Spur gear and its method of fabrication, and brushless electric motor
AssigneeRobert Bosch GmbH
InventorRami Deichelbohrer
Life of this patent
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Abstract
The invention relates to a spur gear (1) for a transmission (35) for a brushless electric motor (10), having a toothed portion (32), with a receiving bore (38) formed in the region of the toothed portion (32) in order to receive a rotor shaft (30), and having a signal generating portion (34) rotationally fixed to the toothed portion (32) with multiple magnetic field generating regions (48), which are adapted to interact with a magnetic field sensing element (50) especially a Hall element, in order to detect the rotary angle position of the spur gear (1) as it turns about an axis of rotation (20).
Claims13
A spur gear (1) for a transmission (35) for a brushless electric motor (10), having a toothed portion (32), with a receiving bore (38) formed in the region of the toothed portion (32) in order to receive a rotor shaft (30), and having a signal generating portion (34) rotationally fixed to the toothed portion (32) with multiple magnetic field generating regions (48), which are adapted to interact with a magnetic field sensing element (50) in order to detect the rotary angle position of the spur gear (1) as the spur gear (1) turns about an axis of rotation (20), wherein the spur gear (1) is formed as a sintered component, and wherein the materials (A, B) of the sintered material for the toothed portion (32) and for the signal generating portion (34) are different.
Dependencies are inferred from the claim text.