DE3016913C2 - Safety device against unintentional unrolling of a shell rolled up on a winding shaft for opening closures - Google Patents

Description

25th

The invention relates to a safety device according to the preamble of the main claim.

A generic safety device is described in DE-GM 79 01982. This well-known Device contains a combination of helical springs and leaf springs to dampen the shock and to Prevents parts that come into contact with each other from springing back. The damping means are still there relatively expensive. The damping is achieved solely through the action of the springs; she requires a corresponding damping path.

The invention is based on the object of creating a safety device of the type mentioned, in which the shock absorption can be achieved with less effort and with the smallest possible damping path.

This object underlying the invention is achieved by the features in the characterizing part of Main claim solved.

The safety device according to the invention ensures that, in the event of a response, the housing has a Swivel movement about the eccentrically arranged pivot bearing executes, so that a lifting of the Winding shaft and thus also a lifting of the armor follows. This reduces the damping path, because the weight of the tank contributes in part. Simultaneously, and directly simultaneously with At the beginning of this lifting movement, the damping element, which is attached to the Pivot axis is arranged opposite side of the housing. About a corresponding dimensioning The length of the lever allows the damping path to be kept very small. Curved built-in attenuator are not necessary.

According to one embodiment, the securing device can be equipped with an over the outside of the housing bo protruding pressure flange in contact with the damping element. The damping path can then also be determined by dimensioning the Damping element acting pressure flange can be determined.

An exemplary embodiment is explained below with reference to the drawing. It shows

Fig. 1 is a side view of the safety device in the rest position and

F i g. 2 shows a side view of the safety device in the response position.

A stand 1 is fixed in place at the points 2 and 3. The stand 1 carries a housing 6 in which a winding shaft of a tank for opening closures is mounted, with a securing device 4 over the shaft connection 5 is connected to the winding shaft

The actual safety device 4 is of a known type and does not need to be explained in more detail at this point will.

The housing 6 is connected to the stand I via a pivot bearing 7, so that a pivoting movement of the housing 6 around the pivot bearing 7 is possible. On the side facing away from the pivot bearing 7 Housing 6, a pressure flange 8 is provided, which over the outline of the housing 6 protrudes

Furthermore, the stand 1 carries a holding device 9, for example in one piece, in which an in any Wise formed damping element 10 is arranged. Such damping elements are wide Known areas of technology and therefore do not need to be explained in more detail at this point. The task of such damping elements is to dissipate energy by shifting a pressure pin 11 bring about. Such facilities can be mechanical, hydraulic, pneumatic or due of material deformations.

The mode of operation of the device can be seen more clearly from a comparison of FIGS. 1 and 2.

When the safety device 4 arranged in the housing 6 responds, the housing 6 leads a Pivoting movement around the pivot bearing 7, the center of the housing 6 by a certain amount is lifted upwards.

At the same time, the pressure flange 8 presses the pressure pin 11 upwards, whereby the damping is achieved. The amount of travel of the pressure pin 11 and the amount of lifting of the center of the winding shaft are coordinated.

It can also be seen that by appropriately dimensioning the various lever lengths, an easy Varying the response and the size of the damping path can be achieved.

The static load of the actual winding shaft is absorbed by the bottom of the stand 1, with preferably an intermediate strip 12 made of Teflon is provided.

The inclined position of the winding shaft caused by the lifting movement of the winding shaft interferes with the Bearings that accommodate the winding shaft are not, as these bearings are usually called self-aligning bearings are designed, d. H. are able to compensate for slight inclinations of the shaft.

For this purpose 2 sheets of drawings

Claims (2)

Patent claims: 1. Safety device against unintentional unrolling of a rolled up on a winding shaft Panzers for opening closures, especially for Rplltore, in which a ratchet wheel that is non-rotatably connected to the horizontal winding shaft has a ratchet body with a bearing means arranged from a stationary stand via off-center to the winding shaft supported housing, in which the winding shaft is mounted, interacts in a shock-absorbing manner, characterized in that the bearing means of the housing (6) consist of a pivot bearing (7) with a parallel to the winding shaft Axis exist and at a distance from the axis, the damping element (10) is arranged on the pivotable housing (6) 2. Safety device according to claim 1, characterized by one on the outside of the Housing (6) protruding, with the damping element (10) in contact pressure flange (S).