EP1249620B1 - Positionsensor für Linearantrieb - Google Patents
Positionsensor für Linearantrieb Download PDFInfo
- Publication number
- EP1249620B1 EP1249620B1 EP02006141A EP02006141A EP1249620B1 EP 1249620 B1 EP1249620 B1 EP 1249620B1 EP 02006141 A EP02006141 A EP 02006141A EP 02006141 A EP02006141 A EP 02006141A EP 1249620 B1 EP1249620 B1 EP 1249620B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- linear drive
- housing
- connection device
- drive according
- housing cover
- 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 - Fee Related
Links
Images
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
- 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 linear drive, with a housing, the one tubular middle part and two on the front arranged housing cover contains, arranged in the housing Position detection means and with one in the area placed at least one housing cover, in structural unit electromechanical trained with the position detection means Connection device for releasably connecting a from the side on the outside to a side surface oriented sideways of the housing cover brought up electrical conductor arrangement to the position detection means, the electromechanical Connection device without overhang regarding the side surface oriented completely sunk in a receiving recess open to this outer surface of the housing cover is housed.
- a fluid-actuated linear drive known from FR-A-2794236 This type contains an elongated housing with a front arranged housing covers and one housed in the housing Piston that acts on a linear motion by fluid can be initiated. The linear movement leaves grab on a force tapping part from the outside to to move any object.
- the linear drive equipped with position detection means which via a Electrical conductor arrangement with a cable shape external electronic evaluation device can be connected can.
- position detection means Electromechanical plunging centrally into the housing cover Connection device provided, which is recessed in a open side surface of the housing cover Well, the one with the electrical conductor arrangement plug inserted can be.
- Linear drives are the position detection means in housed the wall of the housing of the linear drive.
- the electrical contact is made from the side of the linear drive forth in the area of a housing cover from which one connection unit connected to the position detection means protrudes.
- the Electromechanical connection device in the area of the sideways oriented outer surface of the housing cover, being arranged flush with this lateral outer surface and that the position detection means starting from the housing cover in a recess in the wall of the Middle part are inserted.
- the electromechanical connection device is thus still completely embedded in the housing cover, so that the The transverse dimensions of the linear drive remain compact. About that in addition, the ease of cleaning is also improved, so that the linear drive for use in the food industry is well suited.
- the electromechanical connection device is for the electrical contacting one with the electrical conductor arrangement connected connecting part expediently equipped with plug contacts.
- the plug contacts are preferred designed as pins, the one to be connected Connection part is designed like a socket.
- the one for mechanical fixation with the electrical Means arrangement connected connecting part serving means the electromechanical connection device preferably contain a screw thread, being a particularly useful Design provides an internal thread.
- the latter can be easy to integrate into the housing cover.
- thread sizes smaller than M8 are relatively easy in this way feasible, for example M6 thread.
- the position detection means can be, for example, from a Position sensor be formed. An embodiment would also be possible as a position measuring system.
- the linear drive is preferably a fluid-actuated linear drive, with a through in the housing Fluid power adjustable piston is arranged.
- the piston is equipped with actuators that are capable of are to operate the position detection means without contact.
- a fluid-actuated linear drive 1 is shown in the drawing out, which has an elongated housing 2, which a tubular middle part 3 and two end faces on the middle part 3 arranged housing covers 4, 5 contains.
- housing 2 Inside the housing 2 is one in the direction of Longitudinal axis 6 of the housing 2 extending piston receiving space 7. It is on the side of the middle part 3 and the front of the two housing covers 4, 5 limited.
- the piston receiving space 7 is arranged by one in it Slidable piston 8 axially divided into two working spaces 9, 10.
- Each work room is located in the neighboring one Housing cover 4, 5 running fluid channel 12, 13 in connection, over the compressed air or another fluidic actuation medium can be fed or dissipated to the Piston 8 for a linear movement in one or the other Direction.
- the linear movement of the piston 8 can be outside the housing 2 on a force-tapping member that is motion-coupled to the piston 8 14 can be tapped. In this way, a any component can be moved and / or positioned.
- the Linear drive 1 of the exemplary embodiment is a working cylinder, wherein the force tap member 14 as with the piston 8th firmly connected piston rod is formed, at least one of the housing cover 4 slidably guided under seal penetrated to the outside.
- One arranged on the housing cover 4 Guide device and sealing device are schematically indicated at 15.
- the linear drive is equipped with position detection means 16, that are capable of one or more axial positions to detect the piston 8.
- position detection means 16 that are capable of one or more axial positions to detect the piston 8.
- the position detection means 16 could also be so be designed so that they each have several axial positions of the piston 8 can capture, in particular an embodiment can act as a path measuring system with which at least along a certain distance, every momentary position of the piston 8 can be detected.
- the position detection means 16 are completely inside the housing 2 housed. Are in the embodiment it is formed by a rod-shaped position sensor, which by the end face of the middle part facing the housing cover 4 3 forth in a receiving recess 17 of this middle part 3 is inserted.
- the position detection means 16 contain in the embodiment specifically a rod-like housing with housed in it Detection means that are not in the drawing are shown in more detail.
- the detection means can from Piston 8 arranged actuating means 18 actuated without contact be, especially if the latter in one of the detection means reach radially within the opposite position.
- the actuating means 18 exist in the embodiment from a permanent magnetic ring element, the detection means form a so-called reed switch, the is actuated by the magnetic force.
- the position detection means 16 and the actuating means 18 possible.
- the electrical conductor arrangement 22 includes one or more electrical conductors - In the embodiment, two pieces - and is special trained like a cable. In Fig. 1, an end region is the electrical conductor assembly 22 visible, on which an electromechanical Connection part 23 is arranged.
- connection part 23rd The connection part 23rd
- a major advantage of the arrangement described is in that the electromechanical connection device 24 without overhang with respect to the sideways oriented outer surface 25 completely sunk in the housing cover 4 is.
- a flush installation is provided, which has the advantage that there is no deepening, in the later operation, with the connector connected 23, could deposit contaminants.
- the electromechanical connection device 24 is as a unit with the position detection means 16 trained. Therefore, a common, unified Mount on linear actuator 1. It is special possible the housing of the position detection means 16 and the housing of the electromechanical connection device 24 train in one piece.
- the electromechanical connection device 24 is in one to the laterally oriented outer surface 25 of the housing cover 4 accommodated open recess 26 of the housing cover 4. This has one pointing towards the middle part 3 Opening 27 through which the position detection means 16 protrude can.
- the electromechanical connection device 24 has the Embodiment of a in the receiving recess 26th seated socket-like housing part 28, the inner circumference with a screw thread 32 designed as an internal thread Is provided. Compared to a design with an external thread the chosen design enables a simpler one Production and assembly with very compact dimensions.
- connection part provided on the electrical conductor arrangement 22 23 is equipped with a rotatable screw element 33, which has an external thread with which it can be used the screw thread 32 of the connection device 24 from the outside can be screwed in here to achieve the desired mechanical fastening to obtain.
- connection of the connection part 23 to the connection device 24 is a combined plug-screw process.
- the electrical connection is made by a plug-in process, the mechanical connection by a screwing process.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Transmission Devices (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
- Fig. 1
- eine schematische Darstellung des erfindungsgemäßen Linearantriebes in einer Seitenansicht und
- Fig. 2
- einen Endbereich des Linearantriebes aus Fig. 1 im Längsschnitt gemäß Schnittlinie II-II.
Claims (8)
- Linearantrieb, mit einem Gehäuse (2), das ein rohrförmiges Mittelteil (3) und zwei stirnseitig daran angeordnete Gehäusedeckel (4, 5) enthält, mit im Gehäuse (2) angeordneten Positionserfassungsmitteln (16) und mit einer im Bereich mindestens eines Gehäusedeckels (4, 5) platzierten, in Baueinheit mit den Positionserfassungsmitteln (16) ausgebildeten elektromechanischen Anschlusseinrichtung (24) zum lösbaren Anschließen einer von seitlich außen her an eine seitwärts orientierte Außenfläche (25) des Gehäusedeckels (25) herangeführten elektrischen Leiteranordnung (22) an die Positionserfassungsmittel (16), wobei die elektromechanische Anschlusseinrichtung (24) ohne Überstand bezüglich der seitwärts orientierten Außenfläche (25) vollständig versenkt in einer zu dieser Außenfläche (25) hin offenen Aufnahmevertiefung (26) des Gehäusedeckels (4) untergebracht ist, dadurch gekennzeichnet, dass sich die elektromechanische Anschlusseinrichtung (24) im Bereich der seitwärts orientierten Außenfläche (25) des Gehäusedeckels (25) befindet, wobei sie bündig mit dieser seitlichen Außenfläche (25) angeordnet ist, und dass die Positionserfassungsmittel (16) ausgehend vom Gehäusedeckel (4, 5) in eine Aufnahmevertiefung (17) in der Wandung des Mittelteils (3) eingesteckt sind.
- Linearantrieb nach Anspruch 1, dadurch gekennzeichnet, dass die elektromechanische Anschlusseinrichtung (24) über Steckkontakte (34) für die elektrische Kontaktierung eines mit der elektrischen Leiteranordnung (22) verbundenen Anschlussteils (23) verfügt.
- Linearantrieb nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die elektromechanische Anschlusseinrichtung (24) über ein Schraubgewinde (32) für die mechanische Befestigung eines mit der elektrischen Leiteranordnung (22) verbundenen Anschlussteiles (32) verfügt.
- Linearantrieb nach Anspruch 3, dadurch gekennzeichnet; dass das Schraubgewinde (32) ein Innengewinde ist.
- Linearabtrieb nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Schraubgewinde (32) ein kleiner als M8 ausgebildetes Gewinde ist, insbesondere ein M6-Gewinde.
- Linearantrieb nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Positionserfassungsmittel (16) von einem Positionssensor oder einem Wegemesssystem gebildet sind.
- Linearantrieb nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass im Gehäuse (2) ein Kolben (8) linear verschiebbar untergebracht ist, der Betätigungsmittel (18) zur Aktivierung der Positionserfassungsmittel (16) aufweist.
- Linearantrieb nach einem der Ansprüche 1 bis 7, gekennzeichnet durch eine Ausgestaltung als fluidbetätigter Linearantrieb.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20106298U | 2001-04-10 | ||
DE20106298U DE20106298U1 (de) | 2001-04-10 | 2001-04-10 | Linearantrieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1249620A1 EP1249620A1 (de) | 2002-10-16 |
EP1249620B1 true EP1249620B1 (de) | 2004-05-12 |
Family
ID=7955606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02006141A Expired - Fee Related EP1249620B1 (de) | 2001-04-10 | 2002-03-19 | Positionsensor für Linearantrieb |
Country Status (3)
Country | Link |
---|---|
US (1) | US6533596B2 (de) |
EP (1) | EP1249620B1 (de) |
DE (2) | DE20106298U1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20014353U1 (de) * | 2000-08-19 | 2000-12-07 | Festo Ag & Co | Linearantrieb |
DE20116564U1 (de) * | 2001-10-09 | 2002-01-17 | Festo Ag & Co | Positionserfassungsvorrichtung |
US7552671B2 (en) * | 2002-01-04 | 2009-06-30 | Parker-Hannifin Corporation | Cylinder with fiber optical position sensing device and method |
AU2003202877A1 (en) * | 2002-01-04 | 2003-07-24 | Parker Hannifin Corporation | Cylinder with optical sensing device and method |
DE10329045B4 (de) * | 2003-06-27 | 2006-04-20 | Rexroth Mecman Gmbh | Einrichtung zur Ermittlung mindestens einer Endlagenposition eines Antriebsgliedes, insbesondere eines druckmittelbetriebenen Linear- oder Drehantriebes |
DE102005059984A1 (de) * | 2005-12-13 | 2007-06-14 | Zf Friedrichshafen Ag | Sensoreinrichtung für ein Kolben-Zylinderaggregat |
EP2277012B1 (de) | 2008-05-16 | 2014-07-30 | Parker-Hannifin Corporation | Sonde zur bestimmung einer absoluten position einer zylinderstange |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1196708A (en) * | 1982-05-10 | 1985-11-12 | Eugenio Espiritu Santo | Position sensing cylinder |
JPH02259403A (ja) * | 1989-03-30 | 1990-10-22 | Kubota Ltd | 静電容量式のストロークセンサ |
US5378882A (en) * | 1992-09-11 | 1995-01-03 | Symbol Technologies, Inc. | Bar code symbol reader with locking cable connector assembly |
DE29508517U1 (de) * | 1995-05-23 | 1995-08-10 | Festo Kg, 73734 Esslingen | Kolbenstangenloser Linearantrieb |
DE29816156U1 (de) * | 1998-09-09 | 1998-11-26 | Festo AG & Co, 73734 Esslingen | Linearantrieb |
FR2794236B1 (fr) * | 1999-05-26 | 2006-06-16 | Serta | Dispositif permettant de connaitre la position et de mesurer les deplacements du piston ou de la tige de piston dans la chambre d'un verin du type comprenant un capteur potentiometrique rectiligne lineaire |
-
2001
- 2001-04-10 DE DE20106298U patent/DE20106298U1/de not_active Expired - Lifetime
-
2002
- 2002-03-19 EP EP02006141A patent/EP1249620B1/de not_active Expired - Fee Related
- 2002-03-19 DE DE50200422T patent/DE50200422D1/de not_active Expired - Lifetime
- 2002-03-29 US US10/112,524 patent/US6533596B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE20106298U1 (de) | 2001-06-21 |
US6533596B2 (en) | 2003-03-18 |
EP1249620A1 (de) | 2002-10-16 |
DE50200422D1 (de) | 2004-06-17 |
US20020146939A1 (en) | 2002-10-10 |
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