A framework is disclosed for holding magnets to provide a stator for an electric motor, in particular for a starter motor. The framework is adapted to removably receive, retain and space apart a plurality of magnets within the framework to form a tubular magnet array and provide said stator. The framework may provide a stator which is easier to assemble and more reliable than known stators. The framework provides a central aperture for receiving a rotor armature of said electric motor. The framework is arranged to be slidably inserted or removed from a housing of said electric motor. A frame portion, a stator, an electric motor, a vehicle drive assembly and a method of assembling an electric motor are also described. A brush housing comprising a plurality of passages for slidably retaining brushes and comprising a plurality of bias housings, and a brush assembly comprising the brush housing are also described.

The invention mainly relates to a spiral spring (36) of a brush holder for a motor vehicle starter. The spiral spring includes: a rolled-up portion (37) having a plurality of turns (371); and an arm (39) for engaging one surface of a brush of the brush holder. The invention is characterized in that the spiral spring (36) also comprises a means (42) for reducing the friction between at least two adjacent turns (371) of the rolled-up portion (37).

A method produces a brush for a commutator motor, in particularly for a motor vehicle fan, for electrically contacting a connected contact lead to a commutator via a spring-loaded contact with a commutator. Accordingly, a brush material, particularly carbon dust, is poured into a cuboid matrix and compressed by a plunger in a contact direction for forming the brush.

A brush box (23) for a brush-holder, which is useful as a housing for an electric machine brush (25). The brush box (23) comprises a lower portion (56) for guiding the brush, connected to a mounting (60), and an upper portion (58) for guiding the brush, the lower (56) and upper (58) guiding portions being open on the side of a front surface (35) and a rear surface of the brush (25). The lower (56) and upper (58) guiding portions are separated from one another by a space (61) enabling a braid of the brush (25) to pass through.

A brush box (23) for a brush-holder, which is useful as a housing for an electric machine brush (25). The brush box (23) comprises a lower portion (56) for guiding the brush, connected to a mounting (60), and an upper portion (58) for guiding the brush, the lower (56) and upper (58) guiding portions being open on the side of a front surface (35) and a rear surface of the brush (25). The lower (56) and upper (58) guiding portions are separated from one another by a space (61) enabling a braid of the brush (25) to pass through.

The invention mainly concerns a brush holder (10) for an electric motor, in particular the starter motor of a motor vehicle, comprising guide cages (13) for receiving the brushes (15) and a support plate (12) on which the guide cages (13) are positioned. The guide cages (13) are made from an insulating material. The brush holder (10) comprises legs (29) fixed on the support plate (12), around each of which a spiral spring (24) is intended to be mounted in order to exert a force on the brush (15) in such a way as to press the brush (15) against a collector.

A high-voltage accumulator module having a multiplicity of battery cells arranged in a honeycombed parallel- and series connection assembly (for example, honeycomb). The gaps between the battery cells are filled with a thermally and electrically conductive potting compound. The battery cells are electrically insulated with respect to the potting compound. The potting compound is connected to an energy source via electrically conductive fixing elements that protrude into the potting compound and via two pole connections in such a way that a current flow through the potting compound which is as homogenous as possible is achieved. The two pole connections, for example, in the form of metal plates, may be fastened to the potting compound over a large surface area and in close electrical contact therewith by the fixing elements. The fixing elements may protrude as deep as possible into the potting compound in the form of strips or pins and may contain barbs.

A high-voltage accumulator module having a multiplicity of battery cells arranged in a honeycombed parallel- and series connection assembly (for example, honeycomb). The gaps between the battery cells are filled with a thermally and electrically conductive potting compound. The battery cells are electrically insulated with respect to the potting compound. The potting compound is connected to an energy source via electrically conductive fixing elements that protrude into the potting compound and via two pole connections in such a way that a current flow through the potting compound which is as homogenous as possible is achieved. The two pole connections, for example, in the form of metal plates, may be fastened to the potting compound over a large surface area and in close electrical contact therewith by the fixing elements. The fixing elements may protrude as deep as possible into the potting compound in the form of strips or pins and may contain barbs.

An electric motor includes a rotor including a rotating shaft extending in an axial direction, a commutator attached to the rotating shaft, a brush including a front end surface coming into contact with the commutator and a rear end surface positioned on a side opposite to the front end surface, a constant load spring including a first spiral portion and a second spiral portion each made of a strip-shaped wire material wound in a spiral shape, and including a fixed end on the front end surface side of the brush, and a pressing member coming into contact with the rear end surface of the brush to press the brush against the commutator with a load from the constant load spring.

An electric motor includes a rotor including a rotating shaft extending in an axial direction, a commutator that is attached to the rotating shaft, a brush that comes into contact with the commutator, and a brush spring that presses the brush against the commutator. The brush spring includes a first spiral portion and a second spiral portion, each of the first spiral portion and the second spiral portion being made of a plate material having a strip shape wound in a spiral shape, and a coupling portion that couples a wire material having a strip shape forming the first spiral portion and a wire material having a strip shape forming the second spiral portion, and the brush is pressed against the commutator by a load from the coupling portion.