Storage device for a safety belt with vehicle-sensitive locking

Details Storage device for a safety belt with vehicle-sensitive locking Storage device for a safety belt with vehicle-sensitive locking

1975-01-20

1976-05-25

McCarthy, Edward J.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

B65H 7548

Patent

active

039587746

ABSTRACT:
A storage device for a safety belt with vehicle-sensitive locking of belt in the direction of pull-out, including a coiling shaft rotatably mounted in a housing, a ratchet wheel axially movable on the coiling shaft and provided with peripheral teeth and with teeth on an end face, a pawl to arrest rotation of the ratchet wheel, an inertia member for moving the pawl into engagement with the peripheral teeth of the ratchet wheel, and teeth fast with the housing with which the end face teeth of the ratchet wheel co-operate and lock upon axial displacement thereof, wherein the ratchet wheel on that side remote from the end face teeth is stepped so that the top circle diameter of the peripheral teeth is smaller than the external diameter of the end face teeth. The ratchet wheel is mounted on the shaft by a smooth trunnion and has an internal thread which co-operates with an external thread on the shaft. Thus, within limits the ratchet wheel may rotate and move axially relative to the shaft. Spring means biassing the shaft for rotation in a direction of belt wind-up comprises a pair of spiral springs in series.

REFERENCES:
patent: 2437786 (1948-03-01), Oberdorf
patent: 3323749 (1967-06-01), Karlsson
patent: 3495786 (1970-02-01), Hemens
patent: 3666198 (1972-05-01), Neumann
patent: 3758044 (1973-09-01), Nilsson

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