Shifter for actuating the gear mechanism of a bicycle

US6631655B2 · kind B2 · utility

Assignee

• SRAM DEUTSCHLAND GmbH · DE

Inventors

• Georg Blaschke · Geldersheim, DE
• Marcus Auer · Schweinfurt, DE

Key dates

• Filing date: Feb 16, 2001
• Grant date: Oct 14, 2003
• Expiry date: Apr 16, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/20648
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a shifter for actuating at least one gear mechanism of a bicycle including a housing, a gripping element for actuating the shifter, and a movable element for exerting tension on and/or for releasing a gear transfer means. The movable element has a pawl which engages in a set of latching teeth in the housing. The gripping element has a lifter which disengages the pawl from the latching teeth during a shifting operation in the release direction. A driver on the gripping part preloads a spring on the movable element during a shifting operation in the release direction which urges the movable element in the release direction. The advantage of a shifter for bicycle gear mechanisms according to the present invention is to be found in that, by simple means, it becomes possible to shift gears, especially in the release direction, quickly and independently of the preload being exerted on the movable element by the gear mechanism via the transfer element.