Title:
BEARING CAGE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/141437
Kind Code:
A1
Abstract:
A resin injection gate (51) is disposed at a pillar section (20). When a bearing cage (1) is divided into first and second regions (S1, S2) by an imaginary line (M) that connects the resin injection gate (51) and a weld (W) that is formed at a position radially opposing the resin injection gate (51), a resin reservoir (40) that can accumulate melted resin is provided at a pillar section (20) in only one of the regions. The circumferential distance between the resin reservoir (40) and the weld (W) is shorter than the circumferential distance between the resin reservoir (40) and the resin injection gate (51). The cross-sectional area of a communicating section (42) of the resin reservoir (40) that communicates with the pillar section (20) is equal to or less than 1/4 of the cross-sectional area of the resin injection gate (51).
Inventors:
KURAMOTO YOSHIKAZU (JP)
AIHARA NARIAKI (JP)
HIRAMOTO TAKAYUKI (JP)
AIHARA NARIAKI (JP)
HIRAMOTO TAKAYUKI (JP)
Application Number:
PCT/JP2016/054929
Publication Date:
August 24, 2017
Filing Date:
February 19, 2016
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
B29C45/26; F16C19/00; F16C33/41; F16C33/49
Foreign References:
| JP2012087890A | 2012-05-10 | |||
| JPH10318263A | 1998-12-02 | |||
| JP2013029164A | 2013-02-07 | |||
| JP3652396B2 | 2005-05-25 | |||
| JP5428839B2 | 2014-02-26 | |||
| JP2012219917A | 2012-11-12 |
Other References:
See also references of EP 3418024A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
Download PDF: