GB2145768A

GB2145768A - A window hinge

Info

Publication number: GB2145768A
Application number: GB08331568A
Authority: GB
Inventors: Friedrich Forster
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-09-01
Filing date: 1983-11-25
Publication date: 1985-04-03
Also published as: GB2145768B; GB8331568D0; DE8325105U1

Abstract

A hinge for an outwardly opening window comprises a frame attachment bar 3 to be fitted on the fixed or outer frame 1 of the window and a moving attachment bar 4 to be fitted to a moving frame 2 of the window. A first link 5 is pivoted at respective end portions on the two bars 3, 4. A second link 6 which is longer than the first link 5 and is also pivoted at respective end portions on the two bars 3, 4 but at a distance from the first link 5 the latter having an angled middle portion 11 such that (a) in the folded condition of the quadrilateral arrangement (corresponding to a shut position of the window) an outer edge of the end portion of the first link 5 pivoted on the moving attachment bar 4 is parallel to the moving attachment bar 4 and the end portion of the first link 5 pivoted on the frame attachment bar 3 is generally parallel to the second link 6, and (b) in the unfolded condition of the quadrilateral arrangement (corresponding to an opened position of the window) the first link 5 abuts against a stop 15 provided on the moving attachment bar 4 with the inner edge 13 of the end portion of the first link 5 pivoted to the moving attachment bar 4 disposed within the volume between planes containing the inner and outer 14 edges of the moving attachment bar 4. <IMAGE>

Description

SPECIFICATION A window hinge The present invention is with respect to hinges for windows and more specially although not exclusively to a hinge for an outwardly opening window of the sort having a frame attachment bar to be fitted on the fixed or outer frame of the window and a moving attachment bar to be fitted to a moving frame of the window, a first link pivoted on the two said bars, a second link which is longer than the first link and is pivoted on the two said bars at a distance from the first link in such a way that in the folded up condition of the articulated quadrilateral formed by the two said bars, by the first link and by the second link the moving attachment bar is parallel to the fixed frame attachment bar and in the unfolded condition of the said quadrilateral the frame attachment bar. is hinged outwards so as to be generally normal to the frame attachment bar with the end of the moving attachment bar nearest to the fixed attachment bar at some distance from an outer edge of the fixed attachment bar.

Known hinges of this sort may be used for windows designed for turning about an upright axis or about a level axis at the top of the window in relation to the fixed frame.

As far as possible a window is to be water and air-tight when shut. Furthermore the fixed frame and the moving frame of the leaf of the window are to be as narrow as possible so as keep out as little light as possibly. Lastly the leaf of the window is to be readily opened and shut so that the hinges have to be designed for this purpose rather than being designed for general use. A further point is that such hinges are to be able to be produced with good workmanship but at a low price so that they may be matched to the different forms of sections of which the window moving and fixed frames are made.

One purpose of the present invention is that of designing a window hinge of the sort noted hereinbefore so that it has as many of the properties noted as possible, even although some of them are antagonistic to each other.

More specially, the hinge in keeping with the present invention is to be compact, is to have a high load supporting effect and in the shut position of the window is to be as narrow as possible. Furthermore, in the opened position of the window there is to be no chance of damage to the moving frame or the seal thereon by running up against the fixed window frame.

For effecting these and other purposes a hinge for an outwardly opening window having a frame attachment bar to be fitted on the fixed or outer frame of the window and a moving attachment bar to be fitted to a moving frame of the window, a first link pivoted on the two said bars, a second link which is longer than the first link and is pivoted on the two said bars at a distance from the first link in such a way that in the folded up condition of the articulated quadrilateral formed by the two said bars, by the first and by the second links the moving attachment bar is parallel to the frame attachment bar and in the unfolded condition of the said quadrilaterial the frame attachment bar is hinged outwards so as to be generally normal to the frame attacment bar with the end of the moving attachment bar nearest to the fixed attachment bar is at some distance at an outer edge of the fixed attacment bar, is characterized in that the first, shorter link is made with such an angled form in its middle part that in the shut position of the window an outer edge of the part, pivoted on the frame attachment bar, of the first link is parallel to the moving bar and the part, pivoted on the fixed bar, of the first link is generally parallel to the second link and in the opened out position of the window the first link is rested against a stop with the inner edge of the part, pivoted on the moving attachment bar, of the first link within the area limited by and within the inner edge and the outer edge of the moving attachment bar.

Preferably the moving and fixed attachment bars are between 30 and 40 mm wide. In the shut condition of the window the distance between the inner edge of the fixed attachment bar and the outer edge of the moving attachment bar is about 40 to 50 mm. The joints used as connections between the first, short link and the second long link on the one hand and the fixed attachment bar on the other are placed as near as possible to the inner edge of the fixed attachment bar. Furthermore, the joints forming connections between the first and second links and the moving attachment bar, are placed as near as possible to the outer edge of this bar. In this way it is possible to make certain that the width of the hinge in the shut position is as small as possible while at the same time the contact faces between the two links and the fixed attachment bar and between them is as great as possible.This gives a useful effect, more specially with windows having an upright hinge axis.

To make certain that the friction between the links, the fixed attachment bar and the moving attachment bar is the same in nature and amount, it is possible to have layers of low-friction material between the pivoted end parts of the links on the one hand and the fixed and moving attachment bars on the other. These low-fraction layers may be made of polyamide or polyacetal with or without PTFE embedded thereon. In the event of the moving part or leaf of the window hinging about a level axis, the low-friction material may be designed for use as a braking material as well, and to make possible adjustment of the braking effect, it is possible to have flatheaded, screw bolts in the short link and the long one so that the layers may be forced adjustably against the fixed attachment bar.

An account will now be given of one working example of the invention using the accompanying figures herein.

Figure 1 is a plan view of a window hinge in keeping with the present invention.

Figure 2 is a sectioned view taken through a frame section and through a section of the moving part of the window or leaf, together with a hinge between them.

In the invention the moving part of a window has hinges at the two ends of its top edge for hinging of the said part about a level axis in relation to the fixed frame or the hinges are placed at the top and lower ends of one side of the frame for hinging about an upright axis.

As may be seen from Fig. 1 a window hinge has a frame attachment bar 3 to be screwed onto a section 1 of the window frame and a moving attachment bar 4 to be screwed onto the section 2 forming part of the moving part or leaf of the window.

The moving section 4 is joined up by way of a short link 5 and a long link 6 with the fixed frame bar 3. In Fig. 1 the hinge will be seen in a middle position, in which the moving section 4 is at an angle of roughly 45 to the fixed bar 3.

The moving bar and the two links are furthermore to be seen in the shut position, in which case they are marked 4', 5' and 6'.

Lastly the moving bar and the short link are to be seen in opened out condition, same then being marked 4" and 5".

The middle part of the short link 5 has such an angled form in its middle part at 11 that in the shut position the part, pivoted on the moving bar 4, of the short link 5 is parallel to the moving bar 4 in the shut position of the window and the part, pivoted on the bar 3, of the short link 5 is generally parallel to the long link 6. On opening the window the short link 5 comes up against a stop 1 5 on the moving bar 4 and the inner edge 1 3 of the part, pivoted on the moving bar 4, of the short link 5 takes up a position within the part between the inner edge and the outer edge 1 4 of the moving bar 4.This makes certain that on opening the hinge the overlapping part of the moving bar and more specially the seal 25 thereon are not forced against the inner edge 1 3 of the short link 5 and so damaged.

In the opened position of the moving bar 4" the inner edge 13" of the short link 5" is so lined up with the outer edge of the moving bar 4" that even the covering part of the moving bar and the seal 25 fixed thereto are not forced against this inner edge 13". If necessary the opening necessary for the sealing strip 25 to be put in place may be made somewhat wider.

Low-friction layers 1 6 and 1 7 or pads are hinged onto the fixed frame bar 3 together with the links 5 and 6. To make certain that the low-friction layers are moved with the links 5 and 6, they have catches on their sides next to the links 5 and 6, the catches fitting into holes 1 8 machined in the links 5 and 6. Using short screw bolts 23 and 24 with flat heads, the low-friction layers may be forced to a greater or lesser degree against the fixed bar 3 so that the braking force may be changed to be in line with needs.

As will be seen more specially from Fig. 2, the inner edge of the fixed bar 3 and the outer edge of the moving bar 4 are bent at a right angle so that stop rails 1 9 and 20 are formed. The stop rail 1 9 of the fixed section is forced against the overlapping flange of the frame section, whereas the stop rail 20 of the moving bar is forced against the overlapping flange of the moving section.To make certain that the attachment screws, to which the fixed bar and the moving bar are fixed to the fixed section in the one case and to the moving section in the other, are not acted upon by shear forces, there are catches or embossed structures 21 and 22 on the fixed bar 3 and the moving bar 4, such catches running out of the plane thereof and being placed against the side wall of channels running in the length direction of the moving or fixed section. The stop rails 1 9 and 20 together with the catches or heads 21 and 22 running out from the plane of contract take up generally all the forces acting on fixed bar and the moving bar so that the screws on the bars are generally freed of all shear forces.The fixed attachment bar and the moving attachment bar are best made of 22 mm thick steel sheet and the catches 21 and 22 or heads are embossed and placed at such a distance from the stop rails 1 9 and 20 that they are in line with the form of the fixed frame section 1 and the moving frame section 2. It is more specially when the section of the fixed frame is hollow and made of synthetic resin that the fixed bar 3 has to be backed up by washer means. The fixed bar 3 and the moving attachment bar 4 with their stop rails 1 9 and 20 and their catches 21 and 22 or heads are to be placed with as little play as possible between them and two lengthways walls of the fixed section 1 and the moving section.

The stop 1 5 functioning with the short link 5 is best formed by an end edge of the stop rail 20 of the moving bar 4, same functioning with a shoulder 26 that is fixed on the inner side 1 3 of the short link 5.

To make for simple and quick assembly of the window hinge the attachment holes 27 are at least in part in the form of slots running in the length direction of the fixed bar 3. This makes possible adjustment of the bar 3 as part of the fixing operation before the screws are done up tight so that it is moved in the length direction and the hinge may be lined up exactly within the window frame. For assembly purposes there is furthermore at least one stop 28 at the end edge of the moving attachment bar 4, such stop running out of the plane of contact of the moving bar 4. The stop however may be in the form of a bent lug fitting into a groove in the moving section.

Claims

1. A hinge for an outwardly opening window having a frame attachment bar to be fitted on the fixed or outer frame of the window and a moving attachment bar to be fitted to a moving frame of the window, a first link pivoted on the two said bars, a second link which is longer than the first link and is pivoted on the two said bars at a distance from the first link in such a way that in the folded up condition of the articulated quadrilateral formed by the two said bars, by the first and by the second links the moving attachment bar is parallel to the frame attachment bar and in the unfolded condition of the said quadrilaterial the moving attachment bar is hinged outwards so as to be generally normal to the frame attacment bar with the end of the moving attachement bar nearest to the fixed attachment bar is at some distance at an outer edge of the fixed attacment bar, characterized in that the first, shorter link is made with such an angled form in its middle part that in the shut position of the window an outer edge of the part, pivoted on the frame attachment bar, of the first link is parallel to the moving bar and the part, pivoted on the fixed bar, of the first link is generally parallel to the second link and in the opened out position of the window the first link is rested against a stop with the inner edge of the part, pivoted on the moving attachment bar, of the first link within the area limited by and within the inner edge and the outer edge of the moving attachment bar.

2. A window hinge as claimed in claim 1 wherein joints joining the first link and the second link with the fixed attachment bar are placed as near as possible to an inner edge of the fixed attachment bar and joints forming a connection between the first and second links with the moving attachment bar are placed as near as possible to an outer edge of the moving bar.

3. A window hinge as claimed in claim 1 or claim 2 having layers of low-friction material in the end parts, pivoted on fixed bar, of the first link and the second link on an inner side thereof next to the fixed bar.

4. A window hinge as claimed in claim 3 wherein the low-friction layers have heads on sides thereof next to the first and second links, said heads fitting into holes in the first and second links.

5. A window hinge as claimed in any one of claims 1 to 4 wherein at an inner edge the fixed bar and at an outer edge the moving attachment bar are bent over through 90 for forming a stop rail.

6. A window hinge as claimed in claim 5 wherein the stop rail of the fixed bar is designed running out of the plane of contact of the fixed bar, the stop rail of the moving bar running away from the plane of contact.

7. A window hinge as claimed in any one of claims 1 to 6 wherein on a straight line running parallel to edges of the fixed bar and the of the moving bar there are at least two lugs running out of the plane of contact of the said bars.

8. A window hinge as claimed in any one of claims 4 to 6 having flat headed screw bolts placed on the two said links for adjustment of the braking force of the low-friction layers.

9. A window hinge as claimed in any one of claims 1 to 8 having attachment holes in said fixed bar, said holes being at least in part in the form of slots running in the length direction of the fixed bar.

1 0. A window hinge as claimed in any one of claim 1 to 9 wherein at an end edge thereof the moving bar has at least one stop running out of the contact plane.

11. A window hinge as claimed in claim 10 wherein said stop is formed by a bent over edge part of the moving bar.

1 2. A window hinge as claimed in claim 1 substantially as described hereinbefore with reference to and as illustrated in the accompanying Figs. 1 and 2 herein.