Harmonic reduction gear and safety belt apparatus in motor vehicles comprising a harmonic reduction gear of this kind

US6340127B1 · kind B1 · utility

Assignee

• TAKATA (EUROPE) Vehicle Safety Technology GmbH · DE

Inventors

• Robert Kopetzky · Lonsee, DE
• Thomas Kempfle · Bibertal, DE

Key dates

• Filing date: Oct 29, 1999
• Grant date: Jan 22, 2002
• Expiry date: Oct 29, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H25/04
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a harmonic reduction gear comprising a drive-side eccenter (12) which engages into a complementary opening (13) of an outer toothed member (14), and a housing-fixed inner toothed ring (15) which is arranged around the outer toothed member (14) and on which the outer toothed member (14) rolls with the reversed rotational sense as the eccenter (12) when the eccenter (12) is rotated. The invention consists in that the outer toothed member (14) has only few, preferably only two at least substantially diametrically opposed teeth (16, 17) of which during rotation of the eccenter (12) in each case one (16) is pushed into a tooth depression (18) of the inner toothed ring (15) while the other (17) is lifted out of the inner toothed ring (15) and is pivoted counter to the rotational sense of the eccenter (12) to the next tooth depression (18′) into which, during further rotation of the eccenter (12), the other tooth (17) is pushed in with the first tooth (16) being lifted out, and so forth.