Cage for bearing and bearing using the same
AssigneeKoyo Seiko Co., Ltd.
InventorsTsugio Matsushita, Shigetaka Ashida
Life of this patent
Estimating the term…
Abstract
The invention has plural plate-like members, each molded by a metal die using a synthetic resin material in a shape having pockets for retaining rolling elements. A shape obtained by mutually connecting each of the plural plate-like members with connecting portions at both ends is a substantially cylinder shape. A shape of a section between both end portions of each plate-like member has a convex warped shape constituting a part of the cylinder by being subjected to a distortion action owing to heat contraction after being molded by the metal die.
Claims9
A cage for bearing basically composed of plural plate-like members, each molded from a synthetic resin material by a metal die in a shape having pockets for retaining rolling elements,
- wherein a shape obtained by mutually connecting each of said plural plate-like members at both end portions is a substantially cylinder shape, and
- a section between said both end portions of said each plate-like member has a convex warped shape constituting a part of said cylinder by being subjected to a distortion action owing to heat contraction after being molded by said metal die.
A cage for bearing according to 4, wherein said plate-like member is formed with said elongated grooves at a side of said pocket.
A bearing having an inner ring, an outer ring, plural rolling elements interposed between said inner ring and said outer ring, and a cage for retaining said rolling elements,
- wherein said cage is basically composed of plural plate-like members, each molded from a synthetic resin material by a metal die in a shape having pockets for retaining rolling elements,
- a shape obtained by mutually connecting each of said plural plate-like members at both end portions is a substantially cylinder shape, and
- a section between said both end portions of said each plate-like member has a convex warped shape constituting a part of said cylinder by being subjected to a distortion action owing to heat contraction after being molded by said metal die.
Dependencies are inferred from the claim text.