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AssigneesKoyo Seiko Co., Ltd., Shin-Kobe Electric Machinery Co., Ltd.
InventorsTakanori Kurokawa, Hirokazu Arai, Shinichi Tahara, Syouji Sawai
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An electric power steering apparatus including a reduction mechanism 5 for transmitting an output of a steering assist motor 1 to a steering mechanism through a worm 3 and a worm wheel 4, in which the worm wheel 4 is formed by a thermosetting synthetic resin filled with a sheet 6 of aramid fibers having a low attacking property to a counter member and an effect of improving the abrasion resistance of the synthetic resin. Even when the reduction mechanism is used in an engine room or the temperature of the reduction mechanism is raised by frictional heat with heightening power, the reduction mechanism is durable, and further the gears have excellent abrasion resistance and toughness and improved durability.
A method of manufacturing at least one of the driving gear or a driven gear for an electric powered steering apparatus for assisting steering by transmitting an output of a steering assist motor to a steering mechanism through said driving gear and said driven gear meshing with said driving gear, the method comprising the steps of:
A method of manufacturing at least one of the driving gear or a driven gear for an electric powered steering apparatus for assisting steering by transmitting an output of a steering assist motor to a steering mechanism through said driving gear and said driven gear meshing with said driving gear, the method comprising the steps of:
Dependencies are inferred from the claim text.