GB2185521A

GB2185521A - Window or door assembly

Info

Publication number: GB2185521A
Application number: GB08629194A
Authority: GB
Inventors: Arno Kilian
Original assignee: Carl Fuhr GmbH and Co KG
Current assignee: Carl Fuhr GmbH and Co KG
Priority date: 1986-01-20
Filing date: 1986-12-05
Publication date: 1987-07-22
Also published as: FR2597541B1; GB2185521B; FR2597541A1; DE3601488A1; GB8629194D0

Abstract

A window or door assembly has a movable leaf (6) which is slidable along tracks (11, 12). To close the window the leaf is first slid into position and then moved in a direction normal to the plane of the window, by means of handle (9), to tie in the plane of the adjacent window (7). The movable leaf (8) is then pulled tight against a frame (1) by a member (26) which is displaced down a slot (32) by a driving rod of a latching mechanism operated by handle (9). An edge surface (A) of the member (26) rides onto a cam (34, 35) and causes the member to pivot on a shoulder (28) of a counterclosure member, against the action of a spring (32), to force the leaf perpendicularly to its plane into tight engagement with the frame (1). <IMAGE>

Description

SPECIFICATION Window or door assembly The invention concerns a window or door assembly comprising a window or door leaf fitted with a closure mechanism which includes a driving rod, the driving rod carrying latching members and at least one pull-tight member constructed as an arm which is pivotable in a plane parallel to the driving rod and which cooperates with a cam on the leaf and with a counter-closure member; the arrangement being such that when the driving rod is displaced longitudinally reiatively to the leaf, the pull-tight member engages behind a shoulder ofthe counter-closure member and pivots as a result of also riding onto the cam whereby the leaf is displaced perpendicularlyto its plane relativelyto the counterclosure member and into tight engagement with an adjacent part ofthe assembly.

Such an assembly, which is hereinafter referred to as ofthe kind described, may have the leaf arranged as to be displacable into a parallel "side-tracked" position for sliding past a neighbouring leaf ofthe assembly.

An assembly of this kind is known from DE-A-2227646, in which the pull-tight member serves as a fork-type latch. For this purpose the single-arm fork-type latch is coupled to the end ofthe driving rod. At its free end it has a narrower latching portion which serves to engage behind a latching pin mounted ontheforkarm. The pulling momentis produced by the fact the pull-tight member has, in the region between the latching portion and its pivot, an angled slot which forms the cam and which is entered by a control pin extending from the guard rail. The purpose of this design consists of increasing the pulling range of the pull-tight latch member acting as afork-type latch, in orderto preventthe fitting from being operated wrongly.The resulting design for the purpose of obtaining a sufficiently wide pulling range is to a large extent associated with increased weight and fairly high cost of construction.

The objectofthe invention isto design a driving rod fitting ofthe kind in question for ease of manufacture, in such a way that in addition to easier control ofthe pull-tight member, a compact construction is obtained, without this being at the expense of the pulling distance.

According to the invention in an assembly of the kind described, the pull-tight member is spring loaded to pivotcounterto the pull-tight movement.

As a result of such a design, there is provided an arrangement, which is highly useful and with a spatially small construction. The stability and pulling distance are not impaired. lnparticularthisdesign proves to be advantageous if considerable wind pressure acts on the window ordoor in a parallel side-tracked position. In this position, before the leaf is pulled tight, the pull-tight member is in its catch position as a result of spring loading. If the driving rod is now displaced by means of a handle and driving rod gear, this results in pivoting ofthe pull-tight member, combined with pulling of the door or window leaf frame towards the fixed frame.

If, on the other hand, the movable frame is in its pulled-tight position and the side-tracked position is brought about, then the pull-tight member returnsto its catch position. Spring loading entails the advantage of easier control of the pull-tight member.

In an advantageous construction, a pivot pin of the pull-tight member is guided in a slot in a guard rail of the driving rod, and the cam, which cooperates with an edge section of the pull-tight member, is formed by a side flank of a strip located adjacent to the slot on the guard rail, the side flank facing towards the slot and being provided with a lead-on incline. As soon as the edge section of the pull-tight member impinges on the incline, when the driving rod is being displaced in the direction of closing, then pivoting of the pull-tight member begins at the same time. By then the latching pin on the pull-tight arm has already engaged behind the shoulder ofthe counter-closure member, so that as displacement of the driving rod progresses, the movable frame is pulled tight.The side flankwith the incline 550 long that in the latched position, the edge section of the pull-tight member can be supported. The cam does not need to be produced by slotting the pull-tight member. Furthermore, the guard rail for the pivot pin is only provided with one longitudinal slot which corresponds to the other longitudinal slots in the guard rail.

Advantages for control arise if the edge section is constructed as a convex portion beginning adjacent to the pivot pin.

Furthermore, it proves to bean advantage if the spring loading is obtained byaflatspiral spring,a free end ofwhich abuts against a projecting head of the pivot pin, and which is seated on a square pin of the pull-tight latch member.

In the orderforthe preset catch position ofthe pull-tight memberto be assured at all time, a stop which is supported against the edge of the driving rod slot is provided for limiting the spring-loaded pivot movement.

The invention will now be explained by reference to the accompanying drawings, in which Figure 7 shows a view of a sliding door in its closed position, with an associated fixed door; Figure2 is a section taken on the line ll-ll in Figure 1, i.e. relating to the closed position; Figure 3 is a section corresponding to Figure 2, but relating to the parallel side-tracked position; Figure 4 is also a section corresponding to Figure 2, but in an intermediate position when closing the door frame; and, Figure 5shows is an enlarged section taken on the line V-V in Figure 2.

As shown in Figure 1, a fixed frame is composed of two vertical frame pieces 2,3 and horizontal frame pieces 4,5 which are connected to each other atthe centre by another vertical frame piece 6. In this way it is possible to place a fixed door 7 on the left-hand side ofthe fixed frame 1, and a sliding door 8 on the right-hand side. The latter can be side-tracked parallel to itself out of its closed position, and slid into the position overlapping the fixed door 7.

The sliding door 8 carries on its right-hand vertical frame piece a pivotable handle 9. If the latter adopts its downwardly pointing position, shown in unbroken lines, this corresponds to the closed position ofthe sliding door 8. If the handle 9 is pivoted clockwisethrough 90", then the lower horizontal frame piece ofthe sliding door remains in the adjoining position, while vent brackets 10on the upper frame piece pivot, resulting in the tilted position of the sliding door 8. Further displacement ofthe handle 9 through a total distance of 1800 then leads to side-tracking of the sliding door parallel to itself. The sliding door8 can then be displaced by means oflongitudinal rails 11,12 mounted on the horizontal frame pieces 4,5 ofthefixed frame.

On the slide rail 12 mounted on the lowerframe piece 4 are guided two carriages 14 which are associatedwiththesliding door8, shown in dot-dash lines in Figure 2 and covered by a covering rail 13, each of which carriages 14 has a supporting arm which is pivotable perpendicularly to the rail and is operated by means ofthe door handle 9 through the intermediary of driving rods 15. The latter are located in a groove 16 in the frame ofthe sliding door, and covered by a guard rail 17. In the corner regions ofthe sliding door, the guard rails receive corner pieces on the inside. Each includes a C-section rail 18 in which is guided a flexible push-pull member 19. The latter is joined to the driving rod 15 by rivets 20.

Furthermore, a pivot pin 21 is riveted to the driving rod in the region above the rivets 20. The pivot pin 21 passes through a longitudinal slot 22 in the C-section rail 18and an aligned longitudinaislot23 inthe guard rail 17. In the region of the slot 23, the pivot pin 21 carries a roller 24. The pivot pin 21 extends through a bore 25 in a pull-tight latch member 26 contructed as a double lever. The latter lies flus on the guard rail 17 and is fixed in position bya projecting head 21'of ofthe pivot pin 21, which is of larger cross-section.

One arm 26' ofthe pull-tight latch member carries at its end a latching pin 27 which projects beyond its free end and cooperates with a shoulder 28 of a counter-closure member 29 mounted on the fixed frame. In front of the shoulder 28 is disposed a lead-on surface 30.

On the other lever arm 26" is provided a square pin 31 which projects beyond the front surface of the pull-tight latch member and on which is disposed a flat spiral spring 32. The free end 32' of the latter engages in a peripheral groove 21" in the head 21', and is supported against the head to achieve spring loading ofthe pull-tight latch member 26 in a clockwise direction. In the open position ofthe sliding door8, a pin-likestop 33 limitsthe spring-loaded pivot movement, by the stop 33 abutting against one edge 23' ofthe driving rod slot 23, cf. in particular Figure 3. The stop pin 33 extends in the lever arm 26" of larger area.

The pull-tight latch member 26 has an edge section which is constructed as a convex portion A beginning at the pivot pin 21. This convex portion A cooperates with a cam on the guard rail side. The cam is in the form of a side flank35 with an incline 34, of a strip 36 which is seated on the guard rail 17 adjacent to the longitudinal slot 23 and which is located approximately at the level of the lower end of theslot23intheguardrail 17.

Operation is as follows.

According to Figure 2, the convex portion A is supported against the side flank 35 ofthe strip 36, while the latching pin 27 has engaged behind the shoulder 28 ofthe counter-closure member 29. This meansthatthesliding doorisin its pulled-tight position. If required, more than one of these pull-tight latch members may be associated with the sliding door.

If the sliding door is moved into its parallel side-tracked position according to Figure 3, this meansthatthedriving rod travels in an upward direction. The latching pin 27 is then located above the shoulder 28 of the counter-closure member, while the convex portion A has moved away from the side flank 35 of the strip 36. The spiral spring 32 then effects pivoting ofthe pull-tight latch member 26 into the position according to Figure 3, which pivot movement is limited byte stop pin 33 which abuts against the edge 23' ofthe slot 23. Thus the strip 36 lies in the path of the convex portion A ofthe pull-tight latch member 26.

Closure of the sliding door 8 requires displacement of the frame into its right-hand end position. Therefore the handle 9 must be pivoted anticlockwise outof its upperposition to point downwards, at the same time pulling the sliding door parallel to its plane towards the fixed frame.

Even if considerable wind pressure should act on the sliding door8,sothatthereisstill a certain gap between fixed frame and sliding door, the sliding door is securely closed. This is achieved by the fact thatthe pull-tight latch member 26 abuts by its convex portion A againstthe incline 34 ofthe strip 36 and is progressively pivoted anticlockwise. Atthe same time the latching pin 27 travels overthe inclined surface 30, and during further downward movement of the driving rod and hence the pull-tight latch member 26 passes behind the shoulder 28, combined with further displacement of the pull-tight latch member to produce a pulling movement, so that after the handle has been turned fully into the closed position shown in unbroken lines, the position according to Figure 2 is reached.

Claims

1. Awindowordoorassemblycomprisinga window or door leaf fitted with a closure mechanism which includes a driving rod, the driving rod carrying latching members and at least one pull-tight member constructed as an arm which is pivotable in a plane parallel to the driving rod and which cooperates with a cam on the leaf and with a counter-closure member; the arrangement being such that when the driving rod is displaced longitudinally relatively to the leaf, the pull-tight member engages behind a shoulder of the counter-closure member and pivots as a result of also riding onto the cam whereby the leaf is displaced perpendicularly to its plane relatively to the counterclosure member and into tight engagement with an adjacent part of the assembly; wherein the pull-tight member is spring-loaded to pivot counterto the pull-tight movement.

2. An assembly according to claim 1, wherein a pivot pin ofthe pull-tight member is guided in a slot in a guard rail ofthe driving rod, and the cam, which cooperates with an edge section of the pull-tight member, is formed bya sideflankof a strip located adjacentto the slot on the guard rail,thesideflank facing towards the slot and being provided with a lead-on incline.

3. An assembly according to claim 2, wherein a stop of the pull-tight member engages an edge ofthe slot for limiting the spring-loaded pivotal movement.

4. An assembly according to claim 2 or claim 3, wherein the edge section is constructed as a convex portion beginning adjacent to the pivot pin.

5. An assembly according to any one of the preceding claims, wherein the spring loading is effected by a flat spiral spring, a free end of which abuts against a projecting head of a pivot pin ofthe pull-tight member and which is seated on a square pin of the pull-tight member.

6. Awindow or door assembly substantially as described with reference to the accompanying drawings.