Torque sensor device, flux conductor device and flux conductor

Abstract

The present invention relates to a torque sensor device (10) for detecting torque applied to a shaft, a magnetic flux conductor device (16) for thereon, and magnetic flux conductors (16A, 16B), wherein the torque sensor device (10) has a magnetic device (15), a stator device (12), and a magnetic flux conductor device (16), wherein the magnetic flux conductor device (16) has a first magnetic flux conductor (16A) and a second magnetic flux conductor (16B), and the first magnetic flux conductor (16A) and the second magnetic flux conductor (16B) each have a first convergence surface (17) and each have at least one transmission surface (18), wherein the second magnetic flux conductor (16B) further has a second convergence surface (19) magnetically coupled to at least one transmission surface (18) of the second magnetic flux conductor (16B), wherein the first A flux conductor (16A) and a second flux conductor (16B) are designed and arranged relative to each other such that when the torque sensor device (10) is surrounded by an interfering magnetic field (MS), a first interfering flux fraction (FS1) and a second interfering flux fraction (FS2) of the second flux (F2) at least partially cancel each other out. The first interfering flux fraction is at least partially clustered in a first convergence surface (17) of the first flux conductor (16A) and transmitted to the magnetic sensor through at least one transmission surface (18) of the first flux conductor (16A). The second interfering flux fraction is at least partially clustered in a second convergence surface (19) of the second flux conductor (16B) and transmitted to the magnetic sensor (21) through at least one transmission surface (18) of the second flux conductor (16B).

Description

Technical Field

[0001] The present invention relates to a torque sensor device for detecting torque applied to a shaft, and more particularly to a torque sensor device for detecting torque applied to a steering shaft of a motor vehicle, wherein the torque sensor device has a magnetic device, a stator device, and a magnetic flux conductor device.

[0002] Furthermore, the present invention relates to a flux conductor device for a torque sensor device.

[0003] Furthermore, the present invention relates to a flux conductor for a torque sensor device and / or a flux conductor device for a torque sensor device. Background Technology

[0004] Torque sensor devices of this type, especially for steering shafts of motor vehicles, are known in principle from the prior art, for example from patent documents DE 10 2013 006 379 A1 or EP 1 269 133 B1.

[0005] Such torque sensor devices are used, for example, in electric steering systems to control the electric drive motor of the steering system based on the steering torque applied by the driver, so as to provide, for example, corresponding steering assistance.

[0006] Torque sensor devices are typically used in conjunction with an axially split shaft and a torsion bar having a defined, known torsional stiffness, wherein the torsion bar connects a first portion of the axially split shaft to a second portion of the axially split shaft.

[0007] If torque is applied to the shaft, this will cause the two parts of the shaft to twist relative to each other by a measurable angle of torsion, wherein the angle of torsion is adjusted according to the applied torque and the torsional stiffness of the torsion bar, so that the applied torque can be determined from the detected angle of torsion when the stiffness of the torsion bar is a defined, known stiffness.

[0008] Various measurement principles and sensor devices are known for measuring the torsional angle produced by an applied torque. Typically, a magnetic sensor device or system is used, in which a magnetic device having at least one magnetic element (typically a surrounding, ring-shaped magnet designed as a permanent magnet) is torsionally connected to a first portion of the steering shaft, and a stator device having one or more magnetically conductive stators is torsionally connected to a second portion of the shaft. The stator devices are typically arranged concentrically around the magnetic device, particularly the magnetic element, along a radial direction with a small air gap between them. The magnetic flux generated by the magnetic device can be guided through the stator device to a magnetic sensor device having at least one magnetic sensor, such as a Hall sensor, and analyzed. This stator device typically comprises two separate stators, each having a ring-shaped disk region.

[0009] If the magnetic device, particularly the magnetic element of the magnetic device, which is torsionally connected to the first part of the shaft, moves relative to the stator assembly connected to the second part of the shaft due to the torsional motion of the shaft, the magnetic flux density in the stator assembly, particularly in each stator, changes. This change can be detected by means of a magnetic sensor device. The change in magnetic flux density in the stator assembly depends particularly on the magnitude of the relative motion of the magnetic device, particularly the corresponding magnetic element, relative to the stator assembly, particularly relative to each stator, i.e., on the angle of torsion. Therefore, the angle of torsion can be deduced from the detected change in magnetic flux density, and the torque applied to the shaft can be determined based on the angle of torsion, given the torsional stiffness of the torsion bar.

[0010] The magnetic field generated by the magnetic device of the torque sensor device, when superimposed with other magnetic fields, has an undesirable adverse effect on the magnetic flux transmitted to the magnetic sensor device, particularly causing a change in the transmitted magnetic flux density generated by other magnetic fields. This results in erroneous, yet reliable, sensor signals that are not therefore identified as faulty, and thus leads to erroneous torque values. These other magnetic fields represent interfering magnetic fields with respect to the magnetic field of the sensor device, such as the magnetic field of other sensor devices or magnetic fields existing around the torque sensor device, such as the magnetic field of a nearby motor, such as the magnetic field of a motor or generator or the magnetic field of a high-current line.

[0011] Various measures are known from the prior art for reducing the interference sensitivity of torque sensor devices of the aforementioned type.

[0012] Patent document US 2016 / 0091574 A1, for example, suggests that, in order to compensate for interference caused by the magnetic field of other sensor devices, i.e., so-called "crosstalk," at least one additional magnetic element arranged symmetrically with the magnetic element of the other sensor device is provided to compensate for the influence of the magnetic field of the magnetic element of the other sensor device on the actual sensor device. However, this is especially predicated on knowing the direction of the interfering magnetic field.

[0013] For example, a torque sensor device for detecting torque applied to a shaft is known from patent document WO 2020 / 035262 A1. The torque sensor device has a stator device, a magnetic device, and a magnetic sensor device, wherein the magnetic device and the stator device are designed and arranged relative to each other such that a first magnetic flux having a first magnetic flux direction and a second magnetic flux having a second magnetic flux direction opposite to the first magnetic flux direction can be generated by relative movement along the circumference between the magnetic device and the stator device. The magnetic sensor device includes a first magnetic sensor for detecting the first magnetic flux and a second magnetic sensor for detecting the second magnetic flux.

[0014] Patent document DE 10 2007 057 050 A1 discloses a sensor device for measuring torque acting on a shaft with relatively low susceptibility to interference, wherein the shaft has a first shaft section and a second shaft section, and the two shaft sections are capable of twisting relative to each other. The sensor device has at least one magnetic encoder arranged on the first shaft section and a stator arranged on the second shaft section, wherein the stator has two stator elements, each with protruding finger structures, and wherein at least one additional second stator is arranged on the second shaft section, the additional second stator also having two stator elements, each with protruding finger structures, and these stators are associated with the magnetic encoder.

[0015] In addition, patent document DE 10 2018 112 930 A1 discloses a determining device for determining the steering torque of a vehicle's steering mechanism. The determining device has a steering shaft with a first shaft section and a second shaft section. The second shaft section is coaxially arranged behind the first shaft section and is mechanically and effectively connected to the first shaft section in a torsional manner. The determining device further includes a magnetic element for generating a magnetic field and a magnetic field receiving element for guiding magnetic field lines away from or towards the magnetic element. Furthermore, the magnetic element is torsionally arranged on the first shaft section, and the magnetic field receiving element is torsionally arranged on the second shaft section. The determining device has at least one magnetically conductive element connected to the magnetic receiving element via a first magnetic flux connection and a second magnetic flux connection to form a magnetic field loop that is at least partially closed and has a magnetic field flow direction. A first magnetic sensor is arranged in the first magnetic flux connection, and a second magnetic sensor is arranged in the second magnetic flux connection. The magnetic field flow direction through the first magnetic sensor in the first magnetic flux connection is different from the magnetic field flow direction through the second magnetic sensor in the second magnetic flux connection. Summary of the Invention

[0016] Against this backdrop, the technical problem to be solved by the present invention is to provide an alternative, particularly improved, torque sensor device, especially the following torque sensor device, in which at least one external interfering magnetic field existing in the surrounding environment of the torque sensor device has a relatively small impact on the torque value to be determined. Another technical problem to be solved by the present invention is to provide an alternative, particularly improved, magnetic flux conductor device and an alternative, particularly improved, magnetic flux conductor, especially the following magnetic flux conductor device and magnetic flux conductor, by means of which the influence of at least one external interfering magnetic field existing in the surrounding environment of the torque sensor device on the torque value to be determined can be reduced.

[0017] The aforementioned technical problems are solved by a torque sensor device according to the invention, a flux conductor device according to the invention, and a flux conductor according to the invention, having the features according to the respective independent claims. Preferred embodiments of the invention are the subject of the dependent claims, the specification, and the drawings, and are described in detail below.

[0018] The torque sensor device according to the invention for detecting torque applied to a shaft, particularly torque applied to the steering shaft of a motor vehicle, comprises a magnetic device, a stator device, and a flux conductor device. The magnetic device is designed to generate at least one useful magnetic field, and the magnetic device and the stator device are circumferentially movable relative to each other about the central axis of the torque sensor device by the applied torque. This circumferential relative movement between the magnetic device and the stator device generates a useful magnetic flux in the stator device based on the torque applied to the torque sensor device. A first interference magnetic flux can also be generated in the stator device based on an interfering magnetic field surrounding the torque sensor device.

[0019] The flux conductor device is specifically designed here to at least partially focus magnetic flux, particularly magnetic flux generated in the stator assembly, and to transmit the magnetic flux to the magnetic sensor device, and preferably also to enhance the magnetic flux. The flux conductor device has a first flux conductor and a second flux conductor, wherein the first flux conductor and the second flux conductor each have a first focusing surface and at least one transmitting surface, wherein the first focusing surface is designed to at least partially focus and / or at least partially transmit the useful magnetic flux generated in the stator assembly according to the applied torque and / or the first interfering magnetic field generated according to the interfering magnetic field surrounding the torque sensor device.

[0020] At least one transmission surface of the first magnetic flux conductor and at least one transmission surface of the second magnetic flux conductor are arranged opposite each other such that an axial gap is formed between the transmission surfaces, and at least one magnetic sensor of the magnetic sensor device can be arranged in the axial gap, wherein a first magnetic flux in the first magnetic flux conductor can be transmitted to the magnetic sensor of the magnetic sensor device arranged in the axial gap through at least one transmission surface of the first magnetic flux conductor, wherein the first magnetic flux may in particular include a useful magnetic flux portion and / or a first interfering magnetic flux portion, and a second magnetic flux bundled in the second magnetic flux conductor can be transmitted to the magnetic sensor through at least one transmission surface of the second magnetic flux conductor.

[0021] The torque sensor device according to the invention is characterized in that the second flux conductor further has a second convergence surface magnetically coupled to at least one transmission surface of the second flux conductor, the second convergence surface being designed to generate or at least partially converge and transmit a second interference flux according to an interfering magnetic field surrounding the torque sensor device, wherein the first flux conductor and the second flux conductor are respectively designed and arranged relative to each other such that when the torque sensor device is surrounded by an interfering magnetic field, a first interfering flux fraction of the first flux and a second interfering flux fraction of the second flux at least partially cancel each other out, particularly at least partially canceling each other out in the gap formed by the transmission surface, the first interfering flux fraction at least partially converged in the first convergence surface of the first flux conductor and transmitted to the magnetic sensor through at least one transmission surface of the first flux conductor, and the second interfering flux fraction at least partially converged in the second convergence surface of the second flux conductor and transmitted to the magnetic sensor through at least one transmission surface of the second flux conductor.

[0022] By means of such a flux conductor device having at least one flux conductor, it is possible to reduce the flux generated by the interfering magnetic field and concentrated in the flux conductor device, which causes or may cause undesirable adverse effects or distortions on the torque sensor signal generated by the torque sensor device. This flux conductor has two converging surfaces, or in a corresponding design of the flux conductor device and in the case of a correspondingly designed external interfering magnetic field, i.e., an interfering magnetic field surrounding the torque sensor device, particularly in its direction, it is even possible to completely eliminate the flux. Furthermore, this does not, in particular, have the mandatory requirement of a second magnetic sensor and / or a second magnetic element and / or an additional stator as exemplarily suggested by the solutions exemplarily mentioned above by the prior art.

[0023] Rather, the present invention achieves, in some cases, complete compensation, of the (first) interfering magnetic flux generated by an external interfering magnetic field and concentrated in the magnetic flux conductor device using only a second magnetic flux conductor. This reduction or compensation of the (first) interfering magnetic flux can be achieved, in particular, through an advantageous design of the two magnetic flux conductors combined with their advantageous arrangement relative to each other, especially through the position and orientation of the convergence and / or transmission surfaces of the two magnetic flux conductors relative to each other within the magnetic flux conductors, and through the design, position, and orientation of the two magnetic flux conductors relative to each other. The position and / or orientation of the convergence and / or transmission surfaces of the two magnetic flux conductors can particularly influence the direction of the portion of the interfering magnetic flux generated by the interfering magnetic field, concentrated by the magnetic flux conductors, and transmitted through the transmission surfaces.

[0024] In particular, through the advantageous arrangement of the two gathering surfaces of the second flux conductor and the transmission surface relative to at least one transmission surface and gathering surface of the first flux conductor, it is possible, especially in conjunction with the advantageous fit of the size of the gathering surface, to reduce and, in some cases even completely compensate for, the share of interfering flux generated by the surrounding interfering magnetic field.

[0025] The present invention thus provides a particularly simple and therefore inexpensive, robust torque sensor device, and in particular a simple and inexpensive torque sensor device robust to scattered magnetic fields relative to external interfering magnetic fields present in the surrounding environment of the sensor device.

[0026] Torque sensor devices for detecting torque applied to a shaft, particularly torque sensor devices for detecting torque applied to the steering shaft of a motor vehicle, and especially the structure and operating principle of such torque sensor devices, are generally known to those skilled in the art from the prior art. They are particularly known from patent documents DE 10 2013 006 379 A1 or EP 1269 133 B1, and further information regarding the basic operating principle and basic construction of the torque sensor device according to the invention is detailed herein with reference to those documents.

[0027] The torque sensor device according to the invention is preferably designed to detect torque applied to a shaft, wherein the shaft has a first portion and a second portion capable of torsion relative to the first portion, and the first and second portions of the shaft are connected to each other, particularly by means of a torsion bar. The torque sensor device according to the invention is particularly designed to detect the torsion of the first portion of the shaft relative to the second portion of the shaft. Given the torsional stiffness of the torsion bar, the applied torque can be determined from the detected torsion of the shaft.

[0028] The magnetic device preferably has at least one magnetic element for generating at least one magnetic field, and the at least one magnetic element of the magnetic device is particularly capable of being arranged concentrically relative to the shaft, i.e., arranged such that the central axis of the torque sensor device is aligned with the axis of rotation of the shaft, wherein the magnetic device, especially at least one magnetic element of the magnetic device, is particularly capable of being torsionally connected to the first part of the shaft.

[0029] In an advantageous design of the torque sensor device according to the invention, the polarity of the magnetic device, particularly at least one magnetic element, is constant, especially along the axial direction. This allows for the particularly simple and therefore inexpensive manufacture of the magnetic element.

[0030] At least one magnetic element of the magnetic device is preferably a permanent magnet, especially a completely closed toroidal magnet or a magnet similar to a toroidal magnet that is almost closed along the circumference. The magnetic element may in particular have a plurality of toroidal magnet segments or corresponding pole pairs with opposite polarities, the pole pairs being arranged adjacent to each other with opposite polarities along the circumference, wherein, in particular, two adjacent segments with opposite polarities constitute a pole pair.

[0031] If the magnetic device has one or more other magnetic elements, the other magnetic elements are particularly preferably designed as described above and arranged concentrically with at least one magnetic element.

[0032] "Magnet similar to a toroidal magnet" is understood within the scope of this invention to mean a magnet, especially a permanent magnet, which, although not completely closed along the circumference, is designed to function in the same way as a toroidal magnet that is almost, especially completely, designed to be completely closed.

[0033] The stator assembly is preferably also able to be arranged concentrically with the shaft and, in particular, able to be torsionally connected to the second part of the shaft.

[0034] In an advantageous design of the torque sensor device according to the invention, the stator device is arranged concentrically with the magnet device, particularly with at least one magnet element, wherein the stator device is arranged to at least partially surround the magnet device, preferably at least partially surround at least one magnet element, and particularly has a defined air gap therebetween.

[0035] The stator device is used here, and preferably designed, to guide the magnetic flux of the magnetic field generated by the magnet device to the flux conductor device.

[0036] In an advantageous design of the torque sensor device according to the invention, the stator device particularly has a first stator and a second stator, which are arranged concentrically with each other along a central axis, wherein magnetic flux can be generated in the stator device by the relative circumferential movement between the magnet device and the stator device, particularly by generating magnetic flux in the first stator and in the second stator respectively, particularly by generating magnetic flux simultaneously in the first stator and in the second stator respectively.

[0037] In an advantageous design of the torque sensor device according to the invention, the first and / or second stators particularly have an annular disc-shaped stator body and connecting plates extending axially away from the stator body, wherein the connecting plates are arranged particularly circumferentially, especially uniformly distributed with gaps between them, wherein the connecting plates extend axially away from the respective stator body, and wherein the first and second stators are preferably designed and arranged such that the connecting plates of the first stator and the connecting plates of the second stator extend axially from the respective stator body toward the other stator and engage with each other, particularly with the connecting plates of the other stator, offset from each other.

[0038] In an advantageous design of the torque sensor device according to the invention, the stator bodies of the first and / or second stators have radially inner edges and radially outer edges, respectively, wherein the connecting plate extends away from the ground, particularly all toward the same side, i.e., toward the same direction, from the radially inner edge of the annular disc-shaped stator body.

[0039] The directional designation "axial" here refers, in a technically conventional manner, to the direction parallel to the axis of rotation of the shaft or to the direction parallel to the central axis of the torque sensor device. "Circumferential" correspondingly refers to the direction of rotation about the axis of rotation or the central axis. "Radial" refers to the direction perpendicular to both the axial and circumferential directions. "Tangential" correspondingly refers to the direction perpendicular to both the axial and radial directions.

[0040] The number of pole pairs along the circumference of at least one magnetic element of the magnetic device is particularly preferably corresponding to the number of connecting plates of the first and / or second stators. For torque sensor devices used in motor vehicles, especially passenger cars (PKW), it has proven particularly advantageous to have eight connecting plates for the first and second stators.

[0041] At least one flux conductor of the torque sensor device can be arranged on the stator and directly fixed to it, or indirectly housed within the torque sensor device via a holding device. However, the flux conductor can also be arranged on the housing of the torque sensor device. The key point is that the flux conductor is arranged and positioned within the torque sensor device such that the relevant flux can be respectively focused within the flux conductor and transmitted to at least one magnetic sensor of the torque sensor device via the flux conductor through at least one relevant transmission surface.

[0042] In another advantageous design of the torque sensor device according to the invention, the first stator and the second stator are arranged spaced apart from each other, particularly along the axial direction, and at least one magnetic flux conductor is located at least partially along the axial direction between the first stator and the second stator.

[0043] However, it is also feasible in principle for at least one flux conductor to be arranged axially, i.e., along the central axis, outside the stator assembly. However, the focusing surface and the transmission surface(s) are designed and oriented such that the fluxes bundled by the focusing surface are, according to the invention, at least partially, preferably almost completely or completely canceled out, the fluxes generated by the surrounding interfering magnetic field.

[0044] In an advantageous design of the torque sensor device according to the invention, the torque sensor device further includes a magnetic sensor device, which has at least a first magnetic sensor for detecting magnetic flux bundled (and preferably reinforced by a magnetic flux conductor) and transmitted by the magnetic flux conductor device. The magnetic sensor device, in particular at least one of its magnetic sensors, is designed to generate a sensor signal based on the torque applied to the torque sensor device or based on the torque applied to a shaft connected to the torque sensor device. The magnetic sensor device may include one or more magnetic sensors, in particular a first magnetic sensor and a second magnetic sensor, wherein at least one magnetic sensor is preferably arranged in the axial gap formed by the transmission surfaces of the first and second magnetic flux conductors.

[0045] The magnetic sensor device has at least one magnetic sensor, preferably at least the first and second magnetic sensors, and especially all magnetic sensors, which can be simple Hall sensors. The Hall sensors can detect the magnetic flux density of the magnetic field extending perpendicular to the sensor surface of the Hall sensor or the proportion of the magnetic flux density of the magnetic field extending perpendicular to the sensor surface. The first magnetic sensor, and especially all magnetic sensors, are particularly preferably arranged with the housing fixed, that is, stationary or fixed in position relative to a rotatable axis.

[0046] In a particularly advantageous design of the torque sensor device according to the invention, due to significant space savings or structural space savings, at least one magnetic sensor of the magnetic sensor device, especially at least the first and second magnetic sensors, are SMD magnetic sensors, wherein the magnetic sensors are particularly arranged on a printed circuit board, the printed circuit board being oriented with its plane oriented normally relative to the central axis of the stator device or the torque sensor device. This enables a particularly compact design of the torque sensor device according to the invention.

[0047] “SMD” stands for Surface-Mount Device. Unlike the “wired” components used for Through Hole Technology (THT) mentioned above, SMD components do not have wire connectors. Instead, they can be directly soldered to printed circuit boards via solderable transfer surfaces.

[0048] However, in an alternative design of the torque sensor device according to the invention, at least one magnetic sensor of the magnetic sensor device can also be a wired magnetic sensor with connecting pins, wherein the magnetic sensor is preferably arranged such that the connecting pins point radially outward. This allows for a compact arrangement, particularly in cases where the connecting pins of the wired magnetic sensors are soldered to a printed circuit board oriented with its printed circuit board plane parallel to the central axis of the stator assembly or torque sensor device. Alternatively, the connecting pins can also be connected to a punched grid, particularly directly inserted into the punched grid, especially to a punched grid whose punched grid plane is oriented with its punched grid plane parallel to the central axis of the stator assembly. This also allows for a compact arrangement using wired magnetic sensors.

[0049] In an advantageous design of the torque sensor device according to the invention, the torque sensor device further includes a control device designed to determine the torque applied to the shaft functionally connected to the torque sensor device based on a magnetic flux detected by a magnetic sensor device or based on a sensor signal generated based on the detected magnetic flux.

[0050] The magnetic sensor device of the torque sensor device according to the present invention can also have two or more magnetic sensors, particularly a first magnetic sensor and a second magnetic sensor. This particularly enables redundant analysis or provision of torque sensor signals, thereby improving the functional reliability of the torque sensor device.

[0051] If the torque sensor device according to the invention has a first magnetic sensor and a second magnetic sensor, the second magnetic sensor is particularly preferably arranged parallel to the first magnetic sensor, preferably arranged in a plane with the first magnetic sensor, especially in a common plane perpendicular to the central axis. This allows the two magnetic sensors to be fixed on a common board or printed circuit board, especially for the case where the two magnetic sensors are SMD magnetic sensors, wherein the printed circuit board preferably extends in a plane perpendicular to the central axis. In this case, at least one flux conductor particularly has two transmission surfaces, wherein the two transmission surfaces of the flux conductor are preferably arranged in a plane.

[0052] If the magnetic sensor device has multiple magnetic sensors, then at least one flux conductor has multiple transmission surfaces, particularly for each magnetic sensor, with a corresponding transmission surface. In this case, a first convergence surface, and, in the presence of a second convergence surface, the first and second convergence surfaces are respectively magnetically coupled to, and particularly magnetically connected to, the corresponding flux conductor's transmission surface. The flux conductor is designed such that the flux bundled and / or enhanced in the corresponding flux conductor according to the invention can preferably be transmitted through each transmission surface to the magnetic sensor device, particularly to the magnetic sensor associated with the corresponding transmission surface. That is, in the case of two magnetic sensors, the first flux conductor preferably has a first transmission surface and also a second transmission surface for transmitting and / or conducting the flux bundled in the corresponding flux conductor.

[0053] However, multiple magnetic sensors can also be arranged adjacent to the same transmission surface, i.e., receiving the first and / or second magnetic flux through the same common transmission surface. The first magnetic flux conductor may, for example, have one of two transmission surfaces arranged in a common plane, and the second magnetic flux conductor may similarly have a common transmission surface opposite to the transmission surface of the first magnetic flux conductor. However, the second magnetic flux conductor may also, for example, have two separate transmission surfaces, each forming a gap with the common transmission surface, in which the magnetic sensors are arranged or can be arranged. The first magnetic flux conductor may also have two separate transmission surfaces, which can be arranged opposite to the two separate transmission surfaces of the second magnetic flux conductor or opposite to the common transmission surface of the second magnetic flux conductor.

[0054] However, it is particularly preferred that the two magnetic flux conductors each have two transmission surfaces, wherein the transmission surfaces of the first magnetic flux conductor are arranged parallel to and preferably overlap each other with a gap, and the magnetic sensors extend radially into the gap. The first magnetic sensor is preferably, in particular, arranged in the axial gap between the first transmission surfaces of the two magnetic flux conductors, and extends radially into the gap between the first transmission surfaces, particularly parallel to the first transmission surfaces, while the second magnetic sensor extends particularly into the axial gap between the second transmission surfaces of the two first and second magnetic flux conductors.

[0055] Particularly preferred is that the torque sensor device according to the invention is designed in this case such that the magnetic sensor can be arranged in a plane, particularly on the same printed circuit board or board. This results in a particularly advantageous design of the torque sensor device according to the invention. If an SMD magnetic sensor is used, a torque sensor device with a smaller construction height and thus a smaller construction space requirement along the axial direction, i.e., along the central axis, can be provided.

[0056] For particularly low construction heights, the printed circuit board can have a lower thickness in the region of one or more magnetic sensors or in the region of one or more transfer surfaces than in the rest of the region. This reduction in thickness can be achieved, for example, by corresponding slots or one or more recesses formed on the bottom side of the printed circuit board, particularly in the region, where the transfer surfaces facing the bottom side of the printed circuit board can be inserted into or extend into the slots or recesses.

[0057] The first and second magnetic flux conductors, especially the multiple convergence surfaces and multiple transmission surfaces of the first and second magnetic flux conductors, are preferably designed and arranged relative to each other and magnetically coupled in such a way that they are dimensionally adapted to each other and dimensionally adapted relative to the corresponding surface of another magnetic flux conductor, such that the first interfering magnetic flux fraction generated and converged by the interfering magnetic field and the second interfering magnetic flux fraction generated and converged by the interfering magnetic field are preferably oriented in opposite directions in the gap between the transmission surfaces and have the same amount or the same intensity, i.e., the same size.

[0058] Particularly preferred is that the second magnetic flux conductor is arranged opposite to the first magnetic flux conductor along the direction of the central axis, and especially arranged such that the first convergence surface of the second magnetic flux conductor is arranged parallel to the first convergence surface of the first magnetic flux conductor, and especially opposite to each other, wherein the first convergence surface is designed to be completely identical.

[0059] To reduce component diversity or variation and thus reduce the cost of torque sensor devices, the second flux conductor is particularly preferably designed the same as the first flux conductor, i.e., especially geometrically identical or a common component. However, the second flux conductor is preferably arranged rotated 180° relative to the first flux conductor, such that the first and second gathering surfaces and (multiple) transmission surfaces are respectively arranged opposite each other and form an axial gap.

[0060] In another advantageous design of the torque sensor device according to the invention, at least one, and preferably all, magnetic flux conductors are blanked or bent, and are made of sheet metal, particularly preferably of a soft magnetic material as is commonly known in the art. This makes it possible to manufacture magnetic flux conductors with good magnetic properties in a particularly simple, inexpensive, and geometrically flexible manner.

[0061] In a particularly advantageous design of the torque sensor device according to the invention, the first flux conductor also has a second convergence surface, wherein the second convergence surface of the first flux conductor is magnetically coupled to at least one transmission surface of the first flux conductor and is also designed to generate or at least partially converge and transmit a second interference flux based on the interfering magnetic field surrounding the torque sensor device, wherein the first flux conductor and the second flux conductor are respectively designed and arranged relative to each other such that when the torque sensor device is surrounded by the interfering magnetic field, the first interfering flux fraction and the second interfering flux fraction of the first flux at least partially cancel each other out, the first interfering flux fraction is at least partially converged in the first convergence surface of the second flux conductor and transmitted to the magnetic sensor through at least one transmission surface of the second flux conductor, and the second interfering flux fraction is at least partially converged in the second convergence surface of the first flux conductor and transmitted to the magnetic sensor through at least one transmission surface of the first flux conductor.

[0062] This further improves the robustness of the torque sensor device. On the one hand, the opposite external interference field that causes the first interference flux share in the first convergence surface of the second flux conductor can also be at least partially or almost completely or completely compensated. On the other hand, the first interference flux share generated in the first convergence surface of the first flux conductor can be further reduced or compensated, because the coupling of the second interference flux bundled by the second convergence surface of the second flux conductor into the stator device can be reduced or, in some cases, even completely avoided through other second convergence surfaces of the first flux conductor, wherein the second interference flux share in this case particularly preferably flows out to the surrounding environment through the second convergence surface of the first flux conductor.

[0063] The second convergence surface of the first magnetic flux conductor is preferably arranged parallel to the second convergence surface of the second magnetic flux conductor, especially along the direction of the central axis, and is particularly preferably designed to be completely consistent with the second convergence surface of the second magnetic flux conductor.

[0064] In another advantageous design of the torque sensor device according to the invention, at least one first convergent surface and / or second convergent surface and / or at least one first transmission surface, (in the case of multiple transmission surfaces) in particular all transmission surfaces, extend at least partially, in particular almost completely or entirely, in a plane extending perpendicular to the central axis of the torque sensor device, i.e., in a plane normal to the central axis, or in a plane extending normally relative to the central longitudinal axis, i.e., in a plane orthogonal to the central axis. This allows for a particularly simple arrangement of the convergent surfaces of the magnetic flux conductors to compensate for interfering magnetic flux, which is advantageous or desirable.

[0065] If at least one first convergent surface and / or second convergent surface of the flux conductor extends particularly radially and circumferentially, it is possible to provide a particularly advantageous flux conductor, especially a particularly compact and efficient flux conductor.

[0066] The first and / or second convergent surfaces of at least one flux conductor can be designed, in particular, as annular segments. This is especially advantageous in terms of radial construction space requirements for the torque sensor device when the first convergent surface of at least one flux conductor is designed in this way, since the first convergent surface can be arranged within the required construction space of the stator device in the corresponding design with almost no additional space requirements.

[0067] However, at least one gathering surface can also be designed as a rectangle, such as a square or similar shape, or as an ellipse, kidney, or similar shape. Essentially, it is important that the gathering surface satisfies and realizes the desired function and sufficiently gathers the desired magnetic flux in the desired magnetic flux direction and transmits the magnetic flux to the associated flux conductor(s) in the desired magnetic flux direction, especially in a magnetic flux direction favorable to the function of the torque sensor device.

[0068] In another feasible and advantageous design of the torque sensor device according to the invention, the first and / or second convergence surfaces of at least one flux conductor have particularly similar or identical shapes. Alternatively or additionally, the first convergence surface of one of the two flux conductors and the second convergence surface of the other flux conductor can each have particularly similar or identical shapes, wherein the first and second convergence surfaces can be designed to be completely identical. If the first and second convergence surfaces have corresponding positions, dimensions, and orientations relative to each other, then good compensation for the magnetic flux generated by the interfering magnetic field can be achieved, particularly through the similar focusing characteristics of the two convergence surfaces of the flux conductors. However, the convergence surfaces of the flux conductors can also be designed differently in principle.

[0069] In another feasible and advantageous design of the torque sensor device according to the invention, at least one transmission surface is preferably designed as rectangular, particularly similar to the geometry of the associated magnetic sensor. This allows for efficient transmission of the bundled, synthesized magnetic flux in the flux conductor from the transmission surface to or coupled into the magnetic sensor device, particularly the corresponding associated magnetic sensor arranged adjacent to the transmission surface with a defined gap.

[0070] In an advantageous design of the torque sensor device according to the invention, the first and / or second aggregation surface and / or one of the transmission surfaces, especially all of the transmission surfaces, are respectively designed in a plate-like or disc-like manner, wherein the thickness of the magnetic flux conductor along the central axis, i.e. parallel to the central axis, in the region of the first and / or second aggregation surface and / or at least one transmission surface, especially all of the transmission surfaces, is much smaller than the thickness along the radial and circumferential directions.

[0071] In another advantageous design of the torque sensor device according to the invention, the second convergence surface of at least one flux conductor preferably extends at least partially, especially almost completely or completely, parallel to the first convergence surface of the associated flux conductor, particularly in a plane different from the first convergence surface. This allows for particularly good compensation of the flux generated by the interfering magnetic field, especially for particularly good compensation of the first interfering flux fraction.

[0072] At least one of the transmission surfaces of the flux conductor is particularly preferably at least partially, especially almost entirely or completely, extending in a plane different from the first convergence surface and / or different from the second convergence surface. This allows for the provision of a flux conductor advantageous for compensating for magnetic flux generated by interfering magnetic fields in a simple manner.

[0073] In another particularly advantageous and therefore preferred design of the torque sensor device according to the invention, at least one transmission surface of at least one flux conductor extends at least partially, especially almost entirely or completely, in a plane located between the first and second convergence surfaces along the direction of the central axis, i.e., in a plane located axially between the first and second convergence surfaces of the associated flux conductor. In this way, the flux generated by the interfering magnetic field can be compensated particularly well, especially in the gap between the transmission surfaces, particularly the first interfering flux fraction.

[0074] In another advantageous design of the torque sensor device according to the invention, the first convergence surface of at least one flux conductor is preferably arranged radially at least partially, preferably almost completely or completely, within the stator assembly, and particularly at least partially overlapping the stator assembly radially. This enables the provision of a torque sensor device that is particularly compact, especially radially and / or axially.

[0075] If the stator assembly has a stator as described, the stator having an annular disk-shaped stator body, then the first convergence surface of at least one flux conductor is preferably arranged to at least partially overlap, and preferably completely overlap, the annular disk-shaped stator body in the radial direction, wherein the first convergence surface preferably does not extend radially beyond the outer edge of the annular disk. This allows for the provision of a torque sensor device that is particularly compact, especially in the radial direction.

[0076] In another particularly advantageous design of the torque sensor device according to the invention, at least one second convergence surface of the flux conductor extends further outward radially than the first convergence surface of the associated flux conductor and / or is arranged further outward radially than the first convergence surface of the associated flux conductor.

[0077] In other words, the centroid of the second convergence surface of at least one flux conductor is preferably further radially away from the central axis than the first convergence surface of the associated flux conductor. This reduces the concentration of flux generated by the useful magnetic field and strengthens the concentration of flux generated by the interfering magnetic field surrounding the torque sensor device within the second convergence surface. This reduces the undesirable reduction in flux dependent on the useful magnetic field while improving compensation for flux dependent on the interfering magnetic field. The further outward the second convergence surface is arranged radially, the greater the proportion of flux generated by the interfering magnetic field, which can be converged by the second convergence surface and has a second flux direction. Therefore, the proportion of flux generated by the interfering magnetic field and converged in the first convergence surface that can be balanced or compensated is also greater.

[0078] The first focusing surface is preferably arranged as close as possible to the stator assembly so as to effectively focus the magnetic flux generated in the stator assembly, especially along the radial direction, and in particular, to effectively focus the magnetic flux generated by the useful magnetic field in the stator assembly, based on which a torque signal is generated.

[0079] In a feasible design of the torque sensor device according to the invention, which is particularly advantageous in terms of axial structural space requirements, at least one magnetic flux conductor, particularly preferably the entire first convergence surface and / or second convergence surface and / or at least one transmission surface of the respective magnetic flux conductor, especially all of the transmission surfaces, are preferably arranged axially within the stator assembly, particularly axially, i.e., arranged between the annular disks of the first and second stators or axially between the annular disk-shaped stator bodies, i.e., arranged axially at a height within the stator assembly along the central axis, particularly at least partially arranged laterally beside the stator assembly, wherein the second convergence surface of at least one magnetic flux conductor is particularly arranged axially at the height of the stator assembly. This enables a particularly compact design of the torque sensor device according to the invention, especially along the axial direction.

[0080] If the second convergence surface of at least one flux conductor is arranged axially at the height of the stator assembly, preferably arranged radially at least partially, preferably almost completely or completely outside the stator assembly, and especially arranged radially without overlapping with the stator assembly, then in order to concentrate the magnetic flux generated by the interfering magnetic field surrounding the torque sensor device in the second convergence surface of at least one flux conductor as well as possible.

[0081] In an alternative, yet equally feasible, design, at least one second convergent surface of the flux conductor may also be arranged axially above or below the stator assembly, particularly at a defined distance from the stator assembly, especially at the defined minimum distance, to reduce or substantially, especially to completely, prevent flux coupling generated in the stator assembly into the second convergent surface. In this case, the second convergent surface of at least one flux conductor may also be arranged axially at least partially or completely within the stator assembly and, particularly, overlapping the stator assembly. However, it is important that the second convergent surface be arranged axially at a defined distance from the stator assembly, especially at the defined minimum distance, to reduce or prevent flux coupling generated in the stator assembly into the second convergent surface.

[0082] In order to properly compensate, and especially to compensate as completely as possible, the first interference magnetic flux fraction generated by the interfering magnetic field in the first convergence surface and distorting the useful torque signal, the second interference magnetic flux fraction generated by the interfering magnetic field and converged by the second convergence surface should have the same amount as the first interference magnetic flux fraction in the gap between the transmission surfaces, but have a magnetic flux direction opposite to the first interference magnetic flux fraction.

[0083] The amount of interference flux fraction bundled by the second focusing surface can be influenced by the size of the second focusing surface of the corresponding flux conductor, especially for the defined interference magnetic field, so as to well compensate for the first interference flux fraction generated in the stator device, especially bundled by another flux conductor.

[0084] Therefore, in another advantageous design of the torque sensor device according to the invention, the size of the second convergence surface is chosen such that the second interference magnetic flux generated by the defined interference magnetic field having a defined field direction surrounding the torque sensor device and converged by the second convergence surface has such a size that, preferably in the axial gap between at least one transmission surface of the first flux conductor and at least one transmission surface of the second flux conductor, a defined share of the first interference magnetic flux is compensated, in particular at least 25%, 50%, or 75% of the share of the first interference magnetic flux generated by the interference magnetic field is compensated.

[0085] That is, the size of the second gathering surface of at least one flux conductor is preferably selected such that, in the presence of a defined interfering magnetic field with a defined field direction surrounding the torque sensing device, the flux generated by the interfering magnetic field and bundled in the first gathering surface of another flux conductor is at least partially balanced or compensated by the second flux generated by the interfering magnetic field and bundled by the second gathering surface, especially at least 25%, 50%, or 75%, especially completely, i.e., 100%, balanced or compensated, thereby reducing or completely avoiding the undesirable effects or distortions of the synthesized flux due to the interfering magnetic field, which is generated according to the useful magnetic field and transmitted to the magnetic sensor device through the transmission surface, and the synthesized flux on the magnetic sensor contains only a small portion of the interference or no portion of the interference.

[0086] The second convergence surface of at least one magnetic flux conductor is particularly preferably designed, and especially the size of the second convergence surface is chosen such that the synthesized magnetic flux acting on the magnetic sensor depends only on the useful magnetic field or the applied torque and the relative motion between the magnetic device and the stator device, and not on the interfering magnetic field.

[0087] It has been proven particularly advantageous that the area of ​​the second aggregation surface is about 75%, 100%, 125%, 150%, 200%, or 250% of the area of ​​the first aggregation surface of the associated and / or other magnetic flux conductor, and up to about 100%, 150%, 200%, 250%, or 300% of the area of ​​the first aggregation surface of the associated and / or other magnetic flux conductor.

[0088] In another advantageous design of the torque sensor device according to the invention, the second convergence surface of at least one flux conductor is at least as large as, preferably about or exactly as large as, the first convergence surface of the associated flux conductor and / or another flux conductor, i.e., the same size, or at least 1.3 times, 1.5 times, 2 times, 2.5 times or 3 times, and most especially 4 times, the first convergence surface.

[0089] In another particularly advantageous and therefore preferred design of the torque sensor device according to the invention, at least one flux conductor has a connecting section through which a first convergence surface and a second convergence surface of at least one flux conductor are magnetically coupled to each other, and in particular connected, wherein the connecting section is particularly preferably parallel to the central axis and extends radially and / or parallel to the central axis and extends circumferentially.

[0090] Furthermore, the first aggregation surface and / or the second aggregation surface are also connected to at least one transmission surface via the connecting section and / or via at least one other connecting section, wherein the other connecting sections are particularly capable of extending radially and parallel to the central axis and / or parallel to the central axis and circumferentially.

[0091] At least one connecting segment may extend substantially parallel to or parallel to the central axis. However, at least one connecting segment may also be curved and / or extend obliquely, at an angle, or similarly relative to the central axis.

[0092] The magnetic coupling or connection of the convergent surface, or the magnetic coupling or connection of the convergent surface with one or more transmission surfaces, can be achieved in a particularly simple manner by means of the connecting section. At least one transmission surface of the flux conductor, flux conductor device, or torque sensor device according to the invention is preferably magnetically coupled, particularly via the connecting section, to the first convergent surface and / or the second convergent surface (if present) of the associated flux conductor. If two transmission surfaces are provided for each flux conductor, the two transmission surfaces can be coupled, particularly via a common connecting section or separately via individual connecting sections, to the same convergent surface of the associated flux conductor. Alternatively, the first transmission surface can also be coupled to the first convergent surface via a first connecting section, and the second transmission surface to the second convergent surface via a second connecting section. It is important only that, as the analysis proceeds correctly thereafter, the convergent surfaces of the respective flux conductors are respectively magnetically coupled to the associated transmission surfaces of the flux conductors, and at least one transmission surface of the first flux conductor and at least one transmission surface of the second flux conductor are particularly arranged such that they form an axial gap into which the associated magnetic sensor of the magnetic sensor device for generating the torque sensor signal can extend. This enables the realization of the most diverse design options for the flux conductor according to the invention in terms of construction space.

[0093] In the context of this invention, "magnetically coupled" refers to the ability of magnetic flux to be conducted from one surface to another without the need to overcome a gap. This means that surfaces magnetically coupled to each other are preferably also electrically coupled or connected to each other.

[0094] In one feasible design of the torque sensor device according to the invention, at least one magnetic flux conductor is designed as a single piece. This allows for a simple reduction in the number of components required for the torque sensor device according to the invention. This has a favorable impact on production costs and assembly itself, as fewer parts need to be assembled.

[0095] In alternative, yet equally feasible, designs of the torque sensor device according to the invention, particularly in extended designs, at least one flux conductor is designed in a multi-component manner, particularly a dual-component manner, i.e., composed of multiple, particularly two, components, wherein the components of the flux conductor preferably include a first convergent surface or a second convergent surface and, if necessary, one or more transmission surfaces, and other components include another convergent surface.

[0096] This allows the flux conductor, and therefore the torque sensor device, to be flexibly adapted to different applications, such as for different vehicles with different interfering magnetic fields surrounding the torque sensor device during operation. In particular, if the second convergence surface of at least one flux conductor is constituted by a separate component or is part of a separate component of the flux conductor, then, for example, the size and / or position and / or orientation of the second convergence surface of at least one flux conductor can be easily adapted by replacing that component. This allows for a simple improvement in compensation for the flux of interfering magnetic fields. This is correspondingly applicable to the first convergence surface and / or one or more transmission surfaces.

[0097] Conventional torque sensor devices or conventional flux conductors can also be modified in this way into torque sensor devices or flux conductors according to the present invention. Furthermore, the multi-component flux conductor in the corresponding design enables the provision of various variations of torque sensor devices with different designs of interference flux compensation and a wide range of general-purpose components in a simple manner. In particular, it enables the provision of torque sensor devices without interference flux compensation and one or more torque sensor devices with interference magnetic flux compensation, wherein only corresponding additional or another flux conductor component needs to be provided respectively.

[0098] The torque sensor device according to the invention, and especially the flux conductor device for the torque sensor device according to the invention, has at least a first flux conductor and a second flux conductor, wherein the first flux conductor and the second flux conductor each have a first convergence surface and at least one transmission surface, wherein the first convergence surface is designed to at least partially converge and / or at least partially transmit useful flux generated in the stator of the torque sensor device according to the applied torque and / or a first interference magnetic field generated according to the interference magnetic field surrounding the torque sensor device.

[0099] At least one transmission surface of the first magnetic flux conductor and at least one transmission surface of the second magnetic flux conductor are arranged opposite each other such that an axial gap is formed between the transmission surfaces, and at least one magnetic sensor of the magnetic sensor device can be arranged in the axial gap, wherein a first magnetic flux bundled in the first magnetic flux conductor can be transmitted to the magnetic sensor of the magnetic sensor device arranged in the axial gap through at least one transmission surface of the first magnetic flux conductor, and wherein a second magnetic flux bundled in the second magnetic flux conductor can be transmitted to the magnetic sensor through at least one transmission surface of the second magnetic flux conductor.

[0100] According to the invention, the second flux conductor further has a second convergence surface magnetically coupled to at least one transmission surface of the second flux conductor. The second convergence surface is designed to generate or at least partially converge and transmit a second interference flux based on an interfering magnetic field surrounding the torque sensor device. The first and second flux conductors are respectively designed and arranged relative to each other such that when the torque sensor device is surrounded by an interfering magnetic field, a first interfering flux fraction of the first flux and a second interfering flux fraction of the second flux at least partially cancel each other out, particularly at least partially canceling each other out in the gap formed by the transmission surface. The first interfering flux fraction is at least partially converged in the first convergence surface of the first flux conductor and transmitted to the magnetic sensor through at least one transmission surface of the first flux conductor. The second interfering flux fraction is at least partially converged in the second convergence surface of the second flux conductor and transmitted to the magnetic sensor through at least one transmission surface of the second flux conductor.

[0101] In a particularly advantageous design of the flux conductor device according to the invention, the first flux conductor also has a second convergence surface, wherein the second convergence surface of the first flux conductor is magnetically coupled to at least one transmission surface of the first flux conductor and is also designed to generate or at least partially converge and transmit a second interference flux according to the interfering magnetic field surrounding the torque sensor device, wherein the first flux conductor and the second flux conductor are respectively designed and arranged relative to each other such that when the torque sensor device is surrounded by the interfering magnetic field, the first interfering flux fraction of the second flux and the second interfering flux fraction of the first flux at least partially cancel each other out, the first interfering flux fraction is at least partially converged in the first convergence surface of the second flux conductor and transmitted to the magnetic sensor through at least one transmission surface of the second flux conductor, and the second interfering flux fraction is at least partially converged in the second convergence surface of the first flux conductor and transmitted to the magnetic sensor through at least one transmission surface of the first flux conductor.

[0102] The flux conductor of the flux conductor device for the torque sensor device according to the invention is particularly designed for use in the flux conductor device according to the invention and / or in the torque sensor device according to the invention and has a first convergence surface and at least one transmission surface, wherein the first convergence surface is designed to at least partially converge and / or at least partially transmit the useful magnetic flux generated in the stator device of the torque sensor device according to the applied torque and / or the first interference magnetic field generated according to the interference magnetic field surrounding the torque sensor device, wherein the flux converged in the flux conductor can be transmitted to the adjacent magnetic sensor of the magnetic sensor device through the at least one transmission surface of the flux conductor.

[0103] The flux conductor according to the invention is characterized in that it further has a second convergent surface magnetically coupled to at least one transmission surface of the flux conductor, the second convergent surface being designed, in the functional use of the flux conductor in the torque sensor device, to generate or at least partially converge and transmit a second interfering magnetic flux based on the interfering magnetic field surrounding the torque sensor device.

[0104] Furthermore, the flux conductor according to the invention is designed to be arranged in the torque sensor device according to the invention together with another flux conductor for the flux conductor device according to the invention and / or together with another flux conductor for the torque sensor device according to the invention, such that when the torque sensor device is surrounded by an interfering magnetic field, a first interfering flux fraction and a second interfering flux fraction at least partially cancel each other out. The first interfering flux fraction is at least partially clustered in a first convergence surface of the other flux conductor and transmitted through at least one transmission surface of the other flux conductor, in particular, to at least one magnetic sensor of the magnetic sensor device. The second interfering flux fraction is at least partially clustered in a second convergence surface of the flux conductor and transmitted through at least one transmission surface of the flux conductor, in particular, to the magnetic sensor.

[0105] Provided that this is technically possible or feasible, all the features described with reference to the torque sensor device and the described embodiments and their respective advantages are also applicable to the flux conductor device according to the invention and the flux conductor according to the invention, and vice versa, even if they are described only once in conjunction with only one of these inventive solutions.

[0106] Other features of the invention are derived from the claims, drawings, and descriptions thereof. Where technically feasible, all features and combinations thereof mentioned above in the specification, as well as those identifiable in the drawings and / or mentioned in the description thereof, may be implemented not only in the combinations given, but also in other combinations or individually. Attached Figure Description

[0107] The present invention will now be described in detail with reference to the accompanying drawings and several preferred embodiments, wherein functionally identical components have the same reference numerals. The drawings schematically illustrate the following:

[0108] Figure 1 The perspective view shows a torque sensor device of this type known in the prior art; however, the associated magnetic sensor device is not shown.

[0109] Figure 2 It shows according to Figure 1 The torque sensor device is affected by the interfering magnetic field surrounding it during operation.

[0110] Figure 3 A partial view of a first embodiment of a torque sensor device according to the invention is shown in the schematic diagram, which has a first embodiment of a magnetic flux conductor device according to the invention, having two magnetic flux conductors according to the invention. A related magnetic sensor device is also not shown.

[0111] Figure 4a A partial view of a second embodiment of a torque sensor device according to the invention is shown in the perspective view. This torque sensor device has another embodiment of a magnetic flux conductor device according to the invention, which has two exemplary, alternative magnetic flux conductors according to the invention. A related magnetic sensor device is also not shown.

[0112] Figure 4b The stereoscopic view shows the following: Figure 4a The second magnetic flux conductor of the magnetic flux conductor device according to the present invention.

[0113] Figure 5a A partial view of a third embodiment of a torque sensor device according to the invention is shown, which has another embodiment of a magnetic flux conductor device according to the invention, having two exemplary, alternative magnetic flux conductors according to the invention. In this case, two magnetic sensors of a related magnetic sensor device are shown.

[0114] Figure 5b The three-dimensional part drawing shows the proportions according to... Figure 5a The second magnetic flux conductor,

[0115] Figure 6a A partial view of another embodiment of a torque sensor device according to the invention is shown, which has another embodiment of a magnetic flux conductor device according to the invention, which has two magnetic flux conductors in another exemplary, feasible design according to the invention.

[0116] Figure 6b The three-dimensional part drawing shows the parts in a first-person perspective, according to... Figure 6a The first magnetic flux conductor,

[0117] Figure 6c The part drawing in three dimensions shows the parts from another perspective, according to... Figure 6a and Figure 6b The first magnetic flux conductor,

[0118] Figure 7a A perspective view shows another embodiment of the torque sensor device according to the invention, which has another embodiment of the magnetic flux conductor device according to the invention, having two magnetic flux conductors respectively designed according to the invention in other feasible designs. The corresponding magnetic sensor device is not shown.

[0119] Figure 7b The three-dimensional part drawing shows the proportions according to... Figure 7a The first magnetic flux conductor according to the present invention,

[0120] Figure 7c The three-dimensional part drawing shows the proportions according to... Figure 7a and Figure 7b The second component of the first magnetic flux conductor.

[0121] Figure 7d The three-dimensional part drawing shows the proportions according to... Figure 7a and Figure 7b The first component of the magnetic flux conductor according to the present invention,

[0122] Figure 8a A partial view of another embodiment of the torque sensor device according to the invention is shown in the perspective view. This torque sensor device has another embodiment of the magnetic flux conductor device according to the invention, which has two magnetic flux conductors respectively designed according to the invention in other designs, and three magnetic sensors of the associated magnetic sensor device fixed on a common printed circuit board.

[0123] Figure 8b Another stereoscopic view shows the results based on Figure 8a Torque sensor device,

[0124] Figure 8c The invention illustrates a first flux conductor having only the flux conductor device according to the invention. Figure 8a and Figure 8b Torque sensor device,

[0125] Figure 8d The 3D part drawing shows the data from the lower diagonal. Figures 8a to 8cThe printed circuit board has two magnetic sensors fixed on it.

[0126] Figure 9a Another embodiment of the flux conductor device according to the invention is shown in the perspective view. This device has two flux conductors according to the invention, with a printed circuit board between them. The printed circuit board has two magnetic sensors arranged on it for an associated magnetic sensor device of the torque sensor device according to the invention.

[0127] Figure 9b It is shown in another stereoscopic perspective according to Figure 9a Magnetic flux conductor device,

[0128] Figure 9c The perspective view shows the data from the lower diagonal. Figure 9a and Figure 9b The first magnetic flux conductor and a printed circuit board with two magnetic sensors fixed thereon,

[0129] Figure 10 Another embodiment of the torque sensor device according to the invention is shown, which has another embodiment of the magnetic flux conductor device according to the invention, which has a magnetic flux conductor designed according to the invention in another design embodiment. Again, the associated magnetic sensor device is not shown.

[0130] Figure 11 Another partial embodiment of the torque sensor device according to the invention is shown in the schematic diagram. This torque sensor device has another embodiment of the magnetic flux conductor device according to the invention. However, this magnetic flux conductor device now only has one magnetic flux conductor designed according to the invention in another design. The associated magnetic sensor device is also not shown. Detailed Implementation

[0131] Figure 1 The perspective view shows a torque sensor device 1 of this type, known in the prior art, but not the associated magnetic sensor device. The torque sensor device is used to detect the torque applied to the steering shaft of a motor vehicle. The torque sensor device 1 has a magnetic device 5, a stator device 2 with a first stator 2A and a second stator 2B, a magnetic flux conductor device 6 with a first magnetic flux conductor 6A and a second magnetic flux conductor 6B, and a magnetic sensor device not shown here. The first stator and the second stator have an annular disc-shaped stator body 3 and a stator connecting plate 4, respectively.

[0132] Magnetic device 5 has a function for generating at least one useful magnetic field MN (see Figure 2The magnetic element 5 is a ring-shaped permanent magnet, which is arranged concentrically with the central axis Z and the stator assembly 2 and can be torsionally fixed to a first part of the steering shaft (not shown here), while the stator assembly 2 can be torsionally connected to a second part of the steering shaft, so that the stator assembly 2 can rotate circumferentially U relative to the magnetic element 5 about the central axis Z, which in particular coincides with the rotation axis of the steering shaft. This generates magnetic flux in the stator assembly 2, especially in the first stator 2A and the second stator 2B, based on which the torque applied to the steering shaft can be determined.

[0133] Such torque sensor devices are substantially known from the prior art, such as patent documents DE 10 2013 006 379 A1 or EP1 269 133 B1, which are hereby explicitly referenced to describe in more detail the radio principle of operation of such torque sensor device 1.

[0134] In order to at least partially generate magnetic flux in the stator assembly 2 and to transmit the generated magnetic flux in the stator assembly 2 to a magnetic sensor device (not shown) for generating corresponding sensor signals for further analysis to determine torque, the flux conductor device 6 is provided with a first flux conductor 6A and a second flux conductor 6B, wherein each flux conductor 6A or 6B has a focusing surface 7 and, in this case, two transmission surfaces 8. The magnetic flux generated in the stator assembly 2 is focused by the focusing surface 7 and transmitted to the magnetic sensor device via the transmission surfaces 8, in this case, specifically to a first magnetic sensor that can be arranged parallel to the transmission surface 8 and a second magnetic sensor that can be arranged parallel to the other transmission surface 8 and in the same plane as the first magnetic sensor, wherein the transmission surfaces 18 respectively form axial gaps (not shown in detail here), and the magnetic sensors of the magnetic sensor device can be arranged in the axial gaps between the transmission surfaces 8.

[0135] Figure 2 It shows the relationship with the data. Figure 1 Similar to the torque sensor device 1 during operation, the torque sensor device 1 operates under the influence of an interfering magnetic field MS surrounding it, wherein, in this case, the magnetic device 5 and the stator device 2 generate the useful magnetic field MN required for determining the torque. Figure 1 The torque sensor device 1 is designed in the same way, while the flux conductor device 6 has a different geometry, particularly the convergence surface 7 and the transmission surface 8 of the first flux conductor 6A and the second flux conductor 6B. However, the operating principle of the flux conductor device 6 is the same as that of the first flux conductor 6A and the second flux conductor 6B. Figure 1 The torque sensor device 1 shown is no different.

[0136] If the stator assembly 2 rotates circumferentially relative to the magnetic element 5 around the central axis Z during operation, magnetic flux is generated in the two stators 2A and 2B of the stator assembly 2 according to the useful magnetic field MN generated by the magnetic element 5. The magnetic flux is focused in the focusing surface 7 of the two magnetic flux conductors and transmitted to the corresponding transmission surface 8.

[0137] If the torque sensor device 1 is surrounded by an interfering magnetic field MS, or, in an electric vehicle, by an interfering magnetic field generated by an electric motor, then according to the interfering magnetic field MS, interfering magnetic flux is generated in the stator device 2, or particularly in the first stator 2A and / or the second stator 2B. This interfering magnetic flux is bundled together in the two flux conductors 6A and 6B, particularly in their convergence surface 7, and is also transmitted to the transmission surface 8.

[0138] The relevant magnetic flux directions of the magnetic flux generated in stators 2A and 2B and in flux conductors 6A and 6B are oriented according to how the useful magnetic field MN and the interfering magnetic field MS are oriented. The respective magnetic fluxes F1 and F2 from the transmission surfaces 8 of the first and second flux conductors 6A or 6B (wherein, in...) Figure 2 Only F2 is shown here, where the magnetic flux is vectorarily added in the gap between the transmission surfaces to form a composite magnetic flux. This composite magnetic flux can be transmitted to the magnetic sensor arranged in the axial gap between the transmission surfaces 8. In this case, only the magnetic flux F2 bundled and transmitted by the second magnetic flux conductor 6B is shown in the upward magnetic flux direction. Figure 2 The middle part is symbolically represented by an arrow.

[0139] Depending on the orientation of the useful magnetic field MN and the interfering magnetic field MS, the interfering magnetic field MS increases or decreases the magnetic flux, which is transmitted to the relevant magnetic sensor device through each transmission surface 8 for analysis, thereby affecting or distorting the sensor signal and thus affecting or distorting the torque to be determined. In other words, the magnitude and direction of the magnetic flux synthesized by the interfering magnetic field MS cause a greater or lesser influence or distortion on the torque signal, because the torque signal is determined by the magnetic flux synthesized in the gap and not simply by the magnetic flux generated based on the useful magnetic field MN.

[0140] This is especially true in environments where one or more interfering magnetic fields MS are superimposed on the useful magnetic field MN of a magnetic device with magnetic element 5, such as when a torque sensor device is used in a hybrid vehicle and / or an electric vehicle with an electric motor, causing the torque signal determined by the torque sensor device 1 to be distorted.

[0141] Figure 3A partial view of a first embodiment of a torque sensor device according to the invention is shown in the schematic diagram, which has a first embodiment of a magnetic flux conductor device 16 according to the invention, having two magnetic flux conductors 16A and 16B according to the invention, particularly a first magnetic flux conductor 16A and a second magnetic flux conductor 16B. The associated magnetic sensor device is also not shown.

[0142] The torque sensor device 10 also has a stator device 12 with a first stator 12A and a second stator 12B and a magnetic device 15. The magnetic device has a permanent magnet ring magnet 15 as a magnetic element. The two stators 12A and 12B also have annular disk-shaped stator bodies 13 and corresponding connecting plates 14. The connecting plates are arranged in a comb-like manner along the circumferential direction relative to each other and are staggered and meshed with each other along the axial direction. The stator device 12 is able to rotate relative to the magnetic element 15 about the central axis Z along the circumferential direction U.

[0143] Here, in addition to the first gathering surface 17 and the respective associated transmission surface 18, the first magnetic flux conductor 16A and the second magnetic flux conductor 16B each have a second gathering surface 19. The first gathering surface 17 of the first magnetic flux conductor 16A is designed to gather a first magnetic flux having a useful magnetic flux share FN and a first interference magnetic flux share FS1, the useful magnetic flux share depending on the useful magnetic field MN or the applied torque, the first interference magnetic flux share depending on the interference magnetic field MS surrounding the torque sensor device 10, and transmit the first magnetic flux to the gap formed by the transmission surface 18 through the associated transmission surface 18.

[0144] In having such Figure 3 In the case of a directional external interfering magnetic field MS, a second magnetic interference flux FS2 is generated in the second flux conductor 16B through the second gathering surface 19 of the second flux conductor 16B, which is arranged according to the invention. This second interfering flux is transmitted to the transmission surface 18 of the second flux conductor 16B through the connecting section 19A extending parallel to the central axis Z in this case and through a portion of the first gathering surface 17 of the second flux conductor 16B, and from there it is transmitted into the gap as a portion of the interfering flux FS2 of the second flux F2 bundled by the second flux conductor 16B.

[0145] According to the present invention, the first magnetic flux conductor 16A and the second magnetic flux conductor 16B are designed and arranged relative to each other such that a first interfering magnetic flux fraction FS1 of the first magnetic flux F1 and a second interfering magnetic flux fraction FS2 of the second magnetic flux F2 at least partially cancel each other out. The first interfering magnetic flux fraction is at least partially concentrated in the first gathering surface 17 of the first magnetic flux conductor 16A and transmitted into the gap through at least one transmission surface 18 of the first magnetic flux conductor 16A, and the second interfering magnetic flux fraction is at least partially concentrated in the second gathering surface 19 of the second magnetic flux conductor 16B and transmitted into the gap through the transmission surface 18 of the second magnetic flux conductor 16B. This reduces or even completely eliminates the interfering magnetic flux fraction FS1 of the first magnetic flux F1, thereby reducing or avoiding undesirable influence of the interfering magnetic field on the sensor signal generated by the torque sensor device 10.

[0146] The remaining portion of the first magnetic flux F1, especially the remaining useful magnetic flux FN, can be transmitted back to the stator device from the first magnetic flux conductor 16A through the transmission surface 18 of the second magnetic flux conductor 16B and the first convergence surface 17 of the second magnetic flux conductor 16B (referred to here as F3).

[0147] Since the first flux conductor 16A also has a second convergence surface 19, the coupling of the second interfering flux component FS2 can be avoided through the first convergence surface 17 of the first flux conductor 16A. This second interfering flux component is transmitted to the gap through the transmission surface 18 of the second flux conductor and from there to the first flux conductor 16A through the transmission surface 18, because the remaining second interfering flux component FS2 can be guided back to the surrounding environment (represented here by F3) through the second convergence surface 19 of the connecting section 19A and the first flux conductor 16A.

[0148] In order to transmit the second interference flux component FS2 into the gap, such that the first interference flux component FS1 cancels out the second interference flux component FS2 in the gap, the first and second convergence surfaces 17 or 19 of the first flux conductor 16A and the second flux conductor 16B and the transmission surface 18 are respectively arranged and oriented relative to each other and magnetically coupled to each other through the associated connection sections 18A or 19A, such that the first interference flux component FS1 and the second interference flux component FS2 are transmitted into the gap in opposite directions.

[0149] This is achieved in particular in that the second convergence surface 19 is arranged parallel to the first convergence surface 17 of the respective magnetic flux conductors 16A or 16B, but arranged in a plane parallel to the first convergence surface, i.e., offset from the first convergence surface 17 along the axial direction, and particularly on the other side of the transmission surface 18 of the respective magnetic flux conductors 16A or 16B. The first and second convergence surfaces 17 or 19 of the two magnetic flux conductors 16A and 16B, as well as the transmission surfaces 18 of the two magnetic flux conductors, all extend substantially plate-like or disc-like in a plane extending perpendicular to the central axis Z.

[0150] This generates a second interference flux fraction F2 in the second flux conductor 16B, depending on the interference magnetic field MS, which has the opposite direction to the first interference flux fraction FS1 generated by the interference magnetic field MS in the gap. This allows the first interference flux FS1, which is concentrated in the first aggregation surface 17 by the interference magnetic field MS, to be reduced in both flux conductors 16A and 16B, especially before being transmitted to the associated magnetic sensor device, and without the need for additional magnetic elements or similar devices. Furthermore, if the flux conductors are designed accordingly to be adapted to the interference magnetic field MS, the first interference flux FS1 concentrated in the first aggregation surface 17 by the interference magnetic field MS can be at least partially, in some cases (depending on the strength and orientation of the external interference magnetic field MS and the dimensions of the aggregation surfaces 17 and 19, especially the size ratio of the second aggregation surface 19 to the first aggregation surface 17), or even completely compensated.

[0151] In order to avoid generating magnetic flux in the second focusing surface 19 according to the useful magnetic field MN and thereby avoid the proportion of magnetic flux generated and focused according to the useful magnetic field MN in the first focusing surface 17 being compensated, in this embodiment, the second focusing surface 19 is located radially outside the stator device 12, while the first focusing surface 17, whose task is particularly to focus the magnetic flux generated in the stator device 12 according to the useful magnetic field MN, is located radially inside the stator device 12 and, in particular, completely overlaps with the stator device radially.

[0152] In this example, the first magnetic flux conductor 16A and the second magnetic flux conductor 16B are both arranged axially within the stator assembly, meaning that neither the first magnetic flux conductor 16A nor the second magnetic flux conductor 16B protrudes upward or downward from the stator assembly along the axial direction. This allows for a particularly compact structure along the axial direction.

[0153] However, this is feasible in principle, wherein, in this case, at least one second convergent surface 19 is preferably arranged axially above or below the stator assembly. If the second convergent surface 19 is arranged axially at a sufficient distance from the stator assembly 12, especially at a minimum distance defined by the interval, then the second convergent surface 19 can also be arranged radially within the stator assembly 12 and at least completely or partially overlap the stator assembly radially. This enables the provision of a torque sensor device that is particularly compact radially, although less compact axially.

[0154] The first convergence surface 17 and the second convergence surface 19 of the two flux conductors 16A and 16B are in Figure 3 In the embodiments shown, the designs are particularly annular disk segments.

[0155] For advantageous magnetic properties, the two flux conductors 16A and 16B in this embodiment, as is generally known in the art, are made of soft magnetic materials and are particularly designed as stamped and bent parts.

[0156] In this case, the size of the second gathering surface 19 is specifically chosen such that the size of the gathering surface is approximately 1.5 times the area of ​​the first gathering surface 17 of the associated magnetic flux conductor 16A or 16B. However, the size of the second gathering surface 19 of the first and / or second magnetic flux conductors 16A, 16B may also be selected based on the size of the first gathering surface of the associated magnetic flux conductors 16A, 16B, rather than on the size of the first gathering surface of the other magnetic flux conductor 16B. This allows for particularly good, especially almost complete or complete, compensation for the first interfering magnetic flux fraction FS1 generated by the interfering magnetic field MS when the size is appropriately selected.

[0157] Figure 4a A partial view of a second embodiment of a torque sensor device according to the invention is shown in the perspective view. This torque sensor device has another embodiment of a magnetic flux conductor device 16 according to the invention, which has two exemplary, alternative magnetic flux conductors 16A and 16B according to the invention. The associated magnetic sensor device is also not shown. In this embodiment, the first and second aggregation surfaces 17 or 19 are respectively magnetically connected to the transmission surface 18 via connecting sections 18A or 19A extending circumferentially and axially, and are magnetically interconnected via the connecting sections 18A and 19A and the transmission surface 18. In this case, the size of the second aggregation surface 19 approximately corresponds to the area of ​​the first aggregation surface 17.

[0158] Figure 4b The stereoscopic view shows the following: Figure 4aThe second magnetic flux conductor 16B of the magnetic flux conductor device according to the present invention, according to Figure 4b The annular disc-shaped design of the first gathering surface 17 and the second gathering surface 19 can be clearly seen. It can also be seen that the transfer surface 18 is arranged in the plane between the first gathering surface 17 and the second gathering surface 19, or that the two gathering surfaces 17 and 19 are arranged along the axial direction on different sides of the transfer surface 18, and that the first gathering surface 17 and the second gathering surface 19 extend in planes that are parallel and perpendicular to the central axis Z.

[0159] Figure 5a A partial view of a third embodiment of a torque sensor device 30 according to the invention is shown, which has another embodiment of a magnetic flux conductor device 16 according to the invention, having two exemplary, alternative magnetic flux conductors 16A and 16B according to the invention, in this case having two magnetic sensors 21 of a related magnetic sensor device. In this embodiment, the two magnetic flux conductors 16A and 16B are arranged to interlock, particularly along the circumferential direction U, or nested within each other. Figure 4a and Figure 4b Unlike the previous example, in this example, neither the first flux conductor 16A nor the second flux conductor 15B has a closed, one-piece transmission surface 18. Instead, each has two separate, independent transmission surfaces 18. The transmission surface of the first flux conductor 16A is coupled to the second convergence surface via corresponding connecting sections 18A. In the second flux conductor 16B, one of the two transmission surfaces 18, in this case... Figure 5a The left-hand transfer surface 18 of the view is connected to the second aggregation surface 19 via the associated connection segment 18A, and the right-hand transfer surface 18 is connected to the first aggregation surface 17 via the associated connection segment 18A.

[0160] The two transmission surfaces 18 of the first magnetic flux conductor 16A are respectively arranged opposite to the transmission surface 18 of the second magnetic flux conductor 16B and form an axial gap (not shown in detail here) with the transmission surface 18 of the second magnetic flux conductor 16B. This axial gap is designed for arranging the magnetic sensor 21, which is only schematically shown here.

[0161] The focusing surfaces 17 and 19 and the transmission surface 18 are also magnetically coupled or connected to each other through corresponding connecting sections 18A and 19A, which are also designed to be magnetically conductive, thereby enabling the magnetic flux to be transmitted to the corresponding magnetic sensor 21 through the transmission surface 18 to determine the torque applied to the torque sensor device 30.

[0162] Figure 5b The three-dimensional part drawing shows the proportions according to... Figure 5aThe second magnetic flux conductor 16B, in which the parallel arrangement of the various connecting sections 18A and 19A and the first and second gathering surfaces 17 or 19 and the transmission surface 18 can be clearly seen in this view.

[0163] The transmission surface 18 is designed and arranged such that the associated magnetic sensors 21 can be arranged in a common plane and, in particular, on a common printed circuit board, not shown here, thereby producing a particularly advantageous structure of the torque sensor device 30 according to the invention.

[0164] Figure 6a A partial view of another embodiment of the torque sensor device 40 according to the invention is shown, which has another embodiment of the magnetic flux conductor device 16 according to the invention, which has two magnetic flux conductors 16A and 16B in other exemplary, feasible designs according to the invention, wherein, in this embodiment of the torque sensor device 40 according to the invention, the two magnetic flux conductors 16A and 16B are also designed as a single piece, however, unlike those according to... Figure 5a and Figure 5b The described embodiment differs in that it is a general-purpose component with two magnetic flux conductors arranged only by rotation of 180°. This results in a torque sensor device 40 that can be manufactured particularly simply and supplied at low cost.

[0165] Figure 6b The parts are shown in a three-dimensional drawing from a first-person perspective, according to... Figure 6a The first magnetic flux conductor and Figure 6c The part drawing, viewed from another perspective, shows the components according to... Figure 6a and Figure 6b The first magnetic flux conductor, wherein, according to this view, the various functional surfaces 17, 19 and 18, as well as the connecting sections 18A, 19A, their design and arrangement relative to each other, can be clearly seen.

[0166] Figure 7a Another embodiment of the torque sensor device 50 according to the invention is shown, which has another embodiment of the magnetic flux conductor device 26 according to the invention, which has two magnetic flux conductors 26A and 26B respectively designed according to the invention in other feasible designs, wherein this embodiment of the torque sensor device 50 according to the invention has the magnetic flux conductor device 26 according to the invention, which has a first magnetic flux conductor 26A designed in a dual-component manner and a second magnetic flux conductor 26B designed in a dual-component manner.

[0167] The two magnetic flux conductors 26A and 26B are respectively composed of a first magnetic flux conductor component 27 and a second magnetic flux conductor component 28, which are respectively manufactured as stamped and bent parts made of soft magnetic material. Figures 7b to 7d The details of the flux conductor 26A can be clearly seen, among which, Figure 7b The part drawing shows... Figure 7a The magnetic flux conductor 26A is composed of the combination of these elements. Figure 7c The second component 28 is shown in the three-dimensional part drawing. Figure 7d The first component 27 is shown.

[0168] The second flux conductor component 28 includes a first gathering surface 17 and a transmission surface 18, and the first flux conductor component 27 includes a second gathering surface 19. To enable magnetic coupling between the second gathering surface 19 and the first gathering surface 17 in a combined state, the first component 27 has a connecting section 19A and a coupling surface (not shown in detail here), which can be arranged adjacent to, in particular overlapping with, or completely aligned with, the first gathering surface 17 and is primarily in planar contact with the first gathering surface, thereby being magnetically and electrically conductive.

[0169] This multi-component flux conductor achieves a modular construction of the flux conductor according to the invention, thereby enabling particularly flexible adaptation to operating conditions, especially to the design of the second convergence surface as needed. For example, the size of the second convergence surface can be adapted as required. This allows for particularly good reduction or compensation of interfering magnetic flux for different applications, and thus provides a torque sensor device that is particularly robust against interfering magnetic fields.

[0170] Figure 8a A partial view of another embodiment of the torque sensor device 60 according to the invention is shown in the perspective view. This torque sensor device has another embodiment of the magnetic flux conductor device 36 according to the invention, which has two magnetic flux conductors 36A and 36B, which are designed according to the invention in other designs, and two magnetic sensors 21 with associated magnetic sensor devices fixed on a common printed circuit board 22. In this case, the magnetic flux conductors 36A and 36B are also designed as a single piece, but have a different design from the aforementioned magnetic flux conductors.

[0171] The two magnetic sensors 21 are designed as 2D Hall sensors and are arranged on a common printed circuit board 22 in a common plane and respectively in the axial gap between the first magnetic flux conductor 36A and the second magnetic flux conductor 36B.

[0172] To achieve a particularly compact structure along the axial direction, and especially a particularly low axial construction height for the torque sensor device 60, the printed circuit board 22 has a reduced thickness in the region 24 surrounding the two magnetic sensors 21. This thickness is formed, in particular, by the recess 23 on the bottom side of the printed circuit board 22, which is especially effective from... Figures 8b to 8d It is very clear in the middle.

[0173] Figure 8b This is shown in another stereoscopic view according to Figure 8a Torque sensor device 60, Figure 8c A torque sensor device 60 with only a first magnetic flux conductor 36A is shown. Figure 8d The printed circuit board 22, which has two magnetic sensors 21 fixed thereon, is shown from the lower diagonal in the three-dimensional part drawing.

[0174] Figure 9a Another embodiment of the flux conductor device 46 according to the invention is shown in the perspective view. The flux conductor device has two flux conductors 46A and 46B according to the invention, and a printed circuit board 22 is provided therebetween between the flux conductors. The printed circuit board has two magnetic sensors 21 arranged on the printed circuit board for a related magnetic sensor device of the torque sensor device according to the invention. Figure 9b Another perspective view shows the flux conductor device 46. In this embodiment, the printed circuit board 22 is configured for a compact structure along the axial direction, as described above. Figures 8a to 8d Unlike the described embodiment, it does not have a large recess 23 on the bottom side of the printed circuit board, but instead has two separate recesses 23, grooves 23, or recesses 23, into which the second magnetic flux conductor 46B, in this case the lower magnetic flux conductor's transmission surface 18, extends from below. Figure 9c The recess 23 in the printed circuit board 22 can be clearly seen. Figure 9c The perspective view shows the data from the lower diagonal. Figure 9a and Figure 9b The first magnetic flux conductor 46A and the printed circuit board 22 having two magnetic sensors 21 fixed thereon.

[0175] Figure 10Another embodiment of the torque sensor device 70 according to the invention is shown, which has another embodiment of the magnetic flux conductor device 56 according to the invention, which has two magnetic flux conductors 56A and 56B respectively designed according to the invention in another design scheme. Again, the associated magnetic sensor device is not shown. In this embodiment, unlike the aforementioned embodiment of the magnetic flux conductor device 56 according to the invention, the first magnetic flux conductor 56A and the second magnetic flux conductor 56B do not have annular disk-shaped second convergence surface 19, but instead have rectangular or, in particular, square convergence surfaces 19, which is also feasible in principle. However, the dimensions of the second convergence surface 19 in this embodiment are also specifically chosen to adequately compensate for the magnetic flux generated by the interfering magnetic field MS within the magnetic flux conductor device 56, or particularly in each magnetic flux conductor 56A and 56B.

[0176] Figure 11 Another partial embodiment of the torque sensor device 80 according to the invention is shown in the schematic diagram. This torque sensor device has another embodiment of the magnetic flux conductor device 66 according to the invention; however, this magnetic flux conductor device now only has a second magnetic flux conductor 66B with a second convergence surface 19 designed according to the invention, and the associated magnetic sensor device is also not shown. The first magnetic flux conductor 66A only has a first convergence surface 17 and does not have a second convergence surface.

[0177] pass Figure 11 The design of the second flux conductor 66B shown has a plane located in a plane perpendicular to the central axis Z, which extends axially between the convergence surfaces 17 and 19 of the second flux conductor 66B, and passes through... Figure 11 The design shown, in which the two flux conductors 66A and 66B are arranged relative to each other, with the transmission surface 18 of the first flux conductor 66A positioned below the transmission surface of the second flux conductor 66B, enables the flux conductor device 66 to achieve, at least partially cancel each other out, when the torque sensor device 80 is surrounded by a correspondingly oriented interfering magnetic field MS, the first interfering flux fraction FS1 of the first flux F1 and the second interfering flux fraction FS2 of the second flux F2. The first interfering flux fraction is at least partially clustered in the first gathering surface 17 of the first flux conductor 66A and transmitted through at least one transmission surface 18 of the first flux conductor 66A, and the second interfering flux fraction is at least partially clustered in the second gathering surface 19 of the second flux conductor 66B and transmitted through at least one transmission surface 18 of the second flux conductor 66B.

[0178] Of course, various modifications, especially structural modifications, can be made without departing from the scope of protection of the claims.

[0179] List of reference numerals

[0180] 1. Torque sensor device known from the prior art

[0181] 2. Stator assembly

[0182] 2A First Stator

[0183] 2B Second Stator

[0184] 3. Annular disk-shaped stator body

[0185] 4. Stator connecting plate

[0186] 5 Magnetic components

[0187] 6. Magnetic flux conductor devices known from the prior art

[0188] 6A First flux conductor known from the prior art

[0189] 6B A second flux conductor known from the prior art

[0190] 7. Aggregation Surface

[0191] 8. Transfer Surface

[0192] 10, 20, 30, 40, 50, 60, 70, 80 Torque sensor device according to the present invention

[0193] 12 Stator assembly

[0194] 12A First Stator

[0195] 12B Second Stator

[0196] 13. Annular disk-shaped stator body

[0197] 14 Stator Connecting Plate

[0198] 15 Magnetic components

[0199] 16, 26, 36, 46, 56, 66 Magnetic flux conductor device according to the present invention

[0200] 16A, 26A, 36A, 46A, 56A, 66A First flux conductor according to the present invention

[0201] 16B, 26B, 36B, 46B, 56B, 66B, Second flux conductor according to the present invention

[0202] 17 First aggregation surface

[0203] 18 Transfer Surface

[0204] 19 Second aggregation surface

[0205] 18A Connecting Section

[0206] 19A Connecting Section

[0207] 21 Magnetic Sensor

[0208] 22 Printed Circuit Board

[0209] 23 Recesses and grooves

[0210] 24. Regions with reduced thickness

[0211] 27 The first component of a magnetic flux conductor

[0212] 28. The second component of the magnetic flux conductor

[0213] F1 First magnetic flux

[0214] F2 Second magnetic flux

[0215] F2 The portion of the first magnetic flux transmitted back to the stator assembly

[0216] The share of the second magnetic flux transmitted back to the surrounding environment by F4

[0217] FN Useful magnetic flux

[0218] FS1 First Interference Flux

[0219] FS2 Second Interference Flux

[0220] MN Useful magnetic field

[0221] MS Interference Magnetic Field

[0222] U Zhou Xiang

[0223] Z-axis center

Claims

1. A torque sensor device (10, 20, ..., 80) for detecting torque applied to a shaft, in, The torque sensor device (10, 20, ..., 80) has a magnetic device (15), a stator device (12), and a magnetic flux conductor device (16, 26, 36, 46, 56, 66). The magnetic device (15) is designed to generate at least one useful magnetic field (MN), and the magnetic device (15) and the stator device (12) are movable relative to each other along the circumferential direction (U) about the central axis (Z) of the torque sensor device (10, 20, ..., 80) by applying torque, such that the relative movement along the circumferential direction (U) between the magnetic device (15) and the stator device (12) generates a useful magnetic flux (FN) in the stator device (12) based on the torque applied to the torque sensor device (10, 20, ..., 80). In the stator device (12), a first interference magnetic flux (FS1) can also be generated based on the interference magnetic field (MS) surrounding the torque sensor device (10, 20, ..., 80). The magnetic flux conductor device (16, 26, 36, 46, 56, 66) has a first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and a second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B), and the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) each have a first convergence surface (17) and each have at least one transmission surface (18). The first focusing surface (17) is designed to at least partially focus and / or at least partially transmit a useful magnetic flux (FN) and / or a first interfering magnetic field (FS1), wherein the useful magnetic flux is generated in the stator device (12) according to the applied torque, and the first interfering magnetic field is generated according to the interfering magnetic field (MS) surrounding the torque sensor device. In this arrangement, at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) are arranged opposite each other such that an axial gap is formed between the transmission surfaces, and at least one magnetic sensor (21) of the magnetic sensor device can be arranged in the axial gap. Wherein, at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) can transmit the first magnetic flux (F1) focused in the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) to the magnetic sensor (21) of the magnetic sensor device arranged in the axial gap, and Wherein, at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) can transmit the second magnetic flux (F2) focused in the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) to the magnetic sensor (21). The second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) is characterized in that it further has a second focusing surface (19) magnetically coupled to at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B), the second focusing surface being designed to generate or at least partially focus and / or transmit a second interference magnetic flux (FS2) according to the interference magnetic field (MS) surrounding the torque sensor device (10, 20, ..., 80). The first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) are designed and arranged relative to each other such that when the torque sensor device (10, 20, ..., 80) is surrounded by an interfering magnetic field (MS), the first interfering magnetic flux fraction (FS1) of the first magnetic flux (F1) and the second interfering magnetic flux fraction (FS2) of the second magnetic flux (F2) at least partially cancel each other out. The second interference flux component is at least partially focused in the first focusing surface (17) of the second magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and transmitted to the magnetic sensor through at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A), and at least partially focused in the second focusing surface (19) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) and transmitted to the magnetic sensor (21) through at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B).

2. The torque sensor device (10, 20, ..., 80) according to claim 1, characterized in that, The first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) also has a second convergence surface (19), wherein the second convergence surface (19) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) is magnetically coupled to at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and is also designed to generate or at least partially converge and transmit a second interference magnetic flux (FS2) based on the interference magnetic field (MS) surrounding the torque sensor device (10, 20, ..., 80). The first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) are designed and arranged relative to each other such that when the torque sensor device (10, 20, ..., 80) is surrounded by an interfering magnetic field (MS), the first interfering magnetic flux fraction (FS1) of the second magnetic flux (F2) and the second interfering magnetic flux fraction (FS2) of the first magnetic flux (F1) at least partially cancel each other out, with the first interfering magnetic flux fraction in the second magnetic flux conductor (16B, 26B, 36B) at least partially canceling each other out. The second interference flux component is at least partially converged in the first convergence surface (17) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and transmitted to the magnetic sensor through at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B), and at least partially converged in the second convergence surface (19) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and transmitted to the magnetic sensor (21) through at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A).

3. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, A first convergence surface (17) and / or a second convergence surface (19) and / or at least one transmission surface (18) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) extends at least partially in a plane perpendicular to the central axis (Z) of the torque sensor device (10, 20, ..., 80).

4. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The second convergence surface (19) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) extends at least partially parallel to the first convergence surface (17) of the associated flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B).

5. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, At least one transmission surface (18) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) extends at least partially in a plane extending between a first convergence surface (17) and a second convergence surface (19) of the associated flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) in a direction along the central axis (Z).

6. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, A first convergence surface (17) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) is arranged radially at least partially within the stator assembly (12).

7. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The second convergence surface (19) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) extends further outward radially than the first convergence surface (17) of the associated flux conductor and / or is arranged further outward radially than the first convergence surface (17) of the associated flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B).

8. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, A second convergence surface (19) of at least one magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) is arranged axially at a height located within the stator assembly (12) along the central axis.

9. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, A second convergence surface (19) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) is arranged axially above or below the stator assembly (12) along the central axis (Z).

10. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The size of the second convergence surface (19) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) is selected such that the size of the second interference flux (FS2) generated by the defined interference magnetic field (MS) having a defined field direction surrounding the torque sensing device (10, 20, ..., 80) and focused by the second convergence surface (19) is such that it compensates for a defined share of the first interference flux (FS1).

11. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The second convergence surface (19) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) is at least as large as or at least 1.3 times, 1.5 times, 2 times, 2.5 times, or 3 times, and up to 4 times, the first convergence surface (17) of the associated flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B).

12. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The torque sensor devices (10, 20, ..., 80) are used to detect the torque applied to the steering shaft of the motor vehicle.

13. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The first convergence surface (17) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) overlaps at least partially radially with the stator assembly.

14. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The second convergence surface (19) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) is arranged at least partially laterally next to the stator assembly (12).

15. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The size of the second convergence surface (19) of at least one flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) is selected such that the size of the second interference flux (FS2) generated by a defined interference magnetic field (MS) having a defined field direction surrounding the torque sensing device (10, 20, ..., 80) and converged by the second convergence surface (19) is at least 25%, 50%, or 75% of the first interference flux (FS1) generated by the interference magnetic field (MS).

16. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The first convergence surface (17) and the second convergence surface (19) of at least one magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) are respectively connected to each other through connecting sections (18A, 19A).

17. The torque sensor device (10, 20, ..., 80) according to claim 1 or 2, characterized in that, The first convergence surface (17) and the second convergence surface (19) of at least one magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) are interconnected by connecting sections (18A, 19A) that extend at least partially parallel to the central axis (Z).

18. A flux conductor device (16, 26, 36, 46, 56, 66) for a torque sensor device (10, 20, ..., 80) according to any one of claims 1 to 15, wherein, The magnetic flux conductor device (16, 26, 36, 46, 56, 66) has at least a first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and a second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B), and the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) each have a first convergence surface (17) and each have at least one transmission surface (18). The first focusing surface (17) is designed to at least partially focus and / or at least partially transmit a useful magnetic flux (FN) and / or a first interfering magnetic field (FS1), wherein the useful magnetic flux is generated in the stator device (12) of the torque sensor device according to the applied torque, and the first interfering magnetic field is generated according to the interfering magnetic field (MS) surrounding the torque sensor device. In this arrangement, at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) are arranged opposite each other such that an axial gap is formed between the transmission surfaces, and at least one magnetic sensor (21) of the magnetic sensor device can be arranged in the axial gap. Wherein, at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) can transmit the first magnetic flux (F1) focused in the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) to the magnetic sensor (21) of the magnetic sensor device arranged in the axial gap, and Wherein, at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) can transmit the second magnetic flux (F2) focused in the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) to the magnetic sensor (21). The second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) is characterized in that it further has a second focusing surface (19) magnetically coupled to at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B), the second focusing surface being designed to generate or at least partially focus and transmit a second interference magnetic flux (FS2) according to the interference magnetic field (MS) surrounding the torque sensor device (10, 20, ..., 80). The first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) are designed and arranged relative to each other such that when the torque sensor device (10, 20, ..., 80) is surrounded by an interfering magnetic field (MS), the first interfering magnetic flux fraction (FS1) of the first magnetic flux (F1) and the second interfering magnetic flux fraction (FS2) of the second magnetic flux (F2) at least partially cancel each other out. The second interference flux component is at least partially converged in the first convergence surface (17) of the second magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and transmitted to the magnetic sensor (21) through at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A), and at least partially converged in the second convergence surface (19) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) and transmitted to the magnetic sensor (21) through at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B).

19. The magnetic flux conductor device (16, 26, 36, 46, 56, 66) according to claim 18, characterized in that, The first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) also has a second convergence surface (19), wherein the second convergence surface (19) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) is magnetically coupled to at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and is also designed to generate or at least partially converge and transmit a second interference magnetic flux (FS2) based on the interference magnetic field (MS) surrounding the torque sensor device (10, 20, ..., 80). Wherein, the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) are respectively designed and arranged relative to each other such that when the torque sensor device (10, 20, ..., 80) is surrounded by an interfering magnetic field (MS), the first interfering magnetic flux fraction (FS1) of the second magnetic flux (FS1) and the second interfering magnetic flux fraction (FS2) of the first magnetic flux (FS2) at least partially cancel each other out, the first interfering magnetic flux fraction being present in the second magnetic flux conductor (16B, 26B, 36B, ..., 66A)... The second interference flux component is at least partially converged in the first convergence surface (17) of the first magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B) and transmitted to the magnetic sensor (21) through at least one transmission surface (18) of the second magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B), and at least partially converged in the second convergence surface (19) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A) and transmitted to the magnetic sensor (21) through at least one transmission surface (18) of the first magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A).

20. A flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) for a flux conductor device, said flux conductor device being used in a torque sensor device (10, 20, ..., 80), in, The magnetic flux conductors (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) are designed for use in the magnetic flux conductor device (16, 26, 36, 46, 56, 66) according to claim 18 or 19 and / or in the torque sensor device (10, 20, ..., 80) according to any one of claims 1 to 17, and have a first convergence surface (17) and at least one transmission surface (18). The first focusing surface (17) is designed to at least partially focus and / or at least partially transmit a useful magnetic flux (FN) and / or a first interfering magnetic field (FS1), the useful magnetic flux being generated in the stator assembly (12) of the torque sensor device (10, 20, ..., 80) according to the applied torque, and the first interfering magnetic field being generated according to an interfering magnetic field (MS) surrounding the torque sensor device (10, 20, ..., 80). Among them, at least one transmission surface (18) of the magnetic flux conductors (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) can transmit the magnetic flux (F1, F2) concentrated in the magnetic flux conductors (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) to the magnetic sensors (21) arranged adjacent to the magnetic sensor device. The magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) is characterized in that it further has a second focusing surface (19) magnetically coupled to at least one transmission surface (18) of the magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B), the second focusing surface being designed, in the functional use of the magnetic flux conductor (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) in the torque sensor device, to generate or at least partially focus and transmit a second interfering magnetic flux (FS2) based on the interfering magnetic field (MS) surrounding the torque sensor device. Wherein, the magnetic flux conductors (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) are designed to work with another magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B; 16A, 26A, 36A, 46A, 56A, 66A) for the magnetic flux conductor device (16, 26, 36, 46, 56, 66) according to claim 13 or 13, and / or with the magnetic flux conductor device according to claim 13 or 13, and / or with the magnetic flux conductor device according to claim 13 or 13, and / or with the magnetic flux conductor device according to claim 13 or 14 ... Another magnetic flux conductor (16B, 26B, 36B, 46B, 56B, 66B; 16A, 26A, 36A, 46A, 56A, 66A) of the torque sensor device (10, 20, ..., 80) according to any one of claims 1 to 12 is arranged together in the torque sensor device (10, 20, ..., 80) according to any one of claims 1 to 12, such that when the torque sensor device (10, 20, ..., 80) is surrounded by an interfering magnetic field (MS), the first interfering magnetic flux component... The first interference flux fraction (FS1) and the second interference flux fraction (FS2) at least partially cancel each other out, the first interference flux fraction being at least partially converged in the first convergence surface (17) of the other flux conductor (16B, 26B, 36B, 46B, 56B, 66B; 16A, 26A, 36A, 46A, 56A, 66A) and passing through the other flux conductor (16B, 26B, 36B, 46B, 56B, 66B; 16A, 26A, 36A, 46A, 56A, 66A). The second interference flux component is at least partially clustered in the second convergence surface (19) of the flux conductors (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B) and transmitted through at least one transmission surface (18) of the flux conductors (16A, 26A, 36A, 46A, 56A, 66A; 16B, 26B, 36B, 46B, 56B, 66B).

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