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Patent Searching and Data


Title:
COOLING STRUCTURE FOR BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/188621
Kind Code:
A1
Abstract:
This bearing device has an outer ring spacer (15) and an inner ring spacer (16) which are interposed so as to be respectively adjacent to the outer rings (3a, 4a) and the inner rings (3b, 4b) of rolling bearings (3, 4). The outer rings (3a, 4a) and the outer ring spacer (15) are installed in a housing (2), and the inner rings (3b, 4b) and the inner ring spacer (16) are fitted to a rotary shaft (1). An air supply port (23), which blows cooling compressed air (A) toward the outer circumferential surface of the inner ring spacer (16), is provided in the inner circumferential surface of the outer ring spacer (15). A discharge passage which guides the compressed air (A) from spacer spaces (21A, 21B) to the outer circumference of the tip of the rotary shaft (1), is provided as a discharge passage (30) constituted by through-holes (31) provided to axially penetrate the outer ring (3a), and as a discharge passage (300) constituted so as to pass through the inside of the housing (2).

Inventors:
NASU, Keisuke (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
OKAMOTO, Naoya (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
Application Number:
JP2019/011602
Publication Date:
October 03, 2019
Filing Date:
March 19, 2019
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F16C37/00; B23Q11/12; F16C19/16; F16C19/54; F16C35/08
Domestic Patent References:
WO2015072383A12015-05-21
Foreign References:
JP2011231885A2011-11-17
JPH0645118U1994-06-14
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (Higobashi Nittai Bldg, 10-2 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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