Rotor and rotary fluid machine
AssigneeTaiho Kogyo Co., Ltd.
InventorsNaoki HORIBE, Masanori AKIZUKI, Hiroshi KANEMITSU
Life of this patent
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Abstract
First closing member and second closing member close opening portions at both ends of cylindrical member in an axial direction. Base is housed in a space formed by cylindrical member, first closing member, and second closing member, and rotates around an axis in the same direction as the axial direction of cylindrical member. Resin layers are formed on thrust surfaces of base. Groove C is a plurality of concentric circular grooves or a spiral groove formed on each resin layer, and the center of circles of the circular grooves or the center of a spiral of the spiral groove is different from the rotation center of base.
Claims4
A rotor comprising:
- a base housed in a space formed by a cylindrical member and a closing member that closes an opening portion at each of both ends of the cylindrical member in an axial direction, the base rotating around an axis in the same direction as the axial direction;
- a resin layer formed on a thrust surface of the base;
- and
- a plurality of concentric circular grooves or a spiral groove formed on the resin layer, the center of circles of the circular grooves or the center of a spiral of the spiral groove being different from a rotation center of the base.
Dependencies are inferred from the claim text.