Motor vehicle seat

• US 6,082,817 A
• Filed: 02/27/1998
• Issued: 07/04/2000
• Est. Priority Date: 02/27/1997
• Status: Expired due to Term

• Current Assignee: Inova GmbH - Technische Entwicklungen
• Original Assignee: Inova GmbH - Technische Entwicklungen
• Inventors: Muller, Olaf
• Primary Examiner(s): Brown, Peter R.
• Application Number:
  US09/031,914
• Time in Patent Office: 858 Days
• Field of Search: 297/216.13, 297/216.12, 297/216.1, 297/391, 297/216.14
• US Class Current: 297/216.12
• CPC Class Codes: B60N 2/1842 pivoting about an axis located in the rear
• CPC Class Codes: B60N 2/4214 longitudinal
• CPC Class Codes: B60N 2/42727 involving substantially rigid displacement
• CPC Class Codes: B60N 2/42781 mechanical triggering
• CPC Class Codes: B60N 2/4279 electric or electronic triggering
• CPC Class Codes: B60N 2/43 Safety locks for back-rests B60N2/433
• CPC Class Codes: B60N 2/865 providing a fore-and-aft movement with respect to the occupant's head
• CPC Class Codes: B60N 2/888 with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest
• CPC Class Codes: B60N 2/99 adjustable
• CPC Class Codes: B60R 22/1951 characterised by arrangements in vehicle or relative to seat belt
• CPC Class Codes: B60R 22/1952 Transmission of tensioning power by cable; Return motion locking means therefor
• CPC Class Codes: B60R 22/1955 Linear actuators
• CPC Class Codes: B60R 22/26 secured to the seat

Abstract

A motor vehicle seat is disclosed having a backrest on which a headrest is adjustably arranged. In this case, a headrest, which can be adjusted into a protective or safety position, and an energy accumulator are provided which can be activated in the event of a crash and operates a driving device which is designed for adjusting the headrest into the protective or safety position.

Claims

1. Motor vehicle seat comprising:

a backrest;

a headrest including a headrest body and anchoring supports arranged on said backrest;

a frame connected to said anchoring supports;

an articulated suspension connecting said headrest body to said frame;

supporting levers linked at first ends to the headrest body and having second ends received in guiding slots defined in said frame, the guiding slots including detents into which ends of the supporting levers lock as said headrest body moves into a protective or safety position; and

a driving device interconnected with said articulated suspension by which the headrest body is moved into the protective or safety position.

2. Motor vehicle seat according to claim 1, wherein the driving device is constructed as a pyrotechnic driving device.

3. Motor vehicle seat according to claim 1, and further comprising prestressed spring devices by which the articulated suspension is prestressed to move the headrest body into the protective or safety position.

4. Motor vehicle seat according to claim 1, and further comprising a Bowden cable which interconnects the driving device with the articulated suspension for adjusting the headrest into the protective or safety position.

5. Motor vehicle seat according to claim 1, wherein the articulated suspension moves said headrest body from a normal operating comfort position into a higher and obliquely forward inclined position which defines the protective or safety position.