Friction- and wear-reducing joint for a bush chain or roller chain

US9657810B2 · kind B2 · utility

Assignee

• IWIS MOTORSYSTEME GMBH & CO. KG · DE

Inventors

• Richard Koschig · Freising, DE
• Stefan Belmer · Anzing, DE

Key dates

• Filing date: Aug 1, 2013
• Grant date: May 23, 2017
• Expiry date: Oct 18, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16G13/06
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A rocker joint for a bush chain or roller chain, comprises a bush having a through-passage running along the bush longitudinal axis, a first rocker surface formed in the through-passage, and a pin arranged in the through-passage of the bush and which has a second rocker surface formed thereon. A chain comprises inner and outer chain links, which are offset relative to each other, the inner and outer chain links being connected by rocker joints, each of which comprises a bush and a pin. A friction-reducing joint and a chain with reduced friction and less wear are provided, and thus a reduced CO2 emission of the associated internal combustion engine, the chain being stable and easy to produce. This is achieved in that the bush is configured as a straight circular cylinder in which the through-passage is arranged in the bush eccentrically with respect to the longitudinal axis of the bush.