LOPERFIDO, Michele (Via della Resistenza 29, Castellana Grotte, I-70013, IT)
CLAIMS
1. A closing system (14) for a door and window casing comprising a fixed part (15) to be anchored to a wing (12) of the casing and at least one movable part (16, 17) drivable in use between an open position and a closed position of the casing, the fixed part being suitable for anchoring to the wing along a longitudinal groove (38) formed in an edge section member (12a) of the wing (12) and the at least one movable part having a plurality of closing elements spaced apart from each other, characterized in that at least one securing element (21-24) for fastening to the wing is mounted on said fixed part, said securing element being movable between a mounting position at which it can be frontally inserted into said groove when the fixed part is brought to the mounting position on the wing and an operating position at which it is in engagement with an undercut (39, 40) formed in the groove so that a link is provided between the closing system and wing. 2. A closing system as claimed in claim 1, characterized in that the securing element is rotatably mounted on the fixed part (15) of the closing system for rotation between the mounting and operating positions. 3. A closing system as claimed in claim 2, characterized in that the at least one securing element is connected to the fixed part (15) by means of a screw (29-32) frictionally engaged in a thread of the securing element in such a manner that rotation of the screw involves rotation of the securing element from the mounting to the operating positions.
4. A closing system as claimed in claim 3, characterized in that in the operating position the securing element (21-24) is suitable for abutment against the side walls of the groove (38), a further rotation of the screw after the securing element is brought to the operating position providing a pulling action between the securing element (21-24) and the fixed part (15) so that their mutual connection is made rigid.
5. A closing system as claimed in claim 4, characterized in that the securing element (21-24) is provided with projecting ribs (47, 48) adapted to abut against the fixed part (15) when the screw carries out the pulling action on the securing element (21-24), the ribs (47, 48) forming a longitudinal race (49) along which a rod (16a, 17a) for actuation of the movable part of the closing system can run when mounting has been completed.
6. A closing system as claimed in claim 3, characterized in that the securing element comprises a block (21a-24a) of rectangular shape in plan view which can rotate from the mounting position at which it is disposed with its major size aligned with the fixed part (15) of the closing system to the operating position at which it is disposed transversely thereof .
7. A closing system as claimed in claim 6, characterized in that the block (21a-24a) has tapering regions (43, 44) at its diagonally opposite vertices to promote insertion of the block by rotation in the undercut (39, 40) formed by the groove, during mounting.
8. A closing system as claimed in claim 6, characterized in that the block (21a-24a) has its major size almost equal to the width of the groove (38) and is provided with rounded portions (70, 71) at its diagonally opposite vertices to enable rotation during mounting until the operating position transverse to the groove is reached.
9. A closing system as claimed in claim 6, characterized in that the block (21a-24a) is made of thermally insulating material .
10. A closing system as claimed in claim 9, characterized in that the block (21a-24a) is made of nylon.
11. A closing system as claimed in claim 6, characterized in that the block (21a-24a) is made of thermally insulating material and in that the block (21a-24a) is provided with a seat (46) housing a metal body (25-28), the screw being received in aligned holes formed in the fixed part, in the securing element and the metal body, with the securing element (21-24) interposed between the metal body (25-28) and the fixed part (15), rotation of the screw causing rotation of the metal body and the block from the mounting position to the operating position owing to the presence of cuts in a thread of the hole in the metal body.
12. A closing system as claimed in claim 11, characterized in that the metal body is insulated from the groove in the operating position through the block of insulating material. 13. A closing system as claimed in claim 1, characterized in that the fixed part of the mounting system is provided with a pair of securing elements (21-24) for each closing element (16, 17) of the movable part of the closing system, the two securing elements (21-24) of a pair being disposed on opposite sides with respect to the corresponding closing element (16, 17 ).
14. A closing system as claimed in claim 1, characterized in that it is of the cremone-bolt type. 15. A closing system as claimed in claim 1, characterized in that it comprises a plurality of securing elements (21-24) mounted spaced apart from each other along the fixed part (15) of the closing system.
16. A door and window casing comprising a closing system (14) provided with a fixed part (15) to be anchored to a wing of the casing and at least one movable part (16, 17) drivable in use between an open position and a closed position of the casing, the fixed part (15) being suitable for anchoring to the wing along a longitudinal groove (38) formed in an edge section member (12a) of the wing and the at least one movable part (16, 17) having a plurality of closing elements spaced apart from each other, characterized in that at least one securing element (21-24) for fastening to the wing is mounted on said fixed part, said securing element being movable between a mounting position at which it can be frontally inserted into said groove (38) when the fixed part is brought to the mounting position on the wing and an operating position at which it is in engagement with an undercut (39, 40) formed in the groove so that a link is provided between the fixed part (15) and wing (12) .
17. A casing as claimed in claim 16, characterized in that the door is formed with thermal-break section members having an internal metal section member (18), an external metal section member (19) and at least one connecting element (20) between said internal and external section members made of thermally insulating material.
18. A casing as claimed in claim 17, characterized in that the portions of the groove (38) forming the undercut (39, 40) are of one piece construction with the section members of metal material (18, 19) .
19. A casing as claimed in claim 16, characterized in that the fixed part of the closing system in addition to being fastened by means of the at least one securing element, is also screwed down to the wing at the edge section member (12a) of the wing at a kinematic connection between the closing system (14) and a knob of the casing.
20. A casing as claimed in claim 16, characterized in that said wing is of the sliding type. 21. A casing as claimed in claim 16, comprising a closing system as claimed in one of claims 2 to 15. |
"CLOSING SYSTEM FOR DOOR AND WINDOW CASINGS AND CASING COMPRISING THIS CLOSING SYSTEM"
The present invention relates to an innovative closing system with a facilitated mounting, particularly suitable for application to thermal-break casings.
More generally, the invention also relates to a casing comprising this closing system.
Casings for doors or windows which have metal or thermal- break section members and are provided with closing systems to be applied along an edge section member of a casing wing have been known in the art since long.
The closing system, of the cremone-bolt type for example with several closing points, comprises a fixed part to be fastened to the wing and one or more parts movable between a closed position and an open position of the casing, which can be driven by the casing user through a knob. The fixed part of the closing system is anchored at several points to the edge section member of the wing to ensure a satisfactory mechanical strength to the casing. Anchoring of the closing system to the wing can be provided by screwing down its fixed part to the section member at different points at different heights.
However, in this mounting system several mounting holes are required along the section member, which is particularly disadvantageous when the wing is formed with thermal-break section members involving two metal section members connected to each other by an intermediate section member of thermally insulating plastic material.
Actually, the screws for fastening of the closing system should be anchored to the plastic material of the thermal- break section member, which will offer a weak mechanical strength, should a housebreaking attempt take place. For thermal-break casings, use of a metal plate has been proposed which is to be inserted in a longitudinal groove formed in the edge section member of the wing, to which the fixed part of the closing system is screwed down on mounting . The groove has two fins projecting from the internal and external metal section members of the wing respectively (connected to each other by the insulating intermediate section member) . The fins form undercuts in which the anchoring plate engages when the closing system is screwed down thereon, so as to form a link transverse to the wing.
This anchoring system however has a series of drawbacks that are not at all negligible.
In particular, the plates must be inserted into the groove undercut on the edge section member since assembling of the wing in the workshop, which makes mounting of the whole casing awkward, arduous and not very flexible. In addition, since the anchoring plates are made of metal they form a thermal bridge between the internal and external metal section members, thereby greatly reducing the thermal insulation properties of the thermal-break section members.
It is a general aim of the present invention to obviate the above mentioned drawbacks by providing a closing system for casings which can be easily and conveniently mounted on a
wing, while at the same time ensuring a satisfactory mechanical strength in case of a housebreaking attempt and good thermal properties.
In view of the above aim, in accordance with the present invention, a closing system for a door and window casing has been devised which comprises a fixed part to be anchored to a wing of the casing and at least one movable part that is drivable in use between an open position and a closed position of the casing, the fixed part being suitable for anchoring to the wing along a longitudinal groove formed in an edge section member of the wing and the at least one movable part having a plurality of closing elements spaced apart from each other, characterized in that at least one securing element for fastening to the wing is mounted on said fixed part, the securing element being movable between a mounting position at which it can be frontally inserted into said groove when the fixed part is brought to the mounting position on the wing and an operating position at which it is in engagement with an undercut formed in the groove so as to provide a link between the closing system and wing.
Still in accordance with the invention a door and window casing has been devised which comprises a closing system provided with a fixed part to be anchored to a wing of the casing and at least one movable part that is drivable in use between an open position and a closed position of the casing, the fixed part being suitable for anchoring to the wing along a longitudinal groove formed in an edge section member of the wing and the at least one movable part having
a plurality of closing elements spaced apart from each other, characterized in that at least one securing element for fastening to the wing is mounted on said fixed part, the securing element being movable between a mounting position at which it can be frontally inserted into said groove when the fixed part is brought to the mounting position on the wing and an operating position at which it is in engagement with an undercut formed in the groove so as to provide a link between the fixed part and wing. For better explaining the innovative principles of the present invention and the advantages it offers over the known art, a possible embodiment applying said principles will be described hereinafter with the aid of the accompanying drawings . In the drawings : - Fig. 1 shows a perspective view of a closing system in accordance with the invention during the mounting step and of part of a casing to which the closing system is applied,
- Fig. 2 is a top view of the wing portion of the preceding figure during a starting mounting step, - Fig. 3 is a top view of the wing portion of the preceding figure when mounting has been completed,
- Fig. 4 is a perspective view of a securing element of the closing system for fastening to the wing,
- Fig. 5 is a second perspective view of a securing element of the closing system for fastening to the wing,
- Fig. 6 represents a further perspective view of the closing system of the preceding figures .
With reference to the drawings, shown in Fig. 1 is part of a casing 11 made in accordance with the invention, which
comprises a wing 12 (a portion of the edge section member 12a of which is shown) and a frame 13 (partly diagrammatically shown in the figure) .
In the embodiment shown, the casing 11 is of the thermal- break type with a sliding wing.
Wing 12 comprises an internal section member 19 and an external section member 18 of metal material connected to each other by elements (or bars) 20 of thermally insulating material, advantageously polyamide . A closing system 14 for the casing is applied along the edge section member 12a of the wing, which system comprises a fixed part 15 designed to be fastened to the section member 12a and at least one movable part 16 adapted to be moved, when mounting has been completed, between a closed position and an open position of the casing.
In the embodiment shown, the closing system 14 is of the cremone-bolt type and comprises two movable parts 16, 17 forming a pair of closing elements spaced apart from each other at different heights, and designed either for engagement in the closed position with suitable abutments in the frame 13 (not shown in the figure) or for movement of further components (not shown) suitable for engagement with the fixed abutments of the frame. The fixed part 15 comprises a central body 15c where the mechanism for transmitting motion from the knob to the movable parts 16-17 is disposed, and two rods 15a and 15b longitudinally protruding from opposite sides of the central body. The movable closing elements 16, 17 are mounted on the
fixed part 15 so that they can slide in slots 37 according to known techniques.
The closing system 14 can be operated through a knob (not shown) that, when mounting has been completed, is fastened to the section member 12a at the height of hole 33 designed to be passed through by the knob element transmitting motion to the closing system.
The fixed part 15 has a generally elongated shape and is applied to the edge section member 12a along a longitudinal groove 38, clearly shown also in Figs. 2 and 3, having fins (or ribs) 50 and 51 forming undercuts 39 and 40. Each fin 50 and 51 is of one piece construction with one of the two, internal and external respectively, metal members, forming undercuts on opposite sides of groove 38. The closing system 14 at a central position is provided with a hole 35 at which the movable parts 16, 17 are kinematically connected to the casing knob, through the actuating rods 16a, 17a shown in Fig. 6. The fixed part 15 also has two holes 36 for fastening to the metal section member 19 which holes are in register with the two holes 34 on the section member 19, to enable the closing system 14 to be screwed down to the edge section member 12a close to the knob. Holes 36 are disposed in the vicinity of hole 35 on opposite sides thereof.
One or more securing elements 21-24 are mounted on the fixed part 15 and they are designed to anchor the closing system 14 to the wing 12 along the longitudinal extension of the latter at mutually spaced apart points.
The securing elements 21-24 are movable between a mounting position at which they can be frontally inserted into groove 38 when the closing system 14 is brought to the mounting position as shown by the arrow in Fig. 2, and an operating position (Fig. 3) at which they are engaged in the undercuts 39 and 40 of groove 38 so as to fasten the fixed part 15 to the wing in a direction transverse to the edge section member 12a. The securing elements 21-24 are rotatably mounted on the fixed part 15 of the closing system so that they can rotate between the mounting and operating positions. Movement from the mounting position to the operating position of the securing element 21-24 is obtained by suitable drive means accessible to the operator when the closing system 14 is in its mounting position on the wing.
Advantageously the drive means comprises one screw 29-32 for each securing element 21-24, which screw joins rod 15 to the respective securing element. The screw 29-32 is frictionally engaged in a thread of the securing element 21-24, in such a manner that rotation of the screw causes rotation of the securing element 21-24 from the mounting to the operating position.
Sufficient friction of the screw in the thread formed in the securing element, so as to cause the latter to be driven in rotation during the mounting step can be obtained in different ways, by means of cuts on the thread in the securing element, for example.
In the operating position the securing element 21-24 is adapted to abut against side walls of the groove 38. A
further rotation of the screw after the securing element has been brought to the operating position causes a pulling action between the securing element 21-24 and the fixed part 15 capable of giving rise to a rigid mutual connection. In the example in the drawing four securing elements 21-24 are present, two for each closing element 16, 17 and they are disposed in pairs on opposite sides of each element 16, 17 as shown in Fig. 1. This expedient is provided in order to ensure a high mechanical strength at the closing points of the casing in case of a housebreaking attempt.
Advantageously, each securing element 21-24 comprises a block 21a-24a made of an insulating material, nylon for example, so as to keep the internal and external section members 18 and 19 of the wing 12 thermally insulated when mounting has been completed.
Block 21a (quite similar to the other elements 22a-24a) is practically of rectangular shape in plan view. Block 21a is provided on a face thereof with a seat 46 (shown in Fig. 5) suitable for receiving a metal body 25 shown in Fig. 1. Body 25 is in the form of a plate the shape of which matches that of seat 46 so that it is integral with the seat in case of rotations around a fitting direction of the plate into the seat. Seat 46 has the same shape as block 21a. Plates 26-28 identical with plate 25 are provided for coupling with blocks 22a-24a.
Plate 25 and block 21a have holes, 48 and 45 respectively, that are coaxial with each other when the plate is housed in seat 46.
Holes 45 and 48 receive screw 29 connecting plate 25 and block 21a to rod 15, the block being interposed between the plate and fixed part 15.
Hole 48 in plate 25 is threaded and has cuts in its thread so that when the screw encounters said cuts, screw and plate are integral with each other and during rotation the screw drives both the plate 25 and block 21a in rotation.
Then, when the securing element 21-24 reaches the operating position, the block 21a-24a abuts against the side walls of groove 38 and a further tightening of the screw causes the securing element 21-24 to be pulled against rod 15, thus creating a rigid connection between rod and securing elements .
The plate 25 and securing element 21 are pre-mounted on the fixed part 15 with the securing element 21 in a vertical position in alignment with the fixed part 15 as shown in
Fig. 2.
When the fixed part 15 of the closing system is brought to the mounting position close to groove 38 (see the arrow in Fig. 2), the securing elements 21-24 are inserted into the groove, having a limited transverse width in the mounting position .
Once the securing elements are inserted into the groove, by acting on screw 29 they are rotated from the longitudinal mounting position to the transverse operating position where the opposite ends 41 and 42 of block 21a are engaged in the undercuts 39 and 40 thereby fastening the fixed part 15 to the edge section member 12a.
Once the operating position has been reached, the ends 41, 42
abut against the side walls of groove 38 so that a further rotation of screw 29 causes screwing down of the latter in plate 25, so that block 21a is pulled against the fixed part 15 and the securing element is rigidly connected to said fixed part 15. The rotation direction of the securing element 21 is shown in Fig. 1 by arrow 60.
Advantageously, block 21a has chamfering (or tapering) regions 43 and 44 at diagonally opposite vertices where thickness of the block is reduced, as clearly shown in Fig. 4. Due to this expedient, introduction of the ends 41 and 42 of the block into the undercuts 39 and 40 of groove 38 is facilitated, on rotation of the block.
The major size of block 21a-24a corresponds to the width of groove 38. At the diagonally opposite vertices of the block there are rounded regions 70, 71 ensuring that the block can rotate within the groove and that interferences are avoided with the side walls of the groove during mounting. The radius of curvature of the rounded region is selected to be smaller then half the width of groove 38.
It is to be pointed out that in the operating securing position, blocks 21a-24a insulate the plate 25-28 from the internal and external metal section members 18, 19, avoiding formation of a thermal bridge in parallel to the polyamide bars 20.
As clearly shown in Fig. 6, the closing elements 16 and 17 are connected to the driving mechanism connected to the casing knob by means of rods 16a and 17a respectively, that slide along rods 15a and 15b.
Rods 16a and 17a have elongated slots 72 and 73 at the securing elements 22 and 23 to enable passage of the respective screws 30, 31 for connection to the fixed part 15. The securing blocks 21a-24a have two parallel ribs 47, 48 oriented transversely of the direction of maximum size of the block as shown in Fig. 4.
A race 49 is formed between the two ribs 47, 48 for sliding of the actuating rod 16a, 17a therein, once mounting has been completed with the securing element in the transverse operating position (see element 23 brought to the operating position in Fig. 6, or also Fig. 3) .
When the screw threads into plate 25-28 causing pulling of the securing element against the fixed part 15, ribs 47, 48 abut against rod 15a, 15b in the operating position, leaving the necessary space for sliding of the actuating rods between rod 15 and blocks 21a-24a.
Advantageously, ribs 47, 48 have chamfering regions at diagonally opposite ends relative to the centre of the block which chamfering regions are formed towards the inside of race 49 so as to promote reception of rod 16a, 17a in the race during tightening of the screw 30-31. At this point it is apparent that the intended purposes of the invention are reached. In fact a closing system has been provided which can be mounted on the wing of a casing in a simple and quick manner, provision of holes for fastening along the edge section member of the wing being avoided.
The securing elements can be frontally inserted into the groove on the edge section member, without previous
insertion of the same being required on assembling of the wings in the workshop.
In addition, a satisfactory thermal insulation in case of a thermal-break section member is ensured, since the block made of nylon keeps the metal section members insulated.
The closing system is anchored to the wing in a steady and rigid manner, with a high mechanical strength capable of withstanding possible housebreaking attempts in a satisfactory manner. Obviously, the above description of an embodiment applying the innovative principles of the present invention is given by way of example only and therefore must not be considered as a limitation of the scope of the patent rights herein claimed.
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