FITTING FOR A REVERSING WINDOW

Abstract: Fitting for a reversing window where one end of the sash (7) being guided in grooves (6) in the window frame (2), one end of a brace rod (1) thereby being supported in a first frame securement (10) near one end of the frame (2), a first telescopic arm (5) of a telescopic rod (3) being supported in a second frame securement (11) near the other end of the frame (2), the other end of the rod (1) being supported on a second telescopic arm (4) of the telescopic rod (3), one end of the second telescopic arm (4) being supported in a sash securement (13) substantially in the center of gravity of the sash (7), the sash securement (13) thereby being forced along a substantially rectilinear path (9) of displacement when rotating the sash (7), thereby allowing the sash (7) to be reversed substantially 180 DEG , the window frames (2) comprising the grooves (6) thereby being the horizontal or the vertical frame portions.

Description: Fitting for a reversing window The present invention is related to a fitting for a reversing window, according to the preamble of the claims. Fittings for reversing windows exist in a number of embodiments, based on partly quite different principals. The reversing as such, of a window sash is to be performed substan- tially in the same way. A sash mounted on a reversing fitting at each side preferably is to be rotated around a horizontal axis in the center of gravity of the sash. It is an option that the rotation axis of the sash is displaced during reversing in a substantial horizontal and rectilinear plane out from the window frame and back again. Claims for such fittings is among other that the reversing of the window sash from a vertical closed position to a position where the outside of the window can be cleaned from in- side, may be performed with as small and continuous operation force as possible. There also should not be any need to provide extra force to start the reversing from an outer position, nor so from any positions in between. The reversing fittings are to be used for windows with different window frame heights. This implicates that different embodiments should be delivered in many different variants. Some embodiments cover several different window frame heights by variations of the distance between the rotational axis and the center of gravity for the sash and to place the securement points along the window frame at different places. This, however, bring problems with overturn, e.g. that the sash can damage the window frame, the sash as such or the wall immediately outside the window. If the rotational axis cannot be placed in the center of gravity of the sash, this may cause inbalance, uneven displacement and variation in the force necessary to operate the window. Some embodiments have as a result of the principal design, problems with jamming when the fitting is turned in the outer position, e.g. when the sash is passing through the horizontal position. It is advantageous that there is no need for cutting grooves in the window frame and/or the sash, which are visible when the window is closed. Furthermore, the fitting as such should not be visible when the window is closed. It is normally claimed that reversible windows should be lockable in the position for cleaning the windows and are equipped with automatic latches enabling ventilation with no danger that small children could fall out or open the window further. It is also desired to provide a possibility to lock the sash in one or more ventilation positions. The fire fighting authorities and other claim on the other side that the window also should provide an escape route, and such latches therefore must be designed and placed in such a way that they easily can be operated. Many of the known embodiments fulfil one or more of these claims with locking devices integrated in the fitting at one side of the window. This, however, means that the window and also the fittings are exposed to inclined loads and also that the fittings on the right and the left-hand side are different. Among others, based on the above mentioned, all known fittings are delivered in pairs where right and left fittings are different. Together with a large number of sizes and variations adjusted to different heights of window frames and sash weights, this lead to increased costs connected with the manufacturing and the logistics for the product as such. The above mentioned disadvantages with the known embodiments are avoided and defined goals are achieved with the fitting according to the present invention as defined with the features stated in the claims. The fitting according to the invention provides a substantially optimized operation for the user as rotation of the sash may be performed without use of large forces and without any tug or sudden force. The bearing and securement of the fitting in the upper and lower portion of the window frame provide maximum distance between the securements. Further, the fitting covers large variations in window frame heights in such a way that production and storing are substantially simplified. The securement points of the fitting to the window frame and the sash have the same position in relation to the ends of the win- dow frame and the middle axis of the sash for different window frame heights. With the fitting according to the present invention a mechanism is provided where a window may be turned fully 180° and gives the impression of a closed window. This may be uses in connection with light dampening windows to be use in one position during summer and in opposite position during winter. The drawing discloses in figure 1 schematically the principal behind the fitting according to the present invention with its movement from the closed position of the window to its horizontally open position, whereby further rotation of the window brings the fitting correspondingly in return, figures 2- 5 disclose a sideview of the fitting according to the invention, secured to the sash and the frame, with the window closed as well as in three different open positions, figure 6 discloses a window with the fitting in a sideview and suggests adjustment possibilities of the fitting for the use in windows having different heights, figures 7-9 disclose three different embodiments for how the fitting principally may be adjusted for the use in different window frame heights, figure 10 discloses another embodiment of the window fitting according with the window in a normal closed position and figure 11 discloses the sash of figure 10 where the sash has been turned fully 180°. The fitting comprises a brace rod 1 adapted for support in an upper window frame securement 10 at the upper end of the frame 2, a telescopic brace rod adapted for support in a lower window frame securement 11 near the lower end of the frame 2 and a glider 8 adapted for support in the upper end of the sash 7 and adapted to slide in a vertical groove 6 in the frame 2. The upper end of the upper telescopic arm 4 is supported in a sash securement 13 preferably in the center of gravity of the sash 7. Identical fittings preferably may be used on right and left hand side, figure 4 discloses one side. If the brace rod 1 and the telescopic arm 3 would be displaced to the left on the figure instead, the sash securement 13 would have been following an identical path 9 of movement inverted around a vertical line through the window frame securements 10 and 11. The telescopic arm 3 comprises a lower 5 and an upper 4 telescopic arm. The brace rod 1 is supported on the upper telescopic arm 4 in a rotational securement 12. The telescopic arm 5 can be displaced in the telescopic arm or opposite as long as the brace rod 1 can be supported on the upper telescopic arm 4, for example in a not quite closed structure as disclosed in figure 8. The entire weight of the sash is transferred from the upper telescopic arm 4 to the brace rod 1 and further to the win- dow frame 2. The brace rod 1 is exclusively exposed for tensile forces whereas the upper telescopic arm 4 is exposed for pressure forces as well as torque forces. The lower telescopic arm 5 is exposed for torque forces as the lower end of the upper telescopic arm 4 is forced towards the telescopic arm 5 and the upper end of the lower telescopic arm 5 is forced towards the telescopic arm 4. When the lower end of the sash 7 is rotated outwardly, the brace rod 1 will pivot around the upper frame securement 10. The sash 7 pulls the upper telescopic arm 4 out of the lower telescopic arm 5 until the sash 7 is in a substantially horizontal position. The upper end of the sash 7 is quided downwardly in the groove 6. The support of the upper telescopic arm 4 in the sash 7 is moved along a substantially rectilinear, horizontal displacement path 9. By further movement of the sash 7 downwardly, the telescopic arm 4 again is guided in the telescopic arm 5 until initially upper end of the sash 7 is situated near the lower end of the frame 2 and the initially lower end of the sash 7 is situated near the upper end of the frame 2. The relatively rectilinear shape of the displacement path 9, together with the positioning of the sash securement 13 in the center of gravity of the sash, give a measure for the manageability of the sash. The fitting according to the invention comprises therefore a system of brace rods with two fixedly supported rods, namely the rod 1 and the telescopic rod 3, supported in respectively the upper frame securement 10 and the lower support securement 11, as well as a third rod, the sash 7 of which the one end is forced to a vertical movement and is supported in the sash securement 13 on the upper telescopic arm 4. Each production variant of the fitting is covering a large variation of window frame heights. By installation the geometry 5 of the fitting is adjusted as the path 9 of displacement is such scaled that it is optimized to the frame height in question. When adjusting the fitting, the distance between the upper frame securement 10 and the support 12 and as well the distance between the support 12 and the sash securement 13 is ad- ιo justed. Figure 6 discloses a principal embodiment of the fitting with a number of holes along the rod 1 and along the upper telescopic arm 4, providing possibility for a stepwise adjustment of the fitting to seven different frame heights. By in- i5 creasing the frame height for example with 50 mm, the two next corresponding holes are used in such a way that the mentioned distances are increased proportionally. The distance between the lower frame securement 11 and the sash securement 13 is automatically adjusted as the two telescopic arms are displaced 2o continuously in relation to each other. The adjustment of the fitting may be done stepwise as disclosed in figure 6, or one or both distances may be regulated continuously. Figure 7 discloses a telescopic arm 3 where the support 12 may be displaced and fixed continuously to the upper telescopic 25 arm 4. Figure 8 discloses a telescopic arm 3 where the support 12 may be displaced stepwise as a stud or such may be placed in one of the house in the upper telescopic arm. Figure 9 discloses a telescopic arm 3 where the support 12 is fixedly secured to the upper telescopic arm 4 and regulation of the dis- 30 tance between the securement 12 and the sash securement 13 is achieved due to the sash securement 13 being arranged on a special element 14 displaceable along and securable to the upper telescopic arm 4. As the rod 1 only can be exposed to tension forces, the 35 rod itself may be designed in a special way, such as in the shape of a flat-bar steel, a band, a wire or such having sufficient tensile strength, the flexural strength however may be low. In a special embodiment of the fitting according the invention, the telescopic arm is secured in the upper frame securement 10 and the rod is secured in the lower frame securement 11. The frame then will assume the weight of the entire window as pressure and correspondingly has to be designed for this. The path 9 of displacement for the sash securement 13 then will have a corresponding horizontal path, mirrored to the horizontal line. With the fitting according to the present invention, there is no need for milling or cutting out parts of the frame or the sash to give room for the fitting. The horizontal distance between the vertical parts of the frame 2 and the sash 7 is very small and the fitting according to the invention will be considered as a hidden fitting from the outside. The fitting according to the present invention also may be use 90° in relation to the disclosures in the drawing, the groove 6 thereby being arranged in the horizontal parts of the window frame, the weight of the window by turning thereby being taken up by the upper and the lower horizontal grooves 6, al- lowing the window to be reversed around a vertical axis.

Claims: Patent Claims 1. Fitting for a reversing window where one end of the sash (7) being guided in grooves (6) in the window frame (2), CHARACTERIZED in one end of a brace rod (1) being supported in a first frame securement (10) near one end of the frame (2), a first telescopic arm (5) of a telescopic rod (3) being supported in a second frame securement (11) near the other end of the frame (2), the other end of the rod (1) being supported on a second telescopic arm (4) of the telescopic rod (3), one end of the second telescopic arm (4) being supported in a sash securement (13) substantially in the center of gravity of the sash (7), the sash securement (13) thereby being forced along a substantially rectilinear path (9) of displacement when rotating the sash (7), thereby allowing the sash (7) to be reversed substantially 180°, the window frames (2) comprising the grooves (6) thereby being the horizontal or the vertical frame portions . 2. Fitting according to preceding claims, CHARACTERIZED in the securement of the telescopic rod (3) to the rod (1) is adjustable stepwise or continuously on the rod by installation for adjustment to the window size. 3. Fitting according to preceding claims, CHARACTERIZED in the securement of the telescopic rod (3) to the rod (1) may be adjusted stepwise or continuously on the telescopic rod (3) during installation for adjustment to the window size. 4. Fitting according to claim 1, CHARACTERIZED in a support (12) being fixedly secured to one telescopic arm (4) al- lowing adjustment of the distance between the securement (11) and the sash securement (13) by connecting the sash securement (13) on a special element (14) displaceable along and securable to the other telescopic arm (4) .

Inventors: FLO STEINAR, FLO, STEINAR
Applicants: FLO STEINAR, FLO, STEINAR
Application year: 1999
Main classification: E05D15
IPC codes: E05D15