Torque sensor device, flux guide assembly, and flux guide

A torque sensor device for detecting a torque applied to a steering shaft of a motor vehicle, comprising:

• a magnetic arrangement;
• a stator arrangement;
• and
• a flux guide arrangement,
• wherein the magnetic arrangement is configured to generate at least one magnetic working field, and the magnetic arrangement and the stator arrangement are movable relative to one another in a circumferential direction about a central axis of the torque sensor device as a result of a torque being applied, in such a way that the relative movement between the magnetic arrangement and the stator arrangement in a circumferential direction enables a magnetic working flux to be generated in the stator arrangement in a manner dependent on the torque applied to the torque sensor device,
• wherein a first magnetic interference flux (FS1) generated in the stator arrangement in a manner dependent on a magnetic interference field surrounding the torque sensor device,
• wherein the flux guide arrangement has a first flux guide, and a second flux guide, and the first flux guide and the second flux guide each have a first collection surface and each have at least one transmission surface,
• wherein the first collection surfaces are each configured to at least partially concentrate and/or to at least partially conduct a magnetic working flux, which is generated in the stator arrangement in a manner dependent on an applied torque, and/or a first magnetic interference flux (FS1), which is generated in a manner dependent on a magnetic interference field (FS) surrounding the torque sensor device,
• wherein the at least one transmission surface of the first flux guide and the at least one transmission surface of the second flux guide are arranged opposite one another so as to between them form axial gap in which at least one magnetic sensor of a magnetic sensor arrangement can be arranged,
• wherein a first magnetic flux (F1) that is concentrated in the first flux guide is transmitted via the at least one transmission surface of the first flux guide to a magnetic sensor, arranged in the axial gap, of a magnetic sensor arrangement, and
• wherein a second magnetic flux (F2) that is concentrated in the second flux guide is transmitted via the at least one transmission surface of the second flux guide to the magnetic sensor,
• wherein the second flux guide furthermore has a second collection surface which is magnetically conductively coupled to the at least one transmission surface of the second flux guide and which is configured to generate and/or to at least partially concentrate and/or conduct a second magnetic interference flux (FS2) in a manner dependent on a magnetic interference field (MS) surrounding the torque sensor device,
• wherein the first flux guide and the second flux guide are each configured and arranged relative to one another such that, if the torque sensor device is surrounded by a magnetic interference field (MS), a first interference flux component (FS1) of the first magnetic flux (F1), which component is at least partially concentrated in the first collection surface of the first flux guide and transmitted via the at least one transmission surface of the first flux guide to the magnetic sensor, and a second interference flux component (FS2) of the second magnetic flux (F2), which component is at least partially concentrated in the second collection surface of the second flux guide and transmitted via the at least one transmission surface of the second flux guide to the magnetic sensor, at least partially cancel one another out,
• wherein the flux guide arrangement is arranged within the stator arrangement in an axial direction,
• wherein the second collection surface of at least one flux guide extends further outward in a radial direction than the first collection surface of the associated flux guide and/or is arranged further to the outside in a radial direction than the first collection surface of the associated flux guide.