US 6,283,398 B1Granted

Seat belt retractor

AssigneeBreed Automotive Technology, Inc.

InventorMartin Specht

Life of this patent

Estimating the term…

Loading patent…

Abstract

The invention relates to a seat belt retractor comprising a seat belt spool (2) rotationally mounted on a frame (1) for winding and unwinding the seat belt, a blocking means (5) for blocking the rotation of the seat belt spool, a control element (6) by means of which the blocking means (5) can be actuated, a seat belt sensor mass (4) movably mounted on a support element (3) which rotates with the seat belt spool (2), a vehicle sensor mass (35) and a coupling device (14, 34) by means of which a moving connection can be established between the support element (3) and the control element (6) via the seat belt sensor mass (4) and/or the vehicle sensor mass (35). Said connection assures the transmission of a rotation of the seat belt spool in the direction of unwinding for actuating the blocking means. The support element (3) together with the seat belt sensor mass (4) positioned thereon and the control element (6) constitute a pre-assembled component unit (7).

Claims21

Dependent claims

A seat belt retractor comprising

a seat belt rotatably mounted on a frame for winding the safety belt on and off;
a blocking means for blocking the rotary movement of the belt reel;
a control member by which the blocking means is actuable;
a belt sensor mass which is mounted movably to a carrier member which rotates with the belt reel;
a vehicle sensor mass,
a coupling means with which a motion connection can be made between the carrier member and the control member by the belt sensor mass and/or the vehicle sensor mass, for transmitting a rotary movement of the belt reel in the winding-off direction, for actuation of the blocking means, wherein
the carrier member (3) with the belt sensor mass (4) mounted thereto and the control member (6) are contained in a pre-assemblable structural unit (7);
characterized in that
the pre-assemblable structural unit (7) can be fitted on the frame (1) or a holding means which can be secured to the frame (1), wherein
connecting elements (8, 9), which are fitted one into the other, on the frame (1) or on the holding means (10) and on the pre-assembled structural unit (7) form a rotary mounting for the control member (6) about the reel axis (11).

7 more elements

Dependencies are inferred from the claim text.