Title:
BEARING RETAINER, MOLD FOR BEARING RETAINER, AND METHOD FOR MANUFACTURING BEARING RETAINER
Document Type and Number:
WIPO Patent Application WO/2019/065767
Kind Code:
A1
Abstract:
Provided are a bearing retainer having excellent strength in weld portions thereof, an injection molding mold used in the manufacture thereof, and a method for manufacturing a bearing retainer using said mold. A bearing retainer 1 is an annular bearing retainer made from resin, which can be obtained by injection molding using a mold for a bearing retainer having variable volume resin-rich areas, and is provided with a plurality of pocket portions 5 for retaining rolling elements, pillar portions 4 positioned between each of the pocket portions 5, and two ring portions 2, 3 securing the pillar portions 4 on both sides in the axial direction, wherein at least one of the ring portions has weld lines (weld portions 8) in one location or a plurality of locations in the circumferential direction, and the weld lines have a convex shape to one side in the circumferential direction.
Inventors:
MOTEGI ATSUSHI (JP)
HISHIDA TOMOHIRO (JP)
SHIMIZU TAKUYA (JP)
HISHIDA TOMOHIRO (JP)
SHIMIZU TAKUYA (JP)
Application Number:
PCT/JP2018/035765
Publication Date:
April 04, 2019
Filing Date:
September 26, 2018
Export Citation:
Assignee:
PLAMO CO LTD (JP)
NTN TOYO BEARING CO LTD (JP)
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/56; B29C45/26; F16C33/46
Foreign References:
| JP2012236363A | 2012-12-06 | |||
| JPH068293A | 1994-01-18 | |||
| JP2002301742A | 2002-10-15 | |||
| JP2014188912A | 2014-10-06 | |||
| JP2012219917A | 2012-11-12 |
Attorney, Agent or Firm:
WAKI Hikaru et al. (JP)
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