The invention will now be explained in more detail based on exemplary embodiments referring to the figures. The drawing shows:
The upper and lower fastening points of the three-point belt system and the two-point system can be arranged directly on the seat as well as on external points of the vehicle structure. The B-pillar or C-pillar or even the roof structure come into consideration for the upper fastening points. The seat itself, the seat rail or even the floor assembly of the vehicle offer themselves for the lower fastening points.
In the two-point belt system 20, the second belt web 22 extends from a second belt retractor 28 to a second latch plate, which here is inserted into a second belt buckle 26.
According to the present invention, the second belt retractor 28 includes a blocking device as depicted in
The blocking device of this exemplary embodiment comprises a toothed wheel 32, which is rigidly connected to a belt spool 30 and can be blocked in the unwinding direction by engagement of the blocking lever 34 with the toothed wheel 32. For this, the blocking lever 34 is swivel-mounted around the axle 35. The blocking lever 34 has two arms 34a and 34b. The first arm 34a is connected to a tension spring 38, which pulls the blocking lever 34 into a position in which the catch 34c is disengaged from the toothed wheel 32. In this state, there is no blocking of the second belt retractor 28 as shown in
The actuator 36 may be any appropriate device capable of pulling on the second arm 34b. For example, the actuator 36 may be an electric motor, a solenoid, or, as shown in the preferred embodiment, an electromagnet magnetically linked to the blocking lever 34b.
The control of the actuator 36 proceeds according to a logic diagram illustrated in
This produces the following: If the occupant would first like to belt himself/herself with the two-point belt system, then this isn't possible because of the blocking of the second belt retractor 28. As soon as the occupant has put on the belt of the three-point system, then the blocking is lifted and the belt of the two-point system can be put on. The unblocked state of the second belt retractor 28 is maintained until both belts are released, so that it does not matter in what sequence the two belt buckles are opened when climbing out or in the event of an accident. The fact that the blocking of the second belt retractor 28 is always lifted in a de-energized state ensures that the second roller is not blocked in the event that the power supply of the vehicle is interrupted during an accident.
In the exemplary embodiment shown in
Mixtures of the exemplary embodiments shown in
As a person skilled in the art will readily appreciate, the above description is meant as an illustration of implementation of the principles this invention. This description is not intended to limit the scope or application of this invention in that the invention is susceptible to modification, variation and change, without departing from spirit of this invention, as defined in the following claims.
Number | Date | Country | Kind |
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DE 0357368.2 | Dec 2003 | DE | national |
This application claims priority to PCT/EP2004/011938 filed Oct. 22, 2004 and to DE 10357368.2 filed Dec. 9, 2003.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP04/11938 | 10/22/2004 | WO | 00 | 3/26/2007 |