DE102012014208A1 - Device having a torque sensor device and optionally a steering angle sensor device for a motor vehicle and method for assembling such a device from a plurality of components - Google Patents

Device having a torque sensor device and optionally a steering angle sensor device for a motor vehicle and method for assembling such a device from a plurality of components

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Publication number
DE102012014208A1
DE102012014208A1 DE102012014208.0A DE102012014208A DE102012014208A1 DE 102012014208 A1 DE102012014208 A1 DE 102012014208A1 DE 102012014208 A DE102012014208 A DE 102012014208A DE 102012014208 A1 DE102012014208 A1 DE 102012014208A1
Authority
DE
Germany
Prior art keywords
flux
slider
holder
axial
magnetic
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.)
Pending
Application number
DE102012014208.0A
Other languages
German (de)
Inventor
Roman Schöpe
Ekkehard Fröhlich
Michael Cirillo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Schalter und Sensoren GmbH
Original Assignee
Valeo Schalter und Sensoren GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valeo Schalter und Sensoren GmbH filed Critical Valeo Schalter und Sensoren GmbH
Priority to DE102012014208.0A priority Critical patent/DE102012014208A1/en
Publication of DE102012014208A1 publication Critical patent/DE102012014208A1/en
Application status is Pending legal-status Critical

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00Measuring torque, work, mechanical power, or mechanical efficiency in general
    • G01L3/02Rotary-transmission dynamometers
    • G01L3/04Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electrical or magnetic means for indicating
    • G01L3/101Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electrical or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/104Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electrical or magnetic means for indicating involving magnetic or electromagnetic means involving permanent magnets

Abstract

The invention relates to a device (1) for a motor vehicle, having a torque sensor device for detecting a torque applied to a steering shaft of the motor vehicle, wherein the torque sensor device comprises a magnet, which is connectable to a first shaft part of the steering shaft, a holder (2) with a second shaft portion of the steering shaft is connectable, a magnetic stator (12) arranged on the holder (2), which is for conducting magnetic flux from the magnet toward a first and a second flux guide (15, 16) and thereby to a magnetic sensor (17 , 18) of the torque sensor device, and comprises a slider (11) for the holder (2). The holder (2) is rotatable relative to the slider (11), and the slider (11) is adapted to support the flux conductors (15, 16). Between the first flux guide (15) and the second flux guide (16) an axial insertion slot (49, 50) is formed, in which the magnetic sensor (17, 18) extends axially into it.

Description

  • The invention relates to a device for a motor vehicle, having a torque sensor device for detecting a torque applied to a steering shaft of the motor vehicle. The torque sensor device comprises a magnet that can be connected to a first shaft part of the steering shaft, as well as a holder that is connectable to a second shaft part of the steering shaft. On the holder, a magnetic stator - in particular of a soft magnetic material - arranged, which is designed for conducting magnetic flux from the magnet towards a first and a second flux guide and thereby to a magnetic sensor. In addition, a slider for the holder is provided, which is designed to carry the flux conductors. The holder is rotatably mounted relative to the slider. The invention also relates to a method of assembling such a device from said components.
  • Torque sensor devices for detecting a torque applied to a steering shaft of a motor vehicle are already known in the art. Such torque sensor devices can be used for example in electric steering systems. Such a torque sensor device is known from the document, for example US 2004/0194560 A1 as well as from the publication DE 102 40 049 A1 known. The torque sensor device is attached to two opposite in the axial direction shaft parts or partial waves of the steering shaft. On the first shaft part, a magnet - such as a ring magnet - arranged, while mounted on the other shaft part, a holder with a magnetic stator which is opposite to the permanent magnet in the radial direction over a small air gap. About the stator - which usually consists of two separate stator parts - the magnetic flux of the magnet is guided towards a first and a second flux guide, which then the magnetic flux to a magnetic sensor - such as a Hall sensor - deliver. The magnetic sensor is located between the two flux conductors, as for example in the 7 and 8th of the document US 2004/0194560 A1 is clearly recognizable.
  • Such a torque sensor device is also known from the document DE 10 2007 043 502 A1 known.
  • In addition, steering angle sensor devices which serve to detect the current steering angle of the steering shaft are known from the prior art. Such a device is for example from the document DE 10 2008 011 448 A1 to be known as known. A rotational movement of the steering shaft is transmitted here via a gear on a smaller gear, which carries a magnet. The rotation of the smaller gear is then detected using a magnetic sensor.
  • The prior art also includes such devices in which the torque sensor device on the one hand and the steering angle sensor device on the other hand are integrally formed as a common unit.
  • In the torque sensor devices, as known from the prior art (for example, the document US 2004/0194560 A1 ), a major challenge is to take measures to ensure easier installation of this device. In the prior art, for example, the magnetic stator is formed from two separate stator parts, which are mounted axially or joined together, so that here an axial mounting direction is given. On the other hand, the flux guides must be mounted radially, and also the magnetic sensor requires a radial mounting direction. So you have a total of several mounting directions, which makes the one hand, the assembly of the entire device relatively complex and complicated and on the other hand also helps that the torque sensor device claimed in the assembled state relatively much space.
  • It is an object of the invention to provide a solution as the assembly or assembly of a device of the type mentioned can be simplified compared to the prior art.
  • This object is achieved by a device, by a motor vehicle and by a method having the features according to the respective independent claims. Advantageous embodiments of the invention are the subject of the dependent claims, the description and the figures.
  • An inventive device for a motor vehicle comprises a torque sensor device for detecting a torque applied to a steering shaft of the motor vehicle. The torque sensor device comprises a magnet which can be connected to a first shaft part of the steering shaft, as well as a holder which can be connected to a second shaft part of the steering shaft. The two shaft parts can be coupled to each other, for example via a torsion bar. The torque sensor device also has a magnetic stator disposed on the holder which is adapted to conduct magnetic flux from the magnet to first and second flux guides and over the Flux conductor is formed to a magnetic sensor. A slider for the holder serves to support the flux conductors, wherein the holder is rotatably mounted relative to the slider. Between the first flux guide and the second flux guide, an axial insertion slot is formed, in which the magnetic sensor extends axially.
  • Unlike the prior art according to US 2004/0194560 A1 , in which according to there 8th the magnetic sensor is inserted radially into a radial insertion slot between the two flux guides, in the device according to the invention between the flux conductors an insertion slot in the axial direction is provided, in which the magnetic sensor extends in the axial direction. Thus, the magnetic sensor is mounted not in the radial direction, but in the axial direction, whereby in particular a mounting direction - namely the radial direction during assembly - is eliminated. Overall, this greatly simplifies the assembly of the device and, in addition, such an approach also enables the provision of a more compact device.
  • Preferably, the flux guides each have a radially receiving region arranged in axial overlap with the stator for receiving the magnetic flux from the stator and an axially extending at a right angle from the receiving region and thus extending in the axial direction transmission area for transmitting the magnetic flux to the magnetic sensor on. In this case, the insertion slot is formed between the respective axial transmission regions of the flux conductors. Thus, on the one hand a reliable tap of the magnetic flux can be made possible by the stator, because the respective radial receiving region can be arranged at a small axial distance from the stator. Thus, there are no large losses of the magnetic flux. On the other hand, this embodiment enables an efficient transmission of the flux to the magnetic sensor, which extends in the axial direction and enters axially into the insertion slot between the two flux guides or between the two transmission areas.
  • With regard to the configuration of the insertion shaft or the two flux guides, two alternative embodiments can now be provided:
    On the one hand, the mutual transmission areas can overlap one another in the radial direction. This means that a projection of one flux guide exists in the radial direction on the other flux guide. This embodiment proves to be particularly advantageous when the magnetic sensor is formed flat in the radial direction. The magnetic sensor may be sandwiched between the respective transmission regions of the flux conductors.
  • On the other hand, it can also be provided that the respective transmission regions overlap one another in the circumferential direction. This in turn means that a projection of one flux guide exists in the circumferential direction on the other flux guide. This embodiment is particularly advantageous when the magnetic sensor is made flat in the circumferential direction, so that this magnetic sensor is arranged in a sandwich construction in the circumferential direction between the respective transmission areas.
  • Preferably, in at least one of the flux guides, an axial recess is formed through which the magnetic sensor extends axially therethrough to come into mutual overlap with the transmission region. The recess is preferably a passage opening, which is formed in a transition region or corner region between the transmission region and the reception region of the flux guide. Said recess virtually forms an input of the axial insertion slot, so that by providing such a recess, the magnetic sensor can be inserted axially into the insertion slot even if the two plate-like transfer areas overlap one another in the radial direction.
  • Preferably, the transfer areas are plate-shaped and flat. Additionally or alternatively, the reception areas of the flux conductors can also be plate-shaped and flat. In particular, the transfer areas are in the form of tabs which protrude from the respective receiving areas at a right angle.
  • The respective transmission regions of the flux conductors are preferably arranged parallel to one another in mutual overlap.
  • It proves to be advantageous if the first and the second flux guide are identical components or elements of the same construction. Thus, the design and manufacturing effort in the production of flux conductors is minimal.
  • The flux conductors can be produced in a low-cost stamping and bending process, in which relatively little material waste is obtained.
  • In one embodiment, it is provided that the slider has a fastening region, to which the flux conductors, in particular via the respective radial receiving region, are attached. Thus, the slider also forms at the same time Housing for the flux conductors or is designed as such a housing, so that the use of an additional flux guide housing is unnecessary. Because the flux conductors are attached directly to the slider for the holder, additionally reduces the number of required components and thus also the assembly effort. In addition to the function of a housing for the holder, the slider additionally assumes the function of a housing for the two flux conductors.
  • The attachment region of the slider can have an axial recess, in particular an axial passage opening, into which the flux conductors extend axially. In particular, the respective transmission regions of the flux conductors extend into this axial recess, while the respective receiving regions are connected to the slider. This embodiment has the advantage that, similar to the magnetic sensor, the flux guides can be mounted in the axial direction, so that no radial mounting direction is required, as proposed in the prior art. It therefore basically eliminates the radial mounting direction.
  • The connection of the flux conductors with the slider may be such that bores are formed in the flux conductors, in particular in the respective receiving regions, which holes are placed on corresponding pins of the slider. Subsequently, the free ends of these pins - for example, by ultrasound or by heat - deformed and thereby converted into a rivet head, which ensures a simple and secure attachment of the flux conductors. The said pins or pins extend in particular in the axial direction, so that an axial mounting direction of the flux conductors is ensured.
  • The device may be a multifunctional device: it may additionally have a steering angle sensor device for detecting a steering angle of the steering shaft. Thus, the torque sensor device is integrally formed with the steering angle sensor device as a unit.
  • The steering angle sensor device may comprise a transmission housing for a transmission, by means of which a rotational movement of the steering shaft in a rotational movement of a sensor element - for example a magnet - the steering angle sensor device is transferable. It can be provided that the slider and the gear housing are integrally formed integrally. Thus, the slider assumes a further additional function, namely the function of a housing for the transmission of the steering angle sensor device. Thus, there is no need to provide additional housing, so that the assembly cost is further reduced.
  • It proves to be advantageous if the gear housing is arranged offset in the circumferential direction to the mounting region of the slider or offset from the two flux guides. This means that the gear housing is arranged at an angular distance to the mounting region for the flux conductors. Thus, a more compact in the axial direction device can be created because the two flux conductors on the one hand and the gear housing on the other hand do not overlap each other in the axial direction. The sensor housing can be at least approximately at the same axial height as the two flux conductors.
  • Preferably, a common printed circuit board is provided, on which both the magnetic sensor of the torque sensor device and a sensor of the steering angle sensor device are arranged. It is therefore unnecessary to use a separate board with the associated disadvantages, especially in terms of cost and valuable space.
  • In particular, the magnetic sensor of the torque sensor device is in the axial direction of the circuit board. The magnetic sensor can protrude at a right angle from the circuit board and then extend axially into the insertion slot.
  • In this case, the printed circuit board itself is preferably oriented perpendicular to a longitudinal axis of the steering shaft and radially. This means that, while the magnetic sensor extends in the axial direction, the printed circuit board preferably extends in the radial direction and thus perpendicular to the steering shaft. Thus, the expansion of the device in the axial direction is minimal.
  • Preferably, the above-mentioned gear housing has an axial recess for the transmission of the steering angle sensor device, which further reduces the size of the device in the axial direction.
  • It can also be provided that the common circuit board is received in the axial recess of the transmission housing. The gear housing thus represents on the one hand a housing for the transmission and on the other hand also a housing for the printed circuit board.
  • The gear housing may additionally have an axial passage opening through which a plug of the circuit board is inserted, so that this plug on the other axial Side of the gear housing or the slider can be contacted.
  • The invention also relates to a motor vehicle with a device according to the invention.
  • An inventive method is used for assembling or mounting a torque sensor device from the components mentioned in the independent method claim, wherein between the first flux guide and the second flux guide, an axial insertion slot is formed, in which the magnetic sensor is inserted axially into it.
  • The preferred embodiments presented with reference to the device according to the invention and their advantages apply correspondingly to the motor vehicle according to the invention and to the method according to the invention.
  • Further features of the invention will become apparent from the claims, the figures and the description of the figures. All the features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively indicated combination but also in other combinations or alone.
  • The invention will be explained below with reference to a preferred embodiment, as well as with reference to the accompanying drawings.
  • Showing:
  • 1 a schematic exploded view of a device according to an embodiment of the invention;
  • 2 in a schematic and perspective view of the device in the assembled state;
  • three a schematic representation of a flux guide of the device according to a first embodiment;
  • 4 a printed circuit board with two magnetic sensors, which in each insertion slots between two flux conductors according to three extend into it;
  • 5 a plan view of the arrangement according to 4 ;
  • 6 a schematic representation of a flux guide according to a second embodiment;
  • 7 in a schematic representation of the circuit board with the magnetic sensors, wherein the insertion slots between two flux conductors according to 6 are formed;
  • 8th in a schematic representation of a plan view of the arrangement according to 7 ; and
  • 9 an enlarged view of a slider according to 1 ,
  • An in 1 illustrated device 1 According to one embodiment of the invention comprises both a torque sensor device and a steering angle sensor device. The torque sensor device is used to measure a torque applied to a steering shaft of a motor vehicle. The steering angle sensor device is used to detect the current steering angle of the steering shaft. The device 1 is formed as an integral unit, so that an integral sensor device is provided, which is designed both for detecting the torque and for measuring the steering angle.
  • The steering shaft includes two shaft parts, which are interconnected via a torsion bar, not shown in the figures. At one of the shaft parts becomes a holder 2 rotatably mounted, while on the other shaft part, not shown in the figures magnet - namely permanent magnet, for example in the form of a ring magnet - is held against rotation. The holder may be an integrally formed plastic part and / or a cast component. Optionally, the holder 2 also with one. Metal sleeve or other fasteners such as tabs, hooks, clips and the like may be provided to the holder 2 to attach to the associated shaft part.
  • The holder 2 has two axially juxtaposed cylindrical regions, namely on the one hand a first axial cylindrical portion three and a staggered in the axial direction and concentric with the first region three lying and a slightly smaller diameter having second axial region 4 , The first axial area three is distributed over a plurality of circumferentially distributed struts or spokes 5 with the second axial region 4 connected. Between the struts 5 are axial recesses 6 educated. These recesses 6 represent through holes.
  • The first axial area three of the owner 2 has two axial edge regions, namely, on the one hand, a first outer edge region 7 and on the other hand a second axial edge region B in the second axial edge region 8th is a circumferential flange 9 formed from the first axial region three of the owner 2 protrudes slightly outward in the radial direction and thus forms a circumferential collar or projection.
  • In the first radial edge region 7 are a variety of axial indentations or recesses 10 formed as axial depressions in the outer edge of the axial region three of the owner 2 are formed.
  • The torque sensor device also includes a slider 11 as well as a stator 12 , which in the embodiment of a first stator 13 and a second stator part 14 consists. The stator 12 is formed of a soft magnetic material and serves to conduct the magnetic flux from said magnet toward a first and a second flux guide 15 . 16 and thereby to a first and a second magnetic sensor 17 . 18 , which are designed in particular as Hall sensors.
  • The slider 11 is also in an enlarged view in 9 shown. It has an inner sleeve 19 , which is formed annularly encircling and in which the first axial region three of the owner 2 is added so that the outer circumference of the first area three of the owner 2 on an inner circumference of the sleeve 19 can slide. In this case, the first axial region three of the owner 2 in the sleeve 19 up to the radial flange 9 of the owner 2 plugged in.
  • Each stator part 13 . 14 is formed in one piece and has an annular, flange-like and radially outwardly extending base element 20 respectively. 21 on, as well as a variety of tooth elements 22 respectively. 23 , The tooth elements 22 . 23 stand from the respective base element 20 . 21 in the axial direction, in the direction of the holder 2 out. The tooth elements 22 . 23 thus extend in the axial direction approximately parallel to a rotational axis of the steering shaft. The two stator parts 13 . 14 are the same design, so that the number of tooth elements 22 of the stator part 13 equal to the number of tooth elements 23 of the stator part 14 is.
  • For fastening the stator 12 on the holder 2 on the one hand, the stator part 14 with its tooth elements 23 on the second axial area 4 of the owner 2 attached so that the tooth elements 23 through the recesses 6 between the struts 5 inserted axially therethrough and on an inner periphery of the first axial portion three of the owner 2 be supported. After attaching the stator part 14 on the second area 4 of the owner 2 are the tooth elements 23 inside the first area three of the owner 2 arranged so that only the base element 21 protrudes radially outward.
  • The other stator part 13 is on the holder 2 fixed so that the tooth elements 22 into the interior of the first area three of the owner 2 from the stator part 14 opposite axial end face of the holder 2 be plugged in. The tooth elements slide 22 on the inner periphery of the cylindrical portion three , When assembled, so are the tooth elements 22 each between two adjacent tooth elements 23 of the other stator part 14 , The two stator parts 13 . 14 can be attached to the holder in a variety of ways 2 be fixed.
  • As already stated, the two stator parts 13 . 14 arranged so relative to each other that the tooth elements 22 of the stator part 13 each between two adjacent tooth elements 23 of the second stator part 14 are arranged. This means that in the circumferential direction alternately a toothed element 22 and then a toothed element 23 are arranged.
  • When inserting the tooth elements 22 in the interior of the first axial area three of the owner 2 get the axial, with the base element 20 connected ends of the tooth elements 22 in the indentations 10 in the axial edge area 7 of the owner 2 , The stator part 13 So it is up to the stop (formed by the base element 20 ) in the interior of the holder 2 inserted.
  • The assembly of the stator 12 on the holder 2 So all in all exclusively in the axial direction.
  • For fastening the stator parts 13 . 14 on the holder 2 For example, fixing rings 24 . 25 be provided, which on both axial sides of the holder 2 can be plugged and thus an axial movement of the stator 13 . 14 can prevent. These fastening rings 24 . 25 may be formed, for example, of plastic. You can then use the holder 2 - For example, by welding or by ultrasound or the like - are cohesively connected. However, the invention is not limited to such a fixation of the stator 13 . 14 on the holder 2 limited, and a variety of types of fastening can be provided.
  • As already stated, the torque sensor device has the two magnetic sensors 17 . 18 on which on a circuit board 26 are attached. The magnetic sensors 17 . 18 are formed as electronic components, which of the circuit board 26 in the axial direction under one projecting right angles and running flat overall. The circuit board 26 is flat and plate-shaped and executed arcuate in its plane. This circuit board 26 is a common board for both the torque sensor device and the above-mentioned steering angle sensor device. On the circuit board 26 namely sensor elements of the steering angle sensor device are arranged, as will be described in more detail below.
  • In the same or approximately the same axial height with the annular sleeve 19 has the integrally formed slider 11 a mounting area 27 on, which for fastening the two flux conductors 15 . 16 is trained. In the attachment area 27 is a continuous axial recess 28 formed, which radially adjacent to the sleeve 19 is arranged and in which of the two axial sides, the respective flux guide 15 . 16 be inserted axially into it. In doing so, the flux guides become 15 . 16 attached as follows: The mounting area 27 has respective pins or pins at its opposite axial sides 29 on while the river ladder 15 . 16 corresponding holes 30 respectively. 31 exhibit. The river ladder 15 . 16 can about these holes 30 respectively. 31 on the corresponding pins 29 be plugged, and by deformation or by forming the pins 29 Nietköpfe can be formed, which is an effective and reliable or reliable fixation of the flux conductors 15 . 16 on the slider 11 guarantee.
  • The two flux guides 15 . 16 each have a reception area 32 respectively. 33 on which one on the pins 29 is plugged. These reception areas 32 . 33 are plate-shaped and serve to receive the magnetic flux from the stator 12 or from the respective stator part 13 respectively. 14 , For this purpose, the reception areas are in the assembled state 32 . 33 parallel to the respective base element 20 . 21 the stator parts 13 . 14 arranged so that the reception areas 32 . 33 with the flange-like base elements 20 . 21 overlap one another in the axial direction.
  • From the reception area 32 . 31 are respective transmission ranges 34 respectively. 35 perpendicular from which point in the axial direction. These transmission areas 34 . 35 the river conductor 15 . 16 extend in the assembled state in the axial recess 28 in the attachment area 27 of the slider 11 axially into it, the arrangement of the flux conductors 15 . 16 is described in detail below relative to each other.
  • The two flux guides 15 . 16 can be made of the same material as the stator 12 be formed, so from a soft magnetic material.
  • The slider 11 is further integral with a transmission housing 36 the steering angle sensor device is formed, which for receiving a transmission 37 the steering angle sensor device is used and directly to the sleeve 19 connects radially. This gearbox 36 has an axial recess 38 into which the gearbox 37 is recorded. The gear 37 is then through the circuit board 26 obscured so that the gearbox 36 also for holding the printed circuit board 26 is trained.
  • A main gear 39 is connected to the steering shaft so that it rotates together with the steering shaft. The rotational movement of the steering shaft and thus the main gear 39 will then be on smaller satellites 40 . 41 of the transmission 37 transfer. The satellite 40 carries a permanent magnet, while the satellite 41 a central passage opening 42 in which a pinion 43 is inserted with a tooth structure. The structure of the gearbox 37 corresponds to the structure of the document DE 10 2008 011 448 A1 known transmission. It also carries the pinion 43 a permanent magnet.
  • The gearbox 36 is using a lid 44 axially closed, which has a passage opening 45 for the second axial region 4 of the owner 2 having. On the other axial side is the continuous axial recess 28 of the attachment area 27 of the slider 11 using a smaller lid 46 locked.
  • In 2 is the device 1 shown in the assembled state. To recognize here is also a mounting unit 47 in the form of a fork-shaped receptacle over which the slider 11 can be attached to vehicle parts or can be fixed relative to the steering shaft. The holder 2 can be relative to the slider 11 be rotated, namely together with the steering shaft. In 2 are also the respective tooth elements 23 . 24 the mutual stator parts 13 . 14 to recognize. These tooth elements 23 . 24 are received in depressions, which on the inner circumference of the first axial region three of the owner 2 are formed.
  • In three is a river guide 15 . 16 represented according to an embodiment. It will be at the device 1 two equal flux conductors 15 . 16 so that the number of required components is kept to a minimum. As already stated, each flux conductor has 15 . 16 each a reception area 32 respectively. 33 over which the flux conductor 15 respectively. 16 at the attachment area 27 over the holes 30 respectively. 31 is attached. The reception area 32 respectively. 33 is plate-shaped and extends in the assembled State in the radial direction and perpendicular to the axis of rotation of the steering shaft. The reception area 32 respectively. 33 as well as the basic elements 20 respectively. 21 the stator parts 13 . 14 overlap each other in the axial direction. From the reception area 32 respectively. 33 stand at a right angle a total of two transmission areas 34a respectively. 35a such as 34b respectively. 35b axially, which is for delivering the magnetic flux to the respective magnetic sensors 17 . 18 serve. The two transmission ranges 34a respectively. 35a such as 34b respectively. 35b are designed as plate-like tabs, which are arranged parallel to each other in different radial heights or radially offset from each other. The two transmission ranges 34a respectively. 35a and 34b respectively. 35b then extend into the axial recess 28 of the attachment area 27 into it. In the corner area or transition area between the second transmission area 34b respectively. 35b and the reception area 32 respectively. 33 is an axial recess 48 formed, which is a continuous opening through which one of the magnetic sensors 17 . 18 axially extend to overlap with the transfer area 34b respectively. 35b to get.
  • An arrangement of two such flux guides 15 . 16 in the assembled state is in 4 together with the magnetic sensors 17 . 18 as well as the circuit board 26 shown. How out 4 shows, lie the respective reception areas 32 . 33 parallel to each other and overlap each other in the axial direction. The transmission ranges 34a and 35b are also parallel to each other and overlap in the radial direction, between these transfer areas 34a . 35b an axial slot 49 is formed, in which the first magnetic sensor 17 axially over the recess 48 extends into it so that the magnetic sensor 17 sandwiched between the transmission area 34a on the one hand and the transmission area 35b of the other flux conductor 16 on the other hand is arranged.
  • Accordingly, the transmission ranges are 34b . 35a radially superimposed and overlap each other in the radial direction. These transmission areas 34b . 35a are arranged parallel to each other, between these transmission areas 35a . 34b a second axial insertion slot 50 is formed, in which the second magnetic sensor 18 parallel to the first magnetic sensor 17 extends axially into it. The second magnetic sensor 18 is thus sandwiched between the transmission area 34b of the first flux guide 15 on the one hand and the transmission area 35a of the second flux guide 16 on the other hand.
  • At the common circuit board 26 are also two sensors 51 . 52 arranged to detect the magnetic fields of the satellite 40 on the one hand and the pinion 43 on the other hand serve. Furthermore, at the common circuit board 26 a plug 53 arranged over which the electronic components of the circuit board 26 can be contacted. The plug 53 is via an axial passage opening 54 ( 1 ), which are in the transmission housing 36 is trained.
  • In 5 is the arrangement according to 4 presented from a different angle. In 5 is a plan view of the two flux conductors 15 . 16 shown. How out 5 shows, the magnetic sensors 17 . 18 in the axial direction in the respective insertion shafts 49 . 50 put into it, namely according to the arrow representations 55 . 56 ,
  • In 6 is another embodiment of the flux guide 15 . 16 shown in more detail. In contrast to the embodiment according to three overlap the transmission areas 34a respectively. 35a and 34b respectively. 35b each flux conductor 15 respectively. 16 each other in the circumferential direction. The plate-like transmission areas 34a respectively. 35a and 34b respectively. 35b thus extend parallel to each other and overlap each other. Now become the two flux guides 15 . 16 according to 6 mounted, it creates an arrangement, as in 7 is shown in more detail. The first slot 49 is between the transmission range 35b of the second flux guide 16 on the one hand and the transmission area 34a of the first flux guide 15 educated. The two transmission ranges 35b and 34a overlap each other in the circumferential direction and also overlap the magnetic sensor 17 also in the circumferential direction. Accordingly, the second insertion slot 50 between the transmission area 35a of the river chief 16 on the one hand and the transmission area 34b of the river chief 15 on the other hand trained. The two transmission ranges 35a and 34b Also overlap each other in the circumferential direction and also overlap the second magnetic sensor 18 in the circumferential direction. All transmission ranges 34a . 34b . 35a . 35b are parallel to each other and parallel to the magnetic sensors 17 . 18 arranged.
  • In 7 are the other sensors 51 . 52 (S. 4 ) as well as the plug 53 not shown for clarity.
  • A plan view of the arrangement according to 7 is in 8th shown closer. According to the arrow representations 55 . 56 become the two magnetic sensors 17 . 18 into the respective slots 49 . 50 pushed in axially.
  • Assembling the device 1 as they are in 1 is shown along a single mounting direction, namely along the axial direction. It eliminates the radial mounting direction, so that the device 1 can be mounted very easily and quickly. It also results in a space savings, because the device 1 especially in the axial direction is particularly compact, as this particular 2 evident.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • US 2004/0194560 A1 [0002, 0002, 0006, 0010]
    • DE 10240049 A1 [0002]
    • DE 102007043502 A1 [0003]
    • DE 102008011448 A1 [0004, 0066]

Claims (14)

  1. Contraption ( 1 ) for a motor vehicle, having a torque sensor device for detecting a torque applied to a steering shaft of the motor vehicle, wherein the torque sensor device comprises: - a magnet which is connectable to a first shaft part of the steering shaft, - a holder ( 2 ), which is connectable to a second shaft part of the steering shaft, - one on the holder ( 2 ) arranged magnetic stator ( 12 ), which is used to conduct magnetic flux from the magnet to a first and a second flux guide ( 15 . 16 ) and thereby to a magnetic sensor ( 17 . 18 ) of the torque sensor device is formed, and - a slider ( 11 ) for the holder ( 2 ), the holder ( 2 ) relative to the slider ( 11 ) is rotatable and the slider ( 11 ) for carrying the flux conductors ( 15 . 16 ), characterized in that between the first flux guide ( 15 ) and the second flux guide ( 16 ) an axial insertion slot ( 49 . 50 ) is formed, in which the magnetic sensor ( 17 . 18 ) extends axially into it.
  2. Contraption ( 1 ) according to claim 1, characterized in that the flux conductors ( 15 . 16 ) each in axial overlap with the stator ( 12 ) arranged radial receiving area ( 32 . 33 ) for receiving the magnetic flux from the stator ( 12 ) and at a right angle from the receiving area ( 32 . 33 ) projecting axial transmission area ( 34 . 35 ) for transmitting the magnetic flux to the magnetic sensor ( 17 . 18 ), and that the insertion shaft ( 49 . 50 ) between the respective axial transmission areas ( 34 . 35 ) the flux conductor ( 15 . 16 ) is trained.
  3. Contraption ( 1 ) according to claim 2, characterized in that the respective transmission ranges ( 34 . 35 ) overlap one another in the radial direction.
  4. Contraption ( 1 ) according to claim 2, characterized in that the respective transmission ranges ( 34 . 35 ) overlap one another in the circumferential direction.
  5. Contraption ( 1 ) according to one of the preceding claims, characterized in that in at least one of the flux guides ( 15 . 16 ) an axial recess ( 48 ) is formed, through which the magnetic sensor ( 17 . 18 ) extends axially therethrough.
  6. Contraption ( 1 ) according to one of the preceding claims, characterized in that the first and the second flux guide ( 15 . 16 ) Are elements of the same construction.
  7. Contraption ( 1 ) according to one of the preceding claims, characterized in that the slider ( 11 ) a fastening area ( 27 ), on which the flux conductors ( 15 . 16 ), in particular via the respective radial reception area ( 32 . 33 ) are attached.
  8. Contraption ( 1 ) according to claim 7, characterized in that the fastening area ( 27 ) an axial recess ( 28 ), in particular axial passage opening, into which the flux conductors ( 15 . 16 ) extend axially into it.
  9. Contraption ( 1 ) according to one of the preceding claims, characterized in that the device ( 1 ) further comprises a steering angle sensor means for detecting a steering angle of the steering shaft, which a transmission housing ( 36 ) for a transmission ( 37 ), by means of which a rotational movement of the steering shaft in a rotational movement of a sensor element of the steering angle sensor device is transferable, wherein the slider ( 11 ) in one piece with the transmission housing ( 36 ) is trained.
  10. Contraption ( 1 ) according to claim 7 or 8 and claim 9, characterized in that the transmission housing ( 36 ) offset in the circumferential direction to the attachment area ( 27 ) of the slider ( 11 ) is arranged.
  11. Contraption ( 1 ) according to claim 9 or 10, characterized in that the device ( 1 ) one for the magnetic sensor ( 17 . 18 ) and a sensor ( 51 . 52 ) the steering angle sensor device common printed circuit board ( 26 ) having.
  12. Contraption ( 1 ) according to claim 11, characterized in that the printed circuit board ( 26 ) is arranged perpendicular to a longitudinal axis and radially oriented.
  13. Motor vehicle with a device ( 1 ) according to any one of the preceding claims.
  14. A method for assembling a torque sensor device for detecting a torque applied to a steering shaft of the motor vehicle comprising: a magnet which is connected to a first shaft part of the steering shaft, a holder 2 ), which is connected to a second shaft part of the steering shaft, - a magnetic stator ( 12 ), which on the holder ( 2 ) and for conducting magnetic flux from the magnet to a first and a second flux guide ( 15 . 16 ) and thereby to a magnetic sensor ( 17 . 18 ) of the torque sensor device is formed, and - a slider ( 11 ) for the holder ( 2 ), the holder ( 2 ) relative to the slider ( 11 ) is turned and the slider ( 11 ) for carrying the flux conductors ( 15 . 16 ), characterized in that between the first flux guide ( 15 ) and the second flux guide ( 16 ) an axial insertion slot ( 49 . 50 ) is formed, in which the magnetic sensor ( 17 . 18 ) is inserted axially into it.
DE102012014208.0A 2012-07-18 2012-07-18 Device having a torque sensor device and optionally a steering angle sensor device for a motor vehicle and method for assembling such a device from a plurality of components Pending DE102012014208A1 (en)

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DE102012014208.0A DE102012014208A1 (en) 2012-07-18 2012-07-18 Device having a torque sensor device and optionally a steering angle sensor device for a motor vehicle and method for assembling such a device from a plurality of components

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DE102012014208.0A DE102012014208A1 (en) 2012-07-18 2012-07-18 Device having a torque sensor device and optionally a steering angle sensor device for a motor vehicle and method for assembling such a device from a plurality of components
PCT/EP2013/064920 WO2014012893A2 (en) 2012-07-18 2013-07-15 Device with a torque sensor unit and optionally a steering angle sensor unit for a motor vehicle and method for assembling such a device from a plurality of components
EP13742411.5A EP2875327A2 (en) 2012-07-18 2013-07-15 Device with a torque sensor unit and optionally a steering angle sensor unit for a motor vehicle and method for assembling such a device from a plurality of components

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WO2017118556A1 (en) * 2016-01-08 2017-07-13 Valeo Schalter Und Sensoren Gmbh Torque sensor device for a motor vehicle, electric steering system, and motor vehicle comprising such a torque sensor device

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JP6430562B2 (en) * 2017-03-16 2018-11-28 メレキシス テクノロジーズ エス エー Torque sensor
GB2563941A (en) * 2017-06-30 2019-01-02 Valeo Air Man Uk Limited Electric supercharger

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