Linear drive, longitudinal adjustment unit of a seat, and motor vehicle

US11813967B2 · kind B2 · utility

Assignee

• IMS GEAR SE & CO. KGAA · DE

Inventors

• Wolfram Hofschulte · Bonndorf, DE
• Jens Fechler · Leonberg, DE
• Marco WERSCHLER · Radolfzell, DE
• Marcel MITTELBACH · Schluchsee, DE
• Nikolai Benz · Stegen, DE
• Stephan Oberle · Unterkirnach, DE

Key dates

• Filing date: May 28, 2020
• Grant date: Nov 14, 2023
• Expiry date: Jul 1, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H55/08
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The present invention relates to a linear drive (1), comprising a drive shaft (10) arranged along a longitudinal axis (X), at least two propulsion teeth (20), and at least one rack (30) having a plurality of teeth (31), wherein the propulsion teeth (20) can move in a stroke transversely to the longitudinal axis (X) and are drivingly coupled to the drive shaft (10) in such a manner that the at least two propulsion teeth (20) perform at least one cyclical stroke movement (21) in the course of one rotation (φ) of the drive shaft (10) and enter and exit the at least one rack (30) to generate a propulsion in the longitudinal axis (X), and wherein the cyclical stroke movement (21) of the at least two propulsion teeth (20) takes place with a phase shift (Δφ). In addition, the present invention relates to a longitudinal adjustment unit and to a motor vehicle having such a longitudinal adjustment unit.