Leaf unit of a scissor mechanism of a fitting and method for installing such a leaf unit

Abstract

A leaf unit of a scissor mechanism of a fitting for a leaf of a window or of a door, insertable into a C-shaped leaf groove in the rebate of a leaf profile of the leaf is provided. The leaf unit includes a scissor guide fastenable on the leaf and a scissor rod moveable relative to the scissor guide in the operating state. The scissor rod is movable between a closed position and a tilt position relative to the scissor guide in the operating state. The scissor guide and the scissor rod are pre-fixed for insertion into the leaf groove in a pre-installation position which is between the closed position and the tilt position.

Claims

1. A leaf unit of a scissor mechanism of a fitting for a leaf of a window or of a door, insertable into a C-shaped leaf groove in a rebate of a leaf profile of the leaf, comprising a scissor guide fastenable on the leaf, and a scissor rod movable relative to the scissor guide in an operating state; wherein the scissor rod is movable between a closed position and a tilt position relative to the scissor guide in the operating state; and wherein the scissor guide and the scissor rod are pre-fixed for insertion into the leaf groove in a pre-installation position which is between the closed position and the tilt position.

2. The leaf unit according to claim 1, wherein the pre-installation position is a middle position between the closed position and the tilt position.

3. The leaf unit according to claim 1, wherein the pre-fixing is realized as a positive locking connection between the scissor guide and the scissor rod.

4. The leaf unit according to claim 3, wherein the positive locking connection comprises at least one fixing journal and one journal opening to engage the fixing journal.

5. The leaf unit according to claim 4, wherein the fixing journal is shearable in response to a relative movement of the scissor rod in relation to the scissor guide.

6. The leaf unit according to claim 5, wherein the fixing journal comprises a predetermined breaking point.

7. The leaf unit according to claim 1, further comprising a mounting head comprising a stop provided on an end of the scissor guide or of the scissor rod at an end of the leaf.

8. The leaf unit according to claim 7, further comprising a predetermined breaking point provided at a transition between the mounting head and a body of the scissor rod or of the scissor guide; and wherein the mounting head comprises an extension crosspiece to connect the stop to the body of the scissor rod and of the scissor guide.

9. The leaf unit according to claim 7, wherein the mounting head comprises an extension crosspiece to connect the stop to a body of the scissor rod or of the scissor guide.

10. The leaf unit according to claim 7, further comprising at least one safety element, which is displaceable transversally with respect to a longitudinal direction of the scissor guide relative to the body of the scissor guide, provided on the scissor guide to install the scissor guide in the leaf groove; and at least one punch bolt on the scissor guide to fix the scissor guide on the leaf.

11. The leaf unit according to claim 7, further comprising at least one punch bolt on the scissor guide to fix the scissor guide on the leaf.

12. A leaf arrangement comprising a leaf of a window or of a door; a leaf profile of the leaf comprising a C-shaped leaf groove in a rebate; and at least one leaf unit of a scissor mechanism of a fitting according to claim 1.

13. A method for front installing a leaf unit of a scissor mechanism of a fitting according to claim 7 in the C-shaped leaf groove in the rebate of the leaf profile of the leaf of the window or of the door, comprising a step of swivel inserting the leaf unit into the leaf groove in the pre-fixed state.

14. The method according to claim 13, further comprising a step of displacing the leaf unit in the leaf groove in a longitudinal direction until the stop of the mounting head strikes against an end of the leaf profile.

15. The method according to claim 13, further comprising, after the step of swivel inserting the leaf unit into the leaf groove, a step of securing the leaf unit against swivelling out by a safety element which is displaceable relative to the scissor guide.

16. The method according to claim 13, further comprising a step of installing the scissor guide fixedly on the lead profile with the leaf unit in a pre-fixed state.

17. The method according to claim 14, further comprising, after the step of installing the scissor guide, a step of breaking off the mounting head.

18. The method according to claim 13, further comprising, after an installation of the fitting and actuation of the fitting for a first time, a step of shearing off a fixing journal providing a positive locking connection between the scissor guide and the scissor rod in response to a relative movement of the scissor rod in relation to the scissor guide.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) Further features, advantages and application possibilities of the present invention are produced from the following description of exemplary embodiments by way of the drawing and from the drawing itself. In this case, all described and/or graphically represented features, on their own or in arbitrary combination, form the object of the present invention, irrespective of their summary in the claims or of the priority reference thereof.

(2) The drawings are as follows:

(3) FIG. 1 shows a front view of a leaf arrangement,

(4) FIG. 2 shows a side view of the leaf arrangement in FIG. 1 with the leaf tilted,

(5) FIG. 3 shows a view of the leaf arrangement in FIG. 2 when seen in the direction of arrow III in FIG. 2,

(6) FIG. 4 shows a top view of a leaf unit according to the invention in the closed position,

(7) FIG. 5 shows a top view of the leaf unit in FIG. 4 in the tilted position,

(8) FIG. 6 shows an exploded representation of the leaf unit in perspective with the scissor guide and the scissor rod and an enlarged view of a detail of the scissor parts,

(9) FIG. 7 shows a perspective representation of different components of the leaf arrangement,

(10) FIG. 8 shows a perspective representation of the leaf unit inserted into the leaf groove of the leaf,

(11) FIGS. 9-11 show cross sectional views when the leaf unit is swivelled into the leaf profile,

(12) FIG. 12 shows a cross sectional view of the leaf unit in the region of the positive locking connection between the scissor guide and the scissor rod,

(13) FIG. 13 shows a view of the leaf unit inserted into the leaf groove in the state not yet positioned correctly,

(14) FIG. 14 shows a view corresponding to FIG. 13 of the leaf unit in the correctly positioned state,

(15) FIG. 15 shows a cross sectional view of the leaf arrangement in the region of a punch bolt in the non-fastened state,

(16) FIG. 16 shows a view of a detail in FIG. 15,

(17) FIG. 17 shows a view corresponding to FIG. 15 in the fastened state,

(18) FIG. 18 shows a view of a detail of the representation in FIG. 17,

(19) FIG. 19 shows a view of part of the leaf arrangement with a driving rod inserted,

(20) FIG. 20 shows a view corresponding to FIG. 19 with the driving rod displaced in the direction of the leaf unit,

(21) FIG. 21 shows a cross sectional view of a connecting body of the leaf unit in the state not yet connected to the driving rod,

(22) FIG. 22 shows a view of a detail in FIG. 21,

(23) FIG. 23 shows a view corresponding to FIG. 21 with the driving rod connected and

(24) FIG. 24 shows a view of a detail in FIG. 23.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(25) FIG. 1 shows a leaf arrangement 1 with a leaf 2 of a window. The leaf 2 is mounted on a frame 3 so as to be pivotable. A handle 4, which is rotatable about 180 from the vertically orientated position shown, serves for opening and closing the leaf 2. The handle 4 interacts with a fitting gear, not shown, which interacts, in turn, with a fitting. The leaf 2 comprises a circumferential leaf profile 5 which comprises a C-shaped leaf groove 6 which is open toward the frame 3. The leaf groove 6 is arranged in the rebate 7 of the leaf profile 5 of the leaf 2.

(26) The fitting, which consists of a plurality of fitting parts and extends over a fairly large region of the rebate 7 of the leaf profile 5, comprises at least one driving rod 8, as is shown, for example, in FIG. 19, at least one corner drive (not shown), at least one striker (not shown) and apart from this a scissor mechanism 9. The scissor mechanism 9 comprises, in turn, a leaf unit 10, a scissor leg 11 which extends between the leaf unit 10 and the frame 3 and a further scissor leg 12 which connects the scissor leg 11 and the leaf unit 10. The scissor leg 11 is mounted at its one end on the leaf unit 10 so as to be pivotable and longitudinally displaceable, whilst it is mounted at its other end on a fitting part 13 of the frame 3 so as to be rotatable. The further scissor leg 12 is mounted on the scissor leg 11 and on the leaf unit 10 so as to be rotatable in each case.

(27) The leaf unit 10 as such, shown in FIG. 4 in the closed position and in FIG. 5 in the tilt position, comprises, as can be seen in particular in FIG. 6, a scissor guide 14, which is to be fastened on the leaf 2 or rather leaf profile 5 in the region of the leaf groove 6, and a scissor rod 15 as main components. In the operating state, when, therefore, the leaf unit 10 is arranged in the leaf groove 6 on the leaf 2, is connected to the further fitting parts and is actuatable by means of the handle 4, the scissor rod 15 is movable relative to the scissor guide 14 fastened on the leaf 2 or rather is displaceable in the longitudinal direction. The two end positions, into which the scissor rod 15 is movable in the longitudinal direction in the operating state, are shown in FIGS. 4 and 5. In the closed position shown in FIG. 4, the end 16 of the scissor rod 15 at the end of the leaf is further away from the scissor guide 14 than is the case in the tilt position shown in FIG. 5. In both positions, the position of the scissor guide 14 is unchanged as it is fastened on the leaf 2. Apart from this, it can be seen, in particular in FIGS. 4 to 6, that the further scissor leg 12 is mounted on the scissor guide 14. A bearing slot 47 is provided on the scissor guide 14 for the turn-move bearing arrangement of the scissor leg 11.

(28) In conjunction with the leaf unit 10, it is provided then that the scissor guide 14 and the scissor rod 15 are pre-fixed in a pre-installation position between the closed position and the tilt position prior to the first-time use and prior to insertion into the leaf 2. The pre-installed state is shown in particular in FIGS. 7 and 8. In the present case, the pre-installation position provides the middle position between the closed position and the tilt position. The scissor rod 15 is movable out of the pre-installation position by half the distance between the closed position and the tilt position relative to the scissor guide 14. As a rule, this is a section of between 1 cm and 3 cm where an overall distance between the closed position and the tilt position is between 2 cm to 6 cm. A conventional distance between the closed position and tilt position is approximately 3.8 cm.

(29) In the case of the embodiment shown, the pre-fixing is designed as a positive locking connection between the scissor guide 14 and the scissor rod 15. In the present case, the positive locking connection here comprises a fixing journal 17 and a journal opening 18 which is provided and designed for the engagement of the fixing journal 17. In this case, the fixing journal 17 is situated on the side of the scissor rod 15 facing the scissor guide 14, whilst the journal opening 18 is provided on the scissor guide 14. This is shown in particular in FIG. 6 and in the pre-fixed state in FIG. 12. Apart from this, it can be seen in particular in FIGS. 6 and 12 that the fixing journal 17 has a predetermined breaking point 19 at the transition to the scissor rod 15. The predetermined breaking point 19 ensures that the fixing journal 17 is sheared off when the scissor rod 15 is moved in relation to the scissor guide 14 for the first time.

(30) As a further aspect for the correct positioning of the leaf unit 10 when it is being installed in the leaf groove 6, the scissor rod 15 comprises, on its leaf-side end 16, a mounting head 20, on which a stop 21 is provided. In the case of the exemplary embodiments shown, the mounting head 20 with the stop 21 is provided in combination with the pre-fixing or rather with the positive locking connection. However, it must be pointed out explicitly that the mounting head 20 with the stop 21 can also be realized in principle without any pre-fixing of the leaf unit 10. In addition, it is also possible in principle not to provide the mounting head 20 on the scissor rod 15, but rather on the scissor guide 14. This would mean, however, the realization of a relatively long mounting head 20 as the scissor guide 14 is ultimately clearly shorter than the scissor rod 15.

(31) In order to be able to sever the mounting head 20 in a simple manner, a predetermined breaking point 23 is provided at the transition between the mounting head 20 and the scissor rod body 22. The mounting head 20 itself comprises three components per se, namely a head portion 24, the stop 21 and an extension crosspiece 25 following the stop 21. The head portion 24 serves ultimately to aid manual gripping of the mounting head 20, in particular when breaking it off. The stop 21 assumes the stop function and ensures that the head portion 24 including the stop 21 is arranged outside the leaf groove 6 when the leaf unit 10 is installed. The extension crosspiece 25 ensures the precise positioning of the leaf unit 10 or rather, in the case of the embodiment shown, of the scissor rod 15 and consequently also of the pre-fixed scissor guide 14.

(32) In the case of the embodiment shown, two safety elements 26, which serve for installing the scissor guide 14 or rather the leaf unit 10, are provided on the scissor guide 14. Each safety element 26 is displaceable transversally with respect to the longitudinal direction of the scissor guide 14 relative to the scissor guide body 27. The function or rather the specific design of each safety element 26 is explained in more detail below in conjunction with the installation of the leaf unit 10.

(33) In addition, two punch bolts 28, which serve for fixing the scissor guide 14 on the leaf 2 or rather leaf profile 5 in the region of the leaf groove 6, are provided on the scissor guide 14. This is also described in more detail below.

(34) FIGS. 9 to 12 will be elaborated on below in conjunction with the front installation of the leaf unit 10 in the leaf groove 6 of the leaf profile 5 of the leaf 2, the following description relating not only to method features but also to features of the object.

(35) The leaf profile 5 or rather the form of the leaf groove 6 can be seen in particular in FIG. 9. It comprises two groove legs 29, 30 which are located opposite one another and behind which groove portions 31, 32 are provided. The scissor guide 14 comprises a shoulder 33, 34 on each of its longitudinal edges, which are located opposite one another, both shoulders being provided for engaging behind the groove portions 29, 30 and for insertion into the groove portions 31, 32. The leaf unit 10, in the pre-fixed state as shown in FIG. 12, is swivelled into the leaf groove 6 corresponding to the movement arrow 35. In this case, the shoulder 33 engages behind the groove leg 29 and passes into the groove portion 31. The clearance distance between the groove legs 29, 30, in this case, is such that the shoulder 34 is able to swivel past the groove leg 30.

(36) Once swivelled in corresponding to FIG. 9, the leaf unit 10 is lowered inside the leaf groove 6, as shown by the movement arrow 36. As a result of the lowering, a space 38 is produced between the groove bottom 37 behind the shoulder 33 and the end of the oppositely situated groove leg 29. The safety element 26 with a fill leg 39 is slid into said space 38 in the direction of the movement arrow 40, as shown in FIG. 11. In said secured state, the scissor guide 14 and consequently also the leaf unit 10 cannot rotate independently out of the leaf groove 6 even under load. Nevertheless, displacement of the leaf unit 10 in the longitudinal direction of the leaf groove 6 is easily possible.

(37) As the mounting head 20 cannot be swivelled into the leaf groove 6 in particular on account of the size of the head portion 24 and, apart from this, on account of the stop 21, the swivelling-in is effected such that at least the head portion 24 and the stop 21 are situated outside the leaf groove 6. Such a state is shown in FIG. 13. For precise positioning of the leaf unit 10, the leaf unit 10 is then displaced in the direction of the movement arrow 41 such that the state shown in FIG. 14 is produced, which is also shown, apart from this, in FIG. 8.

(38) For the sake of completeness, it can be noted at this point that it is also possible, in principle, also to slide the leaf unit 10 as a whole into the leaf groove 6 laterally instead of the previously described swivelling-in by way of front installation. In this connection too, the state which is shown in FIGS. 13 and 14 or rather 8 can then be ultimately achieved.

(39) In this state, in which the leaf unit 10 is situated as such in a precisely predefined position inside the leaf groove 6 and also the scissor guide 14 and the scissor rod 15 are situated in the pre-fixed state and consequently relative to one another in a predefined position, the leaf unit 10 is fixed as a result of inserting the punch bolts 28 into the leaf profile 5. In this case FIGS. 15 and 16 show the state prior to tightening the punch bolts 28, whilst FIGS. 17 and 18 show the state in which the punch bolts 28 are already inserted into the leaf profile 5 in the region of the leaf groove 6. The insertion is effected in the region of the groove leg 29 such that punched-out material drops into the region of the groove portion 31. During the insertion of the punch bolts 28, the leaf unit 10 or rather the scissor guide 14 is held under tension in a preferred manner manually, thereby ensuring that the leaf unit in the pre-fixed state is fastened in the leaf groove 6 actually in the predefined position 10.

(40) The mounting head 20 can then be broken off and the connection between the leaf unit 10 and the driving rod 8 can be undertaken. The order in which this occurs is arbitrary.

(41) FIG. 19 shows a state in which the driving rod 8 has already been inserted into the leaf groove 6. Even if this is not clear from the drawing, the driving rod 8 has also been swivelled into the leaf groove 6. Once the driving rod 8 has been inserted into the leaf groove 6, it is displaced in the direction of the movement arrow 42 and consequently in the direction of the leaf unit 10, as can be seen in FIG. 20.

(42) The connection between the driving rod 8 and the leaf unit 10 is effected by means of a connecting body 43 which is provided on the other end of the scissor rod 15. The connecting body 43 comprises an end-side projection 44 which tapers in the direction of the driving rod 8 and consequently facilitates the movement of the driving rod 8 in the direction of the connecting body 43 or rather the coupling of the two parts. Apart from this, a punch bolt 45, which serves for connecting the connecting body 43 to the driving rod 8, is provided in the connecting body 43. In this case, FIGS. 21 and 22 show the state in which the punch bolt 45 has not yet been inserted. FIGS. 23 and 24 show the state in which the punch bolt 45 is inserted into the driving rod 8 such that a fixed connection is produced between the connecting body 43 and consequently the leaf unit 10 or rather the scissor rod 15 and the driving rod 8. The punched-out material arising when the punch bolt 45 is inserted is received in a space 46 which is realized beneath the driving rod 8.

(43) TABLE-US-00001 1 Leaf arrangement 2 Leaf 3 Frame 4 Handle 5 Leaf profile 6 Leaf groove 7 Rebate 8 Driving rod 9 Scissor mechanism 10 Leaf unit 11 Scissor leg 12 Further scissor leg 13 Fitting part 14 Scissor guide 15 Scissor rod 16 End 17 Fixing journal 18 Journal opening 19 Predetermined breaking point 20 Mounting head 21 Stop 22 Scissor rod body 23 Predetermined breaking point 24 Head portion 25 Extension crosspiece 26 Safety element 27 Scissor guide body 28 Punch bolt 29 Groove leg 30 Groove leg 31 Groove portion 32 Groove portion 33 Shoulder 34 Shoulder 35 Movement arrow 36 Movement arrow 37 Groove bottom 38 Space 39 Fill leg 40 Movement arrow 41 Movement arrow 42 Movement arrow 43 Connecting body 44 Projection 45 Punch bolt 46 Space 47 Bearing slot