DE29510696U1 - Non-contact rotary switch with at least three switching positions - Google Patents
Non-contact rotary switch with at least three switching positionsInfo
- Publication number
- DE29510696U1 DE29510696U1 DE29510696U DE29510696U DE29510696U1 DE 29510696 U1 DE29510696 U1 DE 29510696U1 DE 29510696 U DE29510696 U DE 29510696U DE 29510696 U DE29510696 U DE 29510696U DE 29510696 U1 DE29510696 U1 DE 29510696U1
- Authority
- DE
- Germany
- Prior art keywords
- switching
- magnetic field
- rotor
- rotary switch
- field sensors
- 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
Links
- 230000004907 flux Effects 0.000 claims description 7
- 238000011156 evaluation Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
- H03K2017/9713—Multiposition, e.g. involving comparison with different thresholds
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/94057—Rotary switches
- H03K2217/94068—Rotary switches with magnetic detection
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Description
6157t6157t
BeschreibungDescription
Berührungsloser Rotationsschalter mit mindestens drei Schaltpositionen
5Non-contact rotary switch with at least three switching positions
5
Die Erfindung betrifft einen berührungslosen Rotationsschalter mit mindestens drei Schaltpositionen.The invention relates to a contactless rotary switch with at least three switching positions.
Insbesondere bei Personenkraftwagen besteht gegenwärtig ein
Trend, mindestens einige der bisher verwendeten mechanischen Schalter durch berührungslose Schalter mit Magnetfeldsensoren
zu ersetzen. Hauptbestandteil eines solchen Schalters ist
meistens ein Hall-Sensor, der eine Hall-Spannung liefert, die proportional zum anliegenden transversalen Magnetfeld ist.
Durch die Verwendung von Silizium als Halbleitermaterial lassen sich Hall-Sensor und Auswerteschaltung zusammen als integrierter
Schaltkreis (IC) auf einem Chip integrieren. Für die integrierte Signalauswertung gibt es dabei drei unterschiedliche
Möglichkeiten: ein lineares Ausgangssignal, ein schaltendes
(digitales) Ausgangssignal und die Auswertung des Differenzsignals
zweier Sensoren.In particular, there is currently a
Trend to replace at least some of the mechanical switches used so far with contactless switches with magnetic field sensors. The main component of such a switch is
usually a Hall sensor that delivers a Hall voltage that is proportional to the applied transverse magnetic field.
By using silicon as a semiconductor material, the Hall sensor and evaluation circuit can be integrated together as an integrated circuit (IC) on a chip. There are three different options for integrated signal evaluation: a linear output signal, a switching (digital) output signal and the evaluation of the difference signal of two sensors.
Aus dem DE 94 15 257 Ul ist bereits ein Näherungsschalter mit drei Schaltpositionen bekannt, durch den der Zustand desFrom DE 94 15 257 Ul a proximity switch with three switching positions is already known, by which the state of the
Schloßzylinders in einer Kraftfahrzeugtür für die Zentralverriegelung
abgefragt werden soll. Im einzelnen sollen drei Zustände erkannt werden: Schloßzylinder in Ruhe, nach links gedreht
oder nach rechts gedreht (Öffnen oder Schließen der
Kfz-Türe). Zur Lösung wird dort ein Mikroschalter mit einerLock cylinder in a vehicle door for the central locking system is to be queried. Three states are to be detected in detail: Lock cylinder at rest, turned to the left or turned to the right (opening or closing the
The solution is a microswitch with a
auf eine positive oder negative Magnetflußdifferenz reagierenden dualen Auswerteschaltung vorgeschlagen, der durch
einen in der Ruhestellung des Schloßzylinders mittig oberhalb der beiden Hall-Sensoren befindlichen Auslösekörper, der
durch Drehen des Schloßzylinders in eine außermittigeA dual evaluation circuit reacting to a positive or negative magnetic flux difference is proposed, which is
a trigger body located in the rest position of the lock cylinder centrally above the two Hall sensors, which
by turning the lock cylinder in an off-center
Position bringbar ist, geschaltet wird.Position can be brought, is switched.
d J 5 7 J d J 5 7 J
Aufgabe der vorliegenden Erfindung ist es, einen berührungslosen Rotationsschalter mit mindestens drei Schaltpositionen zu schaffen.The object of the present invention is to create a contactless rotary switch with at least three switching positions.
Erfindungsgemäß wird dies gelöst durch einen Rotationsschalter According to the invention, this is achieved by a rotary switch
- mit einem im wesentlichen zylinderförmigen Rotor, in dem in axialer Richtung aufeinanderfolgend mindestens zwei segmentförmige, radial aufmagnetisierte Dauermagneten angeordnet sind,- with a substantially cylindrical rotor in which at least two segment-shaped, radially magnetized permanent magnets are arranged one after the other in the axial direction,
- und mit jeweils einem der Dauermagneten zugeordneten Magnetfeldsensoren, die in axialer Richtung aufeinanderfolgend radial zum Rotor lagefest angeordnet sind, und die bei gegenüberstehenden zugehörigen MagnetSegmenten deren Magnetfluß wahrnehmen und bei nicht-gegenüberstehenden zugehörigen Magnetsegmenten keinen Magnetfluß wahrnehmen und jeweils ein entsprechendes Schaltsignal erzeugen,- and with magnetic field sensors assigned to each of the permanent magnets, which are arranged in a fixed position radially to the rotor in the axial direction, one after the other, and which detect the magnetic flux of the corresponding magnet segments when they are opposite one another, and do not detect any magnetic flux when the corresponding magnet segments are not opposite one another, and each generate a corresponding switching signal,
- wobei in einer Ruhestellung des Rotors alle Magnetsegmente den zugehörigen Magnetfeldsensoren gegenüberstehen,- where in a rest position of the rotor all magnet segments face the corresponding magnetic field sensors,
- und wobei durch Drehen des Rotors in eine andere Schaltposition eine jeweils andere Kombination von einander gegenüberstehenden bzw. nicht-gegenüberstehenden Magnetsegmenten und Magnetfeldsensoren auftritt, so daß mit den verschiedenen Schaltpositionen jeweils verschiedene Kombinationen der Schaltsignale der Magnetfeldsensoren korrespondieren, die als Schaltzustand des Rotationsschalters auswertbar sind.- and whereby by rotating the rotor into a different switching position, a different combination of opposing or non-opposing magnet segments and magnetic field sensors occurs, so that different combinations of the switching signals of the magnetic field sensors correspond to the different switching positions, which can be evaluated as the switching state of the rotary switch.
Die Erfindung wird anhand der Figuren der Zeichnung noch näher erläutert. Es zeigt:The invention is explained in more detail with reference to the figures in the drawing. It shows:
Figur 1 nebeneinander in zwei verschiedenen geschnittenen Ansichten schematisch den Aufbau des Rotationsschalters,Figure 1 shows schematically the structure of the rotary switch in two different sectional views,
S5 815 7 JS5 815 7 J
. 3. 3
Figur 2 und 3 die Magnetentfaltung am Beispiel von zwei bzw. fünf Sensoren/Segmenten,Figures 2 and 3 show the magnet deployment using the example of two and five sensors/segments, respectively.
Figur 3 ein Diagramm der Abhängigkeit des Magnetflusses vom Drehwinkel Alpha.Figure 3 is a diagram of the dependence of the magnetic flux on the angle of rotation alpha.
Im linken Teil der Figur 1 ist ein Schloßrotor 1 dargestellt, in den in axialer Richtung zwei segmentförmige Magneten 2,3 eingespritzt und radial aufmagnetisiert sind. Der Schloßrotor 1 ist in der Regel aus Kunststoff hergestellt und mit dem Schloßzylinder mechanisch verbunden. Radial zum Schloßrotor stehen zwei Magnetfeldsensoren 4,5, wie dies im rechten Teil der Figur 1 besser erkennbar ist.The left part of Figure 1 shows a lock rotor 1 into which two segment-shaped magnets 2, 3 are injected in the axial direction and magnetized radially. The lock rotor 1 is usually made of plastic and is mechanically connected to the lock cylinder. Two magnetic field sensors 4, 5 are located radially to the lock rotor, as can be seen better in the right part of Figure 1.
Das erfindungsgemäße Funktionsprinzip ist insbesondere aus Figur 2 ersichtlich, die eine Abwicklung der MagnetSegmente 2,3 auf eine Ebene zeigt. In Ruhestellung (Mittelstellung) steht, wie dargestellt, immer ein Dauermagnet oberhalb des zugehörigen Sensors. Hierdurch fließt ein Magnetfluß durch 0 den Sensor, so daß ein externes Magnetfeld den Zustand des Sensors nicht stören kann.· Dies ist von großem Vorteil hinsichtlich der Einbruchsicherheit. Wenn der Rotor 1 sich um einen Winkel Alpha dreht, dann wird am Ende des Magnetsegmentes das Magnetfeld durch den Sensor abgesenkt, wie in Figur 4 dargestellt. Bei Unterschreiten des Sensorschwellwertes ändert sich das Schaltsignal am Ausgang des ICs.The functional principle according to the invention is particularly evident from Figure 2, which shows the magnet segments 2, 3 unfolded on a plane. In the rest position (middle position), as shown, there is always a permanent magnet above the associated sensor. As a result, a magnetic flux flows through the sensor, so that an external magnetic field cannot disturb the state of the sensor. This is a great advantage in terms of burglary protection. When the rotor 1 rotates by an angle alpha, the magnetic field at the end of the magnet segment is reduced by the sensor, as shown in Figure 4. When the sensor threshold value is undershot, the switching signal at the output of the IC changes.
Aus der Figur 4 ist erkennbar, daß die Toleranzen auf die Schaltpunkte aufgrund der steilen Flanke der dargestelltenFrom Figure 4 it can be seen that the tolerances on the switching points are due to the steep flank of the shown
Kurve relativ klein und unempfindlich für die Toleranzen des Magneten und des Sensors sind. Die Kurve wurde für einen Abstand von 1 mm vom Hall-IC zur Polfläche aufgenommen. Gemessen wurde die radiale Induktion. 35Curve is relatively small and insensitive to the tolerances of the magnet and the sensor. The curve was recorded for a distance of 1 mm from the Hall IC to the pole face. The radial induction was measured. 35
Die Anzahl der Sensoren bzw. der Magnetsegmente ist abhängig von der Anzahl der gewünschten Schaltzustände. In Figur dreiThe number of sensors or magnet segments depends on the number of desired switching states. In figure three
8157181571
ist ein Ausführungsbeispiel mit fünf Sensoren "X" und zugehörigen Segmenten dargestellt, das bereits die Erfassung von fünf Schaltpositionen zusätzlich zur Ruhestellung erlaubt. Mit einem erfindungsgemäß aufgebautem Rotationsschalter können demnach auch Codierschalter realisiert werden.An embodiment with five sensors "X" and associated segments is shown, which already allows the detection of five switching positions in addition to the rest position. With a rotary switch constructed according to the invention, coding switches can therefore also be implemented.
Claims (1)
51. Non-contact rotary switch with at least three switching positions,
5
10segment-shaped, radially magnetized permanent magnets (2,3) are arranged,
10
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29510696U DE29510696U1 (en) | 1995-06-30 | 1995-06-30 | Non-contact rotary switch with at least three switching positions |
PCT/DE1996/001054 WO1997002660A1 (en) | 1995-06-30 | 1996-06-14 | Contactless rotary switch with at least three switch positions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29510696U DE29510696U1 (en) | 1995-06-30 | 1995-06-30 | Non-contact rotary switch with at least three switching positions |
Publications (1)
Publication Number | Publication Date |
---|---|
DE29510696U1 true DE29510696U1 (en) | 1995-08-24 |
Family
ID=8010022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29510696U Expired - Lifetime DE29510696U1 (en) | 1995-06-30 | 1995-06-30 | Non-contact rotary switch with at least three switching positions |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE29510696U1 (en) |
WO (1) | WO1997002660A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997027673A1 (en) * | 1996-01-25 | 1997-07-31 | Siemens Aktiengesellschaft | Electronic switching device operating in a contactless manner |
EP0948137A2 (en) * | 1998-03-31 | 1999-10-06 | Siemens Aktiengesellschaft | Noncontact rotary switch with three switching positions |
DE19607199C2 (en) * | 1996-02-26 | 1999-11-25 | Robert Seuffer Gmbh & Co | Adjustment device |
DE102006036143A1 (en) * | 2006-07-31 | 2008-02-07 | Valeo Schalter Und Sensoren Gmbh | switch module |
DE102006054412A1 (en) * | 2006-07-31 | 2008-02-07 | Conti Temic Microelectronic Gmbh | Contactless switch |
EP1111171B2 (en) † | 1999-12-21 | 2010-10-20 | Valeo Securite Habitacle S.A.S. | Security system for an opening of an automobile equipped with switches without mechanical action |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4054860A (en) * | 1975-12-01 | 1977-10-18 | Oak Industries Inc. | Hall effect rotary switch |
FR2601206B1 (en) * | 1986-07-01 | 1988-10-21 | Hardellet Guy | CONTROL CONTACTOR, IN PARTICULAR FOR POWER SUPPLY CIRCUITS OF AN ELECTRIC HANDLING TROLLEY DRIVE MOTOR |
-
1995
- 1995-06-30 DE DE29510696U patent/DE29510696U1/en not_active Expired - Lifetime
-
1996
- 1996-06-14 WO PCT/DE1996/001054 patent/WO1997002660A1/en active Application Filing
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997027673A1 (en) * | 1996-01-25 | 1997-07-31 | Siemens Aktiengesellschaft | Electronic switching device operating in a contactless manner |
DE19607199C2 (en) * | 1996-02-26 | 1999-11-25 | Robert Seuffer Gmbh & Co | Adjustment device |
EP0948137A2 (en) * | 1998-03-31 | 1999-10-06 | Siemens Aktiengesellschaft | Noncontact rotary switch with three switching positions |
DE19814379A1 (en) * | 1998-03-31 | 1999-10-07 | Siemens Ag | Non-contact rotary switch with three switch positions |
EP0948137A3 (en) * | 1998-03-31 | 1999-12-01 | Siemens Aktiengesellschaft | Noncontact rotary switch with three switching positions |
DE19814379C2 (en) * | 1998-03-31 | 2000-01-13 | Siemens Ag | Non-contact rotary switch with three switch positions |
EP1111171B2 (en) † | 1999-12-21 | 2010-10-20 | Valeo Securite Habitacle S.A.S. | Security system for an opening of an automobile equipped with switches without mechanical action |
DE102006036143A1 (en) * | 2006-07-31 | 2008-02-07 | Valeo Schalter Und Sensoren Gmbh | switch module |
DE102006054412A1 (en) * | 2006-07-31 | 2008-02-07 | Conti Temic Microelectronic Gmbh | Contactless switch |
US8022796B2 (en) | 2006-07-31 | 2011-09-20 | Conti Temic Microelectronic Gmbh | Contactless switch |
Also Published As
Publication number | Publication date |
---|---|
WO1997002660A1 (en) | 1997-01-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 19951005 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 19981120 |
|
R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20010702 |
|
R081 | Change of applicant/patentee |
Owner name: TYCO ELECTRONICS LOGISTICS AG, CH Free format text: FORMER OWNER: SIEMENS AKTIENGESELLSCHAFT, 80333 MUENCHEN, DE Effective date: 20011129 |
|
R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20030519 |
|
R071 | Expiry of right |