453results about "Brushes manufacture" patented technology

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 leg 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 relates to an ultra-abrasion resistant multifunctional nano carbon brush which comprises the following components in parts by weight: 40-60 parts of copper powder and 60-40 parts of cementing graphite powder. The cementing graphite powder comprises the following components in parts by weight: 0.7-1.5 parts of nano silicon oxide, 8.0 parts of subnano graphite powder, 70.5-71.3 parts of flake graphite powder and 45 parts of phenolic resin solution with concentration of 45 percent. The invention has the advantages that the abrasion resistance of the carbon brush is obviously reinforced, and the service life of a single carbon brush reaches 920 hours; and the working contact surface is stably run, the reversing performance is excellent and the spark is tiny, the noise is greatlylowered and the start power is improved by more than 30 percent. The overlong service life is realized by adding the nano silicon oxide; the low noise and the favorable reversing performance are realized by adding the subnano graphite powder; and the favorable conductive performance is realized by adding the copper powder.

The invention discloses a motor brush for small household appliances and a preparation method thereof. The brush uses natural crystal graphite, artificial graphite, copper powder and carbon black as the main material of the brush, and is equipped with lubricants, additives, adhesives, etc. The agent is made by mixing, molding and roasting. The invention is suitable for small household electrical appliances such as soybean milk machines, juicers, shavers, hair dryers, and small irons. The motor brush for small household electrical appliances of the present invention adopts special raw materials and proportions, and has the advantages of low resistivity, good commutation performance, low running noise, excellent wear resistance, long service life, and environmental protection. Its manufacturing process is simple, Easy to implement, stable product performance and high yield.

The invention discloses an electric brush for an electric tool motor and a preparation method thereof. Electric brush mixture is roasted and then compressed to form the electric brush. The electric brush mixture comprises, part by weight, 30-60 parts of natural graphite, 25-40 parts of binder, 10-15 parts of amorphous carbon, 10-25 parts of solvent and 4-8 parts of additive. According to the electric brush for the electric tool motor and the preparation method thereof, preparation technologies are simple, operation is easy, the electric brush is low in resistivity, good in abrasion resistance, good in reversing performance, strong in anti-interference capability and long in service life, various requirements of the electric tool motor for the electric brush can be met better, and application ranges are wide.

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 carbon brush for a truck starting motor as well as a manufacture method and application thereof. The carbon brush at least contains carbon as one component of a carbon brush main body, the carbon brush main body comprises graphite powder, electrolytic copper powder, a solid lubricating agent and a binding agent, and the carbon brush contains phosphoric acid and is of a double-layer pressing structure. In the carbon brush for the truck starting motor, a definite quantity of phosphoric acid is added when gel powder is prepared, which is beneficial to the formation of a uniform lubricating film on the surface of a motor commutator; and through the self-lubricating action of the lubricating film, the service life of the electric brush can be prolonged. The double-layer pressing structure is adopted, and two layers contain different copper quantities, high conductivity of the carbon brush is ensured through conductivity of the high-copper-content layer; and the sparks of the carbon brush during working are reduced through the low-copper-content layer, and the service life of the carbon brush is ensured through wear resistance of the low-copper-content layer.

The invention discloses a method for manufacturing an electric brush used for an industrial motor. In the method, a main material is formed by proportioning 52 kilograms of copper powder, 5 kilograms of tungsten disulfide, 2 kilograms of surfactant oleic acid, 41 kilograms of rubber powder, 15 kilograms of phenolic resin, 5 kilograms of epoxy resin and 80 kilograms of industrial alcohol. The invention also discloses a preparation process for the electric brush used for the industrial motor. The method has the advantages of high abrasion resistance, prolonged service lives of the electric brush and a motor slip ring and the like.

The invention relates to the field of carbon brush technology, in particular to a carbon brush used for a low-abrasion motor and mixed with nanocopper and a preparation method thereof. In the carbon brush, middle-temperature coal tar pitch, conductive silica gel and epoxy resin are mixed and used as a bonding agent. The composite bonding agent has higher comprehensive performance and electrical conducting performance, and is anti-abrasion and not liable to crack. Via the mixed nanocopper, oxidized grapheme and nanocarbon sol, electrical conductivity of materials is effectively improved, frictional coefficient is reduced, and flexibility of materials is improved. The prepared carbon brush has high electrical conducting performance, is low in abrasion rate, operates stably, generates low noise and small sparks, has stable size, and will not damage a rotator and a stator.

The invention discloses a self-homogeneity wearproof resin type carbon brush and a preparation method thereof. The carbon brush comprises the following components: 5wt%-30wt% of sulphonated and oxidized graphene, 20wt%-65wt% of scale graphite powder and isopressing graphite powder (one or mixture of the two), 30wt%-50wt% of thermosetting resin and an additive. The self-homogeneity wearproof resin type carbon brush has the characteristics of self homogeneity and high wear resistance, is applicable to a motor for a high-power electric tool, in particular to a motor for a high-power cutter. Compared to an existing carbon brush with the same type, the carbon brush is excellent in homogeneity and wear resistance, and the commutation spark is stabilized at the level defined in the specification; The current-carrying wear rate of the carbon brush is 1/5-1/2 of that of the motor for the conventional high-power electric tool with the same type.

The invention discloses a vacuum cleaner high-speed high-efficiency motor brush preparation method and a brush prepared by the method. Constituent materials of the motor brush belong to the field of material science. The brush preparation method comprises, to begin with, mixing graphite, petroleum coke, additive, binders and curing agents uniformly under an ambient temperature condition, smashing the mixture and then, placing the smashed mixture into a die; carrying out compression moulding; and then, carrying out curing processing, cutting, grinding machine, hole drilling and line filling. The vacuum cleaner high-speed high-efficiency motor brush prepared by the method is low in resistance in the using process, good in commutating performance and long in service life, and more importantly, has high wear resistance, low spark grade and good product stability.

The invention discloses a production method of a conductive anti-friction material of an electric brush, relating to the technical field of motor production and also relating to the technical field of new materials. The production method comprises the following steps of: mixing COPNA (Condensed Polynuclear Aromatic) resin, graphite powder and artificially synthesized Delanium graphite; then kneading, grinding, briquetting and sintering; and finally finely grinding to prepare the conductive anti-friction material of the electric brush. The method provided by the invention can be used for providing a conductive anti-friction material of an SJ905 electric brush, which has the advantages of effective reduction of running abrasion, low noise, small sparks and good anti-interference performance.

The invention relates to a series-excitation AC (Alternating Current) motor brush for a soybean milk maker/a juice extractor. The series-excitation AC motor brush is characterized by comprising the following components of: natural crystal graphite, electrochemical graphite, carbon black, polytetrafluoroethylene, graphite fluoride, table salt and asphalt. The series-excitation AC motor brush disclosed by the invention has the advantages of high resistivity, good reversing performance, small sparkles during operation, good sliding contact characteristic, high mechanical strength, good abrasion performance, long service life and the like; and the series-excitation AC motor brush makes a bonder fully be cracked and makes a broken chain of an organic annular structure of the bonder form an organization structure of inorganic carbon when the bonder is roasted at the temperature of 600-700 DEG C, thus the series-excitation AC motor brush is safe and reliable.

The invention discloses a graphite brush, which comprises graphite, resin, carbon nano tubes which are mixed in the graphite and the resin, and a copper wire. The invention also provides a method forpreparing the graphite brush, which comprises the following steps of: performing surface treatment on the carbon nano tubes; adding the carbon nano tubes into solvent for pre-dispersion; slowly addingthe carbon nano tube suspension into resin solution for dispersion; mixing the resin solution containing the carbon nano tubes with the graphite and an additive; cold pressing and sintering the mixture to prepare a blank; and fixedly connecting a lead in the solidified and sintered blank to prepare the brush. Due to the fact that the carbon nano tubes are added in the graphite brush, the graphitebrush of the invention has high thermal conductivity, carrier density and abrasion resistance, can effectively reduce the contact resistance between the brush and a commutator to prolong the servicelife.

Being related to electric contact material, i.e. brush, the invention discloses brush prepared from carbon fiber, graphite, silver based composite material in optimal adaptation among conduction, intensity, and wear resistance. Characters are that raw materials of the brush include silver powder, copper powder, graphite, and copper coated carbon fiber. Comparing with products in same domestic designation, the disclosed product increases performance of frictional wear remarkably, and raises service life to 2-3 times. Controlling pressure, and pressing time, the invention controls falling over direction of carbon fiber so as to low resistivity of brush, and increase density of carrying current. The invention raises electrical and mechanical performances of composite material (resistivity 0.06-0.09 micro ohm .m), and manufactures moderated, stable thickness of oxide film on surface of collector ring.

An electromechanical carbon brush 1 applied against a conductive rotating body 2 has a brush base material which is a material made of an aggregate including carbon as at least one (1) ingredient and of a binder, the electromechanical carbon brush 1 containing 0.2 to 10 % by weight of a water-soluble lubricant, 0.2 to 3 % by weight of fluorine denatured silicone oil or 0.2 to 10 % by weight of the water-soluble lubricant and a metallic compound, relative to the brush base material.

The present invention disclose an automatic scissors apparatus of eletricity stranded wire, including scissors position sender driving device, the scissors position sender driving device is provided with shearing device, the upper blade and bottom blade of the crank arm of the shearing device and two connecting bar together with another driving device connecting to form general slipper block parallel connection four-bar mechanism; the crank arm of the upper blade and the bottom blade applies arms of different size. The automatic scissors eletricity stranded wire apparatus can shear thread end without hairpin, possessing great universality, never affected by linetype and quantity, operational safety, knife edge easily redressing, long service life, saving energy sources and providing support for full-automatic ] pressing lined brush.

A metal-graphite brush comprises a brush body which is made by mixing and molding metal powder and graphite powder. 2 mg to 30 mg as amounts of phosphate ion of at least one of phosphoric acid and a phosphate compound is added to 1 g of the brush body of the metal-graphite brush.

A slip ring has a slip ring track with a contact area, the contact area containing a plurality of pores or cavities. A lubricant is held within these pores and cavities and is enclosed by a top coating. When a slip ring brush is sliding over the slip ring track, it rubs off particles of the top coating, therefore opening some of the pores or cavities which release parts of the lubricant contained therein. This lubricant reduces surface friction of the slip ring brush at the slip ring track and therefore further wear, which results in an extended lifetime.

A test probe assembly includes a first elongate electrically conductive plunger that extends from a proximal first plunger end to a distal first plunger end, and is defined in part by a central longitudinal axis. The first plunger has a first spring latch at the distal first plunger end. At least a portion of the first plunger has an arc with a first plunger outer contact point opposite the first spring latch relative to the longitudinal axis. The first plunger is disposed in a spring. The first plunger outer contact point in contact with the inner diameter of the spring, and the first spring latch engages at least a portion of the spring. A method includes disposing a first plunger within a spring along a spring longitudinal axis, disposing a second probe within the spring along the spring longitudinal axis, and engaging the spring latch and the second plunger spring latch with the spring, for instance by capturing an end coil of the spring with the spring latch of at least one of the spring latch or the second plunger spring latch.