Patent ID: 11913975
Assignee: MERSEN FRANCE AMIENS SAS
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G

Claim 0:
1. Current sensor device for monitoring the current passing through a brush, comprising:
a brush holder extending in a longitudinal direction between distal and proximal ends, and defining a through housing intended to receive, slidably in the longitudinal direction, a brush so that one end of the brush intended to brush against a rotating movable surface protrudes from the brush holder at its distal end,
a Hall effect sensor arranged to detect a magnetic field,
a concentrator arranged to concentrate the magnetic fields inside a concentrated magnetic field zone and to protect this zone from the external magnetic fields, wherein
the concentrator is mounted on the brush holder so as to surround at least a part of the brush when the latter is received inside the housing of the brush holder, in particular in a plane perpendicular to the longitudinal direction,
the Hall effect sensor is mounted on the brush holder at a position located inside the concentrated magnetic field zone, so as to measure a value representative of the intensity of the current passing through the brush when the latter is received in the housing of the brush holder.