Abstract:
A slip ring unit for an electrically excited rotor of a rotary dynamo-electric machine includes an electrical terminal which protrudes axially from an end face of the slip ring unit and having a contact point and a circumferential slip contact surface electrically connected to the electrical terminal. Disposed adjacent to the slip contact surface is an insulation element, with end plates axially retaining the circumferential slip contact surface and the insulation element. An electrically insulated support element is arranged on an end face of the slip ring unit and has a cross section which substantially matches a cross section of the slip ring unit. The support element axially surrounds the electrical terminal and radially supports the electrical terminal.
Abstract:
Provided is a slip ring device for a rotating electric machine, which is capable of reliably retaining a long lead while preventing movement and deformation of the long lead during insert molding. The slip ring device for a rotating electric machine includes: a first ring and a second ring; a long lead (12) having one end portion connected to the first ring and another end portion connected to a rotor coil; a short lead having one end portion connected to the second ring and another end portion connected to the rotor coil; and a molded body formed by insert molding, for retaining the first ring, the second ring, the long lead (12), and the short lead in a mutually insulated fashion. The molded body includes a restricting member (15) for restricting the long lead (12) from being moved and deformed during the insert molding.
Abstract:
There is provided a slip ring device in which three ring members through are provided so as to be lined up in sequence along an axial line of an input shaft and brushes contact with the ring members respectively, three inner bus bars are provided and are supported by a sleeve portion of the input shaft, and contacting groove portions are provided so as to dent in the radially outwards direction into the inner circumferential surfaces of the ring members and extend along the axial line direction, with one end portions of the inner bus bars being set into these contacting groove portions respectively.
Abstract:
Systems, methods, and apparatus associated for lifting brushes and shorting slip rings are provided. One embodiment may include a shaft in operable communication with a WRIM rotor; multiple slip rings positioned radially around the shaft and in electrical communication with rotor windings of the WRIM; multiple brushes adapted for selective contact with a respective one of the plurality of slip rings. In addition, the system may include multiple selectively activating electrical contacts in electrical communication with respective terminals of the rotor windings of the WRIM; and an actuating mechanism in operable communication with the brushes and the electrical contacts. When the actuating mechanism is actuated, the electrical contacts create electrical shorts between the slip rings and the rotor windings of the WRIM and the plurality of brushes are lifted from contacting the plurality of slip rings.
Abstract:
A device for transferring electric currents that includes a slip ring unit that has a rotor with connecting wires and a stator and a printed circuit board fastened to the rotor, wherein the printed circuit board includes connectors in electrical contact with the connecting wires, wherein a torque required for rotary movement between the rotor and the stator is introduced via the printed circuit board.
Abstract:
A connecting element for a wire end, especially where the wire is a motor vehicle alternator winding, the connector then connecting the wire to slip rings, is formed with a channel for receiving the wire end, this channel being defined between two lugs in facing relationship with each other and joined together through a connecting portion which constitutes the base of the channel. The lugs are bent towards each other so as to grip the wire end. At least one of the lugs has a slot arranged at the level of at least one lateral edge and close to the connecting portion. A portion of the wire end which is bent through about 180.degree. is received in the slot, this bent portion of the wire joining a first portion of the wire end, which extends into the channel, to a second portion of the wire end which extends outside the channel. A separate slip ring unit having such connecting elements, for fitting on an alternator shaft, is also disclosed.
Abstract:
A slip ring assembly having a slip ring holder made of a composite dielectric material reinforced by layers of fabric is molded in one case with the slip rings positioned in the mold and in a second case grooves are machined in the holder for receiving the slip rings. The holder has at least one annular flange for mounting the assembly on a rotating part such as a spinner bulkhead of an aircraft propeller assembly. Slip rings are adhered to the composite material of the holder as a result of molding or use of an adhesive where the grooves are machined in the holder. Metallic wire connections can be fastened to the slip rings by welding which also serve to hold the slip rings in the grooves of the holder. The wire connections may have pins for receiving mating receptacles. Openings in the ends of the metallic wire connections are suitable for crimping wire connectors to the de-icers or de-icer terminals.
Abstract:
A CONSTRUCTION FOR ATTACHING AN ELECTRICALLY CONDUCTIVE RING MEMBER, SUCH AS A DYNAMOELECTRIC MACHINE COLLECTOR RING, TO A SHAFT WHICH IS SURROUNDED BY A PROTECTED INSULATING SHEATH. RADIALLY EXPANDIBLE MEMBERS BETWEEN THE RING AND THE SHEATH SERVE TO TIGHTEN THE RING AGAINST A LOAD-DISTRIBUTING INTERMEDIATE SLEEVE WHICH SURROUNDS THE PROTECTED INSULATED SHEATH.