Winding – tensioning – or guiding – Reeling device – With spring motor
Patent
1998-05-20
1999-08-31
Darling, John P.
Winding, tensioning, or guiding
Reeling device
With spring motor
B60R 2236
Patent
active
059442778
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a self-locking belt reel, especially for motor vehicles, with a vehicle-sensitive and/or belt-sensitive control system for the locking member, which in a situation in which the reel needs to be locked prevents further rotation of the belt reeling shaft. It comprises a winding spring acting onto the belt reeling shaft and further comprises a control device which, when the belt is wound onto the reeling shaft provides a release position for the control disc rotating with the belt reeling shaft of the vehicle-sensitive and/or belt-sensitive control system of the belt reel. When the belt has been removed, it secures the control disc against further rotational movement resulting in the blocking of the belt reel.
A belt reel with the aforementioned features is described in German patent 41 32 876 whereby the control device comprises two meshing toothings with respectively arranged switching cams which, at predetermined switching states, engage one another and cause blocking of the control disc. In more detail, a first gear wheel is arranged on the belt reeling shaft which, depending on the switching state, meshes with one of two further gear wheel positioned at the two ends of a pivotably supported rocker on the belt reeling shaft. The three gear wheels each comprise a switching cam whereby two respective switching cams at predetermined removal states will engage one another so that pivoting of the rocker will result from further rotation of the belt reeling shaft upon removal of belt or spring action. The rocker, in turn, moves a switching lever cooperating with the outer toothing of the control disc between a release position and a locking position for the control disc, whereby stopping of the control disc in its rotational movement relative to further rotation of the belt reeling shaft results in pivoting of the locking member and thus locking of the belt reel. In this embodiment of the belt reel, it is achieved that, when a predetermined amount of belt has been removed, the locking system of the belt reel is constantly activated so that each further belt removal results in a locking action of the belt reel while return of the belt and a reverse movement of the belt reeling shaft past the correlated switching position results in a release of the blocking system.
The known belt reel has the disadvantage that for realization of the disclosed control for switching of the belt reel a plurality of components such as rocker, gear wheels, pivotable switching lever, and spring are required whereby their manufacture and mounting is complicated. The invention has the object to simplify for a belt reel having the aforementioned features the control device for switching.
SUMMARY OF THE INVENTION
The solution to this object results including advantageous embodiments and developments of the invention from the contents of the patent claims which follow the description.
The basic idea of the invention is that as a control device the control disc has a pinion toothing with a center point centrally arranged relative to the axis of rotation of the control disc. The pinion toothing meshes constantly with a control member which is positioned so as to pivot between a rotational position and a locking position at the belt reel, whereby the movement of the control member results in locking, respectively, release of the rotational movement of the control disc. The invention has the advantage that, in addition to the pinion toothing provided at the control disc, only one single additional component in the form of a control member displaceably positioned at the belt reel is required so that the construction of the belt reel, respectively, its control device and mounting is simplified. A further advantage is that the rotational movement of the belt reeling shaft is detected at the control disc positioned externally on the reeling shaft so that access to the end of the shaft itself is eliminated and the width of the belt reel is reduced.
When applying the principle known from Germa
REFERENCES:
patent: 4817885 (1989-04-01), Matsumoto
patent: 4948066 (1990-08-01), Matsumoto et al.
patent: 5232177 (1993-08-01), Hibata
patent: 5271578 (1993-12-01), Jabusch
patent: 5294070 (1994-03-01), Sugano et al.
patent: 5495993 (1996-03-01), Hibata
patent: 5518197 (1996-05-01), Gray
patent: 5772145 (1998-06-01), Bareiss et al.
patent: 5794879 (1998-08-01), Huber
patent: 5820059 (1998-10-01), Hibata et al.
Autoliv Development AB
Darling John P.
LandOfFree
Self-locking belt reel with retractor-type changeover control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-locking belt reel with retractor-type changeover control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-locking belt reel with retractor-type changeover control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2424050