JPS58149535U

JPS58149535U - Turbo gear bearing protection structure

Info

Publication number: JPS58149535U
Application number: JP4648282U
Authority: JP
Inventors: 宏小松
Original assignee: 日産自動車株式会社
Priority date: 1982-03-31
Filing date: 1982-03-31
Publication date: 1983-10-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来例の側面断面図である。第２図Ａは本考案
の第１の実施例に係るヒートインシュレータの正面図、
第２図Ｂはその■−■断面図である。第３図は同じく第
２の実施例に係るヒートインシュレータの正面図である
。第４図Ａは同じく第３の実施例に係るセンタハウジン
グの側面断面図、第４図Ｂはそのフランジ部の正面図で
ある。第５図は同じく第４の実施例に係るセンタハウジングの
フランジ部の正面図である。第６図Ａは同じく第５の実
施例に係るタービンハウジングの側面断面図、第６図Ｂ
はその要部背面図である。１・・・・・・タービン、２・・・・・・コンプレッサ
、３・・・・・・タービン軸、４・・・・・・タービン
ハウジング、４Ａ・・・・・・タービンハウジングの円
筒面、５・・・・・・コンプレッサハウジング、６・・
・・・・センタハウジング、６Ａ・・・・・・センタハ
ウジングの軸受保持部、６Ｂ・・・・・・センタハウジ
ングのフランジ部、７・・・・・・軸受、９・・・・・
・ヒートインシュレータ、９Ａ・・・・・・ヒートイン
シ□　ユレータのフランジ部、１２・・・・・・空隙部
。FIG. 1 is a side sectional view of a conventional example. FIG. 2A is a front view of the heat insulator according to the first embodiment of the present invention;
FIG. 2B is a sectional view taken along the line ■-■. FIG. 3 is a front view of the heat insulator according to the second embodiment. FIG. 4A is a side sectional view of the center housing according to the third embodiment, and FIG. 4B is a front view of the flange portion thereof. FIG. 5 is a front view of the flange portion of the center housing according to the fourth embodiment. FIG. 6A is a side sectional view of the turbine housing according to the fifth embodiment, and FIG. 6B
is a rear view of the main part. 1...Turbine, 2...Compressor, 3...Turbine shaft, 4...Turbine housing, 4A...Cylindrical surface of turbine housing , 5... Compressor housing, 6...
...Center housing, 6A...Bearing holding part of center housing, 6B...Flange part of center housing, 7...Bearing, 9...
・Heat insulator, 9A...Heat insulator □ Flange part of insulator, 12...Gap part.

Claims

[Scope of utility model registration request]

In a turbocharger in which a gas seal portion is formed by a flange portion of a center housing provided with a bearing, a flange portion of a heat insulator that partitions an exhaust turbine and the center housing, and a cylindrical surface of the turbine housing into which each of the flange portions fits, A bearing protection structure for a turbocharger, characterized in that a gap portion is provided in a region of the gas seal portion that is thermally adjacent to a bearing holding portion of a center housing to reduce the amount of heat transferred from the turbine housing to the holding portion. .