EP1798422A2 - Sensor device for a piston-cylinder device - Google Patents
Sensor device for a piston-cylinder device Download PDFInfo
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- EP1798422A2 EP1798422A2 EP06024877A EP06024877A EP1798422A2 EP 1798422 A2 EP1798422 A2 EP 1798422A2 EP 06024877 A EP06024877 A EP 06024877A EP 06024877 A EP06024877 A EP 06024877A EP 1798422 A2 EP1798422 A2 EP 1798422A2
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- European Patent Office
- Prior art keywords
- piston
- sensor device
- cylinder unit
- unit according
- housing
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- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means
Definitions
- the invention relates to a sensor device for a piston-cylinder unit according to the preamble of patent claim 1.
- a sensor device which is arranged in a receiving opening of the cylinder.
- the sensor device comprises an axially movable sensor, which is biased by a spring on the surface of a piston rod.
- a cover closes the bore in the cylinder and acts as a support surface for the spring. In the cover a passage opening for a cable harness to the sensor is executed.
- a piston-cylinder unit in the design of a vibration damper is often filled via the open end of the cylinder with damping medium.
- the piston is introduced into the cylinder together with the piston rod, thereby brushing the sensor, the u. U. even on the piston can clamp.
- a stroke loss of the piston at least in the order of the diameter of the receiving opening.
- a vibration damper which has an end cap on an end face of a cylinder in which a sensor device in the form of magnetic field sensors is injected together with electronic circuits.
- a basic requirement in the use of magnetic field sensors is that the distance of a sensor as exactly as possible to the measuring surface, in this case the piston rod, must be complied with so that usable signals are present. At least in theory, this requirement can be fulfilled with a spraying method, but then it has to be accepted that, in the event of a defect or an impermissible signal deviation of the sensor, both the sensor and the end cap can no longer be used and thus represent a cost factor.
- Object of the present invention is to realize a sensor device for a piston-cylinder unit, in which on the one hand a defined position of a sensor to a piston rod can be met and on the other hand, the assembly of the piston-cylinder unit can proceed as easily as possible.
- the object is achieved in that the receptacle for the sensor device is part of a housing fastened outside the cylinder.
- the big advantage is that the sensor device is not in contact with the working spaces of the piston-cylinder unit. Consequently, no sealing measures must be taken. Furthermore, there is a larger space for the readjustment movement of the sensor device.
- the sensor device is mounted in the housing via a rotary joint and performs a pivoting movement in the direction of the piston rod about this rotary joint.
- the rotary joint is designed on the outer edge side of the housing. This makes the swivel joint easily accessible during assembly.
- pivoting movement is supported by a spring. Due to the lever ratios to the swivel joint, a sufficiently large adjusting force can be achieved with a very weak spring.
- the housing has a support surface for the spring, so that additional components can be omitted.
- the spring is designed as a leaf spring.
- the leaf spring is wave-shaped.
- a leaf spring offers the additional advantage that the support surface can be formed by a groove.
- a particularly compact unit is achieved in that the sensor device has a carrier which is designed in one piece with the spring.
- the carrier consists of a plastic, so that any spring shapes can be produced.
- the housing may carry an elastomeric body which acts as a spring on the sensor device.
- a housing-side bearing part has a longitudinal slot for radial mounting movement of a bearing part of the sensor device, wherein the bearing part is mounted on at least one lateral flattening in a defined mounting position in the housing side bearing part.
- the sensor device comprises not only the sensor itself, but also a signal processing unit.
- the sensor device has a printed circuit board with a section angled in the direction of the piston rod, on which the sensor is arranged.
- the sensor device is a comparatively expensive component. So that no special protective measures, eg. B. when painting the piston-cylinder unit are necessary, the housing is made radially divisible and can therefore be attached at the end of the assembly.
- the sensor device should not only maintain its radial position but also its axial position during a piston rod movement. Therefore, the housing-side bearing part has an axial securing device for the sensor device.
- a holder for a train protection is attached to the cylinder of the piston-cylinder unit.
- the bearing part of the sensor device has a cable guide for a cable set of the sensor device.
- the vibration damper 1 shows an upper part of a piston-cylinder unit in the design of a known vibration damper 1 of any design.
- a piston rod 5 is guided axially displaceable and via a connecting joint 7 z. B. attached to a vehicle body or a vehicle cabin.
- the vibration damper 1 has a pressure stop spring 9 in the form of an elastomer body, which comes from a defined retraction position of the piston rod on an end face 47 of an end cap 11 to the plant.
- the one-piece end cap 11 as an outer-side housing on the cylinder 3 includes a sensor device 13, which controls the movement of the piston rod, for. B. stroke position or piston rod speed detected.
- a segment-like receiving opening 15 is executed, which extends radially to a through hole 53 for the piston rod 5.
- the sensor device includes, inter alia, a carrier 17 for a board 19 and a cable set 21, which has a sleeve 23 with Has transverse webs, which engages in a cylinder-side bracket 25, are supported on the front side and thus form a train protection for the harness.
- the receiving opening 15 of the housing has at the outer edge of a bearing part 27 with a longitudinal slot 29.
- a bearing member 31 At the sensor device 13 is a bearing member 31 with two lateral flats 33 available. The distance of the lateral flattening is at most as large as the slit width of the longitudinal slot 29, so that the sensor device can be mounted with a radial assembly movement into the housing-side bearing part 27.
- the housing-side bearing part 27 and the bearing part 31 of the sensor device 13 form a rotary joint 35 (FIG. 3), via which the sensor device can execute a pivoting movement in the direction of the piston rod 5.
- a cable guide 34 of the cable set 21 performs ( Figure 2).
- FIGS. 2 and 3 shows the cut end cap 11 and the housing with the receiving opening 15.
- a spring 37 which is formed in this embodiment as a wave-shaped leaf spring.
- the spring 37 is supported at the end on a support surface of a groove 39 on the housing 11.
- the carrier 17 is made of a plastic which may be made in one piece with the spring 37.
- a sensor 41 is arranged on an angled in the direction of the piston rod 5 section 43 of the circuit board 19, so that no cable connections are necessary between the sensor and the board.
- the two flats 33 are aligned in the direction of the longitudinal slot 29 of the bearing part 27 (Fig.1).
- the bearing part 31 of the sensor device in the bearing part 27 has reached the middle position, the sensor device 13 is given away into the receiving opening 15 until the sensor 41 rests against the piston rod 5.
- the pivot 35 is locked against a radial force.
- the spring 37 is axially tensioned and then inserted with its outwardly facing end in the lateral groove 39 of the receiving opening.
- the sensor device 13 is not loaded by the stop buffer 9, since webs 45 extending radially and in the circumferential direction ensure a force flow from the end face 47 (FIG. 1) of the end cap 11 to the cylinder 3.
- Fig. 4 shows a piston-cylinder unit 1, which is constructed very similar, as already described for Fig. 1. Notwithstanding, there is no stop buffer 9, so that the sensor device 13 is accessible on the front side of the housing 11. In addition, in Fig. 4, a protective tube 49 is shown with a pictorial eruption for better representation of the sensor device 13.
- FIGS. 1 to 3 The essential difference from FIGS. 1 to 3 is that the housing 11 radially into two segments 11 a; 11b is divisible executed.
- a dividing joint 51 extends from the outer edge to the passage opening 53 for the piston rod 5.
- FIG. 5 the housing 11 with its segments 11 a; 11 b shown in a separate position.
- the segment 11a On the segment 11a are T-shaped, axially extending webs 55th executed, which can be inserted into T-shaped grooves 57 of the segment 11 b and thus firmly connect the segments to each other to the housing 11.
- the structure of the carrier 17 with the board 19 corresponds to FIG. 2.
- the pivot bearing 27 has an annular web 59, on the end face 61 of the carrier 17 comes in the final assembly position to the plant.
- a second annular web 63 As a further support surface is a second annular web 63, which is designed concentrically to the pivot bearing 27 at a radial distance.
- the housing 11 has a cylindrical bearing body 65 which serves as a bearing for an elastic transmission element 67, which comes to rest in the mounting position according to FIG. 6 at the lateral edge of the carrier 17 and transmits a spring force to the sensor device 13, so that this one Pivoting movement about the pivot bearing 35, formed by the bearing parts 27; 31, can perform.
- An angular web 69 represents an axial securing device for the sensor device 13.
- the board 19 is protected by a potting compound, not shown, as it is often used in electrical engineering.
- the variant according to FIGS. 4 to 6 has the advantage that the housing can still be mounted even if the connection joint 7 is already connected to the piston rod 5.
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- Physics & Mathematics (AREA)
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
Die Erfindung betrifft eine Sensoreinrichtung für ein Kolben-Zylinderaggregat gemäß dem Oberbegriff von Patentanspruch 1.The invention relates to a sensor device for a piston-cylinder unit according to the preamble of patent claim 1.
Aus der gattungsbildenden
Diese Sensoreinrichtung führt zu schwerwiegenden Nachteilen bei der Montage des Kolben-Zylinderaggregates und dem Aggregat an sich. Ein Kolben-Zylinderaggregat in der Bauform eines Schwingungsdämpfers wird häufig über das offene Ende des Zylinders mit Dämpfmedium gefüllt. Der Kolben wird zusammen mit der Kolbenstange in den Zylinder eingeführt und streift dabei den Sensor, der u. U. sogar am Kolben festklemmen kann. Des Weiteren muss man bei dieser Konstruktion mit einem Hubverlust des Kolbens zumindest in der Größenordnung des Durchmessers der Aufnahmeöffnung rechnen.This sensor device leads to serious disadvantages in the assembly of the piston-cylinder unit and the unit itself. A piston-cylinder unit in the design of a vibration damper is often filled via the open end of the cylinder with damping medium. The piston is introduced into the cylinder together with the piston rod, thereby brushing the sensor, the u. U. even on the piston can clamp. Furthermore, one must expect in this construction with a stroke loss of the piston at least in the order of the diameter of the receiving opening.
Aus der
Aufgabe der vorliegenden Erfindung ist es, eine Sensoreinrichtung für ein Kolben-Zylinderaggregat zu realisieren, bei dem einerseits eine definierte Position eines Sensors zu einer Kolbenstange eingehalten werden kann und andererseits die Montage des Kolben-Zylinderaggregats möglichst einfach ablaufen kann.Object of the present invention is to realize a sensor device for a piston-cylinder unit, in which on the one hand a defined position of a sensor to a piston rod can be met and on the other hand, the assembly of the piston-cylinder unit can proceed as easily as possible.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass die Aufnahme für die Sensoreinrichtung Bestandteil eines außerhalb des Zylinders befestigten Gehäuses ist.According to the invention, the object is achieved in that the receptacle for the sensor device is part of a housing fastened outside the cylinder.
Der große Vorteil besteht darin, dass die Sensoreinrichtung in keinem Kontakt mit den Arbeitsräumen des Kolben-Zylinderaggregats steht. Folglich müssen auch keine Abdichtungsmaßnahmen getroffen werden. Des Weiteren liegt ein größerer Bauraum für die Nachstellbewegung der Sensoreinrichtung vor.The big advantage is that the sensor device is not in contact with the working spaces of the piston-cylinder unit. Consequently, no sealing measures must be taken. Furthermore, there is a larger space for the readjustment movement of the sensor device.
In weiterer konstruktiver Ausgestaltung ist die Sensoreinrichtung über ein Drehgelenk in dem Gehäuse gelagert ist und führt um dieses Drehgelenk eine Schwenkbewegung in Richtung der Kolbenstange aus.In a further design refinement, the sensor device is mounted in the housing via a rotary joint and performs a pivoting movement in the direction of the piston rod about this rotary joint.
Gemäß einem vorteilhaften Unteranspruch ist das Drehgelenk außenrandseitig am Gehäuse ausgeführt. Damit ist das Drehgelenk bei der Montage gut zugänglich.According to an advantageous embodiment, the rotary joint is designed on the outer edge side of the housing. This makes the swivel joint easily accessible during assembly.
Es ist vorgesehen, dass die Schwenkbewegung von einer Feder unterstützt wird. Aufgrund der Hebelverhältnisse zum Drehgelenk kann mit einer sehr schwachen Feder eine ausreichend große Nachstellkraft erreicht werden.It is envisaged that the pivoting movement is supported by a spring. Due to the lever ratios to the swivel joint, a sufficiently large adjusting force can be achieved with a very weak spring.
Das Gehäuse weist eine Abstützungsfläche für die Feder auf, so dass zusätzliche Bauteile entfallen können.The housing has a support surface for the spring, so that additional components can be omitted.
Bei einer Ausführungsform ist die Feder als eine Blattfeder ausgeführt. Im Hinblick auf eine kleine Federkraft ist die Blattfeder wellenförmig geformt.In one embodiment, the spring is designed as a leaf spring. With regard to a small spring force, the leaf spring is wave-shaped.
Eine Blattfeder bietet den zusätzlichen Vorteil, dass die Abstützungsfläche von einer Nut gebildet werden kann.A leaf spring offers the additional advantage that the support surface can be formed by a groove.
Eine besonders kompakte Baueinheit wird dadurch erreicht, dass die Sensoreinrichtung einen Träger aufweist, der einteilig mit der Feder ausgeführt ist.A particularly compact unit is achieved in that the sensor device has a carrier which is designed in one piece with the spring.
Vorteilhafterweise besteht der Träger aus einem Kunststoff, so dass beliebige Federformen herstellbar sind.Advantageously, the carrier consists of a plastic, so that any spring shapes can be produced.
Alternativ kann das Gehäuse einen Elastomerkörper tragen, der als Feder auf die Sensoreinrichtung einwirkt.Alternatively, the housing may carry an elastomeric body which acts as a spring on the sensor device.
Eine besonders montagefreundliche Bauweise wird dadurch erreicht, dass ein gehäuseseitiges Lagerteil einen Längsschlitz zur radialen Montagebewegung eines Lagerteils der Sensoreinrichtung aufweist, wobei das Lagerteil über mindestens eine seitliche Abflachung in einer definierten Montageposition in das gehäuseseitige Lagerteil montierbar ist.A particularly easy to install construction is achieved in that a housing-side bearing part has a longitudinal slot for radial mounting movement of a bearing part of the sensor device, wherein the bearing part is mounted on at least one lateral flattening in a defined mounting position in the housing side bearing part.
Die Sensoreinrichtung umfasst nicht nur den Sensor selbst, sondern auch eine Signalverarbeitungseinheit. Um Signalübertragungsschwierigkeiten zwischen dem Sensor und der Signalverarbeitungseinrichtung zu vermeiden weist die Sensoreinrichtung eine Platine mit einem in Richtung der Kolbenstange abgewinkelten Abschnitt auf, auf der der Sensor angeordnet ist.The sensor device comprises not only the sensor itself, but also a signal processing unit. In order to avoid signal transmission difficulties between the sensor and the signal processing device, the sensor device has a printed circuit board with a section angled in the direction of the piston rod, on which the sensor is arranged.
Die Sensoreinrichtung ist ein vergleichsweise teures Bauteil. Damit für die Montage keine besonderen Schutzmaßnahmen, z. B. beim Lackieren des Kolben-Zylinderaggregats notwendig sind, ist das Gehäuse radial teilbar ausgeführt und kann deshalb am Ende der Montage befestigt werden.The sensor device is a comparatively expensive component. So that no special protective measures, eg. B. when painting the piston-cylinder unit are necessary, the housing is made radially divisible and can therefore be attached at the end of the assembly.
Die Sensoreinrichtung soll bei einer Kolbenstangenbewegung nicht nur seine-radiale, sondern auch seine axiale Position beibehalten. Deshalb weist das gehäuseseitige Lagerteil eine Axialsicherung für die Sensoreinrichtung auf.The sensor device should not only maintain its radial position but also its axial position during a piston rod movement. Therefore, the housing-side bearing part has an axial securing device for the sensor device.
Zum Schutz eines Kabelsatzes der Sensoreinrichtung ist am Zylinder des Kolben-Zylinderaggregates eine Halterung für eine Zugsicherung befestigt ist.To protect a cable set of the sensor device, a holder for a train protection is attached to the cylinder of the piston-cylinder unit.
Zur Vermeidung von Verdrillbewegungen weist das Lagerteil der Sensoreinrichtung eine Kabelführung für einen Kabelsatz der Sensoreinrichtung aufweist.In order to avoid twisting movements, the bearing part of the sensor device has a cable guide for a cable set of the sensor device.
Anhand der folgenden Figurenbeschreibung soll die Erfindung näher erläutert werden.The invention will be explained in more detail with reference to the following description of the figures.
Es zeigt:
- Fig. 1
- Teilansicht eines Kolben-Zylinderaggregats in der Bauform eines Schwingungsdämpfers mit einem einteiligen Gehäuse für eine Sensoreinrichtung
- Fig. 2 u. 3
- Schnittdarstellung durch das Gehäuse nach Fig. 1
- Fig. 4
- Teilansicht eines Kolben-Zylinderaggregat mit einem radial teilbaren Gehäuse für die Sensoreinrichtung
- Fig. 5
- Explosionszeichnung des Gehäuses nach Fig. 4
- Fig. 6
- Montagestellung der Sensoreinrichtung nach Fig. 4
- Fig. 1
- Partial view of a piston-cylinder unit in the construction of a vibration damper with a one-piece housing for a sensor device
- Fig. 2 u. 3
- Sectional view through the housing according to FIG. 1
- Fig. 4
- Partial view of a piston-cylinder unit with a radially divisible housing for the sensor device
- Fig. 5
- Exploded view of the housing of FIG .. 4
- Fig. 6
- Assembly position of the sensor device according to FIG. 4
Die Figur 1 zeigt einen oberen Teil eines Kolben-Zylinderaggregats in der Bauform eines an sich bekannten Schwingungsdämpfers 1 beliebiger Bauform. Innerhalb eines Zylinders 3 ist eine Kolbenstange 5 axial verschiebbar geführt und über ein Anschlussgelenk 7 z. B. an einem Fahrzeugaufbau oder eine Fahrzeugkabine befestigt. Der Schwingungsdämpfer 1 verfügt über eine Druckanschlagfeder 9 in Form eines Elastomerkörpers, der ab einer definierten Einfahrposition der Kolbenstange auf einer Stirnfläche 47 einer Endkappe 11 zur Anlage kommt.1 shows an upper part of a piston-cylinder unit in the design of a known vibration damper 1 of any design. Within a
Die einteilige Endkappe 11 als außenseitiges Gehäuse am Zylinder 3 enthält eine Sensoreinrichtung 13 , die die Bewegung der Kolbenstange, z. B. Hublage oder Kolbenstangengeschwindigkeit erfasst. In der Endkappe ist für die Sensoreinrichtung 13 eine segmenartige Aufnahmeöffnung 15 ausgeführt, die sich radial bis zu einer Durchgangsöffnung 53 für die Kolbenstange 5 erstreckt.. Die Sensoreinrichtung umfasst u. a. einen Träger 17 für eine Platine 19 und einen Kabelsatz 21, der eine Hülse 23 mit Querstegen aufweist, die in eine zylinderseitige Halterung 25 eingreift, sich stirnseitig abstützen und damit eine Zugsicherung für den Kabelsatz bilden.The one-
Die Aufnahmeöffnung 15 des Gehäuses weist am äußeren Rand ein Lagerteil 27 mit einem Längsschlitz 29 auf. An der Sensoreinrichtung 13 steht ein Lagerteil 31 mit zwei seitlichen Abflachungen 33 zur Verfügung. Der Abstand der seitlichen Abflachungen ist maximal so groß wie die Schlitzbreite des Längsschlitzes 29, so dass die Sensoreinrichtung mit einer radialen Montagebewegung in das gehäuseseitige Lagerteil 27 montierbar ist. Das gehäuseseitige Lagerteil 27 und das Lagerteil 31 der Sensoreinrichtung 13 bilden ein Drehgelenk 35 (Fig. 3), über das die Sensoreinrichtung eine Schwenkbewegung in Richtung der Kolbenstange 5 ausführen kann. In dem Lagerteil 31 ist eine Kabelführung 34 des Kabelsatzes 21 ausführt (Fig 2).The receiving
Die Zusammenschau der Fig. 2 und 3 zeigt die geschnittene Endkappe 11 bzw. das Gehäuse mit der Aufnahmeöffnung 15. Zur Unterstützung der Schwenkbewegung der Sensoreinrichtung 13, insbesondere des Trägers 17, dient eine Feder 37, die in dieser Ausführungsform als wellenförmige Blattfeder geformt ist. Die Feder 37 stützt sich endseitig an einer Abstützfläche einer Nut 39 am Gehäuse 11 ab. Zur weiteren Vereinfachung der Montage besteht der Träger 17 aus einem Kunststoff, der einteilig mit der Feder 37 hergestellt sein kann. Ein Sensor 41 ist auf einem in Richtung der Kolbenstange 5 abgewinkelten Abschnitt 43 der Platine 19 angeordnet, so dass zwischen dem Sensor und der Platine keine Kabelverbindungen notwendig sind.The combination of FIGS. 2 and 3 shows the
Zur Montage der Sensoreinrichtung 13 werden die beiden Abflachungen 33 in Richtung des Längsschlitzes 29 des Lagerteils 27 ausgerichtet (Fig.1). Wenn das Lagerteil 31 der Sensoreinrichtung in dem Lagerteil 27 die Mittenposition erreicht hat, wird die Sensoreinrichtung 13 in die Aufnahmeöffnung 15 verschenkt, bis der Sensor 41 an der Kolbenstange 5 anliegt. In dieser Position ist das Drehgelenk 35 gegen eine radiale Krafteinwirkung verriegelt. Die Feder 37 wird axial gespannt und dann mit ihrem nach außen weisenden Ende in der seitlichen Nut 39 der Aufnahmeöffnung eingeführt. Der vorbeschriebene Montageablauf kann auch dann noch vorgenommen werden, wenn das Kolben-Zylinderaggregat bereits fertig montiert ist.For mounting the
Die Sensoreinrichtung 13 wird nicht durch den Anschlagpuffer 9 belastet, da radial und in Umfangsrichtung verlaufende Stege 45 für einen Kraftfluss von der Stirnfläche 47 (Fig. 1) der Endkappe 11 auf den Zylinder 3 sorgen.The
Die Fig. 4 zeigt ein Kolben-Zylinderaggregat 1, das sehr ähnlich aufgebaut ist, wie bereits zur Fig. 1 beschrieben ist. Abweichend liegt kein Anschlagpuffer 9 vor, so dass die Sensoreinrichtung 13 stirnseitig am Gehäuse 11 zugänglich ist. Zusätzlich ist in der Fig. 4 ein Schutzrohr 49 mit einem bildlichen Ausbruch zur besseren Darstellbarkeit der Sensoreinrichtung 13 eingezeichnet.Fig. 4 shows a piston-cylinder unit 1, which is constructed very similar, as already described for Fig. 1. Notwithstanding, there is no stop buffer 9, so that the
Der wesentliche Unterschied zu den Fig. 1 bis 3 besteht darin, dass das Gehäuse 11 radial in zwei Segmente 11 a; 11b teilbar ausgeführt ist. Eine Teilungsfuge 51 errstreckt sich vom äußeren Rand bis zur Durchgangsöffnung 53 für die Kolbenstange 5.The essential difference from FIGS. 1 to 3 is that the
In der Fig. 5 ist das Gehäuse 11 mit seinen Segmenten 11 a; 11 b in einer getrennten Stellung gezeigt. An dem Segment 11a sind T-förmige, axial verlaufende Stege 55 ausgeführt, die in T-förmige Nuten 57 des Segments 11 b eingeschoben werden können und damit die Segmente fest miteinander zum Gehäuse 11 verbinden. Der Aufbau des Trägers 17 mit der Platine 19 entspricht der Fig. 2 . Zusätzlich verfügt das Drehlager 27 über einen Ringsteg 59, auf dessen Stirnfläche 61 der Träger 17 in der Endmontagestellung zur Anlage kommt. Als weitere Unterstützungsfläche dient ein zweiter Ringsteg 63, der in einem radialen Abstand konzentrisch zum Drehlager 27 ausgeführt ist.In Fig. 5, the
Das Gehäuse 11 verfügt über einen zylindrischen Lagerkörper 65, der als Lagerstelle für ein elastisches Übertragungselement 67 dienst, das in der Montagestellung gemäß Fig. 6 am seitlichen Rand des Trägers 17 zur Anlage kommt und eine Federkraft auf die Sensoreinrichtung 13 überträgt, so dass diese eine Schwenkbewegung um das Schwenklager 35, gebildet von den Lagerteilen 27; 31, ausführen kann. Ein Winkelsteg 69 stellt eine Axialsicherung für die Sensoreinrichtung 13 dar.The
Geschützt wird die Platine 19 von einer nicht dargestellten Vergussmasse, wie sie in der Elektrotechnik vielfach zur Anwendung kommt. Die Variante nach den Fig. 4 bis 6 hat den Vorteil, dass das Gehäuse auch dann noch montiert werden kann, wenn das Anschlussgelenk 7 bereits mit der Kolbenstange 5 verbunden ist.The
Claims (16)
dadurch gekennzeichnet,
dass die Aufnahme (15) für die Sensoreinrichtung (13) Bestandteil eines außerhalb des Zylinders (3) befestigten Gehäuses (11) ist.Piston-cylinder unit (1), comprising a cylinder (3) in which a piston rod (5) is guided axially movable, with a sensor device (13) which detects the movement behavior of the piston rod (5), wherein the sensor device (13) in a receptacle (15) is arranged and can perform an adjusting movement in the direction of the piston rod,
characterized,
in that the receptacle (15) for the sensor device (13) is part of a housing (11) fastened outside the cylinder (3).
dadurch gekennzeichnet,
dass die Sensoreinrichtung (13) über ein Drehgelenk (35) in dem Gehäuse (11) gelagert ist und um dieses Drehgelenk (35) eine Schwenkbewegung in Richtung der Kolbenstange (5) ausführt.Piston-cylinder unit according to claim 1,
characterized,
in that the sensor device (13) is arranged in the housing (11) via a pivot (35). is mounted and about this pivot (35) performs a pivoting movement in the direction of the piston rod (5).
dadurch gekennzeichnet,
dass das Drehgelenk (35) außenrandseitig am Gehäuse (11) ausgeführt ist.Piston-cylinder unit according to claim 2,
characterized,
in that the rotary joint (35) is designed on the outer edge of the housing (11).
dadurch gekennzeichnet,
dass die Schwenkbewegung von einer Feder (37; 67) unterstützt wird.Piston-cylinder unit according to claim 2,
characterized,
that the pivoting movement is supported by a spring (37; 67).
dadurch gekennzeichnet,
dass das Gehäuse (11) eine Abstützungsfläche für die Feder (37) aufweist.Piston-cylinder unit according to claim 4,
characterized,
that the housing (11) has a support surface for the spring (37).
dadurch gekennzeichnet,
dass die Feder (37) als eine Blattfeder ausgeführt ist.Piston-cylinder unit according to claim 4,
characterized,
that the spring (37) is designed as a leaf spring.
dadurch gekennzeichnet,
dass die Abstützungsfläche von einer Nut (39) gebildet wird.Piston-cylinder unit according to claim 5,
characterized,
in that the support surface is formed by a groove (39).
dadurch gekennzeichnet,
dass die Sensoreinrichtung (13) einen Träger (17) aufweist, der einteilig mit der Feder (39) ausgeführt ist.Piston-cylinder unit according to claim 4,
characterized,
in that the sensor device (13) has a carrier (17) which is designed in one piece with the spring (39).
dadurch gekennzeichnet,
dass der Träger (17) aus einem Kunststoff besteht.Piston-cylinder unit according to claim 8,
characterized,
that the carrier (17) consists of a plastic.
dadurch gekennzeichnet,
dass das Gehäuse (11) einen Elastomerkörper (67) trägt, der als Feder (39) auf die Sensoreinrichtung (13) einwirkt.Piston-cylinder unit according to claim 4,
characterized,
that the housing (11) carries an elastomer body (67) which acts as a spring (39) to the sensor means (13).
dadurch gekennzeichnet,
dass ein gehäuseseitiges Lagerteil (27) einen Längsschlitz (29) zur radialen Montagebewegung eines Lagerteils (31) der Sensoreinrichtung (13) aufweist, wobei das Lagerteil (31) über mindestens eine seitliche Abflachung (33) in einer definierten Montageposition in das gehäuseseitige Lagerteil (27) montierbar ist.Piston-cylinder unit according to claim 2,
characterized,
that a housing-side bearing part (27) has a longitudinal slot (29) for radial mounting movement of a bearing part (31) of the sensor device (13), wherein the bearing part (31) via at least one lateral flattening (33) in a defined mounting position in the housing-side bearing part ( 27) can be mounted.
dadurch gekennzeichnet,
dass die Sensoreinrichtung (13) eine Platine (19) mit einem in Richtung der Kolbenstange (5) abgewinkelten Abschnitt (43) aufweist, auf der der Sensor (41) angeordnet ist.Piston-cylinder unit according to claim 1,
characterized,
in that the sensor device (13) has a printed circuit board (19) with a direction in the direction of Piston rod (5) angled portion (43), on which the sensor (41) is arranged.
dadurch gekennzeichnet,
dass das Gehäuse (11 a; 11 b) radial teilbar ausgeführt ist.Piston-cylinder unit according to claim 1,
characterized,
that the housing (11 a; 11 b) is designed to be radially divisible.
dadurch gekennzeichnet,
dass das gehäuseseitige Lagerteil (27) eine Axialsicherung (69) für die Sensoreinrichtung (13) aufweist.Piston-cylinder unit according to claim 1,
characterized,
that the housing-side bearing part (27) has an axial securing means (69) for the sensor means (13).
dadurch gekennzeichnet,
dass am Zylinder (3) des Kolben-Zylinderaggregates (1) eine Halterung (25) für eine Zugsicherung eines Kabelsatzes (21) der Sensoreinrichtung (13) befestigt ist.Piston-cylinder unit according to claim 1,
characterized,
in that on the cylinder (3) of the piston-cylinder assembly (1) a holder (25) for a train protection of a cable set (21) of the sensor device (13) is attached.
dadurch gekennzeichnet,
dass das Lagerteil (31) der Sensoreinrichtung (13) eine Kabelführung für einen Kabelsatz (21) der Sensoreinrichtung (13) aufweist.Piston-cylinder unit according to claim 1,
characterized,
that the bearing part (31) has a cable guide for a cable set (21) of the sensor device (13) of the sensor device (13).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005059984A DE102005059984A1 (en) | 2005-12-13 | 2005-12-13 | Piston-cylinder assembly, has retainer for sensor device which is component part of housing fixed on outside of cylinder whereby sensor device is supported in housing by swiveling joint |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1798422A2 true EP1798422A2 (en) | 2007-06-20 |
EP1798422A3 EP1798422A3 (en) | 2009-08-12 |
EP1798422B1 EP1798422B1 (en) | 2011-10-26 |
Family
ID=37864507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06024877A Not-in-force EP1798422B1 (en) | 2005-12-13 | 2006-12-01 | Sensor device for a piston-cylinder device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1798422B1 (en) |
AT (1) | ATE530775T1 (en) |
DE (1) | DE102005059984A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114323447B (en) * | 2022-03-10 | 2022-05-27 | 浙江华朔科技股份有限公司 | A leakproofness detects shutoff frock for aluminum alloy housing |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0271878A2 (en) | 1986-12-16 | 1988-06-22 | Kayaba Kogyo Kabushiki Kaisha | Stroke sensor for a fluid-power cylinder |
WO2004005748A1 (en) | 2002-07-02 | 2004-01-15 | Continental Teves Ag & Co. Ohg | Shock absorber and assembly for recording shock absorber displacement |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1151011A (en) * | 1997-07-30 | 1999-02-23 | Smc Corp | Position detecting sensor mounting tool for hydraulic cylinder |
DE20106298U1 (en) * | 2001-04-10 | 2001-06-21 | Festo Ag & Co | linear actuator |
DE20211518U1 (en) * | 2002-07-13 | 2002-09-12 | Festo Ag & Co | Position sensor designed as a Hall sensor |
DE10242266A1 (en) * | 2002-09-12 | 2004-03-25 | Continental Teves Ag & Co. Ohg | Magnetoresistance position signal generator integrated into main brake cylinder has sensor in housing of adapter that can be varied in position at least during mounting of sensor on main cylinder |
US7162947B2 (en) * | 2003-12-19 | 2007-01-16 | Caterpillar Inc | Mount for cylinder position sensor |
-
2005
- 2005-12-13 DE DE102005059984A patent/DE102005059984A1/en not_active Ceased
-
2006
- 2006-12-01 AT AT06024877T patent/ATE530775T1/en active
- 2006-12-01 EP EP06024877A patent/EP1798422B1/en not_active Not-in-force
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0271878A2 (en) | 1986-12-16 | 1988-06-22 | Kayaba Kogyo Kabushiki Kaisha | Stroke sensor for a fluid-power cylinder |
WO2004005748A1 (en) | 2002-07-02 | 2004-01-15 | Continental Teves Ag & Co. Ohg | Shock absorber and assembly for recording shock absorber displacement |
Also Published As
Publication number | Publication date |
---|---|
DE102005059984A1 (en) | 2007-06-14 |
EP1798422A3 (en) | 2009-08-12 |
EP1798422B1 (en) | 2011-10-26 |
ATE530775T1 (en) | 2011-11-15 |
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