The invention relates to a method of adjusting a brush holder (41) of a slip ring and brush assembly comprising at least one slip ring (50) with a radius of curvature R. With the method a test tool (80) is used to simulate a brush in the brush holder with the important difference that the test tool is able to indicate to the operator whether full contact between the slip ring and the contact surface of the test tool is obtained.

The brush-holder regulator comprises a casing made from an insulating material suitable for being mounted on a rear bearing of an alternator and forming a one-piece assembly with at least one housing suitable for containing brushes allowing an electrical connection to be established with an excitation winding of a rotor of the alternator, an electronic control component (22) connected electrically to a trace circuit (21) overmoulded in the casing, and a cooling radiator (24) for the control component. According to the invention, the control component comprises a back electrode (225) on which the radiator (24) is mounted, the back electrode (225) and the radiator (24) being in electrical and thermal contact and rigidly attached to a portion (216) of the trace circuit.

Two or more switching devices (36) and two or more lead frames (41, 42, 43, and 44) are integrally molded by use of a molding resin (37) so that a power module (30) is formed; the power module (30) is made to adhere to a heat sink (32) via an insulating material (31); the power module (30) and the heat sink (32) are fixed to a housing (33) of the power module composite (23); the power module composite (23) is fixed to a case (6) of an electric rotating machine (1) via the housing (33).

An electric motor, in particular a separately excited synchronous motor, comprises a rotor shaft with at least one slip ring and at least one electrically conductive contact element, in particular a carbon brush, which bears against the slip ring and is accommodated in a channel-like guide formed in a housing and extending radially with respect to the rotor shaft and which carbon brush is radially tensioned against the slip ring by means of a spring element, wherein a roller is provided which is tensioned laterally against the contact element via a further spring element and via which the contact element is tensioned against a wall of the guide.

In the rotating electrical machine with integrated control device provided with the drive unit and the inverter assembly, the brush holder that holds the brush is detachably attached to either the rear bracket side of the inverter assembly or the inverter assembly side of the rear bracket so that it is not necessary to provide a hole for incorporating the brush holder in the central part of the control module, and the radial dimension of the control module can be reduced.

A brush assembly (100) for a slip ring assembly of a rotating electrical machine, having at a brush holder (120) defining a cage into which a brush (103) slides; and a rod (101) extending along a second axis (D2) parallel to the first axis, for supporting the brush holder. One of the rod and the brush holder defines a recess (121), the other has a portion sized to be received into the recess the mating portion (105), the recess defined by a first wall (123, 124) disposed for abutment against the mating portion when, the mating portion received in the recess, the brush holder is driven longitudinally along the rod parallel to the second axis. The recess is defined by a second wall (122) disposed for abutment against mating portion when, the mating portion received in the recess, the brush holder is driven tangentially around the second axis.

A brush holder for electrical machines has a clamping piece with a first mounting part and a second clamping part, which when assembled define a clamping hole to be assembled around a spindle; and two brush holder arms pivotally mounted on the first mounting part of said clamping piece, and adapted to receive and retain a brush. The arms have an upper side which is opposite to a lower side facing a slip ring; at least one biasing spring to act upon said brush holder arms in such a way that said brush holder arms move pivotally towards and presses said brushes against the slip ring. A conductive wire connects the brush to the clamping piece. A brush holder arm locking mechanism is adapted to be inserted into a slot in the second clamping part. A brush locking pin retains the brush in said brush holder arm and provided in corresponding bores arranged in the brush holder arm and the brush. The brush locking pin has a pipe portion and a spring portion arranged inside the pipe and that protrudes from a slot in a wall of said pipe. The mounting part of said clamping piece is provided with a brush arm stop to limit a pivot movement of the brush holder arm towards a slip ring.

A brush holder for slipring brushes comprises a brush mount held by a lever at a base. The lever is connected by a base pivot to the base and is pivotable in a plane orthogonal to a brush mount pivot axis and/or to a slipring rotation axis. A spring is provided between the base and the lever. The brush mount is connected to the lever by a brush mount pivot pivotable in said plane. The brush mount holds a first brush and a second brush wherein the brush mount pivot is between the first brush and the second brush.

This machine includes: a rotor; sliprings that are placed on an outer circumferential surface of an end portion of a shaft located on one end side thereof and projecting from the rotor; a brush assembly that has a cylindrical shape with an open end located near a head of the shaft, to thereby surround the sliprings; and brushes that penetrate in the brush assembly toward the sliprings from their radially outer sides and make contact with the sliprings, for supplying a current to the sliprings; wherein, on an inner circumferential surface of the brush assembly near the open end, a first wall that extends in a circumferential direction and a second wall that forms, between it and the first wall, a flow passage that leads in the circumferential direction from a region corresponding to a penetrating region of the brush, to an outside thereof, are formed.

A brush assembly (100) for a slip ring assembly of a rotating electrical machine, having at a brush holder (120) defining a cage into which a brush (103) slides; and a rod (101) extending along a second axis (D2) parallel to the first axis, for supporting the brush holder. One of the rod and the brush holder defines a recess (121), the other has a portion sized to be received into the recess the mating portion (105), the recess defined by a first wall (123, 124) disposed for abutment against the mating portion when, the mating portion received in the recess, the brush holder is driven longitudinally along the rod parallel to the second axis. The recess is defined by a second wall (122) disposed for abutment against mating portion when, the mating portion received in the recess, the brush holder is driven tangentially around the second axis.