Isolator decoupler

US11549558B2 · kind B2 · utility

Assignee

• Gates Corporation · US

Inventors

• Peter Ward · Hillsboro, US
• Xiaohua Chen · Nanhu, CN
• Charles M. Sendegeya · Windsor, CA
• Alexander Serkh · Troy, US
• Yahya Hodjat · Oxford, US
• Essie Rahdar · Calabasas, US
• Wanzhi Han · Windsor, CA

Key dates

• Filing date: Oct 9, 2018
• Grant date: Jan 10, 2023
• Expiry date: Nov 11, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2055/366
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An isolator decoupler comprising a shaft, a pulley journalled to the shaft, a one-way clutch engaged with the shaft, a spring carrier engaged with the one-way clutch, the spring carrier having a spring carrier surface, a torsion spring having a first end laser welded to the pulley and a second end laser welded to the spring carrier, the torsion spring having a volute with a width w, an annular spring support member having a spring support member outside surface, the annular spring support member independently moveable from the spring carrier and independently moveable from the shaft, a gap g between the annular spring support member and the spring carrier, the gap g being less than the width w, the first end comprising a first end coil, the first end coil bearing upon the spring support member outside surface, the first end coil laser welded to the spring support member outside surface, a torsion spring radial contraction limited by engagement with the spring carrier surface, and the gap g and the width w have a relationship (w−2r)>(g+c1+c2) were g>0.