More Particularly For Shade Producing Means

All these measures however involve substantially more technical complexity and greater

costs owing to the additionally provided drive means, there also being a sacrifice as regards the appearance of the device. A further point is that there is an increased need for servicing and an increased proneness to failure, since such roller blind drives, for instance for shades, are conventionally mounted on the exterior of buildings.

Accordingly a sufficient thrust force will be exerted on the roller blind member in the course of being unwound so that the blind's unwinding action will be reliable even at extremely small slopes of the oblique area to the horizontal of for example 5. The features of mechanical design necessary for this are simple and may be adopted at low cost. The unwinding operation takes place without any trouble both with the roller blind member completely wound up and also with it practically fully unwound.

The guide shoe element arrangement preferably comprises at least two guide shoe elements similar to disk cams, which are arranged in the axial positions of the marginal portions of the winding shaft, there being if desired in the case of long winding shafts additionally at least one third guide element for supporting and guiding the axial middle portion.

A structure with a simple mechanical design for acting as a suitable slope setting means may be such that the guide tracks, constituted by guide rails, are pivotally mounted on holding elements more particularly in the form of holding plates, rows of holes or slots being provided on the holding elements for adjustment of the slope angle of the guide tracks so that a simple bolt, rivet or screw means may be employed for fixing the guide rail at a predetermined angle of slope.

In this case the guide shoe elements of the guide shoe element arrangement are arranged clear of the ends of the roller blind in the same and also contribute to the mechanical strength of the roller blind casing. The guide shoe elements may then with advantage open at a through slot in the roller blind casing so that there is a continuous guide action for the roller blind member as far as such through slot.

One of the two holding means is preferably linked via a rotary bearing with the winding shaft and the other holding means is connected in such a manner as to prevent relative rotation with the drive shaft or the housing of a drive motor arranged within the winding shaft.

by: erin

POST COMMENT

What Are Best Practices For Developing Leaders From Within The Ranks? Throwing A Successful Auction Fundraiser Choose Your Direct Mailing Company Wisely Heres How It's Time To Play Keeping A Tight Hold On Your Money Time To Think About Essential Holiday Stock For Your Store How To Choose Best Quality Woven Labels Seek Adventure In Barcelona The 5 Important Things To Be Discussed When Acquiring A Second Hand Car Cheap Nike Shoes Mat Only Glanced At Him Exploring Pillow Covers: An Inexpensive Way To Spice Up A Room After A Consultation He Approached Jordan Shoes Remote Control Model Car By Using The Ability Source Is Frequently Classified As Two Kinds