A motor including: a frame having an outer diameter of 10 millimeters or less and an inner surface; an annular magnet attached to the inner surface of the frame; a bracket provided at the frame; a columnar brush formed of carbon and having an outer peripheral surface; a commutator contacting the outer peripheral surface of the brush; and an elastic member supporting the brush at the bracket, in which a part of the elastic member is inside the brush.

A bus bar engaged with each brush holder and electrically connected to positive brushes. A rotor has coils and protrusions extending in an outward direction and electrically connecting the coils to commutator segments. Each brush portion end surface faces the outward direction, the bus bar has an engagement portion with an end facing the inward direction, and the end of the engagement portion is further in the outward direction than the end surface portion. The brush has an end facing the first direction, the bus bar has an end facing a second direction, and the end of the bus bar is further in the second direction than the end of the brush facing the first direction. Each protrusion end faces the second direction, and the end of the bus bar facing the first direction is further in the second direction than the end of the protrusion facing the second direction.

A voltage regulator with brush holder assembly (100) for a rotary electric machine intended for an automotive vehicle, which assembly comprises: a brush holder comprising brushes that are capable of coming into electrical contact with a rotor of the rotary electric machine in order to apply an excitation signal thereto; a microcontroller for regulating said excitation signal; a body made of electrically insulating material, said body taking the overall shape of a T and in which said brush holder and said microcontroller are housed, characterized in that the voltage regulator with brush holder assembly (100) comprises two parts: a first part (200) forming a central portion of the T-shaped body and extending along a first axis (z1-z2), said first part (200) comprising a housing (201) for accommodating the brush holder and a second part (300) forming a lateral portion of the T-shaped body and extending along a second axis (y1-y2) perpendicular to said first axis (z1-z2), said integrated circuit being housed in said second part (300).

A brush assembly includes a brush holder, a brush, an elastic element, and a conductive terminal. The brush slidably is accommodated in the brush holder. The elastic element is resisted between the brush and the brush holder. And the conductive terminal is formed by bending from the brush holder.

A brush holding assembly for an excited-rotor electric machine includes a casing including two ducts flanking each other and developing along a direction between first and second ends, at least two brushes each housed capable of sliding in a respective duct and projecting outwardly to the second end and a connecting member arranged to connect with an electric current generation unit associated with said casing at the first end. The assembly also includes presser members associated with the brushes and configured to push the brushes towards the second end to keep them pressed on the respective tracks of a rotating manifold of a rotor and at least two conductive elements developing along the direction, each operatively interposed between a respective brush and the connecting member and configured to deform along the direction in order to follow the movement of the brush imparted by the presser members.

Provided is a brush assembly for transferring lightning current between a first structure and a second structure, which brush assembly includes a holder realized for mounting to one of the two structures; a recess formed in the holder, which recess is shaped to accommodate a brush and to expose a first brush face; and a first displacement means arranged to move the first exposed brush face against a surface of the first structure; and wherein the recess is shaped to also expose a second brush face, and the brush assembly further includes a second displacement means arranged to move the second exposed brush face against a surface of the second structure. Further provided is a lightning protection circuit of a wind turbine; and a wind turbine.

A motor includes a frame having an outer diameter of 10 millimeters or less and an inner surface. The motor also includes an annular magnet attached to the inner surface of the frame, a bracket provided at the frame, and a columnar brush formed of carbon and having an outer peripheral surface. In addition, the motor includes a commutator contacting the outer peripheral surface of the brush, and an elastic member supporting the brush at the bracket. A part of the elastic member is disposed inside of the columnar brush.

Provided is a brush arrangement of a wind turbine lightning protection system, realized to provide a current path from a hub to a canopy of the wind turbine, which brush arrangement includes a brush holder arranged to hold a brush in electrical contact with a contact surface at the exterior of the canopy, which contact surface is electrically connected to the hub; a bracket arranged to electrically connect the brush with a mounting plate; characterized by an access opening in the front wall of the canopy, which access opening is dimensioned to accommodate the bracket and brush holder; and a mounting arrangement for securing the mounting plate to the canopy front wall over the access opening, from within the canopy interior. A wind turbine including a lightning protection system with at least one such brush arrangement is also provided.

A motor including: a frame having a width of 10 millimeters or less and an inner surface; an annular magnet attached to the inner surface of the frame; a bracket provided at the frame; a columnar brush formed of carbon and having an outer peripheral surface; a commutator contacting with the outer peripheral surface of the brush; and an elastic member supporting the brush to the bracket, in which at least a part of the elastic member is inside the brush.

A brush holding device may include a brush holder; a plug; a first plug contact element and a second plug contact element; and a first circuit board. The first plug contact element and the second plug contact element may be connected with a brush through a choke coil. The first circuit board may include electric-magnetic interference suppression components connected to a first and second contact area of the first circuit board. The electric-magnetic interference suppression components may be electrically connected to the first contact area and the second contact area, and the electric-magnetic interference suppression components may be directly or indirectly grounded.