EP1960733A1 - Drehwinkelsensor und drehwinkelsensorsystem - Google Patents
Drehwinkelsensor und drehwinkelsensorsystemInfo
- Publication number
- EP1960733A1 EP1960733A1 EP06792331A EP06792331A EP1960733A1 EP 1960733 A1 EP1960733 A1 EP 1960733A1 EP 06792331 A EP06792331 A EP 06792331A EP 06792331 A EP06792331 A EP 06792331A EP 1960733 A1 EP1960733 A1 EP 1960733A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- housing
- shaft
- rotation
- angle
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0215—Determination of steering angle by measuring on the steering column
Definitions
- the invention relates to a rotation angle sensor for determining the rotation angle of a rotatable shaft at its shaft end.
- Shaft ends are known in which signal transmitters are arranged on the shaft side, the signals of which are received by non-rotatably arranged signal receivers.
- the assembly is complex since the shaft end is to be arranged in such a way that the signal transmitters are positioned precisely in the detection range of the signal receivers
- the present invention is therefore based on the object of developing a rotation angle sensor of the type mentioned at the outset in such a way that the disadvantages mentioned are remedied.
- a simple assembly of the angle of rotation sensor should be possible, and its
- Shaft recording with at least one on the shaft recording arranged signal transmitter and with at least one rotatably arranged on the housing, interacting with the signal transmitter signal receiver, the shaft receptacle being designed such that the housing is fastened in space only via the shaft receptacle at the shaft end.
- Shaft holder is attached to the shaft end. In this respect, no separate components for fastening the
- the shaft receptacle is aligned very precisely with respect to the shaft end, and thus the signal transmitter to it
- Another advantage of the invention is that all sensor-relevant components are arranged within one housing. Such a rotation angle sensor can
- the housing advantageously includes an anti-rotation device.
- the anti-rotation device can advantageously be braced against a component which is arranged in a stationary manner in the room.
- a component can be, for example, a housing of a larger unit, for example an electric motor, within which the rotation angle sensor according to the invention can be installed.
- the anti-rotation device can be designed, for example, as a pin protruding from the housing of the angle-of-rotation sensor, which pin engages in a stationary recess.
- the cutout can be designed as a pin receptacle extending in the axial direction, so that an anti-rotation lock is also ensured if the pin does not fully engage the pin receptacle in the axial direction, but at least in sections.
- Anti-rotation can also be ensured by an asymmetrical
- Weight distribution of the housing are formed. This also ensures that due to the particular weight of the housing, the housing is not rotated when the shaft rotates.
- the anti-rotation device comprises an intermediate element which is arranged between the housing and the fixedly arranged component in such a way that, on the one hand, it is at least conditionally displaceable relative to the housing in a movement which is essentially perpendicular to the central longitudinal axis of the shaft or the housing is and that it is the other
- a second direction of movement is preferably mounted transversely to this first direction of displacement relative to the stationary component m. Due to the provision of such an intermediate element
- the intermediate part is arranged so as to be displaceably mounted on the housing and / or on the fixedly arranged component via a tongue and groove connection and / or a pin-elongated hole connection.
- Radial eccentricities can be compensated in a suitable manner by tongue-and-groove connections, which enable the intermediate part to be moved at least to a certain extent in the corresponding displacement direction.
- Pin-slot connections in which pins are provided which engage in corresponding slots extending perpendicular to the shaft axis.
- a corresponding tongue and groove connection is provided, which has T-slots and T-springs which are designed to be complementary thereto. This can be achieved, for example, that the intermediate element by providing such
- connection in the axial direction can be pre-assembled captively on the housing.
- the intermediate element can in particular provide pins on the side facing the stationary component, the pins provided in the stationary component, transverse to the grooves
- the direction of displacement of the intermediate element relative to the housing via the tongue and groove connection advantageously extends perpendicularly to a direction of displacement which can be provided via the pin-elongated hole connection between the intermediate element and the stationary component.
- Shaft receptacle can be attached to the shaft end by means of a press, adhesive, latching and / or screw connection.
- Such a pivot bearing can be, for example, a roller bearing, such as a ball or groove bearing, or a plain bearing.
- the shaft receptacle as such can advantageously be designed in such a way that it has a sleeve section for the shaft end and a signal transmitter receptacle section facing away from the sleeve section and designed concentrically therewith.
- the signal transmitter receiving section can in particular delimit a circular space within which the signal transmitter can be arranged.
- the signal transmitter can be designed, for example, as an annular or circular disk, which is then in an appropriately designed one
- Signal generator receiving section is arranged.
- Magnetic element can be formed, in particular as a ring or circular disk magnet.
- the signal receiver is advantageously designed as a magnetic field sensor, in particular as a Hall element. In particular, two are used to generate opposing signals
- Magnetic field sensors are provided which have phase-shifted, analog output signals. These phase-shifted, analog output signals can then be used to determine the angle of rotation of the shaft within one revolution in a known manner.
- Magnetic element trained signal transmitter of the signal receiver and in particular an electrical with the signal receiver connected number memory is supplied with electrical energy by an induction coil, which is arranged around a pulse wire, with a sudden magnetic reversal in the pulse wire due to the magnetic element when the shaft holder is rotated, as a result of which sufficient electrical energy at the induction coil to supply the sensor
- Pulse wire preferably has a soft magnetic core and a hard magnetic sheath.
- the induction coil can also be used to supply additional electrical and electronic components required for evaluating the angle of rotation.
- Housing arranged circuit board is arranged.
- this circuit board for example, the one mentioned Number memory and an evaluation unit for determining the angle of rotation of the shaft can be arranged.
- the housing of the angle of rotation sensor is advantageously designed to be essentially rotationally symmetrical. In this way, an optimal arrangement of the individual components of the sensor can be achieved in a comparatively small installation space. It is also conceivable for the housing to include a cover for at least largely sealing the housing.
- the signal receiver is separated from the signal transmitter by a wall in one
- the signal receiver which can be arranged in particular on a circuit board, and other components are reliably protected from environmental influences.
- the rotation angle sensor according to the invention can be used wherever a rotation angle of a shaft is to be determined.
- the rotation angle sensor can in particular be arranged on the free end of a steering shaft of a vehicle or on the motor shaft of an electric motor for driving a steering shaft of a vehicle.
- the angle of rotation sensor can within the motor housing of an electric motor, in particular an electric motor for driving a
- a rotation angle sensor system comprising a rotation angle sensor according to the invention and a shaft end, the fastening of the housing of the rotation angle sensor in space only taking place via the shaft mounting of the rotation angle sensor at the shaft end.
- the shaft end can be used with the Shaft receptacles can be arranged via, for example, press, adhesive, latching and / or screw connections.
- FIG. 1 shows a longitudinal section through an electric motor which has a rotation angle sensor according to the invention
- FIG. 2 shows a longitudinal section through the rotation angle sensor according to FIG. 1;
- Figure 3 is an exploded view of the
- Figure 4 shows the sensor cover and an intermediate part
- Figure 5 shows the sensor cover including the intermediate part
- Figure 4 is a perspective view from the other side.
- the longitudinal section through an electric motor 10 is shown in FIG.
- the electric motor 10 comprises a motor housing 12 on which two end shields 14 are arranged.
- the two bearing plates 14 carry the shaft 18 of the bearing 16
- the rotor 20 of the electric motor is arranged on the shaft 18 between the two bearings 16.
- the stator 22 is provided on the housing 12.
- a rotation angle sensor 26 is attached to the shaft end 24 of the shaft 18 located in the housing 12.
- the angle of rotation sensor 26 is supported by a pm-like anti-rotation device 28 to prevent rotation on the housing 12.
- the housing 12 has a pin receptacle 30 running in the axial direction.
- the angle of rotation sensor 26 is electrically connected to a motor board 34 via electrical contacts 32.
- the motor board 34 points in the
- Motor board 34 is covered by a removable housing cover 36.
- the electric motor 10 can in particular in one
- a steering shaft can be driven via the shaft 18, for example, directly or with the interposition of a transmission.
- the precise angle of rotation of the shaft 18 can be determined with the angle of rotation sensor 26.
- the angle of rotation sensor 26 has its own housing 38, on which a shaft holder 42 which is rotatable via a bearing 40 is arranged.
- the shaft receptacle 42 has a sleeve section 44 on the side facing the shaft, on which the shaft end 24 is arranged in a rotationally fixed and rigid manner.
- Shaft end 24 on shaft receptacle 44 can in particular be provided with a press, adhesive, latching and / or screw connection.
- the arrangement of the angle of rotation sensor 26 at the shaft end 24 is such that the angle of rotation sensor 26 is only attached to the shaft end.
- the rotation angle sensor 26 is consequently not arranged on the housing 12 of the electric motor or on another stationary component.
- the contacts 32 and the anti-rotation device 28 are not provided for fastening the angle of rotation sensor 26 in the electric motor 10.
- the circular signal transmitter section 46 receives a signal transmitter 48 which is designed as a circular disk magnet. Due to the rigid connection between the shaft end 24 and the shaft holder 42, the signal generator 48
- Double magnetic field sensor 52 arranged.
- Double magnetic field sensor 52 generates phase-shifted output signals which are evaluated by means of evaluation electronics also provided on the sensor board 50. The angle of rotation of the shaft 18 can then be determined from these signals within one revolution or a section of rotation
- the magnetic signal generator 48 can be used as increment coding; at a The respective polarity reversal of a signal receiver sends a signal to the number memory. Overall, the magnetic signal generator as well as the pulse wires together
- Coil body 54 and coils 56 be designed so that enough energy is provided to supply all the electrical components on the sensor board 50 with enough energy. This results in an independently working rotation angle sensor.
- the two coil formers 54, or the pulse wires arranged therein, cross on the central longitudinal axis of the shaft 18
- the sensor board 50 is arranged in a space 58 which is sealed off from the shaft holder 42.
- the space 58 can be closed tightly via a sensor cover 60. It is thereby achieved that the sensor board 50 together with electronics is protected from environmental influences in the housing 38 of the
- Angle of rotation sensor is arranged.
- the rotation angle sensor 26 can be installed in this way: First, the sensor is mounted on the shaft end 24. Then the anti-rotation device 28 in the
- Shaft holder 42 can be arranged. This can advantageously ensure that contacting the Sensor with a corresponding circuit board takes place simultaneously with the insertion of the anti-rotation device 28 into the pin receptacle 30. This eliminates one step.
- FIGS. 4 and 5 show a sensor cover 62 which can be used instead of the sensor cover as shown in FIGS. 1 to 3. As is clear from FIG. 4, the sensor cover 60 has on it
- T-shaped springs 64 which are arranged along a direction 66 running perpendicular to the shaft 18.
- T-grooves 68 which are arranged on an intermediate part 70. With springs 64 inserted into the T-grooves 68, the cover 62, and thus the entire sensor 26, can at least be moved relative to the intermediate part 70 along the direction 66.
- the intermediate part 70 has the cover 62 on it
- the two pins 72 engage in the slot 30 according to FIG. 1 in corresponding elongated holes provided on the housing 12.
- the elongated holes to be provided for receiving the pins 72 advantageously have a width which corresponds to the diameter of the pins 72 or is only slightly larger.
- the elongated holes extend at least to a limited extent in the direction 77, so that the intermediate element 70 relative to the housing 12
- the intermediate element 70 can be arranged in a preassembly position on the sensor cover 62 due to the provision of the T-slot connection. Because of the pins 72 which extend far enough in the axial direction and which engage in correspondingly deep elongated holes, a certain amount of play occurring in the axial direction can be compensated for.
- Embodiment of the invention is that the signal transmitter and the signal receiver within the sensor 26 are firmly positioned relative to one another and form a closed system.
- the tolerance chains are due to the arrangement of the
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510060519 DE102005060519A1 (de) | 2005-12-11 | 2005-12-11 | Drehwinkelsensor und Drehwinkelsensorsystem |
DE102006020424A DE102006020424A1 (de) | 2006-04-25 | 2006-04-25 | Drehwinkelsensor und Drehwinkelsensorsystem |
PCT/EP2006/009506 WO2007065496A1 (de) | 2005-12-11 | 2006-09-30 | Drehwinkelsensor und drehwinkelsensorsystem |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1960733A1 true EP1960733A1 (de) | 2008-08-27 |
Family
ID=37478716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06792331A Withdrawn EP1960733A1 (de) | 2005-12-11 | 2006-09-30 | Drehwinkelsensor und drehwinkelsensorsystem |
Country Status (3)
Country | Link |
---|---|
US (1) | US7932716B2 (de) |
EP (1) | EP1960733A1 (de) |
WO (1) | WO2007065496A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101535771B (zh) * | 2006-12-21 | 2011-09-21 | 并木精密宝石株式会社 | 小型旋转编码器 |
EP2159547A3 (de) * | 2008-08-30 | 2014-06-11 | Walter Mehnert | Sensorbaugruppe für einen Drehgeber und mit einer solchen Sensorbaugruppe ausgestatteter Drehgeber |
CN101708736B (zh) * | 2009-12-11 | 2011-08-10 | 北汽福田汽车股份有限公司 | 方向盘转角传感器装置以及汽车电子稳定系统 |
US20120176125A1 (en) * | 2011-01-12 | 2012-07-12 | Lan Lee | Device for sensing positions of a rotating wheel |
KR101789820B1 (ko) * | 2011-04-15 | 2017-10-25 | 엘지이노텍 주식회사 | 앵글센서 |
US9000756B2 (en) | 2012-08-23 | 2015-04-07 | Raven Industries, Inc. | Steering position sensor and method for using the same |
KR101809425B1 (ko) * | 2015-04-23 | 2017-12-14 | 미쓰비시덴키 가부시키가이샤 | 회전 검출 장치 및 회전 검출 장치의 제조 방법 |
DE102018202226B4 (de) * | 2018-02-14 | 2022-05-12 | Robert Bosch Gmbh | Lenkvorrichtung mit einer Lenksensoreinheit zur induktiven Erfassung wenigstens einer Lenkinformation |
WO2019224587A1 (en) | 2018-05-24 | 2019-11-28 | Bosch Car Multimedia Portugal, S.A. | Chain-driven steering angle sensor |
EP3683552B1 (de) * | 2019-01-17 | 2021-03-10 | Dr. Johannes Heidenhain GmbH | Abtasteinheit für eine winkelmesseinrichtung |
EP3779487B1 (de) * | 2019-08-14 | 2023-07-19 | TE Connectivity Sensors Germany GmbH | Anordnung und verfahren zur bestimmung der stärke eines magnetischen streufeldes |
DE102022134622A1 (de) | 2022-12-22 | 2024-06-27 | Dr. Fritz Faulhaber GmbH & Co.KG | Motor mit Drehgeber und Trägerelement für einen Motor mit Drehgeber |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE6604776U (de) | 1961-10-28 | 1970-02-26 | Johannes Huebner Fabrik Elek S | Gleich- oder wechselstrom-tachometerdynamo. |
DE3544751A1 (de) | 1985-12-18 | 1987-06-19 | Heidelberger Druckmasch Ag | Tachogenerator |
JPH024975U (de) | 1988-06-22 | 1990-01-12 | ||
IT1270048B (it) * | 1993-04-26 | 1997-04-28 | Murata Manufacturing Co | Sensore di angolo di rotazione del tipo a capacita' |
DE4407474C2 (de) | 1994-03-07 | 2000-07-13 | Asm Automation Sensorik Messte | Drehwinkelsensor |
DE4438880A1 (de) | 1994-10-31 | 1996-05-02 | Elobau Elektrobauelemente Gmbh | Drehwinkelsensor |
US20040129869A1 (en) * | 2000-10-22 | 2004-07-08 | Lennart Stridsberg | Position transducer |
DE10203278B4 (de) | 2001-03-09 | 2012-11-22 | Dr. Johannes Heidenhain Gmbh | Kupplung und Winkelmessvorrichtung mit einer derartigen Kupplung |
ITTO20010365A1 (it) | 2001-04-13 | 2002-10-13 | Elcis S R L | Trasduttore rotativo con dispositivo di serraggio di tipo autocentrante. |
DE10130130B4 (de) * | 2001-06-22 | 2007-09-20 | Minebea Co., Ltd. | Vorrichtung zur Erzeugung eines drehzahlabhängigen Signals für einen Elektromotor, insbesondere für einen elektronisch kommutierten Gleichstrommotor |
DE10316870A1 (de) | 2003-04-11 | 2004-10-21 | Dr. Johannes Heidenhain Gmbh | Positionsmesseinrichtung |
JP2005140557A (ja) | 2003-11-04 | 2005-06-02 | Asahi Kasei Electronics Co Ltd | 舵角検出装置 |
DE202004010921U1 (de) | 2004-07-12 | 2004-09-02 | Feig Electronic Gmbh | Positionsgeber |
-
2006
- 2006-09-30 US US12/086,028 patent/US7932716B2/en not_active Expired - Fee Related
- 2006-09-30 WO PCT/EP2006/009506 patent/WO2007065496A1/de active Application Filing
- 2006-09-30 EP EP06792331A patent/EP1960733A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007065496A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20090309583A1 (en) | 2009-12-17 |
WO2007065496A1 (de) | 2007-06-14 |
US7932716B2 (en) | 2011-04-26 |
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Legal Events
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RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
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17Q | First examination report despatched |
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