technischen Anwendungen benutzt. Beispielhaft sei hier auf die Europäische Patentschrift EP 0 812 743 B1 verwiesen, die einen druckmittelbetriebenen Scheibenwischer-Motor beschreibt.Pneumatic control and regulation circuits are in one Variety of technical applications used. exemplary here is the European patent EP 0 812 743 B1 referred to a fluid-powered wiper motor describes.

Der Scheibenwischer-Motor der EP 0 812 743 B1 besitzt einen doppelt wirkenden Arbeitszylinder in dem zwei Kolbenflächen gegeneinander druckmittelbeaufschlagt werden. Ein Umsteuerschieber speist je nach Stellung des Antriebs das Druckmittel im Bereich der äusseren Endlagen der Kolbenflächen ein und schaltet im Bereich der inneren Endlagen der Kolbenflächen zur Entlüftung durch. Die beiden Kolben beziehungsweise Kolbenflächen sind dabei über eine mechanische Verbindung gekoppelt und mit einer Zahnstange versehen. Die Zahnstange wiederum greift auf einen Drehabtrieb ein, so dass die lineare Bewegung zwischen den beiden äusseren Endlagen der Kolbenflächen über den Drehabtrieb in eine Drehbewegung zur Wischerbetätigung überführt wird.The windscreen wiper motor of EP 0 812 743 B1 has a double-acting cylinder in which two piston surfaces be subjected to pressure medium against each other. One Umsteuerschieber feeds depending on the position of the drive Pressure medium in the area of the outer end positions of Piston surfaces and switches in the area of the inner End positions of the piston surfaces for venting. The two Piston or piston surfaces are over a coupled mechanical connection and with a rack Mistake. The rack in turn accesses one A rotary drive, so that the linear movement between the both outer end positions of the piston surfaces over the Drehabtrieb in a rotary motion for wiper operation is transferred.

Zur Umsteuerung, das heisst zur Umkehrung der Drehbewegung, sobald eine der Endlagen erreicht ist, wird ein sogenannter Umsteuerschieber verwendet. Hierbei handelt es sich um ein Ventil, bei welchem der Ventilschieber analog zum doppelt wirkenden Arbeitszylinder ebenfalls doppelt wirkend betätigt wird. Der Umsteuerschieber führt, bezogen auf die Bewegung des doppelt wirkenden Arbeitszylinders, dazu entgegengesetzt Bewegungen aus. For reversal, that is, for reversing the rotational movement, as soon as one of the end positions is reached, a so-called Umsteuerschieber used. This is a Valve in which the valve slide is analogous to the double Acting working cylinder also operated double acting becomes. The Umsteuerschieber leads, based on the movement of the double-acting cylinder, in opposition Movements out.

Aus der US 4,655,505 ist ein pneumatisch kontrollierter Sitz für ein Fahrzeug bekannt, der es ermöglicht, die Druckverteilung des Sitzes für den Fahrer zu variieren. Diese Vorrichtung umfasst eine Vielzahl von in den Sitz des Fahrzeuges integrierten, flexiblen Luftkammern, die über eine entsprechende Anzahl von Verbindungsmitteln mit einer Luftpumpe und einem Drucksensor verbunden sind. Jedes Verbindungsmittel weist ein Ventil auf, das über elektronische Kontrollmittel, die das Signal des Drucksensors auswerten, angesteuert werden kann.From US 4,655,505 is a pneumatically controlled seat known for a vehicle that allows the Pressure distribution of the seat for the driver to vary. This device includes a variety of in the seat of the Vehicle integrated, flexible air chambers that over a corresponding number of connection means with a Air pump and a pressure sensor are connected. each Connecting means has a valve over electronic means of control that transmit the signal of Evaluate pressure sensor, can be controlled.

Die kombinierte, pneumatische und elektrische Schaltung dieser Vorrichtung gestattet es durch die Vielzahl der Ventile, definierte Drücke in den einzelnen Luftkammern des Sitzes aufzubauen und so, sowohl den Komfort des Sitzes zu erhöhen, als auch longitudinalen oder lateralen Beschleunigungen des Fahrzeugs Rechnung zu tragen.The combined, pneumatic and electrical circuit This device allows it by the variety of Valves, defined pressures in the individual air chambers of the To build a seat and so, both the comfort of the seat too increase, as well as longitudinal or lateral Acceleration of the vehicle.

Im Besonderen gestattet es die Vorrichtung der US 4,655,505 den Druck in jeder einzelnen Luftkammer zeitlich kontinuierlich zu variieren, so dass eine optimierte Druckverteilung einstellbar ist beziehungsweise der Fahrer durch eine oszillierende Änderung der Druckverhältnisse in den Luftkammern einen Massage-Effekt erfährt.In particular, the device of US 4,655,505 permits the pressure in each individual air chamber in time to vary continuously, so that optimized Pressure distribution is adjustable or the driver by an oscillating change of pressure conditions in the air chambers experience a massage effect.

Zur Erzielung dieser Variation in den Druckverhältnissen der einzelnen Luftkammern des Sitzes der US 4,655,505 ist eine aufwendige elektrische Kontroll- und Steuereinheit mit entsprechender Elektronik und zumindest ein Drucksensor und eine zentrale Recheneinheit von Nöten.To achieve this variation in the pressure ratios of single air chambers of the seat of US 4,655,505 is a elaborate electrical control and control unit with corresponding electronics and at least one pressure sensor and a central processing unit of needs.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Vorrichtung mit den Merkmalen des Anspruchs 1 beziehungsweise auch das erfindungsgemäße Verfahren nach Anspruch 16 hat demgegenüber den Vorteil, dass auf elektrische oder elektronische Komponenten fast vollständig verzichtet werden kann. The inventive device with the features of Claim 1 and also the inventive The method according to claim 16 has the advantage over that on electrical or electronic components almost can be completely dispensed with.

Die erfindungsgemäße pneumatische Schaltung zur Regelung der Druckmittelströme bedarf keiner elektrisch angesteuerten Ventile, keiner Drucksensoren und auch keiner rechnerisch gesteuerten Kontrolleinrichtung. Lediglich ein Kompressor beziehungsweise die Pumpe zur Bereitstellung des Druckmittels kann eventuell als elektrisch angetriebene Pumpe ausgebildet sein.The inventive pneumatic circuit for controlling the Pressure medium flows requires no electrically controlled Valves, no pressure sensors and neither mathematically controlled control device. Only a compressor or the pump for providing the Pressure medium may possibly be electrically driven Pump be formed.

Durch den rein pneumatisch getriebenen Ventilkolben der erfindungsgemäßen Steuer- und Regeleinrichtung wird ein Schieberelement der Art bewegt, dass alternierend jeweils ein Ausgangskanal der pneumatischen Vorrichtung mit dem einen Eingangskanal und der andere Ausgangskanal gleichzeitig mit dem Entlüftungskanal der Vorrichtung verschaltet ist.Due to the purely pneumatically driven valve piston of Control and regulating device according to the invention is a Slider element of the type that moves alternately respectively an output channel of the pneumatic device with the one input channel and the other output channel simultaneously with the venting channel of the device is interconnected.

Auf diese Weise ist das Füllen einer ersten Kammer mit dem Druckmittel und das gleichzeitige Entleeren einer zweiten Kammer wechselseitig möglich, ohne die Druckmittelzufuhr zu den Kammern über elektromagnetische Ventile steuern zu müssen.In this way, the filling of a first chamber with the Pressure medium and the simultaneous emptying of a second Chamber mutually possible without the supply of pressure medium control the chambers via electromagnetic valves have to.

Vorteilhafte Ausführungen der erfindungsgemäßen Vorrichtung ergeben sich aus den in den Unteransprüchen aufgezeigten Maßnahmen.Advantageous embodiments of the device according to the invention emerge from the indicated in the subclaims Activities.

Durch die Ausbildung von Verbindungskanälen in dem beweglichen Schieberelement lässt sich auf einfache und elegante Art und Weise die jeweilige Verbindung zwischen dem einen Eingangskanal, dem jeweiligen Ausgangskanal sowie dem zweiten Ausgangskanal und dem Entlüftungskanal herstellen. Das Schieberelement wirkt somit wie eine verstellbare. Weiche, die die Zuordnung der insgesamt vier Kanäle der Vorrichtung zueinander übernimmt.Through the formation of connecting channels in the movable slide element can be easily and elegant way the particular connection between the an input channel, the respective output channel and the Make the second output channel and the vent channel. The slider element thus acts as an adjustable. Switch, which is the assignment of the total of four channels Device takes over each other.

Mit einer einstellbaren Drossel, die den Durchfluss des Druckmittels in eine parallel zum jeweiligen Ausgangskanal angeordnete Arbeitskammer regelt, lässt sich beispielsweise auf einfache Art ein Verzögerungsglied für die erfindungsgemäße Schaltung realisieren, so dass die Zeitkonstante der alternierenden Bewegung flexibel eingestellt werden kann. Erst, wenn im Arbeitsraum rin zuvor definierter Druck anliegt, wird eine genügend große rücktreibende Kraft auf den Ventilkolben und dem damit verbundenen Schieberelement ausgeübt. Das Schieberelement wird dann automatisch bewegt, so dass sich die, alternative Zuordnung der Kanäle einstellt. So ist es allein über die Größe der Arbeitsräume und die Einstellung der Drosseln möglich die Zeitverzögerung innerhalb der pneumatischen Schaltung ohne elektronische Bausteine zu realisieren.With an adjustable throttle, which reduces the flow of the Pressure medium in a parallel to the respective output channel arranged working chamber controls, can be, for example in a simple way a delay element for the realize circuit according to the invention, so that the Time constant of alternating motion flexible can be adjusted. Only when in the workroom before defined pressure is applied, a sufficiently large restoring force on the valve piston and the so exerted connected slide element. The slider element is then automatically moved so that the, alternative Assignment of channels is set. So it's all about the Size of the workrooms and the setting of the chokes possible the time delay within the pneumatic To realize circuit without electronic components.

In vorteilhafter Weise sind die den beiden Ausgangskanälen zugeordneten Arbeitsraume der erfindungsgemäßen Vorrichtung Teil der Ventilkammer, in der sich der Ventilkolben bewegt. Die Arbeitsräume sind zur Ventilkammer hin beispielsweise über eine Membran, die jeweils in der Nähe eines seiner Enden mit dem Ventilkolben verbunden ist, abgeschlossen. Diese elastischen Membranen, die vorteilhaft aus einem Elastomer, wie beispielsweise Kautschuk oder Silikon bestehen können, übertragen in einfacher Weise den in der Arbeitskammer anliegenden Druck auf den Ventilkolben. Der Ventilkolben kann so durch die relative Druckdifferenz der Arbeitskammern zueinander in eine oszillierende Bewegung versetzt werden, die das Druckmittel steuernde Schieberelement entsprechend antreibt.Advantageously, the two output channels assigned working spaces of the device according to the invention Part of the valve chamber in which the valve piston moves. The work spaces are for example towards the valve chamber over a membrane, each near one of its Ends connected to the valve piston, completed. These elastic membranes, which are advantageously made of a Elastomer, such as rubber or silicone can easily transfer the in the Working chamber applied pressure on the valve piston. Of the Valve piston can so by the relative pressure difference of Working chambers to each other in an oscillating motion be offset, which controls the pressure medium Actuates slide element accordingly.

Damit die beanspruchte Steuer- und Regelvorrichtung einen gewünschten Druck aufbauen kann, ist der Ventilkolben nicht freibeweglich in der Ventilkammer angeordnet, sondern durch eine Kontereinrichtung gesichert. Diese Kontereinrichtung wirkt der durch die Druckdifferenz in der Arbeitskammern erzeugten Kraft auf den Ventilkolben entgegen. Die Kontereinrichtung, die beispielsweise in Form einer Rastfeder realisiert sein kann, erlaubt somit ebenfalls die interne Zeitkonstante der erfindungsgemäßen pneumatischen Steuer- und Regeleinrichtung in gewünschter Weise einzustellen.Thus, the claimed control and regulating device a can build desired pressure, the valve piston is not freely arranged in the valve chamber, but by secured a counter device. This counterpart facility acts by the pressure difference in the working chambers generated force on the valve piston. The Kontichereinrichtung, for example in the form of a Rastfeder can be realized, thus also allows the internal time constant of the pneumatic according to the invention Control and regulating device in the desired manner adjust.

In einer vorteilhaften Ausführung der erfindungsgemäßen Vorrichtung lässt sich die Kraft, die die Kontereinrichtung auf den Ventilkolben ausübt manuell oder wahlweise auch automatisch einstellen, so dass die Zeitkonstante der oszillenden Bewegung des Ventilkolbens auf einfache Art beispielsweise vom Fahrer selbst geändert werden kann.In an advantageous embodiment of the invention Device allows the force that the counter device on the valve piston exercises manually or optionally set automatically so that the time constant of the oscillating movement of the valve piston in a simple way for example, can be changed by the driver himself.

Eine kostengünstige und vom Gewicht her leichte Ausgestaltung der erfindungsgemäßen Vorrichtung ergibt sich, wenn diese teilweise oder vollständig in Kunststoff ausgeführt wird. Andere Materialien sind aber ebenfalls für die beanspruchte Steuer- und Regelvorrichtung ohne Abstriche in ihrer Funktionsweise möglich.A low-cost and lightweight Embodiment of the device according to the invention, if this partially or completely in plastic is performed. But other materials are also for the claimed control and regulating device without compromise in their functioning possible.

Eine vorteilhafte Anwendung erfährt die erfindungsgemäße Steuer und Regeleinrichtung, wenn an dem einen Eingangskanal ein Kleinkompressor für des Druckmittel, wie beispielsweise ein Flügelzellenkompressor oder auch eine Membranpumpe angeschlossen ist, und die beiden Ausgangskanäle jeweils mit einer flexiblen Luftkammer verbunden sind. In dieser Ausgestaltung sorgt die erfindungsgemäße Steuer- und Regelvorrichtung dafür, dass wechselseitig jeweils eine der Luftkammern aufgepumpt und die andere Luftkammer zeitgleich entlüftet wird, so dass es zu einer alternierenden Bewegung der Luftkammern kommt, falls die erfindungsgemäße Vorrichtung nur mit einem konstanten Druckmittelstrom beaufschlagt wird.An advantageous application undergoes the inventive Control and regulating device, if on the one input channel a small compressor for the pressure medium, such as a vane compressor or a diaphragm pump is connected, and the two output channels each with a flexible air chamber are connected. In this Design provides the inventive control and Regulating device that mutually each one of Inflated air chambers and the other air chamber at the same time is vented, making it an alternating motion the air chambers comes, if the inventive Device only with a constant pressure medium flow is charged.

Die Zeitkonstante dieser wechselseitigen Bewegung ist allein durch die passiven Mittel der erfindungsgemäßen Vorrichtung bestimmt und lässt sich in einfacher und vorteilhafter Art durch diverse Drosseln und Konterelemente variieren und den jeweiligen Erfordernissen anpassen. The time constant of this reciprocal movement is alone by the passive means of the device according to the invention determined and can be in a simple and advantageous way vary by various throttles and counter elements and the adapt to specific requirements.

Wird die erfindungsgemäße Vorrichtung einschließlich einer das Druckmittel fördernden Pumpe und den ausgangsseitigen Luftkammern in den Sitz eines Fahrzeuges eingebaut, so lässt sich dadurch beispielsweise ein vorteilhafter Massage-Effekt für die Insassen des Fahrzeuges realisieren, ohne dass eine aufwendige elektronische Schaltung, wie bei den Vorrichtungen des Standes der Technik üblich, eingesetzt werden muß. Die beanspruchte Erfindung realisiert dieses Massagesystem mit einer rein pneumatischen Steuer- und Regelschaltung.Is the device according to the invention including a the pressure medium pump and the output side Air chambers installed in the seat of a vehicle, so lets This, for example, an advantageous massage effect realize for the occupants of the vehicle, without one elaborate electronic circuit, as with the Conventional devices commonly used must become. The claimed invention realizes this Massage system with a purely pneumatic control and Control circuit.

Somit ist es möglich, einen entsprechenden Fahrzeugsitz mit einem hohen Komfort unter Verwendung von lediglich passiven, pneumatischen Mitteln zu realisieren. Auf die Verwendung von elektronischen Schalt- und Regeleinrichtungen kann in vorteilhafter Weise verzichtet werden. Der Aufwand zur Realisierung solcher Massage-Systemen ist damit deutlich reduziert worden.Thus, it is possible to use a corresponding vehicle seat a high level of comfort using only passive, to realize pneumatic means. On the use of electronic switching and control devices can in be omitted advantageously. The effort to Realization of such massage systems is thus clear been reduced.

Das erfindungsgemäße Verfahren gestattet in einfacher und vorteilhafter Weise die Steuerung und Regelung von Druckmittelströmen allein mit pneumatischen Mitteln. Insbesondere ermöglicht das beanspruchte Verfahren die einfacheRealisierung vom einstellbaren Zeitkonstanten und angepassten Verzögerungen für die alternierenden Bewegungen allein durch eine pneumatische Regelung der Druckmittelströme.The inventive method allows in simple and Advantageously, the control and regulation of Pressure medium flows solely by pneumatic means. In particular, the claimed method enables the easy realization of adjustable time constant and adjusted delays for the alternating movements solely by a pneumatic control of Pressure medium flows.

Zeichnungdrawing

In der Zeichnung sind einige Ausführungsbeispiele der erfindungsgemäßen Vorrichtung dargestellt, die in der nachfolgenden Beschreibung näher erläutert werden soll.In the drawing, some embodiments of the Device according to the invention shown in the to be explained in more detail below description.

Es zeigen:Show it:

  • Figur 1 eine schematische Darstellung eines ersten Ausführungsbeispiels einer Schaltung der erfindungsgemäßen, pneumatischen Vorrichtung für eine erste Endstellung des Schieberelemente der Vorrichtung,Figure 1 is a schematic representation of a first Embodiment of a circuit of the invention, pneumatic device for a first end position of the Slide elements of the device,
  • Figur 2 eine schematische Darstellung des ersten Ausführungsbeispiels einer Schaltung der erfindungsgemäßen, pneumatischen Vorrichtung für eine zweite Endstellung des Schieberelemente der Vorrichtung,Figure 2 is a schematic representation of the first Embodiment of a circuit of the invention, pneumatic device for a second end position of the Slide elements of the device,
  • Figur 3 eine schematische Darstellung eines zweiten Ausführungsbeispiels einer Schaltung der erfindungsgemäßen, pneumatischen Vorrichtung für die erste Endstellung des Schieberelemente der Vorrichtung,Figure 3 is a schematic representation of a second Embodiment of a circuit of the invention, pneumatic device for the first end position of the Slide elements of the device,
  • Figur 4 einen Schnitt durch einen Teil eines Ausführungsbeispiel der erfindungsgemäßen Vorrichtung in einer ersten Endstellung des Schieberelementes
    und    Figure 4 shows a section through a part of an embodiment of the device according to the invention in a first end position of the slide element
    and
  • Figur 5 eine Aufsicht auf ein Ausführungsbeispiel einer Kanalplatte und darunter angeordnetem Schieberelement der erfindungsgemäßen Vorrichtung.Figure 5 is a plan view of an embodiment of a Channel plate and disposed below the slider element of Device according to the invention.

    • Beschreibung der AusführungsbeispieleDescription of the embodiments

    Die in der Figur 1 dargestellte schematische Schaltung der erfindungsgemäßen, pneumatischen Vorrichtung 10 zeigt ein Schieberelement 12, das einen Eingangskanal 14 der Vorrichtung mit einem ersten Ausgangskanal 16 und einen zweiten Ausgangskanal 18 mit einem Entlüftungskanal 20 verbindet. Der Entlüftungskanal 20 braucht nicht unbedingt an Atmosphärendruck anliegen. Vielmehr ist auch ein in sich geschlossener Kreislauf für die Vorrichtung denkbar.The schematic circuit shown in FIG According to the invention, pneumatic device 10 shows Slider element 12, which has an input channel 14 of the Device with a first output channel 16 and a second output channel 18 with a vent passage 20th combines. The vent passage 20 does not necessarily need at atmospheric pressure. Rather, one is in itself closed circuit conceivable for the device.

    Dem Eingangskanal 14 vorgeschaltet ist eine einstellbare Drossel 15. Der Ausgangskanal 16 ist über Verbindungsmittel 22 mit einem Rezipienten 24 verbunden. Das Verbindungsmittel 22 weist unter Anderem eine Dossel 26 auf, mit der der Durchfluss durch das Verbindungsmittel 22 in gewünschter Weise eingestellt werden kann. Vom Ausgangskanal 16 zweigt ein weiteres Verbindungsmittel 28 ab, das über ein Verzögerungsglied 29, das in dem vorliegenden Ausführungsbeispiel durch eine Drossel 30 realisiert ist, zu einem als ersten Arbeitsraum 32 dienenden Reservoir 34 führt, welches über ein Rückschlagventil 35 und das Verbindungsmittel 28 entleert werden kann. Das Reservoir 32 wiederum ist drucktechnisch über eine Vorrichtung 37 mit dem Schieberelement 12 gekoppelt.The input channel 14 is preceded by an adjustable Throttle 15. The output channel 16 is connected via connecting means 22 connected to a recipient 24. The connecting means 22 has, among other things, a Dossel 26, with the Flow through the connecting means 22 in the desired Way can be set. From the output channel 16 branches another connecting means 28 from that via a Delay member 29, which in the present Embodiment is realized by a throttle 30, too a serving as a first working space 32 reservoir 34th leads, which via a check valve 35 and the Connecting means 28 can be emptied. The reservoir 32 In turn, printing technology via a device 37 with the Slider element 12 coupled.

    Der zweite Ausgangskanal 18 ist zum Einen über Verbindungsmittel 38 und eine Drossel 40 mit einem zweiten Rezipienten 42 verbunden und andererseits über Verbindungsmittel 44 und eine Drossel 46 an ein als zweiten Arbeitsraum 48 dienendes Reservoir 50 gekoppelt. Die Zuleitung zum Reservoir 50 weist ebenso ein Verzögerungsglied 31 und ein Rückschlagventil 47 für die Entlüftung auf. Das Reservoir 50 ist, wie das Reservoir 34, jedoch auf der entgegengesetzter Seite über eine Vorrichtung 39 mit dem Schieberelement 12 gekoppelt.The second output channel 18 is on the one over Connecting means 38 and a throttle 40 with a second Recipients 42 connected and on the other hand Connecting means 44 and a throttle 46 to a second Working space 48 serving reservoir 50 coupled. The Feed to the reservoir 50 also has one Delay member 31 and a check valve 47 for the Vent on. The reservoir 50, like the reservoir 34, however, on the opposite side via a device 39 coupled to the slider element 12.

    Das Schieberelement 12 weist in seinem Innern durchgehende Kanäle 52 auf, die die jeweilige Verbindung zwischen dem einen Eingangskanal 14, den beiden Ausgangskanälen 16 beziehungsweise 18 und dem Entlüftungskanal 20 in Abhängigkeit von der Stellung des Schieberelementes 12 vermitteln. Die Beweglichkeit des Schieberelementes 12 wird durch eine Kontereinrichtung 54, die in der Figur 1 schematisch als elastische Feder 64 dargestellt ist, reguliert.The slider element 12 has continuous inside Channels 52, the respective connection between the an input channel 14, the two output channels sixteenth or 18 and the venting channel 20 in Dependence on the position of the slide element 12 convey. The mobility of the slide element 12 is by a counter device 54, which in the figure 1 is shown schematically as an elastic spring 64, regulated.

    Im Folgenden soll die Funktionsweise der erfindungsgemäßen, pneumatischen Steuer- und Regelvorrichtung 10 anhand der Darstellungen in der Figur 1 beziehungsweise Figur 2 näher beschrieben werden.In the following, the mode of operation of the invention, pneumatic control and regulating device 10 based on Representations in Figure 1 and Figure 2 closer to be discribed.

    Wird der Eingangskanal 14 der erfindungsgemäßen Vorrichtung 10, wie sie in der Figur 1 dargestellt ist, mit einem Druckmittel, wie beispielsweise Luft beaufschlagt, so gelangt das Druckmittel durch einen Kanal 56 und die Drossel 26 in den Rezipienten 24, der beispielsweise als ein elastisches Luftkissen 58 ausgeformt ist..Das Luftkissen 58 wird sich mit dem Druckmittel füllen und entsprechend aufgeblasen werden. Der Rezipient 42 ist zu diesem Zeitpunkt über einen Kanal 60 mit dem Entlüftungskanal 20 der Vorrichtung verbunden, so dass in diesem beispielsweise AtmosphärendrucK herrscht.If the input channel 14 of the device according to the invention 10, as shown in the figure 1, with a Pressure medium, such as air applied, so the pressure medium passes through a channel 56 and the throttle 26 in the recipient 24, for example, as a elastic air cushion 58 is formed .. The air cushion 58 will fill up with the pressure medium and accordingly be inflated. The recipient 42 is at this time via a channel 60 with the vent passage 20 of the Device connected, so in this example Atmosphere printing prevails.

    Während das Luftkissen 58 aufgeblasen wird, wird ein Teil des Druckmittelstromes über das Verbindungsmittel 28 und eine entsprechend eingestellte Drossel 30 dem Arbeitsraum 32 zugeführt. Die genaue Einstellung der Drossel 30 bestimmt dabei die Zeit, die notwendig ist, um den Arbeitsraum 32 zu füllen. Der Arbeitsraum 32 ist beispielsweise über eine elastische Membran 62 mit dem Schieberelement 12 verbunden. Wenn der Druck im Arbeitsraum 32 steigt, und sich die Membran 62 ausdehnt, wird die Kraft auf das Schieberelement 12 vergrößert. Das Schieberelement 12 ist über die Kontereinrichtung 54, die in der Figur 1 in Form zweier elastischer Federn 64 angedeutet ist, verrastet. Übersteigt die auf das Schieberelement 12 durch den Druck im Arbeitsraum 32 ausgeübte Kraft die Rastkraft des Schieberelementes 12, so wird dieses verschoben und nimmt eine Position ein, wie sie in Figur 2 dargestellt ist.As the air bag 58 is inflated, becomes a part the pressure medium flow through the connecting means 28 and a correspondingly set throttle 30 the working space 32nd fed. The exact setting of the throttle 30 determines while the time that is necessary to the work space 32 too to fill. The working space 32 is for example via a elastic membrane 62 connected to the slider element 12. When the pressure in the working space 32 rises, and the Membrane 62 expands, the force on the slider element 12 enlarged. The slider element 12 is over the Containers 54, which in the figure 1 in the form of two elastic springs 64 is indicated, locked. exceeds on the slider element 12 by the pressure in Working space 32 applied force the latching force of the Slider element 12, so this is moved and takes a position, as shown in Figure 2.

    In dieser Stellung gemäß Figur 2 ist nun der Rezipient 24 über einen Kanal 66 in dem Schieberelement 12 mit dem Entlüftungskanal 20 verbunden, so dass der im Rezipienten 24 aufgebaute Druck entweichen kann, und sich das Luftkissen 58 damit wieder entleert. Gleichzeitig entleert sich auch der zugehörige Arbeitsraum 32 über das Ventil 35, das Verbindungsmittel 28 und den Kanal 66 im Schieberelement 12.In this position according to FIG. 2, the recipient 24 is now via a channel 66 in the slider element 12 with the Venting channel 20 connected so that the in the recipient 24 built-up pressure can escape, and the air cushion 58 thus emptied again. At the same time empties the associated working space 32 via the valve 35, the Connecting means 28 and the channel 66 in the slider element 12th

    In der in Figur 2 dargestellten Stellung des Schieberelementes 12 ist nun wiederum der Rezipient 42, der ein flexibles Luftkissen 68 sein kann, über einen Kanal 70 mit dem einen Eingangskanal 14 verbunden, und wird von dem dort anliegenden Druckmittel gefüllt. Gleichzeitig wird ein Teil dieses Druckmittels über das Verbindungsmittel 44 und die Drossel 46 dem zweiten Arbeitsraum 48 zugeführt.In the position of the illustrated in FIG Slider element 12 is now in turn the recipient 42, the a flexible airbag 68 may be via a channel 70 is connected to the one input channel 14, and is of the filled there pressure medium filled. At the same time, a Part of this pressure medium via the connecting means 44 and the throttle 46 is supplied to the second working space 48.

    Der Druck in dem zweiten Arbeitsraum steigt nun gemäß der Einstellung der Drossel 46 an, während der Rezipient 42 aufgepumpt wird, wie bereits oben in analoger Weise für den ersten Arbeitsraum beschrieben worden ist. Über die Vorrichtung 37, die beispielsweise ebenfalls eine Membran 72 sein kann, wird damit eine Kraft auf das Schieberelement 12 ausgeübt. Ist diese Kraft hinreichend groß, um die Rastkraft des Schieberelementes 12 aufgrund der Kontereinrichtung 54 zu überwinden, hat sich also im Arbeitsraum 48 ein genügend hoher Druck aufgebaut, so wird das Schieberelement 12 wieder in seine - in Figur 1 dargestellte - erste Stellung zurückgeschoben, so dass das zugeordnete Luftkissen 68 wiederum über den Kanal 60 des Schieberelementes 12 entlüftet wird.The pressure in the second working space now increases according to the Adjustment of the throttle 46, while the recipient 42 is inflated, as already above in an analogous manner for the first working space has been described. About the Device 37, for example, also a membrane 72nd can be, is thus a force on the slider element 12th exercised. Is this force sufficiently large to the cogging force the slider element 12 due to the counter device 54 to overcome, so has a sufficient in the workspace 48 constructed high pressure, the slide element 12 is again in his - shown in Figure 1 - first position pushed back so that the associated air cushion 68 again via the channel 60 of the slide element 12th is vented.

    Damit ist ein vollständiger Zyklus der erfindungsgemäßen Steuer- und Regelvorrichtung abgeschlossen und das System beginnt wieder selbständig mit der Füllung des Rezipienten 58, wie bereits oben beschrieben.This is a complete cycle of the invention Control and regulating device completed and the system starts again independently with the filling of the recipient 58, as already described above.

    Durch das wechselseitige Aufblasen und Entlüften der beteiligten Luftkissen lässt sich mit einem auf dieser Erfindung basierenden System im Sitz eines Fahrzeuges der Sitzkomfort verbessern und eine Entlastung der Wirbelsäule Durch den sich einstellenden Massage-Effekt erreichen. Die Oszillationsperiode dieser Bewegung kann über die Einstellung der relativen Drosselgrößen, der Größe der beteiligten Volumina und nicht zuletzt auch über den geförderten Druckmittelstrom eingestellt werden. Über die direkte Einstellung der Stärke der Kontervorrichtung ist es beispielsweise dem Nutzer selbst leicht möglich die Frequenz der Bewegung individuell anzupassen.By mutual inflation and bleeding the involved air cushion can be with one on this Invention based system in the seat of a vehicle of the Improve seating comfort and relieve the spine Achieve through the self-adjusting massage effect. The Oscillation period of this movement can over the Setting the relative throttle sizes, the size of the involved volumes and last but not least about the promoted pressure medium flow can be adjusted. About the direct adjustment of the strength of the counter device is it for example, the user himself easily the frequency to adapt to the movement individually.

    Zur pneumatischen Versorgung der Vorrichtung kann ein Kleinkompressor, wie beispielsweise eine Flügelzellenpumpe oder auch eine Membranpumpe eingesetzt werden. Eine solche Vorrichtung ist in der Figur 3 dargestellt. Die durch einen Motor 76, der vorzugsweise in Form eines Elektromotors verwendet wird, angetriebene Pumpe 78 beaufschlagt die erfindungsgemäße Vorrichtung 10 über die einstellbare Drossel 15 und den Eingangskanal 14 mit dem Druckmittel, das vorzugsweise Luft ist, aber durchaus auch ein anderes Gemisch oder Gas sein kann.For pneumatic supply of the device can Small compressor, such as a vane pump or a diaphragm pump can be used. Such Device is shown in FIG. The one by one Motor 76, preferably in the form of an electric motor is used, driven pump 78 acts on the Device 10 according to the invention via the adjustable Throttle 15 and the inlet channel 14 with the pressure medium, the preferably air is, but quite another Mixture or gas can be.

    Um die Laufzeit der Pumpe zu reduzieren und ihre Lebensdauer damit zu verlängern, kann diese, wie in dem Ausführungsbeispiel der erfindungsgemäßen Vorrichtung in der Figur 3 dargestellt ist, ein Volumen 82, das dem Eingangskanal 14 vorgeschaltet ist, überwachen. Dazu wird der die Pumpe 78 antreibende Motor 76 über einen Drucksensor 84,in der Zuleitung 86 und einem zugeordneten Schalter gesteuert.To reduce the life of the pump and its life To extend this, as in the Embodiment of the device according to the invention in the Figure 3 is shown, a volume 82, the Input channel 14 is connected upstream, monitor. This will be the motor 78 driving the pump 78 via a pressure sensor 84, in the supply line 86 and an associated switch controlled.

    Die Pumpe 78 und der zugehörige, sie antreibende Motor 76 kann in unmittelbarer Nähe der pneumatischen Vorrichtung 10 angeordnet sein oder auch über entsprechende Verbindungsmittel räumlich getrennt und so gegebenenfalls akustisch vom Fahrzeugsitz entkoppelt werden.The pump 78 and the associated motor 76 driving it can in the immediate vicinity of the pneumatic device 10th be arranged or via appropriate Connecting means spatially separated and so if necessary be decoupled acoustically from the vehicle seat.

    Figur 4 zeigt einen Querschnitt durch ein Ausführungsbeispiel der erfindungsgemäßen, pneumatischen Vorrichtung.Figure 4 shows a cross section through a Embodiment of the invention, pneumatic Contraption.

    Das Druckmittel gelangt durch den Eingangskanal 14 und eine Kanalplatte 88 zum Schieberelement 12. Das Schieberelement 12 ist fest an einen Ventilkolben 90 verbunden Der Ventilkolben 90 seinerseits ist in einer Ventilkammer 92 angeordnet. Das Schieberelement 12 kann unterhalb, das heisst auf der dem Eingangskanal beziehungsweise den Ausgangskanälen abgewandten Seite der Kanalplatte 88 relativ zu dieser verschoben werden, so dass wahlweise verschiedene Öffnungen in der Kanalplatte 88 mit den Kanälen 52 des Schieberelementes 12 zur Deckung kommen. The pressure medium passes through the inlet channel 14 and a Channel plate 88 to the slider element 12. The slider element 12 is fixedly connected to a valve piston 90 The Valve piston 90 in turn is in a valve chamber 92nd arranged. The slider element 12 can below, the means on the input channel or the Output channels facing away from the channel plate 88 relative to be moved to this, so that optionally different Openings in the channel plate 88 with the channels 52 of Slider element 12 come to cover.

    Dies ist in der Figur 5 in einer Aufsicht auf die Kanalplatte 88 dargestellt. Unter der Kanalplatte 88 ist das bewegliche Schieberelement 12 eingezeichnet. Der am Eingangskanal 14 anliegende Druck hat permanent Verbindung mit der Ventilkamer 92. Der Arbeitsraum 48 ist ständig mit dem Ausgangskanal 18 und der Arbeitsraum 33 ständig mit dem Ausgangskanal 16 verbunden.This is in the figure 5 in a plan view of the Channel plate 88 shown. Under the channel plate 88 is the movable slide element 12 located. The am Input channel 14 applied pressure has permanent connection with the Ventilkamer 92. The working space 48 is constantly with the output channel 18 and the working space 33 constantly with the Output channel 16 connected.

    In der in Figur 5 gezeigten Stellung des Schieberelementes 12 wäre der Verbindungskanal der Ventilkammer 92 zum Ausgangskanal 18 freigegeben und der Ausgangskanal 16 über einen Kanal im Schieberelement 12 mit dem Entlüftungskanal 20 der Vorrichtung verbunden.In the position of the slide element shown in Figure 5 12 would be the connecting channel of the valve chamber 92 for Output channel 18 is released and the output channel 16 via a channel in the slider element 12 with the vent channel 20 connected to the device.

    Durch eine solche Stellung des Schieberelementes 12 wird der Druck im Arbeitsraum 32 entlüftet und im Arbeitsraum 48 erhöht. Dies geschieht solange, bis die Druckdifferenz der beiden Arbeitsräume 48 und 32 groß genug ist, um die einstellbare Rastkraft der Kontereinrichtung 54, die im Ausführungsbeispiel der Figur 4 durch eine vorgespannte Rastfeder in Form einer Schnappkugel 94 realisiert ist, zu überwinden. Die Kontereinrichtung 54 kann aber beispielsweise ebenso durch eine Blattfeder oder andere, dem Fachmann geläufige Kontereinrichtungen realisiert werden. Der Anlagedruck der Kontereinrichtung kann über einen Stellmechanismus 96 variiert werden kann.By such a position of the slider element 12 of the Pressure in the working space 32 vented and in the working space 48 elevated. This happens until the pressure difference of the two work spaces 48 and 32 is large enough to the adjustable latching force of the counter device 54, which in Embodiment of Figure 4 by a prestressed Detent spring in the form of a snap ball 94 is realized, too overcome. However, the counter device 54 can for example, by a leaf spring or other, the Professional common Kontereinrichtungen be realized. The system pressure of the counter device can via a Actuation mechanism 96 can be varied.

    Der Differenzdruck der Arbeitsräume 48 und 32 bewirkt eine resultierende Kraft auf die flexiblen Membranen 62 und 72, so dass der mit den Membranen verbundene Ventilkolben 90 gegen die Kraft der Rastfeder 94 bewegt wird und das Schieberelement 12 in die zweite Endstellung der Vorrichtung 10 verschoben wird.The differential pressure of the working spaces 48 and 32 causes a resulting force on the flexible membranes 62 and 72, so that the valve piston connected to the membranes 90th is moved against the force of the detent spring 94 and the Slider element 12 in the second end position of the device 10 is moved.

    In dieser Stellung wird nun der Ausgangskanal 16 vom Schieberelement 12 freigegeben und mit der Ventilkammer 92 verbunden. Der Ausgangskanal 18 wird über einen entsprechenden Kanal im Schieberelement 12 mit dem Entlüftungskanal 20 verbunden. Diese Stellung des Ventilkolbens 90 wird beibehalten bis der Differenzdruck der beiden Arbeitsräume 32 und 48 die Rastkraft der Kontereinrichtung 54 wiederum überwindet und der Ventilkolben 90 und damit auch das Schieberelement 12 zurückgeschaltet wird.In this position, the output channel 16 is now from the Slider element 12 is released and with the valve chamber 92nd connected. The output channel 18 is connected via a corresponding channel in the slide element 12 with the Venting channel 20 connected. This position of the Valve spool 90 is maintained until the differential pressure of two working spaces 32 and 48, the locking force of Kontereinrichtung 54 in turn overcomes and the Valve piston 90 and thus also the slide element 12th is switched back.

    Die erfindungsgemäße Vorrichtung ist nicht auf die Nutzung zur wechselseitigen Be- und Entlüftung von Luftkissen in Fahrzeugsitzen beschränkt.The device according to the invention is not for use for reciprocal ventilation of air cushions in Limited vehicle seats.

    Als weitere Einsatzgebiete der erfindungsgemäßen, pneumatischen Steuer- und Regelvorrichtung sind prinzipiell alle intermittierenden oder oszillierenden Bewegungen von Kolben und anderen Stellelementen denkbar.As further applications of the invention, pneumatic control and regulating device are in principle all intermittent or oscillating movements of Piston and other control elements conceivable.

    Claims (18)

    1. Pneumatic control device (10) having an inlet passage (14) to which pressure medium can be admitted, having two outlet passages (16, 18) and having a vent passage (20), and also having a movable valve piston (90) switching between these passages and provided in a valve chamber (92), one outlet passage (16, 18) of the pneumatic control device (10) being connected to the one inlet passage (14) and the other outlet passage (18, 16) at the same time being connected to the vent passage (20) of the device (10) in each case in an alternating manner by a slide element (12) connected to the pneumatically driven valve piston (90), characterized in that the connection between the one respective outlet passage (16, 18) and the inlet passage (14) and between the second outlet passage (18, 16) and the vent passage (20) is realized by passages (52) in the slide element (12).
    2. Pneumatic control device (10) according to Claim 1, characterized in that the one inlet passage (14) connected to one outlet passage (16, 18) is at the same time also connected via a pneumatic delay element (29, 31) to a respective working space (32, 48) assigned to the outlet passage.
    3. Pneumatic control device according to Claim 2, characterized in that the delay element (29, 31), for producing a predeterminable time constant, comprises a restrictor (30, 46), in particular an adjustable restrictor variable in diameter.
    4. Pneumatic control device (10) according to Claim 3, characterized in that the working spaces (32, 48) assigned to the respective outlet passages (16, 18) are part of the valve chamber (92).
    5. Pneumatic control device (10) according to Claim 3, 4 or 2, characterized in that the working spaces (32, 48) are each separated from the rest of the valve chamber (92) via diaphragms (62, 72) connected to the valve piston (90).
    6. Pneumatic control device (10) according to Claim 5, characterized in that the diaphragms (62, 72) of the working spaces (32, 48) are made of an elastomer, in particular silicone or rubber.
    7. Pneumatic control device (10) according to Claim 6, characterized in that the valve piston (90) can be moved in the valve chamber (92) via the diaphragms (62, 72) by a pressure difference in the two working spaces (32, 48).
    8. Pneumatic control device (10) according to Claim 7, characterized in that the mobility of the valve piston (90) in the valve chamber (92) can be set via a check device (54).
    9. Pneumatic control device (10) according to Claim 8, characterized in that the check device (54) has an elastic spring element (94).
    10. Pneumatic control device (10) according to one of the preceding claims, characterized in that the device (10) is at least partly made of plastic.
    11. Pneumatic control device (10) according to one of the preceding claims, characterized in that the one inlet passage is connected to a small compressor (78), such as, for example, a vane compressor, or a diaphragm pump, and the outlet passages (32, 48) are each connected to a recipient (24, 42).
    12. Pneumatic control device (10) according to Claim 11, characterized in that the inlet-passage-side compressor (78) can be controlled by a pressure sensor (84) provided in a connecting means (86).
    13. Pneumatic control device (10) according to Claim 12 or 11, characterized in that the oulet-passage-side recipients (24, 42) are designed as elastic air cushions (58, 68).
    14. Pneumatic control device (10) according to Claim 13, characterized in that the elastic air cushions (58, 68) are integrated in the upholstery of a vehicle seat.
    15. Vehicle seat for a motor vehicle, characterized in that at least one but preferably several control devices (10) described according to Claims 12 to 14 are integrated in the seat for increasing the seating comfort and/or for producing a massage effect.
    16. Method for the pneumatic control of pressure medium flows, in which method a constant pressure is applied to an inlet passage (14) of a control device (10) which comprises at least one inlet passage (14), a vent passage (20) and two outlet passages (16, 18), so that, in a first end position of a movable slide element (12) of the device, a pressure medium is directed into a first outlet passage (16) of the device (10), the slide element (12) being held in this first end position via a checks device (54) until the pressure difference between a first working space (32), connected to the first outlet passage (16), and a second working space (48), which in turn is connected to a second outlet passage (18) and a vent passage (20), is so large that the force on a valve piston (90) connected to the slide element (12) overcomes the latching force of the check device (54), and the slide element (12) is displaced into a second end position which is likewise secured by latching and which, through passages (52) present in the slide element (12), enables the first working space (32) and the first outlet passage (16) to now be connected to the vent passage (20) and, on the other hand, enables the one inlet passage (14) to be connected to the second outlet passage (18) and to the second working space (48) until the force transmitted to the valve piston (90) via the second working space (48) again exceeds the latching force of the valve piston (90) in the second end position and the slide element (12) is displaced back into the first end position.
    17. Pneumatic control method according to Claim 16, characterized in that the pressure medium from the respective outlet passage (16, 18) is admitted to the first working space (32) or the second working space (48), respectively, in each case via at least one delay element (29, 30), in particular an adjustable restrictor (30, 46).
    18. Pneumatic control method according to Claim 17, characterized in that the first working space (32) and the second working space (48) each act on the valve piston via elastic elements (62, 72), in particular diaphragms (62, 72).
    EP02740329A 2001-05-18 2002-05-06 Device and method for the pneumatic control and regulation of hydraulic fluid flows Expired - Lifetime EP1404977B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE10124334 2001-05-18
    DE2001124334 DE10124334A1 (en) 2001-05-18 2001-05-18 Pressure medium flow pneumatic control/regulation arrangement has sliding element joined to valve piston that alternately connects output channels to input and vent channels
    PCT/DE2002/001682 WO2002095241A1 (en) 2001-05-18 2002-05-06 Device and method for the pneumatic control and regulation of hydraulic fluid flows

    Publications (2)

    Publication Number Publication Date
    EP1404977A1 EP1404977A1 (en) 2004-04-07
    EP1404977B1 true EP1404977B1 (en) 2005-09-07

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP02740329A Expired - Lifetime EP1404977B1 (en) 2001-05-18 2002-05-06 Device and method for the pneumatic control and regulation of hydraulic fluid flows

    Country Status (6)

    Country Link
    US (1) US6988508B2 (en)
    EP (1) EP1404977B1 (en)
    JP (1) JP2004519640A (en)
    KR (1) KR20030017635A (en)
    DE (2) DE10124334A1 (en)
    WO (1) WO2002095241A1 (en)

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    US7658598B2 (en) * 2005-10-24 2010-02-09 Proportionair, Incorporated Method and control system for a pump
    CA2588054C (en) * 2004-11-17 2017-03-07 Proportionair, Inc. Control system for an air operated diaphragm pump
    US7517199B2 (en) * 2004-11-17 2009-04-14 Proportion Air Incorporated Control system for an air operated diaphragm pump
    EP2361800B1 (en) * 2010-02-17 2013-04-24 L & P Swiss Holding AG Adjusting device for a seat and method of operating an adjusting device
    US20120315163A1 (en) * 2011-06-13 2012-12-13 Mi Yan Air-driven hydraulic pump with pressure control
    US20130062920A1 (en) * 2011-09-14 2013-03-14 Ron McDiarmid Chair with inflatable bladder system
    EP2711561B1 (en) * 2012-09-21 2019-08-28 Danfoss Power Solutions Aps Electrohydraulic control valve arrangement
    CN104500476B (en) * 2014-12-15 2017-04-19 中煤北京煤矿机械有限责任公司 Alternate one-way valve and pressurization system
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    FI128135B (en) * 2017-10-20 2019-10-31 Pneumaxpert Oy Arrangement with oscillating cylinder
    DE102020104615A1 (en) 2020-02-21 2021-08-26 Faurecia Autositze Gmbh Valve device and valve system equipped therewith, as well as control device contained therein for fluid flow control

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    Also Published As

    Publication number Publication date
    DE10124334A1 (en) 2002-11-21
    DE50204187D1 (en) 2005-10-13
    US6988508B2 (en) 2006-01-24
    JP2004519640A (en) 2004-07-02
    WO2002095241A1 (en) 2002-11-28
    KR20030017635A (en) 2003-03-03
    US20040020531A1 (en) 2004-02-05
    EP1404977A1 (en) 2004-04-07

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