IL30007A - Sliding door or window - Google Patents

Description

SLIDING SOOB OR WINDOW „ The invention relates to a sliding door or a sliding window of the kind with at least one sliding sash which' runs' on a horizontal rail. The sash has . a frame with a U-shaped cross section, the flanges of the U embracing and being sealed by a sliding seal to a stationary frame which incorporates the running rail.

Known sliding sashes of this kind usually have rollers which roll along a horizontal lower rail. The. . 1 I rail itself has a runnin surface which is either flat or sometimes has a shaped cross section, in which case - ■ the rollers have corresponding cross sections. The rollers are mounted within the U of the sash frame, and the U embraces the horizontal lower rail, and embraces the corresponding parts of the sides and upper part of the stationary frame, the U being sealed against these parts by means of a sealing strip inserted in the inner surface of each flange of the U near the edge.

However this method of sealing is often insufficient to prevent penetration of air draughts and water. This is due to imperfect guiding of the sliding sash. There are always certain constructional tolerances and the result is that the two seals do not both make- contact. with the rail. Either the inner or the outer seal makes contact with the rail and with the other.parts'' of the stationary frame. ' 1 ' . ' According to the present invention the sealing of a sliding door or window of the kind described is improved in that the running surface of the rail is inclined at an angle of between 3 and 10 degrees to the horizontal, sloping This..slope has the effect that the sash frame is urged transversely to its plane and a good seal is made between · the flanges on one side of the sash frame and the stationary frame.

The slope is preferably inwards , that is to say sloping downwards towards the inside of the door or window, so that it is always the outer flange which is thrust into sealing contact with the rail or other parts of the ■ stationary frame .

In the usual case in' which the sash frame, has rollers which run on the rail, the rollers may have cross sections corresponding to the slope of the running surface of the rail or, even better, the rollers can have rounded running surfaces One example of a sliding door having two sliding sashes and constructed in accordance with the invention is illustrated in the. accompanying drawings, in which :- Figure 1 is a vertical section; and, Figure 2 is a horizontal section.

The sliding door has two horizontally slidable sashes 1 and 2. A stationary frame of the door has two running rails 4-, one for each of the two sashes. However the invention is equally applicable to doors and windows which have only one sliding sash. Each sliding sash 'is held in a sash frame 5» "the edges Of -which have open U-shaped cross sections 6. The flanges of the U embrace the running rails '4, against which .they are sealed by sealing strips 7 » 7 ' · Running rollers 8 are mounted between the flanges of the U sections 6.

The running surface 9 of the rail is inclined at an angle cC to . the horizontal, sloping inwards. Consequently thrust the- sash inwards, so that the outer sealing strip 7 is constantly thrust against the rail 4-, The angle c£ is between 3 and 10 degrees. If this angle were less than this the force P would no longer act effectively, whereas on the other hand if the angle is too great the sealing strip would be thrust too strongly against the rail and the sash would not slide easily.

The sealing strips ¾ 7' preferably consist of synthetic plastic brushes inserted in a groove in the flange of the U shaped cross section 6. In order to reduce the rate of wear on these brushes, each of the two horizontal brush strips is interrupted at two or more places, where solid plastic gliders 10, which can for. example be ma'de of nylon, are mounted.

.. The rollers 8 can be mounted in the U shaped cross section 6 in an desired way. The running surface of the roller is prefe ably rounded off. As an alternative the sliding sash can if desired be suspended from an upper rail which has a sloping running surface. In this case however the cross section of the frame must be shaped differently, at least in regard to the upper horizontal part.

The running rail can. if desired be of one piece with the outer frame 3, or these two parts can be separate, the rail being mounted on the outer frame. The vertical slide rails and the upper horizontal rails serve merely as guides and for providing the seal. Furthermore of the two running rails, that is to say the two lower rails, only the inner one need extend ove the full width of the door or window. The outer rail, need only be long enough 'to allow .sash need no¾ be displaced oyer the full width of the ^ : door i ;.but only enough to allow cleaning of the outer . " surface of the pane. , An- advantage obtained in this way,, that is to say by extending the outer rail only part of the way across is that the channel formed between the .two rails is open, allowing accumulated rain water' to escape. A ' ■ further advantage is that if separately mounted rails are . used, :as represented in Figures 1 and 2, the shorter rail ; economises material.

Claims (3)

1. A. sliding door or sliding window with at least, one sliding sash running on a horizontal rail:, the sash having a frame with a U-shaped cross section the flanges of which embrace and are sealed by a slidin seal to a stationary frame incorporating the running rail, 'wherein, the running surface of the rail is inclined at an angle of between and 10 degrees to the horizontal, transversely with respect to the plane of the frame, so that the- sash, frame is urged transversely to its plane and a good seal is made between the flanges on one : side of the sash frame and the stationary frame. '

2. :.2. A sliding door or window according to claim Ι,.ίη which the running surface of the rail slopes downwards towards the inner side of the door or window.

3. , A sliding door or window according to claim 1 or claim 2, "in which the sash frame has rollers with rounded running surfaces which run on the rail.- 4-, A sliding door o window according to any one of the preceding claims, in which the running rail extends along .the bottom edge of the sash. .5· A sliding door according to claim 1, substantially as described v/ith reference, to the accompanying drawings. . ' .. \ : . P. O. Box 1169,* TH v i v v Attorneys for Applican t