Actuator power transmission mechanism and turbocharger

Patent metadata

Field	Value
Publication number	US-2016003138-A1
Application number	US-201514857154-A
Country	US
Kind code	A1
Filing date	Sep 17, 2015
Priority date	Jul 4, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

An actuator power transmission mechanism includes: a first lever that rotates by power of an actuator; a drive shaft that has one end fixed to the first lever and rotates integrally with the first lever; one or more nozzle vanes that are directly or indirectly coupled to the other end side of the drive shaft, rotate interlocking with the drive shaft, and adjust an inclination angle with respect to a flow direction of a fluid; and a bearing that has an insertion hole through which the drive shaft is inserted, and that rotatably supports the drive shaft, and a suppression portion that suppresses infiltration of water that runs along an outer peripheral surface of the bearing into the insertion hole is provided at the outer peripheral surface of the bearing.

First claim

What is claimed is:

1 . An actuator power transmission mechanism comprising:
a rotary plate configured to rotate by power of an actuator; a drive shaft configured to rotate integrally with the rotary plate, one end of the drive shaft being fixed to the rotary plate; one or more adjusters directly or indirectly coupled to the other end side of the drive shaft, configured to rotate interlocking with the drive shaft to adjust an inclination angle with respect to a flow direction of a fluid; and a bearing provided with an insertion hole through which the drive shaft is inserted, and the bearing configured to rotatably support the drive shaft, wherein a suppression portion that suppresses infiltration of water that runs along an outer peripheral surface of the bearing into the insertion hole is provided at the outer peripheral surface of the bearing, wherein a part of the bearing is formed in a cylindrical shape that is press-fitted into a housing, and wherein the outer peripheral surface of the bearing is exposed between the housing and the rotary plate.

2 . The actuator power transmission mechanism according to claim 1 , wherein the suppression portion includes a bearing projection portion that projects in a radial direction of the drive shaft from the outer peripheral surface of the bearing.

3 . The actuator power transmission mechanism according to claim 2 , wherein the bearing projection portion annularly extends over a peripheral direction of the drive shaft.

4 . The actuator power transmission mechanism according to claim 3 ,
wherein a groove that extends in a peripheral direction of the bearing is formed in the outer peripheral surface of the bearing, and wherein the bearing projection portion is fitted in the groove.

5 . The actuator power transmission mechanism according to claim 1 , wherein a rotary plate projection portion that projects toward the other end side of the drive shaft, and is located outside in the radial direction of the drive shaft is provided on the rotary plate.

6 . The actuator power transmission mechanism according to claim 2 , wherein a rotary plate projection portion that projects toward the other end side of the drive shaft, and is located outside in the radial direction of the drive shaft is provided on the rotary plate.

7 . The actuator power transmission mechanism according to claim 3 , wherein a rotary plate projection portion that projects toward the other end side of the drive shaft, and is located outside in the radial direction of the drive shaft is provided on the rotary plate.

8 . The actuator power transmission mechanism according to claim 4 , wherein a rotary plate projection portion that projects toward the other end side of the drive shaft, and is located outside in the radial direction of the drive shaft is provided on the rotary plate.

9 . The actuator power transmission mechanism according to claim 5 , wherein at least a part of the bearing projection portion and a part of the rotary plate projection portion overlap with each other seen from the radial direction of the drive shaft.

10 . The actuator power transmission mechanism according to claim 6 , wherein at least a part of the bearing projection portion and a part of the rotary plate projection portion overlap with each other seen from the radial direction of the drive shaft.

11 . The actuator power transmission mechanism according to claim 7 , wherein at least a part of the bearing projection portion and a part of the rotary plate projection portion overlap with each other seen from the radial direction of the drive shaft.

12 . The actuator power transmission mechanism according to claim 8 , wherein at least a part of the bearing projection portion and a part of the rotary plate projection portion overlap with each other seen from the radial direction of the drive shaft.

13 . The actuator power transmission mechanism according to claim 2 , wherein
the bearing projection portion has: a cylindrical portion that abuts against the outer peripheral surface of the bearing; and a plate portion that is connected to the cylindrical portion and formed in a disk shape through which the bearing penetrates.

14 . The actuator power transmission mechanism according to claim 13 ,
wherein the bearing projection portion further has a cylindrical portion whose outer diameter and inner diameter are larger than the cylindrical portion, and wherein the plate portion is provided between these cylindrical portions, and couples them to each other.

15 . A turbocharger comprising an actuator power transmission mechanism according to claim 1 .

Assignees

• Ihi Corp

Inventors

• Iizuka Kuniaki
• Eguchi Masatoshi
• Asada Yasushi
• Kagimoto Osamu
• Takahashi Masashige
• Ohkuma Hideumi
• Suruga Yohei
• Katayama Suguru
• Kitazawa Toshihiko

Classifications

• F02B37/24 Primary

  by using pumps or turbines with adjustable guide vanes · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title

• F01D17/165

  for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line (F01D17/167 takes precedence) · CPC title