Granted Patent B2

US 12,650,321 · App. 18/558,879 · Granted Jun 9, 2026

Inventors: Klaus Lerchenmueller (Rettenberg, DE); Lothar Detels (Burgberg, DE); Konstantin Haberkorn (Stuttgart, DE); Wolfgang Sinz (Oberreute, DE)

Assignee: ROBERT BOSCH GMBH

G01D5/2053B60T13/745B60T17/22H02K11/21

Abstract

Claims (30)

1 . A sensor device for detecting a rotational position of a rotor of an electric machine, the sensor device comprising:

at least one sensor element; and

at least one electronic component connected electrically to the sensor element, the sensor element and the electronic component being disposed on one common printed circuit board of the sensor device;

wherein the printed circuit board has at least a first rigid board part, a second rigid board part, and a flexible board part, the second rigid board part being joined to the first rigid board part by the flexible board part, the sensor element being disposed on the first rigid board part and the electronic component being disposed on the second rigid board part,

wherein the printed circuit board has a third rigid board part, and a further flexible board part, the third rigid board part being joined to the second rigid board part by the further flexible board part, and a connection device for the electrical connection of the sensor device to a control unit being disposed on the third rigid board part.

2 . The sensor device as recited in claim 1 , wherein the first rigid board part is annular-disk-shaped.

3 . The sensor device as recited in claim 1 , wherein the sensor element and the electronic component are disposed on different faces of the printed circuit board.

4 . The sensor device as recited in claim 1 , wherein the connection device has at least one electroconductive connector having a first contact section and a second contact section, the first contact section being pressed into a press-fit opening of the third rigid board part, and the second contact section being connected or connectable electrically to the control unit.

5 . The sensor device as recited in claim 4 , wherein the connector is angled.

6 . A drive device, comprising:

an electric machine, disposed in a housing and having a rotationally mounted rotor and a sensor device, fixed to the housing, configured to detect a rotational position of the rotor;

wherein the sensor device includes:

at least one sensor element, and

at least one electronic component connected electrically to the sensor element, the sensor element and the electronic component being disposed on one common printed circuit board of the sensor device,

wherein the printed circuit board has at least a first rigid board part, a second rigid board part, and a flexible board part, the second rigid board part being joined to the first rigid board part by the flexible board part, the sensor element being disposed on the first rigid board part and the electronic component being disposed on the second rigid board part,

wherein the drive device has an end shield, and the printed circuit board of the sensor device is secured to the end shield,

wherein the printed circuit board includes a connector having a first contact section and a second contact section, the connector being configured for the electrical connection of the sensor device to a control unit, wherein the end shield has at least one axial through-hole, and at least the second contact section of the connector projects through the axial through-hole.

7 . The drive device as recited in claim 6 , wherein the end shield is produced from a metal material, and the printed circuit board is secured to the end shield by use of a support element produced from a plastic material.

8 . The drive device as recited in claim 6 , wherein the end shield is produced from a plastic material, and the printed circuit board is secured directly to the end shield.

9 . The drive device as recited in claim 6 , wherein the first rigid board part is aligned perpendicular to an axis of rotation of the rotor, and the second rigid board part is aligned parallel to the axis of rotation of the rotor.

10 . The drive device as recited in claim 6 , further comprising a plug guide, made of a plastic material, which is disposed on the end shield and radially surrounds the second contact section of the connector at least in some areas.

11 . A pressure generator for a brake system, comprising:

a pump device; and

a drive device configured to actuate the pump device, the drive device including

an electric machine, disposed in a housing and having a rotationally mounted rotor and a sensor device, fixed to the housing, configured to detect a rotational position of the rotor;

wherein the sensor device includes:

at least one sensor element, and

at least one electronic component connected electrically to the sensor element, the sensor element and the electronic component being disposed on one common printed circuit board of the sensor device,

wherein the printed circuit board has at least a first rigid board part, a second rigid board part, and a flexible board part, the second rigid board part being joined to the first rigid board part by the flexible board part, the sensor element being disposed on the first rigid board part and the electronic component being disposed on the second rigid board part,

wherein the printed circuit board has a third rigid board part, and a further flexible board part, the third rigid board part being joined to the second rigid board part by the further flexible board part, and a connection device for the electrical connection of the sensor device to a control unit being disposed on the third rigid board part.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (18)