Roll-up device for safety belts

Details Roll-up device for safety belts Roll-up device for safety belts

1981-12-31

1985-04-02

Hornsby, Harvey C.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

280806, 297478, 297480, A62B 3502, B65H 7548, B65H 7542, B60R 2110

Patent

active

045082898

ABSTRACT:
A roll-up device, particularly for safety belts used in vehicles. The device provides a so-called automatic belt blocker with belt-sensitive and/or vehicle-sensitive blocking of the belt winding spindle, which is provided with a projection which cooperates with a locking member, which in turn can be locked in place via detents which engage with notches associated with a housing. There is the problem that, in the event of high belt forces, the locking member will slip away from the projection, and thus from the notches of the housing, thereby freeing the blockage. The aim of the invention is therefore to prevent the locking member from breaking out of its predetermined position in this way. To solve this problem, at least one overlapping arrangement is provided between the projection of the belt winding spindle, and the radially deflectable locking member, to ensure that the locking member does not move out of its position in the axial direction of the belt winding spindle during blocking. The overlapping arrangement preferably includes an opening in the projection, and protrusions on the locking member, which protrusions engage in the opening. The entire locking member may also pass through the opening. The invention has the advantage of locking the locking member in position not only radially, but also axially.

REFERENCES:
patent: 1264636 (1918-04-01), Green
patent: 2375917 (1945-05-01), Gross
patent: 2708555 (1955-05-01), Heinemann et al.
patent: 3211496 (1965-10-01), Zaydel
patent: 4077585 (1978-03-01), Wiesbock
patent: 4101092 (1978-07-01), Schmelow et al.
patent: 4148446 (1979-04-01), Sugar
patent: 4168810 (1979-09-01), Sack et al.
patent: 4215830 (1980-08-01), Cunningham

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