EP1098180A1 - Vorrichtung zur Wegmessung - Google Patents
Vorrichtung zur Wegmessung Download PDFInfo
- Publication number
- EP1098180A1 EP1098180A1 EP00121126A EP00121126A EP1098180A1 EP 1098180 A1 EP1098180 A1 EP 1098180A1 EP 00121126 A EP00121126 A EP 00121126A EP 00121126 A EP00121126 A EP 00121126A EP 1098180 A1 EP1098180 A1 EP 1098180A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deformable part
- transmission device
- displacement
- feeler
- compression 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
- H01H13/063—Casings hermetically closed by a diaphragm through which passes an actuating member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/052—Strain gauge
Definitions
- the invention relates to a device for measuring distance the preamble of claim 1.
- Such a device has a mechanical touch device, a sensor and a transmission device, which is a linear displacement of the probe on the Transmitter transmits.
- the object of the invention is to provide a device of this type create a simple and trouble-free structure having.
- This object is achieved in that the A transducer deformable by the transmission device Part with a sensor that is proportional to the deformation supplies electrical signal.
- the touch device which is the touching linear displacement detected by the transmission device with one of the displacement to be measured opposed mechanical bias.
- the Transmission device can be from a compressible medium, for example a spring or an incompressible medium, for example, a hydraulic fluid become.
- the transmission device in particular designed as a coil spring and the touch device can be a common have linear or axial guidance, this Guide can be rod-shaped and located inside the coil spring and a sleeve-shaped part of the feeler extends.
- the deformable part can be one with the Sensor interacting deformable surface that transverse to the direction of the from the transmission device transmitting shift expands.
- the deformable part can form the bottom of a measuring cell into which the transmission device is inserted.
- the transmission facility can have a transmission foot, which in essentially the entire bottom of the cup-shaped measuring cell covered and on its facing the deformable part Surface is convexly curved.
- the scanner is in preferably guided in an adapter.
- the Adapters can be plugged or screwed or other suitable connection connected to a component against which a displacement movement of another Component to be measured.
- the touch device comes here in contact with the component, the displacement of which is detected or should be measured. This can be, for example act a transmission part of a motor vehicle. From the linear or axial guidance of the probe device resulting Frictional forces have no effect on the measured variable. For example through self-calibration, the frictional forces be compensated.
- the adapter is suitably connected to a housing, in which the electronic evaluation device is arranged which is used to evaluate the sensor signals.
- This housing also provides protection against high-frequency Disturbances and is preferably designed so as described in DE 198 12 296 A1. This allows a gear switch when used in a transmission be formed.
- the device has a touch device 1, which in an adapter 10 guided in the axial direction is.
- the touch device 1 has a sleeve-shaped or cylindrical part, which is in the axial direction in Adapter 10 extends and also a probe with a Touch surface 13 to be scanned on a component to be monitored Plant is brought.
- the outer surface of the cylindrical Part of the touch device 1 can be connected to a corresponding one Guide surface of the adapter 10 as it can be seen from the figure.
- a cuff 8 which between the Probe and the adapter 10 is provided.
- a helical compression spring 6 is wound around this rod-shaped guide 5 .
- the helical compression spring 6 is supported at one end on a collar 14 of the feeler 1 from. It supports itself at its other end Helical compression spring 6 on a transmission foot 7.
- the Transfer foot 7 and the rod-shaped guide 5 are fixed or connected to each other with positive locking.
- a bias voltage is generated with which the feeler device is biased in the axial direction.
- a stop 17 on the inner wall of the Measuring cell 9 may be provided. This causes an axial displacement except for the block position of the helical compression spring 6 and a possible destruction or disproportionate deformation of a deformable part 4 to be explained prevented.
- the sensor 2 has the deformable part 4, for example in the form of a disc or membrane.
- a sensor e.g. in the form of one or more Resistor elements made of semiconductor material, for example Strain gauge that connects to a measuring bridge could be.
- the sensor can also be capacitive with the deformable Part 4 work together. With an axial displacement the feeler 1 is this via the compression spring 6 and transfer the transfer foot 7 to the deformable part 4.
- the deformation is detected by the sensor of the transmitter 2 and a signal proportional to the deformation.
- the deformation corresponds to the axial displacement of the feeler 1.
- a non-compressible can also be used for the transmission device 3 Medium, for example a hydraulic fluid are used, which is the axial displacement of the Forwarding device 1 and thereby the deformable part 4 deformed.
- Resulting in the axial displacement Frictional forces can e.g. B. by self-calibration with With the help of an evaluation electronics 12 are compensated. The Frictional forces then have no influence on the measurement signal.
- the deformable part 4 can be the bottom surface of a cup-shaped Form measuring cell 9.
- the measuring cell 9 has a circular cylindrical Recess in which the transfer foot 7 is inserted is.
- the outer diameter of the transfer foot 7 can about the inside diameter of the recess in the measuring cell 9 correspond.
- the deformable part 4 and the side wall the measuring cell 9 can be made in one piece.
- the deformable part 4 and the Measuring cell 9 made of a ceramic material.
- the sensor signals emitted by the sensor 2 are from the Evaluation electronics 12 evaluated and can be electrical Plug connection 15 are forwarded.
- the evaluation electronics and also the measuring cell 9 with the measuring sensor 2 are located in a housing 11, which in the way can be designed as described in DE 198 12 296 A1 is. This housing is a flawless Derivation of high-frequency interference without affecting the Sealing effect of seals 16 which are used to seal the Serve housing, achieved.
- the adapter 10 is located at the end of the housing 11.
- the adapter 10 is, as described in DE 198 12 296 A1, tight in the housing inserted.
- the adapter 10 can be firmly connected to a component, against which the displacement of another component is to be detected by means of the touch device 1.
- lanyards evenly distributed over a circumference which is a derivative of high-frequency electrical currents ensure from housing 11 to adapter 10, be provided as described in DE 198 12 296 A1.
- Dependent on from the displacement of the feeler 1 can by the sensor signals generated in the process after their evaluations various functions, e.g. Switching functions become.
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
- 1
- Tasteinrichtung
- 2
- Meßgeber
- 3
- Übertragungseinrichtung
- 4
- verformbares Teil
- 5
- Führung
- 6
- Druckfeder
- 7
- Übertragungsfuß
- 8
- Manschette
- 9
- Meßzelle
- 10
- Adapter
- 11
- Gehäuse
- 12
- Auswerteelektronik
- 13
- Tastfläche
- 14
- Bund
- 15
- elektrische Steckverbindung
- 16
- Dichtung
- 17
- Anschlag
Claims (20)
- Vorrichtung zur Wegmessung mit einer mechanischen Tasteinrichtung, einem Meßgeber und einer Übertragungseinrichtung, welche eine lineare Verschiebung der Tasteinrichtung auf den Meßgeber überträgt, dadurch gekennzeichnet, daß der Meßgeber (2) ein durch die Übertragungseinrichtung (3) verformbares Teil (4) mit einem Sensor aufweist, der ein der Verformung proportionales elektrisches Signal liefert.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Tasteinrichtung (1) durch die Übertragungseinrichtung (3) mit einer zur zu messenden Verschiebung entgegengesetzten mechanischen Vorspannung beaufschlagt ist.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Übertragungseinrichtung (3) und die Tasteinrichtung (1) eine gemeinsame lineare Führung (5) aufweisen.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das verformbare Teil (4) eine mit dem Sensor zusammenwirkende Fläche aufweist, die quer zur Richtung der von der Übertragungseinrichtung (3) übertragenen Verschiebung sich erstreckt.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das verformbare Teil (4) als dünne Scheibe oder Membran ausgebildet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Übertragungseinrichtung (3) einen am verformbaren Teil (4) anliegenden Übertragungsfuß (7) aufweist, der an der dem verformbaren Teil (4) zugewandten Seite eine konvex gekrümmte Fläche besitzt.
- Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Übertragungseinrichtung (3) ein die Verschiebung der Tasteinrichtung (1) auf den Übertragungsfuß (7) übertragendes kompressibles oder imkompressibles Medium aufweist.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das imkompressible Medium eine Hydraulikflüssigkeit ist.
- Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das kompressible Medium eine Druckfeder (6) ist.
- Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Führung (5) stabförmig ausgebildet ist und im Innern der als Schraubenfeder ausgebildeten Druckfeder (6) und einem hülsenförmigen Teil der Tasteinrichtung (1) liegt.
- Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Druckfeder (6) zwischen den Übertragungsfuß (7) und die Tasteinrichtung (1) gespannt ist.
- Vorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß das verformbare Teil (4) den Boden einer Meßzelle (9) bildet, in die der Übertragungsfuß (7) und die Übertragungseinrichtung (3) eingesetzt sind.
- Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß die Wand der Meßzelle (9) und das verformbare Teil (4) aus einem Formstück gebildet sind.
- Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß das Formstück der Meßzelle (9) aus einem Keramikmaterial gebildet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die lineare Verschiebung der Tasteinrichtung (1) vor einer Blockstellung der Druckfeder (6) angehalten ist.
- Vorrichtung nach Anspruch 15, dadurch gekennzeichnet, daß die lineare Verschiebung der Tasteinrichtung (1) durch einen Anschlag (17) angehalten ist.
- Vorrichtung nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß der Sensor von einem oder mehreren Dehnungsmeßstreifen gebildet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Tasteinrichtung (1) in einem Adapter (10) verschiebbar geführt ist.
- Vorrichtung nach einem der Ansprüche 1 bis 18, dadurch gekennzeichnet, daß durch Kalibrierung aus der Linearverschiebung der Tasteinrichtung (1) resultierende Reibungskräfte kompensierbar sind.
- Vorrichtung nach einem der Ansprüche 1 bis 19, dadurch gekennzeichnet, daß sie als Getriebeschalter ausgebildet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999153617 DE19953617A1 (de) | 1999-11-08 | 1999-11-08 | Vorrichtung zur Wegmessung |
| DE19953617 | 1999-11-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1098180A1 true EP1098180A1 (de) | 2001-05-09 |
| EP1098180B1 EP1098180B1 (de) | 2007-10-03 |
Family
ID=7928248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20000121126 Expired - Lifetime EP1098180B1 (de) | 1999-11-08 | 2000-09-28 | Vorrichtung zur Wegmessung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1098180B1 (de) |
| DE (2) | DE19953617A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007016536A1 (de) | 2007-04-05 | 2008-10-16 | Robert Seuffer Gmbh & Co. Kg | Vorrichtung zur Messung eines in einem Druckmedium herrschenden Druckes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014206771B4 (de) | 2014-04-08 | 2023-04-27 | Inelta Sensorsysteme Gmbh & Co. Kg | Linearer Messtaster |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2558256A1 (fr) * | 1984-01-13 | 1985-07-19 | Brachet Pierre | Detecteur avertisseur d'un defaut de pression d'un liquide ou d'un gaz |
| EP0440011A2 (de) * | 1990-02-02 | 1991-08-07 | Pfister Messtechnik GmbH | Kraft-bzw. Druckmessvorrichtung |
| DE19812296C1 (de) * | 1998-03-20 | 1999-11-04 | Robert Seuffer Gmbh & Co | Vorrichtung zur Ableitung hochfrequenter elektrischer Ströme von einem zylindrischen Gehäuse |
-
1999
- 1999-11-08 DE DE1999153617 patent/DE19953617A1/de not_active Ceased
-
2000
- 2000-09-28 DE DE50014691T patent/DE50014691D1/de not_active Expired - Lifetime
- 2000-09-28 EP EP20000121126 patent/EP1098180B1/de not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2558256A1 (fr) * | 1984-01-13 | 1985-07-19 | Brachet Pierre | Detecteur avertisseur d'un defaut de pression d'un liquide ou d'un gaz |
| EP0440011A2 (de) * | 1990-02-02 | 1991-08-07 | Pfister Messtechnik GmbH | Kraft-bzw. Druckmessvorrichtung |
| DE19812296C1 (de) * | 1998-03-20 | 1999-11-04 | Robert Seuffer Gmbh & Co | Vorrichtung zur Ableitung hochfrequenter elektrischer Ströme von einem zylindrischen Gehäuse |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007016536A1 (de) | 2007-04-05 | 2008-10-16 | Robert Seuffer Gmbh & Co. Kg | Vorrichtung zur Messung eines in einem Druckmedium herrschenden Druckes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19953617A1 (de) | 2001-05-10 |
| EP1098180B1 (de) | 2007-10-03 |
| DE50014691D1 (de) | 2007-11-15 |
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