Safety belt fastening device

In a safety belt fastening device for a safety belt system having a belt-tightening device that acts upon said fastening device and a belt fastening tongue that is latched in said fastening device, said safety belt fastening device comprising a fastener body having a fastening mechanism for said fastening tongue, and a spring loaded release button that acts on said fastening mechanism, the improvement wherein:

• said release button comprises two button portions which are coupled together and are movable relative to one another;
• a first one of said button portions is connected to said fastener body;
• a second one of said button portions is arranged above said first button portion in a direction opposite to a belt-tightening direction to be accessible for actuation;
• in a belt-tightening process, said first button portion follows a movement of said fastener body and said second button portion remains in an operating position determined by a rest position of said fastener body;
• and
• for a release of said fastening tongue, said second button portion is actuated in the belt-tightening direction and pushes said first button portion coupled thereto in the belt-tightening direction.