Latching shifter for a bicycle transmission

US5666859A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Markus Arbeiter · Würzburg, DE
• Klaus Neumann · Niederwerrn, DE

Key dates

• Filing date: Dec 1, 1995
• Grant date: Sep 16, 1997
• Expiry date: Dec 1, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/20636
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

This invention relates to a latching shifter for bicycle transmissions, such as hub transmissions or derailleurs, with a housing, a latch element with notches, a latching spring with a latching lug and two projections, as well as a slide with different bias stages which interact with the projections of the latching spring. By changing the position of the slide, the projections of the latching spring are brought together with different bias stages of the slide, whereupon the latching spring is pressed with varying degrees of pressure by means of its latching lug into the notches of the latching element. The advantage of the externally adjustable bias is that the shifter can be individually adjusted in terms of the retention force which prevents unintentional shifting when the bicycle is in motion.