Shielding structure for a drive device, pressure generator for a brake system
AssigneeRobert Bosch GmbH
InventorBenjamin Haufe
Life of this patent
Estimating the term…
Abstract
A drive device. The drive device includes an electric machine arranged in a housing, a rotor of the electric machine being arranged on a drive shaft for conjoint rotation therewith, the drive shaft being rotatably mounted in the housing, and including a sensor unit that is configured to sense a rotary position of the rotor, the sensor unit being provided with a circuit board having at least one sensor element, and the circuit board being in the form of an annular disk and being arranged coaxially to an axis of rotation of the drive shaft. The circuit board is arranged in the housing, and the drive device includes a shielding sheet which radially surrounds at least some parts of the circuit board.
Claims10
A drive device, comprising:
- an electric machine arranged in a housing, a rotor of the electric machine being arranged on a drive shaft for conjoint rotation with the drive shaft, the drive shaft being rotatably mounted in the housing;
- a sensor unit configured to sense a rotary position of the rotor, the sensor unit including a circuit board having at least one sensor element, and the circuit board being in the form of an annular disk and being arranged coaxially to an axis of rotation of the drive shaft, wherein the circuit board is arranged in the housing;
- a shielding sheet which radially surrounds at least some parts of the circuit board;
- and
- a carrier element that is fastened to the housing and carries the circuit board, the carrier element having the shielding sheet, wherein the carrier element has a main body made of plastics material, and the shielding sheet is electrically separated from the circuit board by the main body.
A drive device, comprising:
- an electric machine arranged in a housing, a rotor of the electric machine being arranged on a drive shaft for conjoint rotation with the drive shaft, the drive shaft being rotatably mounted in the housing;
- a sensor unit configured to sense a rotary position of the rotor, the sensor unit including a circuit board having at least one sensor element, and the circuit board being in the form of an annular disk and being arranged coaxially to an axis of rotation of the drive shaft, wherein the circuit board is arranged in the housing;
- a shielding sheet which radially surrounds at least some parts of the circuit board;
- and
- a carrier element that is fastened to the housing and carries the circuit board, the carrier element having the shielding sheet, wherein the carrier element is fastened to the housing by the shielding sheet.
A pressure generator for a brake system, comprising:
- a pump device;
- a drive device configured to actuate the pump device;
- and
- a control unit configured to controlling the drive device;
- wherein the drive device includes:
- an electric machine arranged in a housing, a rotor of the electric machine being arranged on a drive shaft for conjoint rotation with the drive shaft, the drive shaft being rotatably mounted in the housing,
- a sensor unit configured to sense a rotary position of the rotor, the sensor unit including a circuit board having at least one sensor element, and the circuit board being in the form of an annular disk and being arranged coaxially to an axis of rotation of the drive shaft, wherein the circuit board is arranged in the housing,
- a shielding sheet which radially surrounds at least some parts of the circuit board, and
- a carrier element that is fastened to the housing and carries the circuit board, the carrier element having the shielding sheet, wherein the carrier element has a main body made of plastics material, and the shielding sheet is electrically separated from the circuit board by the main body.
Dependencies are inferred from the claim text.