EP0840333B1 - Dispositif de commutation avec capteur de déplacement - Google Patents
Dispositif de commutation avec capteur de déplacement Download PDFInfo
- Publication number
- EP0840333B1 EP0840333B1 EP97110616A EP97110616A EP0840333B1 EP 0840333 B1 EP0840333 B1 EP 0840333B1 EP 97110616 A EP97110616 A EP 97110616A EP 97110616 A EP97110616 A EP 97110616A EP 0840333 B1 EP0840333 B1 EP 0840333B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- switching device
- displacement sensor
- fact
- spring
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1607—Armatures entering the winding
Definitions
- the invention relates to a switching device in the form of a Switching magnet with a displacement sensor device for monitoring the Position of a switching part of the switching device with the displacement sensor can be coupled via a releasable connecting device.
- switching devices with displacement transducer are available in a variety of forms on the market available, the switching device a so-called DC or AC switching magnet represents.
- the switching part Via a coil part of the switching device the switching part can usually be in the form of a tubular bolt when the coil is electrically actuated, move within the switching magnet, for example to trigger a switching operation on a fluid valve or the like.
- the displacement sensor device in modern systems not only record the end positions of the switching part, but also continuously Intermediate positions, so that via an electronic evaluation unit the switching state of the switching device monitor itself in every switching state leaves.
- the switching part in the form of the switching pin has a type Dipstick, which can be moved together with the switching part and the Inductance of a coil arrangement within the displacement sensor device changed, depending on its depth of penetration into the coil arrangement, so that you get information about the position of the switching part.
- connection device For the coupling of the switching device with the displacement sensor device a detachable connection device is provided which in the prior art (DE-U-92 08939) There are grub screws or the like, the outer circumferential side of the displacement sensor device arranged in associated recesses in the switching device intervention.
- the connection device is expensive in that Manufacture and complicates the assembly of the entire device, because for screwing in the grub screws the components switching device and displacement sensor must be precisely positioned to each other.
- a bow spring is known with two resilient mutually movable leg pieces, which serves a switching magnet on an actuatable component, for example in the form of a hydraulic Switching valve or the like. Specify, with the relevant operating part in engages the switching magnet and from the outside via the bow spring on this is set.
- the bow spring extends through the housing of the switching magnet and encompasses the operating part.
- Wear parts within the switching magnet also quickly after loosening the bow spring replace the switching device. Monitoring the position of the Switching or actuating part of the known switching device not provided.
- the object of the invention based on creating a switching device with a displacement sensor device, that simply and inexpensively connect to one another to let.
- a switching device with a displacement sensor device solves this problem according to the features of claim 1.
- the connecting device has a resilient connecting part which has a device reaches through and encompasses the other device, can only be a component in the form of the spring-elastic connecting part, the coupling of Reach switching device with displacement transducer. This is not just inexpensive, but the connection can also be made without precise pre-positioning of the respective device to each other easily reach and solve again.
- the via the spring-elastic connecting part caused coupling leads to a secure axial connection of the Devices with each other, causing no accidental loosening the connection can come.
- the connecting part is a Bow spring with two resiliently movable leg pieces, which encompass the switching device, preferably the connecting part is formed from a non-magnetic spring steel wire.
- the displacement sensor device preferably has a groove-shaped recess for the flush engagement of the bow spring
- the leg pieces at least on their mutually facing inner sides an arcuate Receiving piece for receiving a rotationally symmetrical fixed part have the switching device, and this fixing part via a wedge-shaped Recess has a play-free coupling of switching device guaranteed with displacement sensor.
- the locking part along its outer circumference have a securing part, in particular in the form of knurling, so that after intervention of the connecting part in the displacement sensor device a secure positive connection both in the radial and in the axial direction given is.
- the switching device designated as a whole by 10 according to FIG. 1 has a bobbin 12 made of plastic material.
- the bobbin 12 has two ring-shaped flanges at the ends, between which there is the winding package 14 extends a conductor, which is shown only schematically in FIG. 1 is.
- a so-called pole tube 16 is guided in the coil former 10, in which again arranged in a longitudinally movable manner against a bolt-shaped switching part 18 the spring force of a compression spring 20 is movable.
- an actuating rod 22 is arranged in the middle, whereas on opposite end of the switching part 18 this also in the middle Measuring rod 24 has.
- the actuating rod 22 is used to control one Valve body, whereas the measuring rod 24 checking the switching position of the switching part 18 and thus the actuating rod 22, which results in turn provide conclusions about the control status of the valve.
- the switching device 10 also has an electrical connection point 26 on in the form of a contact plug for connection to a controllable Power source (not shown).
- a controllable Power source not shown.
- the relevant structure of a switching device 10 is known in the art. If the winding package 14 of the Coil body 12 is electrically excited under the influence of the resulting Field seen in the direction of FIG. 1, the switching part 18 against the Return force of the compression spring 20 to the left, against the compression spring in the valve, moves, the actuating rod 22 retracts and that around the travel of the switching part 18 in a corresponding manner to the right.
- the measuring rod 24 is radially surrounded by a receiving sleeve 34, the one represents pressure-tight pipe and on the outer circumference a contact surface for the Coil system 28 forms that on the receiving sleeve 34 against the spring force an adjusting spring 36 can be pushed on. Via a hexagon nut 38 and a spacer sleeve 40 can then - also by the customer - a "mechanical" Carry out zero point adjustment for the displacement transducer 30.
- the receiving sleeve 34 is at its end facing the environment completed and is dimensioned so long that the measuring rod 24 in each Position of the switching part 18 over a free travel length within the receiving sleeve 34 has.
- the receiving sleeve 34 has a widening 42, via which it is fixed a sleeve-like fixing part 44 is connected along the inside thereof.
- the fixing part 44 which serves as a closure part, is fixed to the pole tube 16 connected and essentially part of the same.
- the fixing part 44 has a support surface for the compression spring 20 already mentioned. Furthermore, it has a Center recess for free passage of the measuring rod 24 of the switching part 18.
- On the outer circumferential side there are 44 round seals in the ring grooves of the fixing part inserted.
- the fixed part 44 is the pole tube 16 on its towards the displacement sensor device 30 end facing with a bead.
- the fixed part forms 44 a contact surface for the adjusting spring 36 and a shoulder is a Spacer tube 46 of the displacement sensor device 30 in contact with the fixing part 44.
- the fixing part 44 is of a push-on sleeve 48 of the displacement sensor device 30 includes, which also partially includes the pole tube 16 radially, and connects to the actual switching device 10 at the end. Furthermore there is a push-on sleeve 48 forming a displacement transducer housing Annular channel for a sealing ring 50 between pole tube 16 and push-on sleeve 48 free.
- the push-on sleeve 48 is provided on the outer circumference with recessed grips 52 the handling, in particular the plugging in of the displacement sensor device 30 facilitate assembly on the protruding parts of the switching device 10.
- Fixing part 44 has a wedge-shaped recess 54, the inclination of the Wedge of the recess 54 is transverse to the direction of movement of the switching part 18 extends and wherein the free opening cross-section extends in the direction of Switching part 18 reduced.
- a play-free connection of switching device 10 with displacement sensor 30 in the form of a connecting device of a resilient connecting part 56, as is detailed in the Fig. 2 is shown.
- the resilient connecting part 56 shown in FIG. 2 exists from a bow spring 58 with two resiliently movable leg pieces 60, the switching device 10 at the location of the rotationally symmetrical Reach around fixing part 44 approximately in the center.
- the connecting part 56 is off a non-magnetic spring steel wire. However, it can also come from be made of a magnetizable spring steel wire.
- the bow spring 58 see FIG. 2
- the displacement sensor 30 has a groove-shaped recess 62.
- the two leg pieces have 60 each have an arcuate on their mutually facing inner sides Receiving piece 64 on for engagement in the wedge-shaped recess 54 of the fixing part 44.
- the free ends of the bow spring 58 are, in particular 2 shows, spread out approximately at right angles and thus have a projection on the outer circumferential side of the rotationally symmetrical Fixing part 44 on.
- the leg pieces 56 are moreover via an arcuate central piece 66 of the bow spring 58 with each other in Connection.
- the curvature of the arcuate receiving pieces 64 correspond essentially the outer circumferential curvature of the fixing part 44.
- the fixing part 44 furthermore has an axial direction along its outer circumference
- This is in addition to an axial Securing also provided an anti-rotation device, on the one hand the adjustment when placing the push-on sleeve 48 and thus the displacement sensor device 30 facilitated on the switching device 10 and the other a radial Guaranteed position in later operation.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)
Claims (6)
- Dispositif de commutation, sous la forme d'un aimant de commutation avec un dispositif de capteur de déplacement pour surveiller la position d'un élément de commutation (18) du dispositif de commutation (10), qui peut être couplé avec le dispositif de capteur de déplacement (30) par l'intermédiaire d'un dispositif de connexion, caractérisé en ce que le dispositif de connexion présente un élément de connexion déformable (56) qui traverse un dispositif (30) et entoure l'autre (10).
- Dispositif de commutation selon la revendication 1, caractérisé en ce que l'élément de connexion (56) est un ressort en étrier (58) avec deux pièces de branche (60) mutuellement mobiles de façon déformable qui entourent le dispositif de commutation (10).
- Dispositif de commutation selon la revendication 1 ou 2, caractérisé en ce que l'élément de connexion (56) est réalisé en fil d'acier à ressorts.
- Dispositif de commutation selon la revendication 2 ou. 3, caractérisé en ce que le dispositif de capteur de déplacement (30) présente un creux (62) en forme de rainure pour l'engagement positif du ressort en étrier (58) et en ce que les pièces de branche (60) présentent au moins sur leurs faces intérieures opposées respectivement une pièce de réception en arc (64) pour recevoir un élément de fixation à symétrie de révolution (44) du dispositif de commutation (10).
- Dispositif de commutation selon la revendication 4, caractérisé en ce que l'élément de fixation (44) présente un creux conique (54), en ce que l'inclinaison du cône du creux (54) s'étend transversalement à la direction de mouvement de l'élément de commutation (18), et en ce que la section transversale d'ouverture libre diminue dans la direction de l'élément de commutation (18).
- Dispositif de commutation selon la revendication 5,
caractérisé en ce que l'élément de fixation (44) présente, suivant sa circonférence extérieure, un élément de protection (68) pour la connexion de maintien avec le dispositif de capteur de déplacement (30).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19643976 | 1996-10-31 | ||
DE19643976A DE19643976A1 (de) | 1996-10-31 | 1996-10-31 | Schaltvorrichtung mit Wegaufnehmervorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0840333A1 EP0840333A1 (fr) | 1998-05-06 |
EP0840333B1 true EP0840333B1 (fr) | 2001-07-11 |
Family
ID=7809711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97110616A Expired - Lifetime EP0840333B1 (fr) | 1996-10-31 | 1997-06-28 | Dispositif de commutation avec capteur de déplacement |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0840333B1 (fr) |
DE (2) | DE19643976A1 (fr) |
ES (1) | ES2160284T3 (fr) |
PT (1) | PT840333E (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19924767B4 (de) * | 1999-05-29 | 2004-09-23 | Danfoss A/S | Elektromagnetisches Stellglied |
DE102008056377A1 (de) | 2008-11-08 | 2010-05-12 | Robert Bosch Gmbh | Wegaufnehmer |
DE102009041159B4 (de) | 2009-09-14 | 2022-12-08 | Magnet-Schultz Gmbh & Co. Kg | Wegsensoreinheit und Anordnung mit der Wegsensoreinheit |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4805870A (en) * | 1983-02-03 | 1989-02-21 | Emerson Electric Co. | Coil retainer for solenoid |
DE3401564A1 (de) * | 1984-01-18 | 1985-07-25 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Einrichtung zum vereinigen eines staubbeutels mit dem ausblasstutzen eines motorisch angetriebenen schwingschleifers |
DE3506053A1 (de) * | 1985-02-21 | 1986-08-21 | Mannesmann Rexroth GmbH, 8770 Lohr | Schaltmagnet fuer gleichstrom zum antrieb eines ventilgliedes |
US4683453A (en) * | 1985-11-25 | 1987-07-28 | Automatic Switch Company | Solenoid actuator with fastener |
DE9208939U1 (de) * | 1992-07-03 | 1992-09-17 | Elektroteile GmbH, 78333 Stockach | Schaltmagnet mit induktivem Stellungsgeber |
-
1996
- 1996-10-31 DE DE19643976A patent/DE19643976A1/de not_active Withdrawn
-
1997
- 1997-06-28 PT PT97110616T patent/PT840333E/pt unknown
- 1997-06-28 DE DE59704004T patent/DE59704004D1/de not_active Expired - Fee Related
- 1997-06-28 EP EP97110616A patent/EP0840333B1/fr not_active Expired - Lifetime
- 1997-06-28 ES ES97110616T patent/ES2160284T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0840333A1 (fr) | 1998-05-06 |
DE59704004D1 (de) | 2001-08-16 |
ES2160284T3 (es) | 2001-11-01 |
PT840333E (pt) | 2001-12-28 |
DE19643976A1 (de) | 1998-05-07 |
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