Sealing sleeve for geared shaft of gearmotor assembly

US10458237B2 · kind B2 · utility

Assignee

• Nidec Motor Corporation · US

Inventors

• Joshua M. Biro · Holden, US
• William D. Moore · Florissant, US
• Philip S. Johnson · Granite City, US
• Jeffrey M. Hutsler · Troy, US
• Paul G. Michaels · Chesterfield, US
• Daniel E. Hilton · Chesterfield, US

Key dates

• Filing date: Oct 21, 2016
• Grant date: Oct 29, 2019
• Expiry date: Sep 15, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K7/14
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A motor includes a shaft rotatable about an axis, an engaged component engaged by the shaft, a sleeve fixed to the shaft to rotate therewith, and a seal at least partly circumscribing the shaft. The shaft includes an engagement region presenting a substantially variable outer shaft surface that at least in part engages the engaged component. The sleeve includes a first section that at least partly circumscribes and engages the engagement region of the shaft. The first section of the sleeve presents an outer seal-engaging surface and an outer bearing-engaging surface. The seal and the bearing each at least partly circumscribe the engagement region of the shaft and the first section of the sleeve to engage the seal-engaging surface and the bearing-engaging surfaces, respectively, of the sleeve.