BEARING PRELOADING DEVICE - NTN TOYO BEARING CO LTD

Title:

BEARING PRELOADING DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/072352

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a bearing preloading device with which a helical compression spring can easily be prevented from falling out, without the use of a special component used for retaining the helical compression spring. Holes (25) are formed in a bearing ring (5) or another member (15) opposing the bearing ring (5) in the axial direction. The inner circumference of the holes (25) is formed with a threaded section (22) extending to the bottom surface of the hole, and a shallow hole section (26) having a larger inner diameter than that of the threaded section (22) and extending to the rim of the hole. A helical compression spring (21) can be screwed into the threaded section (22) from the axial direction. The shallow hole section (26) is set so as to be concentric with the threaded portion (22) and have a larger inner diameter than the outer diameter of the helical compression spring (21). The natural length of the springs (21) is set such that the spring protrudes from the shallow hole section (26) in the axial direction. The axial length of the shallow hole section (26) is set such that the spring (21) can be compressed so as to be contained within the hole (25).

Inventors:

SHIMIZU YASUHIRO (JP)

Application Number:

PCT/JP2014/079051

Publication Date:

May 21, 2015

Filing Date:

October 31, 2014

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

F16C25/08; F16C19/38; F16C33/64

Foreign References:

JP2006162011A	2006-06-22
JP2006194418A	2006-07-27
JP2003307210A	2003-10-31
JPS5925708U	1984-02-17
JP2007285384A	2007-11-01
JPH01269714A	1989-10-27
DE102004048720A1	2006-04-13
DE499877C	1930-06-14
JP4746469B2	2011-08-10

Other References: