456results about "Brushes manufacture" patented technology

A contact connector is provided that has at least one loading fiber and a plurality of conductors. Each conductor may have at least one contact point. Each conductor may contact a single loading fiber, and each loading fiber may be capable of delivering a contact force at each contact point. In one example, the connector may be a power connector having a power circuit and a return circuit. In another example, the connector may be a data connector having at least one signal path.

A conductive fiber brush including a brush stock composed of plural conductive fibers or strands of fibers at least some of which may have plural bends along the length of the fibers or strands. The fibers may have a diameter less than 0.2 mm and are arranged in contacting engagement with each other with the touching points among the fibers or strands maintaining elastic tension between the fibers or strands and thereby maintaining voids between the fibers or strands to produce a packing fraction between 1 and 50% and in extreme cases up to 70% but generally between 10-20% depending on the various factors, including the materials used, the current densities to be conducted, and the sliding speeds under operation. The plural bends are implemented by producing fibers or strands having a regular or irregular spiral, wavy, saw-tooth, triangular, and / or rectangular pattern, or other undulating pattern. Optionally, the voids in brush stock may be partially filled with a strengthening, lubricating, abrasive, and / or polishing material, and may be wrapped in an outer sheath, slid into a casing, or provided with an other covering of all or part of the area of the brush stock, be infiltrated or sprayed at the surface with some material, have an increased packing fraction at the surface and / or have some or all of the touching points between the fibers or strands soldered, welded or otherwise thermally joined. Optionally also, the friction among the fibers may be reduced through light lubrication applied by rinsing the brush or brush stock in a lubricant. In one embodiment, the fiber brush is employed in a brush loading device having a hydrostatically controlled brush holder wherein the force exerted on the brush is controlled by a metallic or other conductive hydrostatic fluid which at the same time conducts the current to the brush.

The invention discloses a process for producing low-noise and high-performance electric brushes by using substitutional copper-coated graphite powder, and the process comprises the following steps: 1) kneading graphite powder and a bonding agent together so as to obtain colloidal graphite powder; 2) mixing the colloidal graphite powder, additives and a release agent so as to obtain mixed powder; 3) adding methanol or a gasoline low-carbon-residue binder dilute-solution in the mixed powder, mixing and then adding copper coated graphite powder into the obtained mixture; and 4) airing the material powder mixed in the step 3), pressing the material powder, and finally, sintering the material powder, thereby obtaining a low-noise and high-performance electric brush. According to the process disclosed by the invention, through adopting chemical substitutional copper coated graphite powder which can be industrialized as raw materials, and overcoming the defects that a chemical substitutional copper coated graphite powder coating is loose, porous and poor in binding force, and in the process of application, a copper plating layer is easy to fall off, a low-noise and high-performance electric brush is prepared. According to the process, a product can be obtained just through one-step molding and low-temperature heat treatment, therefore, the process is simple in working procedure, low in energy consumption, high in efficiency and short in production cycle, and the cost of the process is lower than that of a process implemented by using electrographite.

An electrical connector that has an array of conductors each having a contact point to make contact with a mating conductive surface. Upon engaging the contact points in a sliding manner with the mating surface, the conductors are displaced, which, in turn, tensions a loading fiber within the connector. Tensioning of the loading fiber provides a contact force between the contact points and the mating surface.

An electric brush for ABS (Anti-skid Brake System) comprises a brush body and a lead-out wire, wherein the brush body comprises 46 to 52 parts by weight of superfine electrolytic copper powder, 52 to 46 parts by weight of cementing powder and 2 parts by weight of modifier at; the cementing powder comprises 1.0 to 3.0 parts of high-purity carbon fiber powder, 23 to 27 parts of artificial graphite powder, 25 to 35 parts of high-purity sub-nanometer graphite powder, 18 to 22 parts of crystal graphite powder, 3 to 8 parts of graphitized carbon black powder, 2.5 to 4.5 parts of rare-earth tungsten disulfide composites and 5 to 15 parts of high-temperature resistant phenolic resin; and the modifier comprises 0.20 to 1.30 parts of vulcanization silver powder, 0.20 to 1.5 parts of stibonium powder and 0.5 to 1.5 parts of zinc powder. The chemical stability, the lubricating property, the electrical conductivity, the high-temperature resistance and the abrasion resistance of the electric brush provided by the invention are much better than that of the existing products.

The present invention relates to an electric sliding connect terminal such as carbon brushes, which is provides with a base body prepared with artificial graphite materials and by processes such as pressing, heat treatment and subsequent processing when necessary. The base body(10)of the sliding connect terminal is processed with laser for realizing a process with a high precision by a simple measure.

The invention discloses a carbon brush. The carbon brush is characterized by comprising the following constituents in percentage by weight: 80-90% of graphite powder, 10-15% of resin and 1-8% of asphalt. The copper plating technology is characterized by comprising the following steps of: mixing the constituents of the carbon brush in a mixer, and drying; then, smashing the mixture, screening, carrying out compression moulding on a press by a die, sintering, grinding the surface after sintering; and then, placing the grinded workpiece in a copper plating container for executing the copper plating reaction, and after the copper plating reaction, making the needed carbon brush by punching, wire embedding and arc grinding. The carbon brush and the copper plating technology have the advantages that the technological conditions are simple and easy to realize, the carbon brush is convenient to produce, the production cost is lowered, the working efficiency is improved, the service life is prolonged, and the carbon brush can be used for high-power electric tools or dust collector equipment.

The present invention provided a metal graphite brush in which any spark discharge is hardly produced. A metal graphite brush 1 is made up of a sintered body having pores 19 on its surface and interior, and feeds a coil 17 in such a manner that the coil 17, wound around a core 9 provided on a rotor 2 of a motor, comes slidably into contact with an electrically connected commutator8 at a slidably contacting surface. Emulsion containing liquid that is vaporized in response to temperature rise due to contacting with the commutator 8 when a motor is operating, and solvent having a higher boiling point than that of liquid as well as causing the liquid to disperse is included within the pore 19.

Electric motor components are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin host. The percentage by weight of the conductive powder(s), conductive fiber(s), or a combination thereof is between about 20% and 50% of the weight of the conductive loaded resin-based material. The micron conductive powders are metals or conductive non-metals or metal plated non-metals. The micron conductive fibers may be metal fiber or metal plated fiber. Further, the metal plated fiber may be formed by plating metal onto a metal fiber or by plating metal onto a non-metal fiber. Any platable fiber may be used as the core for a non-metal fiber. Superconductor metals may also be used as micron conductive fibers and / or as metal plating onto fibers in the present invention.

The invention discloses a manufacturing method of an electric brush. The manufacturing method includes the steps that raw materials are selected and smashed into powder according to the ratio, and prepressing is carried out on the powder to form a prefabricated part with S-shaped grooves and transverse grooves; the prefabricated part is pressed again to obtain a preliminary processed product, wherein multiple S-shaped through holes are formed in the preliminary processed product, and transverse holes are communicated between the through holes; burrs on the surface of the preliminary processed product are ground off, then the preliminary processed product is sintered in a high-temperature and high-pressure environment, dipped and cooled after sintering, after cooling, filler prepared by mixing expanded graphite, iodine, binder and lubricant is injected into the S-shaped through holes and the transverse holes, and a finished product is obtained through compaction. Compared with the prior art, the manufactured electric brush reduces noise and heat productivity and increases heat dissipating channels in the operation process.

A slip ring assembly for allowing electrical or electronic signal transfer between a stationary device and a rotating device includes a ring assembly and a brush assembly. The ring assembly comprises a plurality of assembled rings and spacers of selected widths positioned on a longitudinal tube having a slot and a hollow center. The tube may be provided with one or more bearings to allow the tube to be smoothly rotatable in a housing. A plurality of brushes unitarily formed with a plurality of connector pins are held by a brush holder which is removably received in the housing. The connector pins are configured to receive a standard male or female connector. The housing is typically incorporated into a body of a stationary device, and the tube may be attached to or incorporated into a rotating component of an electronic or electrical device.