Clutch arrangement comprising a shift piston and a piston housing

US9518621B2 · kind B2 · utility

Assignee

• Volvo Construction Equipment AB · SE

Inventor

• Thomas Andersson · Eskilstuna, SE

Key dates

• Filing date: Dec 21, 2012
• Grant date: Dec 13, 2016
• Expiry date: Dec 21, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2300/14
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A clutch arrangement includes a shift piston and a piston housing. The shift piston is arranged to be displaced in an axial direction relative to the piston housing between at least one gear position and a neutral position. The clutch arrangement also includes a spring element for forcing the shift piston towards the neutral position. The clutch arrangement includes a first return piston and a second return piston arranged on opposite sides of the spring element, and the spring element is accommodated within a recess of the shift piston and is pretensioned between the first return piston and the second return piston. In the neutral position the first return piston is forced by the spring element against a first stop element of the shift piston, defining an end position for the first return piston relative to the shift piston, and the second return piston is forced by the spring element against a second stop element of the shift piston, defining an end position for the second return piston relative to the shift piston.