Unlocking device

US9151578B2 · kind B2 · utility

Assignee

• TRW AIRBAG SYSTEMS GMBH · DE

Inventors

• Ernst Enzmann · Prien am Chiemsee, DE
• Achim Hofmann · Polling, DE
• Rolf Ruckdeschel · Schwangau, DE
• Johann Seidl · Töging, DE

Key dates

• Filing date: Dec 8, 2011
• Grant date: Oct 6, 2015
• Expiry date: Dec 19, 2031

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E05B81/02
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an unlocking device (10), especially for a vehicle protection device, comprising a locking bar (16) which in a locked position establishes a connection positive at least in portions between a first component (12) to be unlocked and a second component (14) and permits relative motion of the two components (12, 14) in an open position. The unlocking device (10) further comprises a pyrotechnical actuator (18) including a pyrotechnical element (20) having a propelling charge and a piston-cylinder unit (22) having a piston (24) and a cylinder (26), wherein motion of the piston (24) or the cylinder (26) can be generated due to activation of the propelling charge upon ignition thereof and wherein the piston-cylinder unit (22) is connected to the locking bar (16) without redirection so that upon motion of the piston (24) or the cylinder (26) the locking bar is movable from its locked position into its open position.