Shutter device

Abstract

The present invention relates to a shutter device comprising a number of shielding slats and operating means, by means of which the shielding slats are displaceable from a position substantially removed from the shielding surface to individual positions distributed over said surface, and pivotable round their longitudinal axis for setting in different angular positions to provide the desired shielding of a surface. The device further comprises two guide rails carrying a number of runner units provided in pairwise arrangement in order to support the two ends of the respective shielding slat in such a manner, that the shielding slats are pivotable relative to the runner units and retainable in said individual positions distributed over the shielding surface. According to the invention the device is provided with retaining means comprising supporting organs on each runner unit and stops provided in each one of the guide rails which stops are so situated in the transverse direction of the respective guide rail that each one of them is in the path of movement of one of the individually placed supporting organs of the runner units and so situated in the longitudinal direction of the respective guide rail that each slat is in its predetermined individual position when the respective supporting organ is resting on the corresponding stop.The present invention relates to a device for adjustable shielding of a surface, as a window or similar, which device comprises a number of shielding slats and operating means, by means of which the shielding slats are displaceable from a position substantially removed from the shielding surface to individual positions distributed over said surface, and pivotable round their longitudinal axis for setting in different angular positions to provide the disired shielding of the surface in question, and further two guide rails, which extend in the direction of displacement of the shielding slats on each side of these, and carrying a number of runner units provided in pairwise arrangement in order to support the two ends of the respective shielding slat in such a manner that the shielding slats are pivotable relative to the runner units, the guide rails comprising means adapted to retain the shielding slats in said individual positions distributed over the shielding surface.There is a more and more increasing need of shielding living quarters as well as places of public resort from a noisy environment, such need especially manifesting itself at nights. On the other hand there is increasing need of a better utilization of the thermal energy in heated rooms where heat losses through surfaces of glass as windows etc. make up a substantial part of the total heat lossesAs a basis for the present invention there is the desire to provide a shielding means in the form of a shutter device with considerable sound and heat insulating properties, by means of which device the shielding degree can be adjusted to the present need.There is no complete solution of the problem in question known in the prior art, which may be due to the difficulties of a technical nature, which have to be overcome in this connection. A great part of the difficulties can be referred to the practical necessity of mounting a shutter device of the characteristics mentioned above at the outside of the surface to be shielded, which results in that the device will be exposed to the inclemency of the weather and will have to be designed in order to meet the requirements of resistance against corrosion etc. Moreover, heavy demands are made upon the stability and reliability of the device because of the applications mentioned above.It is an object of the present invention to provide a device, which fulfills the above mentioned requirements.The object of the invention is obtained by means of a shutter device, in which said retaining means comprising supporting organs substantially provided on each runner unit and supporting organs belonging to said organs and preferably provided in each one of the guide rails, which organs are so situated in the transverse direction of the respective guide rail that each one of them is in the path of movement of the indivudually placed supporting organ belonging thereto and so situated in the longitudinal direction of the respective guide rail that each slat is in its predetermined indiviual position when the respective supporting organ is resting thereon.In abstract form the fundamental idea of the invention can be expressed as providing a design, which firmly retains the slats of the shutter device in their set positions, with the movable parts necessary for change of position of the slats being well protected against weather influences.

Description

Claims

1. A shutter device for adjustable shielding a surface, including a window surface, which comprises a plurality of shielding slats and operating means for individually and collectively positioning the same over the shielded surface, said slats being pivotable about their longitudinal axes for positioning the same in different predetermined angular positions to provide the desired shielding of said surface, guide rails disposed on each end of said slats, and carrying a plurality of paired runner units each connected to a corresponding slat by means of pivoting shafts so that the slats are pivotable relative the runner units, the guide rails provided with means adapted to retain the slats in individual positions distributed over the shielded surface, said retaining means comprising for each slat first supporting means provided on each runner unit and second supporting means provided in each guide rail, the second supporting means being situated in the transverse direction of its respective guide rail such that each is in the path of movement of the individually placed first supporting means and so situated in the longitudinal direction of the respective guide rail that each slat is in its predetermined individual position when the respective first supporting means is resting on the corresponding second supporting means of the rail, said guide rails being substantially closed units each having a single longitudinal slot for said pivoting shafts and providing box-shaped areas in which the runner units are guided, said areas defined by two opposite short walls, each short wall having a plurality of inwardly extending longitudinal grooves, said first supporting means comprising a plurality of projections on the runner units, at least one said projection being provided for each slat to individually position the same in a predetermined groove in the rails, which groove is provided with a stop for the respective first supporting means situated in the groove to hold the corresponding slat in its predetermined position when the supporting means carried by its corresponding runner unit abuts said stop, said operating means being enclosed by the guide rails and comprising a threaded spindle pivotably mounted in each of the two guide rails, on which spindle each of the runner units is connected for longitudinal displacement, said operating means further comprising a bar pivotably mounted in at least one of the guide rails and operatively connected to worm gears displaceable but not pivotable with respect to said bar, which gears are pivotably carried in respective runner units in the guide rails, and sealing means arranged between the guide rails and the slats and between each slat.