Sensor bearing with cover and method for manufacturing the sensor bearing

Abstract

Sensor bearing (1) for angle detection of a shaft in a traction machine, with a fixing sleeve (3), with a rolling bearing device (4), wherein the rolling bearing device (4) has an inner ring (5) and an outer ring (6) and a plurality of rolling elements (7) rolling between the inner ring (5) and the outer ring (6), wherein the outer ring (6) is connected to the fixing sleeve (3) and the inner ring (5) is connectable to the shaft, with a sensor system (8) for angle detection of the shaft and / or the inner ring (5), wherein the sensor system (8) comprises a circuit board (13) with at least one sensor (15) and an interface device (9) for electrical contacting the circuit board (13), and with a circuit board carrier (16), wherein the circuit board carrier (16) is arranged in the fixing sleeve (3) and the circuit board (13) is arranged in the circuit board carrier (16), where a) a conductor arrangement (22) is embedded at least partially in the circuit board carrier (16), b) the conductor arrangement (22) has a press-fit interface (23) at a first end section for direct press-fit contacting of the circuit board (13) and plug pins (25) at a second end section for forming the contacting of the interface device (9), c) the interface device (9) is molded onto the conductor arrangement (22) and / or the circuit board carrier (16), - and with a lid (30) which is welded around the circuit board carrier (16) by means of laser plastic welding, so that a receiving space (32) formed from the lid (30) and the circuit board carrier (16) for the circuit board (13) is sealed in a media-tight manner.

Description

[0001] The invention relates to a sensor bearing for the angle detection of a shaft in a traction machine with the features of the preamble of claim 1. The invention also relates to a method for manufacturing the sensor bearing.

[0002] For various reasons, electric vehicle drives require angle measurement of at least one shaft, usually the rotor shaft. Until now, this angle measurement was often achieved using a separate sensor device mounted on the shaft in addition to any bearings. This necessitated extensive assembly work.

[0003] The German patent application DE 10 2018 131 254 A1, which likely represents the closest prior art, relates to an annular sensor unit comprising a sensor element and a connecting element. The connecting element has an annular base with a circumferential outer wall, and the sensor element is inserted into the connecting element and overmolded with an adhesive. The sensor unit can be coupled to a rolling bearing, allowing the sensor unit and the rolling bearing to be mounted as a single assembly.

[0004] It is an object of the present invention to find a manufacturable variant for such a sensor bearing. This object is achieved by a sensor bearing with the features of claim 1 and by a method for manufacturing the sensor bearing with the features of claim 6. Preferred or advantageous embodiments of the invention will become apparent from the dependent claims, the following description, and the accompanying figures.

[0005] The invention relates to a sensor bearing, in particular annular, which is suitable and / or configured for angular sensing of a shaft in a traction machine. The sensor bearing functions, in particular, as a resolver, specifically as an angle resolver. The sensor bearing is preferably configured to perform absolute angular sensing of a rotational angle of the shaft. In less preferred embodiments, the sensor bearing is configured to perform incremental angular sensing of a rotational angle of the shaft. In particular, a rotational speed can be derived from the angular sensing.

[0006] In particular, the traction machine is an electric drive for the vehicle. Preferably, the traction machine serves to provide a main torque for the vehicle. The shaft can, in principle, be any shaft in the drive train of the traction machine between the electric motor and the vehicle wheel. However, the shaft is preferably designed as a rotor shaft. In particular, the shaft and / or the sensor bearing are arranged in a gear oil-lubricated gearbox of the traction machine. An optional aspect of the invention comprises a traction machine and / or a vehicle with the traction machine and the sensor bearing.

[0007] The sensor bearing includes a fixing sleeve. The fixing sleeve is preferably designed as a metal component. The fixing sleeve is annular and / or hollow cylindrical in its basic form. Preferably, the fixing sleeve is implemented as a single piece. For example, the fixing sleeve is implemented as a sheet metal part. The fixing sleeve serves two functions: firstly, to enclose components of the sensor bearing, and secondly, to provide a connection to a rolling bearing assembly.

[0008] The sensor bearing incorporates this rolling bearing assembly. The rolling bearing assembly comprises an inner ring and an outer ring, as well as a plurality of rolling elements that roll between the inner and outer rings. Preferably, the rolling elements are implemented as balls. The outer ring is connected to the fixing sleeve, in particular in a rotationally fixed manner. Preferably, the outer ring and the fixing sleeve have the same outer diameter. Particularly preferably, the outer ring is arranged, or can be arranged, in a stationary and / or rotationally fixed position within the traction machine. The inner ring, on the other hand, can be connected to the shaft, in particular, is connected to it. During operation, the inner ring thus rotates together with the shaft. In a preferred embodiment of the invention, the rolling bearing assembly is designed to be open to the medium, in particular gear oil, and / or oil-lubricated.For example, the rolling element chamber of the rolling bearing assembly is designed without seals on at least one side and / or is open for lubrication with gear oil.

[0009] The sensor bearing includes a sensor for detecting the angle of the shaft and / or the inner ring. Since the shaft and inner ring rotate together, their rotational speed and / or angular position are the same. Preferably, the sensor is designed as an inductive sensor. The sensor comprises a circuit board on which at least one sensor is arranged. Preferably, the sensor is designed as an inductive sensor. The sensor is formed, for example, by a transmitting and / or receiving antenna structure and a digital data processing device, such as an ASIC. For example, the sensor bearing includes a sensor rotor, which is rotationally fixed to the shaft and / or the inner ring, preferably the inner ring, wherein the sensor and / or the sensor can preferably measure information from the sensor rotor inductively. In alternative embodiments of the invention, the sensor and / or the sensor is designed as a capacitive sensor.In principle, it is also possible that the sensor and / or the sensor technology is based on a different measurement principle.

[0010] Furthermore, the sensor assembly features an interface for electrical, and in particular electronic, contact with the circuit board. Specifically, digital and / or analog signals from the sensor's angle detection are transmitted via this interface. The interface is fixedly mounted on the circuit board. Preferably, the interface is designed as a socket for a plug. The sensor assembly is located within the mounting sleeve. Preferably, the sensor assembly is positioned adjacent to the rolling bearing assembly when viewed in the axial direction.

[0011] The sensor housing includes a circuit board carrier, which is arranged within the fixing sleeve. The circuit board carrier holds the circuit board and thus the sensor.

[0012] The conductor assembly is embedded, at least partially, in the circuit board carrier. Thus, the conductor assembly, at least in the embedded section, is encased by a base material of the circuit board carrier, in particular in a media-tight manner. An exit from the receiving space is therefore formed via the conductor assembly; since the conductor assembly is embedded in the circuit board carrier, this exit is media-tight.

[0013] The invention proposes that the sensor bearing has a cover. The cover and the circuit board carrier together form a receiving space for the circuit board with the sensor. In particular, the receiving space is designed as an annular space. The cover is bonded to the circuit board carrier, so that the circuit board is protected in a media-tight manner within the receiving space.

[0014] One aspect of the invention is that by combining a circuit board carrier with a cover, the cover sealing the circuit board carrier in a media-tight manner to form the receiving space for the circuit board with the sensor, a very reliable seal against flowing media, such as gear oil, is achieved. Assembly is also comparatively simple, since after inserting the circuit board carrier, only assembly and joining are required; no further forming work is necessary in the sensor housing. This results in a manufacturable version of the sensor housing.

[0015] The cover is attached to the circuit board carrier using a laser plastic welding process, creating a material-bonded connection all around. This ensures that no additional shapeless material needs to be introduced into the sensor housing during the joining process.

[0016] The laser welding process offers the manufacturing advantage that the weld seam can be positioned between the two welding partners. Thus, with a suitable choice of base material, the laser beam can pass through the lid and only heat and weld the material at the interface between the lid and the circuit board carrier. In particular, the weld seam is so completely closed that the entire receiving space is media-tight.

[0017] The sensor bearing also features a conductor arrangement. The conductor arrangement preferably comprises a plurality of electrically parallel conductors. For example, the conductor arrangement comprises more than three, and in particular more than five, conductors arranged parallel to one another. The conductor arrangement, together with an interface-side end section, forms a contact point for the interface device. In particular, the conductor arrangement forms the contacts in the interface device. With its circuit board-side end section, the conductor arrangement provides a press-fit interface for the circuit board. In particular, the conductor arrangement has a plurality of contact pins at the circuit board-side end section as the press-fit interface.

[0018] The interface device is injection-molded onto the conductor assembly and / or the circuit board carrier. The interface device is thus manufactured by the injection molding process. The electrical contact of the interface device is provided by the conductor assembly. At this second end section, the conductor assembly has a plurality of connector pins, which form the contact points for the interface device.

[0019] It is preferred that the circuit board carrier has a support contour for the lid and the lid has a contact contour for the circuit board carrier, wherein the support contour and contact contour together form an overlap joint, which is designed to be suitable for laser welding of plastics. Preferably, the contact surfaces of the support contour and contact contour lie in a common radial plane with respect to the main axis of rotation, so that the laser does not have to compensate for any height offset during welding. However, this design with a support contour and contact contour for forming the overlap joint is also advantageous for other welding processes, such as ultrasonic welding, since it allows for reliable welding.

[0020] Preferably, the circuit board incorporates a receptacle for a press-fit connection. The press-fit connection utilizes a press-fit technique, which is designed as a solderless connection method. The circuit board features, for example, metallized holes, particularly vias, in which a contact pin of the conductor assembly is pressed into each metallized hole. Preferably, the contact pins are resilient in their radial direction to ensure reliable contact. The circuit board can be reliably contacted via the press-fit connection in a single operation. This enables highly efficient and reliable manufacturing of the sensor bearing. In summary, the conductor assembly forms an electrical extension from the circuit board to the interface device.

[0021] The proposed conductor arrangement offers numerous advantages: The press-fit interface simplifies circuit board contacting. The circuit board can be reliably contacted for all conductors simultaneously via this interface. Because the conductor arrangement is embedded in the circuit board carrier, the electrical signals are transmitted to the interface device in a media-tight manner. This embedding effectively forms a seal between the circuit board and the interior of the interface device. As a result, the preferred design allows for particularly easy assembly of the sensor bearing and eliminates the need for components such as seals.

[0022] In a preferred embodiment of the invention, the conductor arrangement is manufactured from a stamped grid. The stamped grid is designed as a sheet metal part that provides the majority of conductors, but initially connects them to one another via webs. The stamped grid is, in particular, a flat structure produced by stamping or, subsequently, a three-dimensional structure produced by bending. The stamped grid is particularly cost-effective to manufacture. The conductor arrangement is manufactured from the stamped grid by first placing it in the assembly and / or final position and then electrically insulating the individual conductors from one another by separating the webs. In this way, the sensor bearing is particularly easy and / or cost-effective to manufacture.

[0023] In a preferred embodiment of the invention, the circuit board carrier with the conductor arrangement is injection-molded into the fixing sleeve. The fixing sleeve is then inserted into a forming injection mold, the die-cut grid or the individual conductors are positioned in their final position, and subsequently the circuit board carrier is injected. This manufacturing process has the advantage that sealing the conductor arrangement with the liquid plastic during injection molding is particularly easy to achieve. Preferably, the plastic is a thermoplastic.

[0024] In a preferred embodiment of the invention, the sensor bearing comprises the sensor rotor described above, wherein the circuit board carrier, in particular a base of the circuit board carrier, and the sensor rotor are arranged directly adjacent to each other. Because the base of the circuit board carrier is also manufactured by the molding injection mold, it can be produced with high precision and / or with only small tolerances, so that the sensor rotor can be positioned very close to the circuit board carrier and, in this way, the at least one sensor in the sensor assembly can scan the sensor rotor with particular accuracy.

[0025] Another object of the invention relates to a method with the features of claim 6 for manufacturing the sensor bearing as previously described, wherein the cover is placed on the circuit board carrier and is bonded to it in a material-locking manner in order to protect the circuit board in a media-tight manner.

[0026] In a preliminary step, the circuit board carrier and the conductor assembly are injection-molded into the fixing sleeve together. First, the die-cut grid is inserted into the fixing sleeve. Subsequently, connecting links of the die-cut grid are separated to form the conductor assembly, which is already in its final position. The circuit board carrier is injected together with the conductor assembly. This allows the conductor assembly, as a die-cut grid, to be inserted into the fixing sleeve as a single piece, with the individual conductors being separated from each other only there. In particular, the injection molding process is implemented as a single-stage process. The die-cut grid is placed into the injection mold. After the connecting links are separated, thus isolating the conductors from each other, they are overmolded with plastic. Further components are then assembled.The use of press-fit connectors for attaching to a plug is disclosed. For this purpose, the circuit board carrier with plug is injection-molded onto the fixing sleeve as a thermoplastic part. Embedded in the circuit board carrier is a die-cut grid, which is designed as a press-fit connector at one end and as a plug pin at the other. The PCB is pressed onto the press-fit connectors of the circuit board carrier to achieve contact. To protect the PCB from external environmental influences, a thermoplastic cover is welded onto the circuit board carrier to close the housing. This optionally proposes a sensor bearing for angle detection in automotive traction motors, whose sensor has a plug, for which a circuit board carrier with plug is injection-molded onto a fixing sleeve as a plastic component.The core of the connection is a stamped grid, which is designed as a press-fit at one end and as a plug pin at the other end.

[0027] In an alternative embodiment of the invention, a pre-product is first formed, wherein the pre-product is designed as a plastic body with the injected conductor arrangement. The conductor arrangement is made from a stamped grid. The pre-product is then arranged in the circuit board carrier and injected. The subsequent steps are analogous to those described above.

[0028] Further features, advantages, and effects of the invention will become apparent from the following description of a preferred embodiment of the invention and the accompanying figures. These show: Fig. 1 a schematic three-dimensional representation of a sensor bearing as an embodiment of the invention; Fig. 2 a schematic longitudinal section view of the sensor bearing in the Fig. 1; Fig. 3 A schematic, three-dimensional representation of a stamped grid for the sensor bearing in the Fig. 1; Fig. 4 A schematic three-dimensional representation of the sensor bearing of the preceding figures without a cover; Fig. 5 A schematic, three-dimensional representation of the circuit board carrier in the sensor bearing of the preceding figures with a modified interface device.

[0029] The Fig. Figure 1 shows a schematic three-dimensional representation of a sensor bearing 1 as an embodiment of the invention. It serves for angular detection of a shaft in an automotive traction motor. The sensor bearing 1 is designed as a self-retaining assembly. The shaft can pass through the sensor bearing 1 via a central through-opening 2. The shaft and / or the sensor bearing 1 defines a main axis of rotation H.

[0030] The sensor bearing 1 has a fixing sleeve 3 and a rolling bearing assembly 4, in particular a radial rolling bearing assembly with an inner ring 5 and an outer ring 6 and a plurality of rolling elements 7 rolling between the inner ring 5 and the outer ring 6 ( Fig. 2) The inner ring 5 can be connected to the shaft in a rotationally fixed manner. The outer ring 6 is connected to the fixing sleeve 3 to form the self-retaining assembly.

[0031] The sensor bearing 1 has a sensor 8 for detecting the angle of the shaft and / or the inner ring 5. The sensor is, for example, designed as an inductive sensor. The sensor 8 has an interface device 9, wherein in this embodiment the interface device 9 is designed as a socket for a plug 10 with a cable 11.

[0032] The Fig. Figure 2 shows a schematic longitudinal section of the sensor bearing 1 from the Fig. 1. In this illustration, the rolling bearing assembly 4 with the inner ring 5, the outer ring 6, and the rolling elements 7 is more clearly visible. The retaining sleeve 3 is pushed onto the outer ring 6. For this purpose, the outer ring 6 has a receiving shoulder 12. For example, the retaining sleeve 3 can be clamped and / or pressed onto the outer ring 6.

[0033] As can be seen from the longitudinal section, the sensor assembly 8 has a circuit board 13, which is designed in a closed ring shape. The circuit board 13 is arranged adjacent to a sensor rotor 14, which is rotationally fixed to the inner ring 5. The circuit board 13 has at least one sensor 15, which may include a transmitting and / or receiving antenna structure and an electrical data processing device, such as an ASIC. During operation, the sensor 15 scans the sensor rotor 14. For example, the rotor 14 may have recesses or a structured pattern as sensor markings, and the sensor 15 uses these markings to detect the angular position of the sensor rotor 14 and thus perform an angle measurement for the inner ring 5 and / or the shaft.

[0034] As can be seen from Figures 2 and 5, the sensor bearing 1 has a circuit board carrier 16, which is designed as an injection-molded plastic part and is arranged and even injection-molded into the fixing sleeve 3. The circuit board carrier 16 has an annular base 17 with a projection 20, which is bounded by an inner wall 18 and an outer wall 19. The interface device 9 is arranged on the projection 20.

[0035] The inner wall 18 extends around the inner circumference of the circuit board carrier 16 and is circular. The outer wall 19 abuts the fixing sleeve 3 and extends beyond the extension 20 of the base 17 of the circuit board carrier 16. The base 17 of the circuit board carrier 16 is thus recessed and / or forms part of a receiving space 32. The circuit board 13 with the sensor 15 is arranged in the circuit board carrier 16, in particular in the receiving space 32 of the circuit board carrier 16.

[0036] The circuit board carrier 16 is bonded to the fixing sleeve 3 by injection molding. To improve the mechanical coupling, the fixing sleeve 3 has three recesses 21 in the form of rectangular windows, whereby the plastic of the circuit board carrier 16 is also arranged in the recesses 21 during injection molding, so that the circuit board carrier 16 is not only bonded but also positively locked in the fixing sleeve 3.

[0037] A conductor arrangement 22 is injected at least partially into the circuit board carrier 16.

[0038] The conductor assembly 22 has a plurality of contact pins as a press-fit interface 23 at one end section, which is positioned in the receiving space 32 of the circuit board carrier 16. The circuit board 13 has a receptacle 24 for the contact pins of the press-fit interface 23, wherein the receptacle 24 and the contact pins form a press-fit connection, i.e., a solderless electrical connection. For example, the contact pins are designed to be flexible in the radial direction relative to their own main axis, so that they can be inserted into metallized holes as receptacles 24 in the circuit board 13 and automatically make contact due to radial expansion. This allows the circuit board 13 to be reliably contacted in a single operation. Contacting is carried out in parallel for all contact pins of the conductor assembly 22 in the press-fit receptacles 24.

[0039] At the other end section, which is positioned in the interface device 9, the conductor arrangement 22 has a plurality of connector pins 25 that form the contact point for the interface device 9. A correspondingly complementary connector for contacting the sensor bearing 1 is plugged onto the connector pins 25. Because the conductor arrangement 22 is embedded at least partially, and in particular completely in an intermediate section, between the two end sections, the electrical contact of the circuit board 13 is media-tight and leads out of the receiving space 32 of the circuit board carrier 16.

[0040] The Fig. Figure 3 shows a schematic three-dimensional representation of a pre-product of the conductor arrangement 22, designed as a stamped grid 26. The stamped grid already has the connector pins 25 at one end section and the contact pins of the press-fit interface 23 at the other end section, which in this embodiment are electrically connected to each other by a plurality of conductors 27. The stamped grid 26 and / or the conductor arrangement 22 is already designed as a 3D component, with the contact pins extending perpendicular to the connector pins 25. In modified embodiments, the stamped grid 26 and / or the conductor arrangement 22 can also be U-shaped or straight. Webs 28 are arranged between the conductors 27, which connect the conductors 27 mechanically and electrically.During manufacturing, the die-cut grid 26 is inserted in its final position, whereby in the final position before or during the injection molding process the webs 28 are separated in order to electrically insulate the conductors 27 from each other.

[0041] The Fig. Figure 4 shows the sensor bearing 1 without the cover 30, showing the contact pins of the press-fit interface 23 protruding through the circuit board 13 and the plug pins 25 arranged in the interface device 9.

[0042] The Fig. Figure 5 also shows a detail section in the area of ​​the interface device 9, where it can be seen that the webs 28 are already separated and that insulation contours in the form of plastic blocks are even arranged between the conductors 27.

[0043] The interface device 9, in particular a housing of the interface device 9, is injection-molded onto the conductor arrangement 22 and / or onto the circuit board carrier 16. The circuit board carrier 16 with integrated conductor arrangement 22 and the interface device 9 are thus manufactured by the injection molding process. The interior of the interface device 9 with the connector pins 25 is media-tightly separated from the receiving space 32 for the circuit board 13 in the circuit board carrier 16 by the injection molding process.

[0044] The sensor rotor 14 is arranged directly adjacent to the rear of the circuit board carrier 16, in particular to the base 17 of the circuit board carrier 16. Specifically, only an air gap is arranged between the sensor rotor 14 and the base 17. The air gap can be designed to be particularly narrow because the base 17 is manufactured with low tolerances by the molding tool.

[0045] The fixing sleeve 3 has two outwardly projecting tabs 29, which are aligned parallel to each other. The circuit board 13 has the extension 20, which also has side edges parallel to each other and / or to the projecting tabs 23. The extension 20 is arranged between the tabs 23, so that these form an angular definition and / or an anti-rotation device for the circuit board 13 in the fixing sleeve 3.

[0046] The sensor holder 1 has a cover 30, which is arranged on the circuit board carrier 16 and seals the receiving space 32 for the circuit board 13 in a media-tight manner. The cover 30 is annular and has a cover extension 31, wherein the annular section covers the annular section of the circuit board carrier 16 and the cover extension 31 covers the extension 20 at least partially. In particular, the cover extension 31 extends to the interface device 9. Thus, the circuit board 13 and the contact pins 23 of the conductor arrangement 22 are arranged in the receiving space 32 and are protected in a media-tight manner.

[0047] The inner wall 18 and the outer wall 19 of the circuit board carrier 16 each form a support contour 33 for the cover 30. Thus, the cover 30 rests on the circular inner wall 18 at its inner circumference. At its outer circumference, the cover 30 rests on the outer wall 19, which is largely circular and / or parallel to the fixing sleeve 3. At the extension 20, the outer wall 19 forms a rectangle open to the receiving space 32. The support contour 33 for the cover 30 lies in a common plane at both the inner and outer circumferences. The cover 30 has a contact contour 34, which is parallel to the support contour 33. After the circuit board 13 has been mounted on the circuit board carrier 16, the cover 30 is placed on the circuit board carrier 16 and bonded to it. In principle, the circuit board carrier 16 can be glued to the cover 30.In this embodiment, the cover 30 is laser-welded, with the laser being guided through the cover 30 to the joint formed by the contact contour 34 and the support contour 33, and welding the cover 30 to the circuit board carrier 16. Thus, a laser weld seam lies in the contact plane between the contact contour 34 and the support contour 33. In this way, the receiving chamber 32 can be sealed in a media-tight manner. Reference symbol list 1 sensor bearing 2. Through opening 3 fixing sleeves 4 rolling bearing assembly 5 inner ring 6 outer ring 7 rolling elements 8 Sensors 9 Interface setup 10 plugs 11 cables 12. Shoulder 13 circuit boards 14 Sensor rotor 15 Sensor 16 circuit board carriers 17 Base of the circuit board carrier 18 inner wall 19 outer wall 20 continuation 21 cutouts 22 Ladder arrangement 23 Press-fit interface 24 recordings 25 connector pins 26 punched grids 27 leaders 28 bridges 29 tabs 30 lids 31 Cover extension 32 Recording room 33 Support contour 34 Plant contour

Claims

[1] Sensor bearing (1) for angle detection of a shaft in a traction machine, with a fixing sleeve (3), with a rolling bearing device (4), wherein the rolling bearing device (4) has an inner ring (5) and an outer ring (6) and a plurality of rolling elements (7) rolling between the inner ring (5) and the outer ring (6), wherein the outer ring (6) is connected to the fixing sleeve (3) and the inner ring (5) is connectable to the shaft, with a sensor system (8) for angle detection of the shaft and / or the inner ring (5), wherein the sensor system (8) comprises a circuit board (13) with at least one sensor (15) and an interface device (9) for electrical contacting the circuit board (13), and with a circuit board carrier (16), wherein the circuit board carrier (16) is arranged in the fixing sleeve (3) and the circuit board (13) is arranged in the circuit board carrier (16), where a) a conductor arrangement (22) is embedded at least partially in the circuit board carrier (16), b) the conductor arrangement (22) has a press-fit interface (23) at a first end section for direct press-fit contacting of the circuit board (13) and plug pins (25) at a second end section for forming the contacting of the interface device (9), c) the interface device (9) is molded onto the conductor arrangement (22) and / or the circuit board carrier (16), - and with a lid (30) which is welded around the circuit board carrier (16) by means of laser plastic welding, so that a receiving space (32) formed from the lid (30) and the circuit board carrier (16) for the circuit board (13) is sealed in a media-tight manner. [2] Sensor bearing (1) according to claim 1, characterized by, that the circuit board carrier (16) has a support contour (33) for supporting the cover (30) and the cover (30) has a contact contour (34) for supporting the circuit board carrier (16), wherein the support contour (33) and the contact contour (34) form an overlap joint in a common radial plane to a main axis of rotation (H) of the sensor bearing (1). [3] Sensor bearing (1) according to claim 1, characterized by , that the ladder arrangement (22) is made from a stamped grid (26). [4] Sensor bearing (1) according to one of the preceding claims, characterized by , that the circuit board carrier (16) with the conductor arrangement (22) is injected into the fixing sleeve (3). [5] Sensor bearing (1) according to any one of the preceding claims, characterized by a sensor rotor (14) wherein the sensor rotor (14) is connected to the inner ring (5) in a rotationally fixed manner, wherein a base (17) of the circuit board carrier (16) and the sensor rotor (14) are arranged immediately adjacent to each other. [6] Method for manufacturing the sensor bearing (1) according to any one of the preceding claims, comprising the steps a) Providing a fixing sleeve (3) and b) Injection of a circuit board carrier (16) made of thermoplastic together with a conductor arrangement (22) into the fixing sleeve (3) wherein first a punched grid (26) is inserted into the fixing sleeve (3), subsequently webs (28) of the punched grid (26) are separated to form the conductor arrangement (22), wherein the die-cut grid (26) has a press-fit interface (23) at a first end section and plug-in pins (25) at a second end section, wherein the conductor arrangement (22) is injected into the circuit board carrier (16) so that the conductor arrangement (22) is embedded at least sectionally in the circuit board carrier (16), c) Molding an interface device (9) from thermoplastic onto the circuit board carrier (16) and onto the conductor arrangement (22), leaving the connector pins (25) and the press-fit interface (23) exposed, d) Pressing the circuit board (13) onto the press-fit interface (23), e) Placing a cover (30) on the circuit board carrier (16) and performing circumferential laser plastic welding so that the receiving space (32) is sealed in a media-tight manner.

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