DE102006030762B3 - Method for activating head safety belt in vehicle with safety interlock on main belt clasp to block the head belt if the main belt is not secured - Google Patents

Abstract

In this innovation for vehicles, e.g. Cars, is a device for activating the belt retractor of a head-safety belt as soon as the usual body-safety belt is fully engaged in its buckle. A sensor in or on the buckle of the body-seat belt or on the body harness strap or body harness itself locks an electrical circuit to the seat belt webbing retractor with the body seat belt fully engaged, so that the head belt retractor then provides its intended Function with locking lock during rear-end collision exercises.

Description

at this innovation for Vehicles, e.g. Cars, it is a device for activation the belt retractor of a head-safety belt, once the usual body-safety belt firmly locked in the buckle is applied.

people in the ever-faster moving vehicles, especially cars, require head-belts as a supplement to the self-evident today Body safety belts. neck fractures and the many whiplashes of the cervical spine and neck area be prevented. The previous solutions of the head protection with Help the air bags are unsatisfactory, especially because air bags only successful at impact speeds of 50 km / h (30 mph). Also, glasses on the face of motorists by air bags rear-end collisions smash and cause facial injuries.

As the German patent application with the file number 10 2005 045 025.3-22 from 12.9.2005 Schmuecker provides, is in each case a belt retractor for the head-safety belt and one for provided the body-safety belt. In the event of an accident, both belt retractors lock in absolutely the same Moment.

problem

Of the Head safety belt and the body safety belt each have their own belt retractor. Would now the seat belt only for the head alone or (inadvertently) the body seat belt only incomplete locked in the lock can be created, so can in rear - end collision phenomena of Person arise. Because the head-belt only when the body safety belt is worn reliable protects requires a device that ensures that the belt retractor Head-belt only works blocking in accident, if the body safety belt reliable clicked on.

State of technology

From the utility model DE 20 2005 014 874 U1 von Schmücker from 12.09.2005 shows the need for the simultaneous blockage of the body belt and headgear.

Kihlberg et al. describe in the patent DE 697 21 815 T2 Ensuring the function of other safety devices in motor vehicles, if the belt strap for the body-safety belt is properly anchored in the buckle. This check is carried out within the buckle.

Scrabalat describes in the patent DE 600 04 117 T2 a similar device as Kihlberg, the device of Scrabalat provides a review and control of other functions by means of a plug outside the buckle but at the same provides.

task

For use a head-belt in addition to a body-belt is to provide a device that ensures that the belt retractor the head-belt only works blocking in the accident, if the body safety belt is properly created.

invention

The Problem that the belt retractor of a head-belt only then blocking may lock when the body seat belt is guaranteed applied is, solves the present invention by a sensor in the buckle of Body belt. This sensor closes with perfectly engaged body safety belt an electrical circuit to the belt retractor of the head-safety belt, then the belt retractor of the head-safety belt its intended Function with locking lock in the accident can exercise.

Of the Sensor in or at the belt buckle of the body-seat belt can consist of a mechanical lever that locks when the body-belt as an electrical switch works and a circuit with the retractor of the head-belt closes. The belt retractor of the head-safety belt can then lock in the situation of rear-end collision. If, however, no electrical current from the sensor to the belt retractor the head-belt is flowing, The belt retractor does not block the rear-end collision.

Of the Sensor in the belt buckle of the body-seat belt can - like described above - from one mechanical lever exist. This lever or device can not only on or in said buckle, but also on the to be inserted of the body-seat belt to be appropriate. Possible is also a light barrier or other to close the circuit.

All in all is prevented by the innovation that the head-belt retractor - if without worn body safety belt - at one Rear-end collision would arrest. The belt retractor of the applied head-safety belt can thus only at complete in the buckle locked body seat belt be effective.

Claims (1)

Device for the seat belt retractor of a head safety belt, which under the coexistence of head and body safety belt each with its own belt retractor the retractor of the head safety belt of the vehicle is activated for the purpose of blocking lock the head strap at the rear-end collision, characterized in that a sensor in or is attached to the buckle of the body-safety belt or the einzusteckenden strap of the body-seat belt or the body-seat belt itself, which has the electric switch function and can be designed as a mechanical lever or as a light barrier, and the exact click on the body-safety belt in his buckle electric circuit closes, so that the belt retractor of the head-safety belt is then always in function and blocked in a collision as intended by locking.