An electric circuit providing a ground connection includes at least two brushes and a contact member, wherein each brush and the contact member form a sliding contact, wherein the contact member is connected to a ground potential by at least one of the sliding contacts, wherein at least two of the sliding contacts are connected to a current source adapted to provide a current through the sliding contacts.

An electric circuit providing a ground connection includes at least two brushes and a contact member, wherein each brush and the contact member form a sliding contact, wherein the contact member is connected to a ground potential by at least one of the sliding contacts, wherein at least two of the sliding contacts are connected to a current source adapted to provide a current through the sliding contacts.

A wiper motor including an electrically conductive housing in which a speed reduction mechanism is housed, a motor body housed within a yoke joined to the housing and having a power supply terminal that contacts a commutator so as to supply electric power to a rotor, and having a brush that includes a ground terminal having one end in contact with the commutator and another end connected to an electrically conductive partitioning wall of the housing that covers an opening in the yoke, a power supply line configured to supply electric power to the power supply terminal via a noise-suppression choke coil, a ground line connected to the partitioning wall and to ground, and a capacitor connecting the power supply line with the ground line, such that a noise component flowing through the ground line passes through the choke coil.

An EMI attenuation device includes a housing stator, a fan rotor, and an electrical bridge therebetween. The housing stator has an aperture therethrough, and at least a portion of the housing stator is electrically conductive. The fan rotor is adjacent to the aperture and has a rotational axis relative to the housing stator and a proximate surface proximate the housing stator. The fan rotor is electrically conductive, and the proximate surface is continuous around a rotational direction of the fan rotor. The electrical bridge is between the proximate surface of the fan rotor and a contact surface of the housing stator.

A discharge device for discharging an electrical charge and/or voltage from a rotor of an electric motor via a shaft from a first discharge partner to a second discharge partner, the discharge device including a support body device, wherein the support body device includes a connecting portion for electrical and mechanical connection to one of the discharge partners and expanding portions for expanding the connection of the support body device to the one of the discharge partners, wherein the expanding portions include the connecting portion.

A discharge device for discharging an electrical charge and/or voltage from a rotor of an electric motor via a shaft from a first discharge partner to a second discharge partner, the discharge device including a support body device, wherein the support body device includes a connecting portion for electrical and mechanical connection to one of the discharge partners and expanding portions for expanding the connection of the support body device to the one of the discharge partners, wherein the expanding portions include the connecting portion.

A grounding apparatus for an electrical drive assembly configured for conducting an electrical charge and/or voltage from a rotor of an electric motor via a shaft as a first grounding partner to a second grounding partner. The grounding apparatus has: a supporting body device with a connecting section for electrical and mechanical connection to one of the grounding partners, and a supporting section; a contacting device having a contacting section for electrical connection to the other of the grounding partners, the contacting device having an attachment section and being connected to the supporting section of the supporting body device via the attachment section. The grounding apparatus bridges an annular gap between one grounding partner and the other, and the grounding apparatus has at least one opening which forms or helps to form an air passage in the annular gap in an axial direction.

A grounding apparatus for an electrical drive assembly configured for conducting an electrical charge and/or voltage from a rotor of an electric motor via a shaft as a first grounding partner to a second grounding partner. The grounding apparatus has: a supporting body device with a connecting section for electrical and mechanical connection to one of the grounding partners, and a supporting section; a contacting device having a contacting section for electrical connection to the other of the grounding partners, the contacting device having an attachment section and being connected to the supporting section of the supporting body device via the attachment section. The grounding apparatus bridges an annular gap between one grounding partner and the other, and the grounding apparatus has at least one opening which forms or helps to form an air passage in the annular gap in an axial direction.

A first connector, a second connector and an electrical connector assembly having the first connector and the second connector are provided. The first connector includes an insulating housing and a locking plate embedded in the insulating housing, and a plurality of first power terminals, a plurality of first signal terminals and a plurality of first braking terminals mounted in the insulating housing; the locking plate is provided with a locking mechanism protruding upwardly. The second connector includes a terminal block, a cover body covering the terminal block, a locking slidable cover slidably mounted on the cover body and a plurality of second power terminals, a plurality of second signal terminals and a plurality of second braking terminals mounted in the terminal block. The locking slidable cover is capable of sliding forwardly and rearwardly relative to the cover body, and is capable of being locked together with the locking mechanism. It is adapted to a servo motor, saves space and is easy to assemble.

A first connector, a second connector and an electrical connector assembly having the first connector and the second connector are provided. The first connector includes an insulating housing and a locking plate embedded in the insulating housing, and a plurality of first power terminals, a plurality of first signal terminals and a plurality of first braking terminals mounted in the insulating housing; the locking plate is provided with a locking mechanism protruding upwardly. The second connector includes a terminal block, a cover body covering the terminal block, a locking slidable cover slidably mounted on the cover body and a plurality of second power terminals, a plurality of second signal terminals and a plurality of second braking terminals mounted in the terminal block. The locking slidable cover is capable of sliding forwardly and rearwardly relative to the cover body, and is capable of being locked together with the locking mechanism. It is adapted to a servo motor, saves space and is easy to assemble.