摘要:
Die Erfindung betrifft einen Federkontakt für einen Schleifkontakt mit einem Anschlussbereich (24) und zumindest einem Kontaktbereich umfassend ein gestrecktes Federelement und ein Edelmetall, wobei der Federkontakt einen leitenden Federträger (1, 11, 21, 31) und zumindest ein Kontaktstück (2, 12, 22, 32) umfasst, wobei der Federträger (1, 11, 21, 31) eine im wesentlichen symmetrische bereichsweise Steifigkeit in einer Ebene senkrecht zur gestreckten Ausdehnung des Federträgers (1, 11, 21, 31) aufweist und aus einem leitenden, im wesentlichen edelmetallfreien Material gefertigt ist. Es ist erfindungsgemäß vorgesehen, dass der Federträger (1, 11,21,31) eine tordierte Blattfeder ist, die in der Ebene senkrecht zur Torsionsachse eine symmetrische Steifigkeit bezogen auf zumindest einen Bereich der tordierten Blattfeder hat.
摘要:
A slipring brush comprises a body of a metal wire or metal band having a contact area for contacting a slipring module. The contact area is selectively coated by a contact material like gold or silver or an alloy thereof. The body preferably comprises Copper, Nickel or Iron or an alloy thereof. Coating may be done by electroplating, physical vapor deposition (PVD) or chemical vapor deposition (CVD).
摘要:
Die Erfindung betrifft eine Kohlebürste (10, 20) zur Übertragung hoher Ströme mit einem Anschlussteil (12) zum Anschluss eines elektrischen Leiters (19) und einem sich verbrauchenden Kontaktteil (11) mit einer zur Anlage an eine Kommutatoreinrichtung ausgebildeten Kontaktfläche (16), wobei der Anschlussteil und der Kontaktteil in einer quer zur Abnutzungsrichtung der Kohlebürste orientierten Schichtübergangzone (13) ineinander übergehend ausgebildet sind und einen einstückigen Formkörpcr bilden, wobei der Anschlussteil und der Kontaktteil unterschiedliche Zusammensetzungen aufweisen, derart, dass ein Kohlenstoffanteil des Kontaktteils größer ist als der Kohlenstoffanteil des Anschlussteils und der Kontaktteil einen vom Anschlussteil abweichenden Metallanteil aufweist.
摘要:
The invention relates to a sliding contact piece for transmitting an electrical current with a density of between 15 A/cm and 50 A/cm , said element comprising copper particles and graphoid particles produced by grinding a mixture of graphite particles, preferably natural graphite, and organic binding agents. Said contact piece is characterised in that, in order to transmit the current for at least 2000 hours at a temperature higher than 100 DEG C, typically around 150 DEG C, the contact piece contains between 20 and 60 wt. % of copper particles and also particles comprising an additional metal pertaining to the group consisting of zinc, manganese and tin, in the form of metal or a compound of said metal.
摘要:
The invention relates to a resin bonded graphite material which is especially suitable for use as an electric contact. The invention also relates to a method for the production of a resin bonded graphite material especially for use as an electric contact material. The invention further relates to the use of a resin bonded graphite material. The aim of the invention is to develop a corresponding resin bonded graphite material in such a way that interference is excluded or almost excluded when used as an electric contact. According to the invention, the resin bonded graphite material is made of a hardened mixture of electrographite containing carbon black, the carbon black content RG being >/=30 wt. %, electrographite devoid of carbon black and a bonding agent and a specific electric resistor Wspez being >/= 3.500 mu omega m.
摘要:
A metal-graphite brush (1) for supplying electricity to a coil (17) wound around a core (9) provided at a rotor (2) of a motor (10) includes a sintered material (22) having pores (19) at a surface of the sintered material and in the sintered material. The surface of the sintered material serves as a sliding surface (32) sliding along a sliding surface of a commutator (8) to which the coil is electrically connected for supplying electricity. The metal-graphite brush further includes an emulsion (34) containing a liquid (35), which vaporizes corresponding to a temperature rise of the sliding surface while the sliding surface is sliding along the sliding surface of the commutator during an operation of the motor, and a solvent, which has a boiling point higher than that of the liquid, and into which the liquid is dispersed as liquid particles, in the pores.
摘要:
An element for making an electric contact to a contact member (5, 15, 19, 41) for enabling an electric current to flow between said element and said contact member, said element (3,14, 42) comprising a body (6) having at least a contact surface (2, 4, 16, 43, 44) thereof coated with a contact layer applied against said contact member. The contact layer comprises a film comprising a multielement material with equal or similar composition as any of a layered carbide or nitride that can be described as Mn+1AXn,, where M is a transition metal or a combina tion of a transition metals, n is 1, 2, 3 or higher, A is an group A element or a combination of a group A element, element and X is Carbon, Nitrogen or both.
摘要:
The invention relates to a sliding electrical contact part comprising a base of carbonaceous material and copper. The invention is characterised in that the part is lead free and contains zinc and iron-based particles having a size of less than 500 µm. The inventive contact parts are particularly suitable for electrical devices which require high current densities and friction velocities, such as motor vehicle starters with a high power-weight ratio.