ONE-WAY CLUTCH

• US 20200132134A1
• Filed: 07/17/2018
• Published: 04/30/2020
• Est. Priority Date: 07/18/2017
• Status: Abandoned Application

• Current Assignee: Jtekt Corporation (Toyota Motor Corporation)
• Original Assignee: Jtekt Corporation (Toyota Motor Corporation)
• Inventors: OGAWA, Hiroshi
• Application Number:
  US16/627,952
• Publication Number:
  US 20200132134A1
• Time in Patent Office: Days
• CPC Class Codes: F16D 2250/0023 Shaping by pressure
• CPC Class Codes: F16D 41/067 and the members being distributed by a separate cage encircling the axis of rotation
• CPC Class Codes: F16D 67/02 Clutch-brake combinations
• CPC Class Codes: F16H 2041/246 relating to one way clutch of the stator

Abstract

A one-way clutch includes a rotating body, an outer ring arranged on an outer periphery of the rotating body, a roller, a biasing member, and a recess portion. The outer ring includes an indent portion. A wedge-shaped space is formed between the indent portion and an outer peripheral surface of the rotating body. The roller is disposed in the wedge-shaped space. The biasing member biases the roller to one side of the wedge-shaped space. The outer ring has a protrusion at a position corresponding to a radially outer side of the indent portion. The recess portion is formed continuously with the side surface in a circumferential direction of the protrusion on the outer peripheral surface of the outer ring.

Claims

1. A one-way clutch to be attached into an attachment hole formed in an attachment target member, in which a rotating body is rotatable in one direction relative to the attachment target member and the rotating body is restricted to rotate in the other direction, the one-way clutch comprising:

the rotating body;

an outer ring disposed on an outer periphery of the rotating body;

a roller;

a biasing member; and

a recess portion,

wherein the outer ring includes an indent portion that forms a wedge-shaped space between a cam surface inclined with respect to a rotation direction of the rotating body and an outer peripheral surface of the rotating body,

wherein the roller is disposed in the wedge-shaped space,

wherein the biasing member biases the roller to one side of the wedge-shaped space where a distance between the cam surface and the outer peripheral surface of the rotating body is narrow,

wherein the outer ring has a protrusion to fit into a fitting groove formed on an inner peripheral surface of the attachment hole at a position corresponding to a radially outer side of the indented portion, and

wherein the recess portion is formed on an outer peripheral surface of the outer ring so as to be continuous to a circumferential side surface of the protrusion.

2. The one-way clutch according to claim 1, wherein an inner surface of the recess portion has a curved surface with a curvature radius of 0.3 mm or more in a cross section perpendicular to a rotation axis of the rotating body.