Winding – tensioning – or guiding – Coil holder or support – With material end retainer
Reexamination Certificate
1998-12-18
2001-03-20
Jillions, John M. (Department: 3653)
Winding, tensioning, or guiding
Coil holder or support
With material end retainer
C242S376000, C242S613400
Reexamination Certificate
active
06202957
ABSTRACT:
The invention relates to an arrangement for the rolling up of a belt band comprising an in particular cylindrically formed reel which has an axial cut-out extending parallel to the reel axle at its jacket surface, and a belt band fastened to the reel.
In arrangements of this kind the reel serves for the rolling up of the belt band along its jacket surface. For this the reel is induced to a rotational movement about its longitudinal axis by a suitable apparatus. A belt up-roller with a belt reel of which the hollow cylindrical jacket has a slit for the passage of a belt band to be wound up on the belt reel is known from the European patent specification 0 562 423 B1. The end of the belt band forms a loop which is pushed onto a torsion bar which extends coaxially to the belt reel through a hollow cylindrical inner space of the reel jacket.
A problem with known arrangements is their limited mechanical stability, in particular the stability of the reels along the edges of their axial cut-out in the event of an abrupt or permanent tensional stress acting tangentially to the jacket surface at the belt band, which is fastened in particular in the interior of the reel.
It is an object of the invention to improve the embodiment of the constituents of the arrangement and their cooperation in such a manner that their stability and permanent reliability is increased in simple manufacture and assembly.
This object is satisfied by a reinforcement element which is arranged at the reel and which bridges over the axial cut-out.
The reinforcement element is thus executed in such a manner that it substantially produces an additional mechanical connection between two oppositely disposed sides of the axial cut-out of the reel, in particular between two sides which are disposed opposite to one another in the wind-up or rotational direction of the reel respectively. For this it can be secured to the reel in the region of the cut-out or be a part of the reel.
Through the embodiment of the arrangement with the reinforcement element in accordance with the invention it is thus possible to transmit forces acting on one edge region of the cut-out at least partly to the respective opposite edge region of the cut-out via the reinforcement element. Transverse forces acting at the cut-out can thus be taken up by a wide region of the reel so that a lessening of the stability of the reel effected by the formation of the cut-out in it can be substantially compensated.
Through the bridging of the axial cut-out the mechanical stability of the reel is increased in the region of the cut-out in particular with respect to forces acting tangentially at the edge region of the cut-out. A breaking or tearing apart of the reel in the region of the cut-out can thereby be more effectively prevented; the reliability of the arrangement is increased.
Advantageous embodiments of the invention are described in the description, in the drawings and in the subordinate claims.
In favour of an advantageously simple assembly the securing of the reinforcement element to the reel is preferably done by hooking in. In this it is possible to transmit the force provided for the rotational drive of the reel for the rolling up of the belt band to the reinforcement element so that the hooked-in reinforcement element thereby remains fixed. In addition the belt band which is wound up on the reel can lie in contact with the hooked-in reinforcement element in such a manner that it fixes its mounting at the reel.
Alternatively to this it is possible to latch or otherwise permanently secure the reinforcement element at the reel so that no additionally acting fixing mechanism need be provided.
The handling of the arrangement in accordance with the invention during assembly is particularly simple if the reinforcement element is formed as a separate component. In an embodiment in which the reinforcement element covers over a part of the axial cut-out in particular it can be advantageous to arrange the separate reinforcement element at the reel only at an advanced assembly state of the arrangement.
Furthermore, it is advantageous if the reinforcement element is sunk at least partly in the reel when it is being secured to the latter. Through a form-fitted embodiment of the reinforcement element and the reel of this kind, namely, an at least substantially cylindrical form of the jacket surface of the reel can be obtained, through which the winding up of the belt band along this jacket surface is facilitated. Through the sunken arrangement of the reinforcement element inside the reel and through the additional lying on of the belt band at this arrangement, a particularly effective force lock between the reinforcement element and the reel is possible so that the stability of the reel is increased even further.
In a preferred embodiment the belt band is secured to the reinforcement element. In this case the belt band is secured to the reel via the reinforcement element. It is thereby possible to transmit a force to the reinforcement element via the belt band which, on the one hand, acts counter to a hook-in mechanism, through which the reinforcement element is secured to the reel. On the other hand, the force which is transmitted via the secured belt band to the reinforcement element can be transferred to the reel and in particular to the edge region of its axial cut-out and thus exploited for a stabilisation of the arrangement. The reinforcement element can thus counteract a draw effect of the belt band fastened to it through its securing at the reel while developing a stabilising action.
In this embodiment it is preferred that the reinforcement element is secured to the jacket surface from the outside since the assembly of the arrangement is thereby simplified. It is however also possible to secure the reinforcement element in the region of the axial cut-out from a cavity inside the reel and to lead the belt band, which is secured to the reinforcement element, outwards through the axial cut-out out of the reel.
In the arrangement in accordance with the invention and in particular in the securing of the reinforcement element, which is connected to the belt band, to the outer side of the reel, it is advantageous to lead the belt band in the direction of an axial cavity of the reel and to lead it there at least about a part of the peripheral surface of a shaft which is arranged inside the reel cavity coaxial to the reel axis. In this the shaft can at the same time serve for the transmission of a rotational movement or a torque required for the latter respectively to the reel for the rolling up of the belt band along the jacket surface of the reel, as well as for the deflection of the belt band and thus of the force transmitted via the belt band inside the reel cavity. The belt band, which is at least partly led along the peripheral surface of the shaft, can leave the reel cavity through the axial cut-out of the reel.
The securing of the belt band at the reinforcement element is preferably done via a closed loop at one end of the belt band which surrounds a part of the reinforcement element. A particularly favourable constructional embodiment of the arrangement in accordance with the invention is present when the reinforcement element has a securing pin extending transversely to the belt band direction, and holding means for securing the securing pin at a reception region of the reel, and when the reel has a receiving means at the reception region in which the holding means can be secured for the assembly of the arrangement or for the securing of the reinforcement element respectively.
The holding means preferably extends transversely over the axial cut-out of the reel in particular in a plane perpendicular to the reel axle so that the securing pin and the holding means are arranged at mutually opposite sides of the axial cut-out. Through this a particularly effective increase in the stability of the reel with respect to transverse forces acting at the axial cut-out can be achieved.
In this the arrangement is formed in such a manner that the holding means and
Bannert Georg
Hasse Hermann
Kempfle Thomas
Kopetzky Robert
Schnabl Roland
Foley & Lardner
Jillions John M.
Takata (Europe) Vehicle Safety Technology GmbH
LandOfFree
Arrangement for the rolling up of a belt band does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for the rolling up of a belt band, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for the rolling up of a belt band will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2494167