Autoliv Development Ab

Milos Cekic

Günter Clute

A belt retractor including a self-orienting vehicle-acceleration-sensitive sensor device () including a belt shaft, and a first blocking device blocking the belt shaft in the belt extraction direction, which is controllable by the sensor device (). The sensor device () includes a sensor housing () pivotable about a pivot axis (S), which is fixable with respect to the frame using a second blocking device (). A contact surface () for an inertial mass is provided in the sensor housing (). The contact surface () is shaped such that in the case of an oriented sensor housing () starting from the center of the contact surface (), the line of intersection between the contact surface () and a first central plane (E) extending through the center of the contact surface () perpendicular to the pivot axis (S) has a flatter angle (W) with respect to the horizontal plane (H) than the line of intersection between the contact surface () and a second central plane (E) extending through the center of the contact surface () perpendicular to the first central plane (E).

Belt retractor with a self-aligning sensor device sensitive to vehicle accelerations

A seat belt retractor () with a vehicle-sensitive, inertia sensor (), and a blocking device to block belt extraction movement of a belt shaft () controllable by an inertia sensor (). The inertia sensor () has a sensor housing () with a gearing () mounted to swivel, blocking element () coupled on the belt shaft (), engages in the gearing () in a first position to fix the sensor housing () and swivels during a belt retraction movement from a first position into a second position where it does not engage in the gearing (). A guide is provided in the form of a longitudinal recess () with a variable width. The blocking element () engages with a protrusion () in the recess () and during the rotation of the belt shaft () to cause relative movement in the longitudinal direction of the recess ().

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Hamburg, Germany

Milos Cekic