Safety belt apparatus for vehicles

US6641077B2 · kind B2 · utility

Assignee

• Takata-Petri (Ulm) GmbH · DE

Inventors

• Harry Hanna · Craigavon, GB
• Robert Kopetzky · Lonsee, DE
• Martin Wifling · Blaustein, DE

Key dates

• Filing date: Dec 15, 2000
• Grant date: Nov 4, 2003
• Expiry date: Dec 15, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/01272
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A safety belt apparatus for vehicles, in particular motor vehicles having at least one safety belt, which is wound to a greater or lesser degree onto a belt reel rotatably secured on the vehicle chassis about an axis of rotation and preferably biased by a spring retraction mechanism. A toothed ratchet wheel is rotationally coupled to the belt reel and cooperating with a blocking pawl secured to the housing. The blocking pawl is movable into and out of engagement with respect to the toothed ratchet wheel by a cam ring concentric to the belt reel axis via a step down transmission. A toothed control wheel is connected to the belt reel via an eccentric transmission and has at its periphery a preferably wavelike arrangement of teeth which is surrounded by an inner toothed ring fixed to the housing of larger diameter and with complementary, but with a smaller or preferably larger number of teeth. As a results, the toothed control wheel stands in meshing arrangement with the inner toothed ring over a restricted peripheral region and diametrically opposite thereto. The two arrangements of teeth have a radial spacing such that the toothed control wheel rolls off on the inner toothed ring on…