Hollow shaft device for an electromechanical roll stabilization device for a vehicle, electromechanical roll stabilization system and method for manufacturing a hollow shaft device

Abstract

Hollow shaft device (110) for an electromechanical roll stabilization system (105) for a vehicle (100), wherein the hollow shaft device (110) has the following features: a hollow shaft (115) whose cavity (125) is shaped to receive a sensor (130) for detecting a sensor value of a physical parameter of the hollow shaft (115); and a shielding element (120) which is arranged or can be arranged on at least one outer wall section (135) of an outer wall (140) of the hollow shaft (115), wherein the shielding element (120) is shaped to shield environmental influences from the outer wall section (135) and / or sensor (130) when the sensor (130) is accommodated in the cavity (125), characterized in that it comprises the sensor (130) which is received or can be received in the cavity (125), wherein the sensor (130) is arranged or can be arranged on an inner wall section (145) of the hollow shaft (115), and wherein the inner wall section (145) is arranged directly opposite at least one area of ​​the outer wall section (135).

Description

[0001] The present approach relates to a hollow shaft device for an electromechanical roll stabilization device for a vehicle, an electromechanical roll stabilization system and a method for manufacturing a hollow shaft device.

[0002] To detect the torque of a vehicle, a deformable body can be used which deforms depending on the applied torque. In this context, reference is made, for example, to DE 10 2014 208 485 A1 and DE 10 2015 203 096 A1, from which a hollow shaft device according to the preamble of claim 1 is known.

[0003] Against this background, the present approach provides an improved hollow shaft device for an electromechanical roll stabilization device for a vehicle, an improved electromechanical roll stabilization system, and a method for manufacturing an improved hollow shaft device according to the main claims. Advantageous embodiments are described in the dependent claims and the following description.

[0004] The advantages achievable with the presented approach are that torque measurement can be carried out unaffected or at least only slightly affected by environmental influences.

[0005] A hollow shaft device for an electromechanical roll stabilization system for a vehicle comprises a hollow shaft and a shielding element. A cavity within the hollow shaft is shaped to accommodate a sensor for detecting a sensor value of a physical parameter of the hollow shaft. The shielding element is arranged, or can be arranged, on at least one outer wall section of the hollow shaft and is shaped to shield the outer wall section and / or sensor from environmental influences when the sensor is housed within the cavity.

[0006] Electromechanical roll stabilization (ERC) works as follows: Active electromechanical roll stabilizers on the front and rear axles of the vehicle generate stabilizing moments during cornering, minimizing or completely eliminating body roll. This also ensures optimal steering and load transfer behavior. When driving straight ahead, an electronic control system adjusts the damping, resulting in a softer, more comfortable suspension response. Body roll is reduced, giving the vehicle high agility and precision across the entire speed range. This electronic actuator can be used, for example, in mid-range and luxury vehicles, including those with hybrid or electric drive systems.

[0007] The hollow shaft device can now serve to shield the hollow shaft of the electromechanical roll stabilization system, which, during operation, can detect, for example, a vehicle's torque and is exposed to various environmental influences such as stone impacts, temperature fluctuations, and magnetic fields, thanks to the shielding element. The hollow shaft can be designed and used as a housing for the electromechanical roll stabilization system, for example, at least for an ERC controller. Furthermore, the hollow shaft can be designed to be deformable, for example, as a Hookean deformation element. During operation of the hollow shaft device, the hollow shaft thus reacts to an externally applied axial torque in a linear manner through a torsional deformation.The sensor can be a torque sensor, for example a strain gauge, a magnetostrictive element, an acoustic sensor, and additionally or alternatively an optical sensor, which is designed to indicate a deformation of the hollow shaft during operation of the hollow shaft device as the sensor value, thus making the torque detectable using this deformation. The hollow shaft itself can therefore be referred to as a primary sensor and the sensor as a secondary sensor.

[0008] According to the invention, the hollow shaft device also includes the sensor, which is received or can be received in the cavity. According to the invention, the sensor is arranged or can be arranged on an inner wall section of the hollow shaft, wherein the inner wall section is arranged directly opposite at least one region of the outer wall section. A directly opposite arrangement of the sensor and the shielding element can prevent a sensor reading that is distorted by environmental influences on the hollow shaft.

[0009] It is also advantageous if the width of the shielding element essentially corresponds to the width of the sensor. "Essentially" can be understood as a deviation of 10 percent or 20 percent between the shielding element width and the sensor width. In this way, the shielding element can cover the entire width of the sensor. Both the shielding element width and the sensor width can be dimensions extending parallel to the longitudinal axis of the hollow shaft.

[0010] The shielding element can, for example, be ring-shaped or segment-shaped around the outer wall section, or be designed to be receptively mounted. A ring-shaped shielding element can be arranged around the entire outer wall section. A segment-shaped shielding element can cover at least the area of ​​the outer wall section where the sensor is located directly opposite on the inner wall section.

[0011] The shielding element can also be arranged, or be arranged, on the outer wall section that is positioned in a recess within the outer wall. In this case, one surface of the shielding element can be flush with the outer wall, or the surface can protrude beyond the outer wall. Such a recess, in the form of a reduced hollow wall thickness, can compensate for the sensitivity of the measuring point to the actual load.

[0012] It is also advantageous if the shielding element is at least partially made of an elastic material. This elastic material could be, for example, rubber. The shielding element can be entirely elastic. However, the shielding element can also have at least one elastic section within an otherwise rigid material.

[0013] According to one embodiment, the shielding element can at least partially comprise a rigid material. This rigid material can, for example, be metal. The shielding element can be completely rigid. However, the shielding element can also have at least one rigid section within an otherwise elastic material of the shielding element.

[0014] It is also advantageous if the shielding element has at least one tapered and / or curved edge. Such an edge can be tapered or curved towards the outer wall if the shielding element is positioned on the outer wall section. This creates an aerodynamic shape for the shielding element on the hollow shaft. Furthermore, stresses occurring during operation of the hollow shaft device due to temperature and / or impacts on the hollow shaft can be distributed over a larger area.

[0015] A cross-section of the shielding element can be shaped as a trough and / or have a kink to form a contact area for contacting the trough with the outer wall section, in particular wherein a filler material can be arranged in the trough between the hollow shaft and the shielding element. The trough and / or the kink can be formed in one piece and / or comprise a rigid material such as metal. The filler material is to be understood as a material different from air, for example, a solid material such as rubber. In an assembled state, the trough can have a trough-like recess on the hollow shaft, which creates a gap between the shielding element and the area. This gap can prevent the shielding element from transmitting torque from the hollow shaft during operation of the hollow shaft device. The filler material can be arranged in the gap to prevent the ingress of dirt.

[0016] An electromechanical roll stabilization system comprises an electromechanical roll stabilization device and a hollow shaft device, configured in one of the variants described above. Such an electromechanical roll stabilization system can counteract the roll of a vehicle, whereby the hollow shaft used to detect the vehicle's torque is protected from environmental influences, thus enabling particularly reliable sensor readings.

[0017] A method for manufacturing a hollow shaft device for an electromechanical roll stabilization device for a vehicle comprises a provisioning step and assembly steps. In the provisioning step, a hollow shaft, the cavity of which is shaped to receive a sensor for detecting a sensor value of a physical parameter of the hollow shaft, and a shielding element are provided. In an assembly step, the shielding element is positioned on at least one outer wall section of an outer wall of the hollow shaft such that the shielding element protects the outer wall section and / or sensor from environmental influences when the sensor is received in the cavity. In a further assembly step, the sensor is positioned in the cavity on an inner wall section of the hollow shaft, the inner wall section being arranged directly opposite at least one region of the outer wall section.

[0018] In the installation step, the shielding element can be pulled, glued or sprayed onto the outer wall section.

[0019] This process can be implemented, for example, in software or hardware, or in a hybrid form of software and hardware, for example in a control unit.

[0020] The approach presented here also creates a device designed to carry out, control, and implement the steps of a variant of the method presented here in appropriate facilities. This device-based implementation of the approach also allows the underlying problem to be solved quickly and efficiently.

[0021] A device can be an electrical device that processes electrical signals, such as sensor signals, and outputs control signals accordingly. The device can have one or more suitable interfaces, which can be implemented in hardware and / or software. In the case of a hardware implementation, the interfaces can, for example, be part of an integrated circuit in which the device's functions are implemented. The interfaces can also be separate integrated circuits or consist at least partially of discrete components. In the case of a software implementation, the interfaces can be software modules that are present, for example, on a microcontroller alongside other software modules.

[0022] It is also advantageous to have a computer program product with program code that can be stored on a machine-readable medium such as semiconductor memory, hard disk memory or optical memory and is used to carry out the method according to one of the embodiments described above when the program is executed on a computer or device.

[0023] Examples of the approach presented here are shown in the drawings and explained in more detail in the following description. They show: Fig. 1 a schematic representation of a vehicle with an electromechanical roll stabilization system with a hollow shaft device according to an embodiment; Fig. 2 a schematic representation of a hollow shaft device according to an exemplary embodiment; Fig. 3 a schematic representation of a hollow shaft device according to an exemplary embodiment; Fig. 4 a schematic representation of a hollow shaft device according to an exemplary embodiment; Fig. 5 a schematic cross-sectional view of an electromechanical roll stabilization system with a hollow shaft device according to an exemplary embodiment; and Fig. 6 a flowchart of a method for manufacturing a hollow shaft device for an electromechanical roll stabilization device for a vehicle according to an embodiment.

[0024] In the following description of preferred embodiments of the present approach, the same or similar reference numerals are used for the elements shown in the various figures and having a similar effect, without repeating these elements.

[0025] Fig. Figure 1 shows a schematic representation of a vehicle 100 with an electromechanical roll stabilization system 105 with a hollow shaft device 110 according to an exemplary embodiment.

[0026] The electromechanical roll stabilization system 105, which comprises an electromechanical roll stabilization device 112 and the hollow shaft device 110, is shown mounted on the vehicle according to this embodiment, but only as an example. The electromechanical roll stabilization device 112 is in Fig. 5 shown in more detail.

[0027] The electromechanical roll stabilization device 112 is designed to perform electromechanical roll stabilization, or "ERC" for short, for the vehicle 100. According to one embodiment, this works as follows: Active electromechanical roll stabilizers on a front and / or rear axle of the vehicle 100 generate stabilizing moments during cornering, thus minimizing or completely eliminating body roll. Additionally, according to one embodiment, optimal steering and load transfer behavior is achieved. During straight-line driving, on the other hand, according to one embodiment, an electronic control system adjusts the damping level, ensuring a softer, more comfortable suspension response.According to one embodiment, the copying motion of the superstructure is reduced, thereby giving the vehicle 100 high agility and accuracy across the entire speed range. In this embodiment, the vehicle 100 is a mid-range or upper-range vehicle with any type of drive system, in this case a hybrid or electric drive.

[0028] The hollow shaft device 110 comprises a hollow shaft 115 and a shielding element 120. A cavity 125 of the hollow shaft 115 is formed to accommodate a sensor 130 for detecting a sensor value of a physical parameter of the hollow shaft 115. The shielding element 120 is arranged or can be arranged on at least one outer wall section 135 of an outer wall 140 of the hollow shaft 115 and is formed to shield environmental influences from the outer wall section 135 and / or sensor 130 when the sensor 130 is accommodated in the cavity 125.

[0029] According to this embodiment, the hollow shaft device 110 is shown in an operational state, in which the shielding element 120 is arranged on the outer wall section 135. The sensor 130 is further accommodated in the cavity 125, according to this embodiment, on an inner wall section 145 of an inner wall of the hollow shaft 115 opposite the outer wall 140. According to this embodiment, the hollow shaft 115 is a housing of the electromechanical roll stabilization device 112, for example, for a so-called "ERC controller" of the electromechanical roll stabilization device 112. During operation, the hollow shaft 115 serves to detect, for example, a torque of the vehicle 100 and is thereby exposed to various environmental influences such as stone impacts, temperatures, and / or magnetic fields.The hollow shaft device 110 presented here now makes it possible, thanks to the shielding element 120, to shield the hollow shaft 115 from these environmental influences.

[0030] According to this embodiment, the hollow shaft 115 is designed to be deformable. During operation of the hollow shaft device 110, the hollow shaft 115 reacts linearly to an externally applied axial torque by means of a torsional deformation. According to this embodiment, the sensor 130 is a torque sensor, for example, a strain gauge, a magnetostrictive element, an acoustic and / or optical sensor, which is designed to indicate the deformation of the hollow shaft 115 as the sensor value during operation of the hollow shaft device 110, thus making the torque detectable using the deformation.

[0031] According to this embodiment, the hollow shaft device 110 further comprises the sensor 130, a recess 150, a first flange 155 and / or a second flange 160.

[0032] According to this embodiment, the inner wall section 145, which the sensor 130 contacts, is arranged directly opposite at least one area of ​​the outer wall section 135, which the shielding element 120 contacts. According to this embodiment, the shielding element 120 is mounted in a ring shape around the outer wall section 135.

[0033] According to this embodiment, the shielding element 120 is received in the recess 150, which is arranged within the outer wall 140 and extends in an annular shape around the entire outer wall section 135. According to this embodiment, the recess 150 has a rectangular cross-section and / or is completely filled by the shielding element 120. According to this embodiment, one surface of the shielding element 120 is flush with the outer wall 140. According to an alternative embodiment, the surface projects beyond the outer wall 140. According to this embodiment, the shielding element 120 comprises at least a portion of an elastic material. According to this embodiment, the shielding element 120 is entirely elastic, for example, made of rubber. According to an alternative embodiment, the shielding element 120 comprises at least a portion of a rigid material.

[0034] According to this embodiment, the shielding element width of the shielding element 120 essentially corresponds to the sensor width of the sensor 130. In one embodiment, the shielding element width deviates from the sensor width by 10 percent or 20 percent. The shielding element width and the sensor width are arranged parallel to each other and are to be understood as dimensions extending parallel to a longitudinal axis of the hollow shaft 115.

[0035] The hollow shaft device 110 presented here enables the measurement of torque on an ERC system within the hollow shaft 115 of the ERC housing. This location is well protected from environmental influences and, being near an electronic control unit, allows for easy connection to the electromechanical roll stabilization device 112. The actual measuring element, however, is the hollow shaft 115, which, according to this embodiment, is designed as a Hookean deformation element and can be referred to as the "primary sensor." Sensor 130, which can be referred to as the "secondary sensor," is mounted inside the hollow shaft 115. While sensor 130 is protected within the hollow shaft 115, the hollow shaft 115 is directly exposed during operation to environmental influences such as stone impacts, temperature, temperature gradients (e.g., driving through icy water or a car wash on a cold winter morning), magnetic fields, etc.Thanks to the shielding element 120, a customized torque measurement is now possible. According to this embodiment, the flanges 155 and 160 serve to introduce torque during operation of the hollow shaft device 110. To adapt the strain at the measuring point to the hollow shaft material (linear plastic behavior) and the sensor effect (signal-to-noise behavior), the wall thickness of the hollow shaft 115 is appropriately adjusted in this embodiment. This is achieved, according to this embodiment, by the recess 150 in the form of a turning or milling indentation on the outer wall 140 in the area of ​​the secondary sensor. This recess 150 is filled with a soft material such as rubber in this embodiment. This provides protection against the aforementioned environmental influences.The hollow shaft device 110 is shown here by way of example with the turning or milling for adapting the measuring point sensitivity to the actual load and with the shielding element 120 in the form of a ring or an annular overmolding, etc., made of an advantageously elastic material, which protects the outer wall section 135 as measuring point from external influences.

[0036] Fig. Figure 2 shows a schematic representation of a hollow shaft device 110 according to an exemplary embodiment. This could be the one described in Fig. The hollow shaft device 110 described in Figure 1 differs from the shielding element 120 described in this embodiment, with the difference that the shielding element 120 has at least one tapered and / or curved edge 200, which is formed circumferentially. In this embodiment, the shielding element 120 has such an edge 200 at each of two opposite ends. The edge 200 is tapered and curved towards the outer wall 140.

[0037] According to this embodiment, the shielding element 120 is formed as a raised rubber coating or a raised, circumferential ring made of elastic material, shown here by way of example without the recess in the hollow shaft. According to an alternative embodiment, the ring is in the Fig. The recess described in section 1 is arranged flush with the outer wall or protrudes beyond the outer wall.

[0038] Fig. Figure 3 shows a schematic representation of a hollow shaft device 110 according to an exemplary embodiment. This could be the one described in Fig. 1 or Fig. The hollow shaft device 110 described in Figure 2 differs in that the shielding element 120 in this embodiment is not ring-shaped, but rather segmented in a ring. In this embodiment, the shielding element 120 is only attached to the area directly opposite the inner wall section where the sensor 130 is contacted. In this embodiment, the shielding element 120 is formed as a raised, local "patch" of elastic material, shown here by way of example without the recess in the hollow shaft. In an alternative embodiment, the patch is shown with or without the recess described in Figure 2. Fig. 2. The edge described above is arranged in a recess in the outer wall adapted to the geometry of the patch and / or is flush with the outer wall or is arranged to protrude beyond the outer wall.

[0039] Fig. Figure 4 shows a schematic representation of a hollow shaft device 110 according to an embodiment. This can be one of the hollow shaft devices 110 described in one of the preceding figures, with the difference that the shielding element 120 in this embodiment has at least a partial rigid material. In this embodiment, the shielding element 120 is completely rigid and made of metal.

[0040] In this embodiment, a cross-section of the shielding element 120 is shaped as a trough 400 and / or has a kink 405 to form a contact area 407 for contacting the trough 400 with the outer wall section. In this embodiment, the trough 400, when mounted on the hollow shaft, has a trough-like recess that creates a gap 410 between the shielding element 120 and the area of ​​the outer wall section. In this embodiment, the trough 400 has tapered and / or curved side walls, each of which transitions into one of the kinks 405 with subsequent contact areas 407. The contact areas 407 are connected to the outer wall, for example, by circumferential fastening.

[0041] According to an alternative embodiment, a filling material is arranged in the trough 400, i.e., in the gap 410, between the hollow shaft and the shielding element 120. The filling material is to be understood as a material different from air, for example a solid material such as rubber.

[0042] According to this embodiment, the shielding element 120 is formed as a circumferential protective ring made of a hard material, here, for example, metal. The essential feature is the gap 410, which can also be referred to as the "annular gap," preventing the protective ring from transmitting torque from the hollow shaft. According to an alternative embodiment, the annular gap is filled with an elastic material to prevent the ingress of dirt.

[0043] A key innovation of the hollow shaft device 110 presented here is the shielding element 120 in the form of a protective ring or "patch," which prevents or at least hinders the direct impact of stone chips, heat, and magnetic fields on the hollow shaft. Another feature is the optional combination with indentations or milled recesses (also called thickenings) in the area of ​​the measuring point, which allows the mechanical sensitivity of the measuring point to be adjusted to the torque measuring principle by varying the thickness.

[0044] The hollow shaft device 110 presented here enables the use / utilization of a property / design detail that determines the sensitivity and design of a torque sensor element for the protection and interference suppression of the measuring point.

[0045] Fig. Figure 5 shows a schematic cross-sectional view of an electromechanical roll stabilization system 105 with a hollow shaft device 110 according to an exemplary embodiment. This could be the one described in Fig. 1 described electromechanical roll stabilization system 105, which is one of the in one of the Fig. The hollow shaft devices 110 described in sections 1 to 4 are also present. Vehicle 100 can also be used in this way. Fig. 1 described vehicle 100 be.

[0046] The purely schematic representation shows a section through the vehicle 100 along its vertical and transverse axes. Shown, for example, is a first axle 500 with an embodiment of the roll stabilization device 112, also referred to as a stabilizer. The roll stabilization device 112 is implemented as a two-part torsion bar with a first stabilizer element 505 and a second stabilizer element 510. One end of the first stabilizer element 505 is connected to a first wheel suspension element 515 of the vehicle 100, and one end of the second stabilizer element 510 is connected to a second wheel suspension element 520 of the vehicle 100.

[0047] For example, the ends of the stabilizer elements 505, 510 are designed as arms, preferably bent or cranked approximately in the direction of travel, which are connected to the wheel suspension elements 515, 520 by means of articulated pendulum supports 525, 530. The wheel suspension elements 515, 520 are, for example, opposing control arms of the vehicle 100. The stabilizer elements 505, 510 are each rotatably mounted to a chassis or the body of the vehicle 100 about a common axis of rotation DD by means of a mounting bearing 535. The axis of rotation DD corresponds, for example, to the transverse axis of the vehicle 100.

[0048] Each end of the stabilizer elements 505, 510, facing the center of the vehicle 100, is mechanically coupled to at least one electric motor of a three-phase drive unit 540, which serves as an actuator. The three-phase drive unit 540 is designed to rotate the stabilizer elements 505, 510 in opposite directions about the axis of rotation DD using a control signal 545 from a control device 550. The control signal 545 represents, for example, a signal determined based on field-oriented control. By rotating the stabilizer elements 505, 510 in opposite directions, the wheel suspension elements 515, 520 are moved, thus counteracting body roll, for example, when cornering. According to one embodiment, the vehicle 100 is equipped with the control device 550, which is connected to the three-phase drive unit 540 and is designed to provide the control signal 545.

[0049] The electromechanical roll stabilization system 105 can also include a second electromechanical roll stabilization device, which can be designed accordingly to the roll stabilization device 112. Alternatively, an alternative roll stabilization principle can be used. For example, the stabilizer elements 505, 510 can be omitted if the counter-roll moments are provided, for example, by suitable actuators in the wheel suspension elements 515, 520.

[0050] Fig. Figure 6 shows a flowchart of a method 600 for manufacturing a hollow shaft device for an electromechanical roll stabilization device for a vehicle according to an exemplary embodiment. This can be one of the methods described in one of the Fig. These are the hollow shaft devices described in sections 1 to 5.

[0051] Method 600 comprises a provisioning step 605 and an arrangement step 610. In provisioning step 605, a hollow shaft, the cavity of which is shaped to receive a sensor for detecting a sensor value of a physical parameter of the hollow shaft, and a shielding element are provided. In arrangement step 610, the shielding element is arranged on at least one outer wall section of an outer wall of the hollow shaft such that the shielding element protects the outer wall section and / or sensor from environmental influences when the sensor is received in the cavity.

[0052] According to this embodiment, in step 610 of the arrangement, the shielding element is pulled, glued or injection-molded onto the outer wall section.

[0053] The embodiments described and shown in the figures are only examples. Different embodiments can be combined completely or with respect to individual features. An embodiment can also be supplemented by features from another embodiment.

[0054] Furthermore, the procedural steps presented here can be repeated and carried out in a different order than described.

[0055] If an embodiment includes an “and / or” connection between a first feature and a second feature, this is to be read as meaning that the embodiment according to one embodiment has both the first feature and the second feature, and according to another embodiment either only the first feature or only the second feature. Reference sign 100 vehicles 105 electromechanical roll stabilization system 110 Hollow shaft device 112 electromechanical roll stabilization device 115 Hollow shaft 120 shielding elements 125 cavity 130 Sensor 135 Exterior wall section 140 Exterior wall 145 Interior wall section 150 In-depth study 155 first flange 160 second flange 200 Rand 400 tub 405 Folding point 407 Contact area 410 gap 500 first axle 505 first stabilizer element 510 second stabilizer element 515 first wheel suspension element 520 second wheel suspension element 525 first pendulum support 530 second pendulum support 535 assembly camp 540 Three-phase drive unit 545 Control signal 550 Control device 600 Methods for manufacturing a hollow shaft device Step 605 of deployment Step 610 of the arranging process

Claims

[1] Hollow shaft device (110) for an electromechanical roll stabilization system (105) for a vehicle (100), wherein the hollow shaft device (110) has the following features: a hollow shaft (115) whose cavity (125) is shaped to receive a sensor (130) for detecting a sensor value of a physical parameter of the hollow shaft (115); and a shielding element (120) which is arranged or can be arranged on at least one outer wall section (135) of an outer wall (140) of the hollow shaft (115), wherein the shielding element (120) is shaped to shield environmental influences from the outer wall section (135) and / or sensor (130) when the sensor (130) is accommodated in the cavity (125), characterized by, that this includes the sensor (130) which is received or can be received in the cavity (125), wherein the sensor (130) is arranged or can be arranged on an inner wall section (145) of the hollow shaft (115), and wherein the inner wall section (145) is arranged directly opposite at least one area of ​​the outer wall section (135). [2] Hollow shaft device (110) according to claim 1, wherein a shielding element width of the shielding element (120) substantially corresponds to a sensor width of the sensor (130). [3] Hollow shaft device (110) according to one of the preceding claims, in which the shielding element (120) is received or received in a ring-shaped or ring-section-shaped manner around the outer wall section (135). [4] Hollow shaft device (110) according to one of the preceding claims, wherein the shielding element (120) is arranged or can be arranged on the outer wall section (135) which is arranged in a recess (150) within the outer wall (140). [5] Hollow shaft device (110) according to one of the preceding claims, wherein the shielding element (120) has at least partially an elastic material. [6] Hollow shaft device (110) according to one of the claims, wherein the shielding element (120) has at least partially a rigid material. [7] Hollow shaft device (110) according to one of the claims, wherein the shielding element (120) has at least one tapered and / or curved edge (200). [8] Hollow shaft device (110) according to one of the claims, wherein a cross-section of the shielding element (120) is formed as a trough (400) and / or has a kink (405) to form a contact area (407) for contacting the trough (400) with the outer wall section (135), in particular wherein a filling material is arranged in the trough (400) between the hollow shaft (115) and the shielding element (120). [9] Electromechanical roll stabilization system (105) comprising an electromechanical roll stabilization device (112) and a hollow shaft device (110) according to one of the preceding claims. [10] Method (600) for manufacturing a hollow shaft device (110) for an electromechanical roll stabilization device (112) for a vehicle (100), wherein the method (600) comprises the following steps: Providing (605) a hollow shaft (115) whose cavity (125) is shaped to receive a sensor (130) for detecting a sensor value of a physical parameter of the hollow shaft (115), and a shielding element (120); Arranging (610) the shielding element (120) on at least one outer wall section (135) of an outer wall (140) of the hollow shaft (115) such that the shielding element (120) shields environmental influences from the outer wall section (135) and / or sensor (130) when the sensor (130) is housed in the cavity (125); and Arranging the sensor (130) in the cavity (125) on an inner wall section (145) of the hollow shaft (115), wherein the inner wall section (145) is arranged directly opposite at least one area of ​​the outer wall section (135). [11] Device configured to perform and / or control the steps (605, 610) of the method (600) according to claim 10 in corresponding units. [12] Computer program configured to execute and / or control the steps (605, 610) of the method (600) according to claim 10.

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