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Title:
SUPPORTING FRAME FOR SECTIONAL DOORS
Document Type and Number:
WIPO Patent Application WO/2013/098716
Kind Code:
A1
Abstract:
A supporting frame (1) for sectional doors is described, comprising a jamb (5) vertically attached to a wall sidewards the door, a first track (10) and preferably a second track (20) both constrained to the jamb (5); the first track (10) comprises a first profile (11) vertically extending from a lower end (5a) of the jamb and defining a horizontal length (10a), and a second profile (12) defining a curvilinear length (10b) and a horizontal length (10c) of the track (10). If present, the second track (20) is attached to the jamb (5) above the first track and it comprises a third profile (21) defining an oblique length (20a) and a horizontal length (20b). Each of the two tracks implements a continuous path guiding the sliding rollers of the door panels (3). Furthermore, the first, second and third profiles are made each in one-piece. The jamb (5) comprises a first (6) and a second (7) threaded holes, and the first track comprises a first screw (15) which can be inserted in the first threaded hole for attaching the first track to the jamb and the second track comprises a second screw (25) which can be inserted in the second threaded hole for attaching the second track to the jamb.

Inventors:
TOMASONI RINO PIERINO (IT)
Application Number:
IB2012/057423
Publication Date:
July 04, 2013
Filing Date:
December 18, 2012
Export Citation:
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Assignee:
S.E.I.P. SOCIETA' EUROPEA INDUSTRIALE PORTE S.R.L. (Via Rossi 14, Remedello, I-25010, IT)
International Classes:
E05D15/16; E05D15/24
Foreign References:
US6006814A1999-12-28
EP1170450A22002-01-09
US2991496A1961-07-11
FR2947294A32010-12-31
US20030213566A12003-11-20
US6006814A1999-12-28
Attorney, Agent or Firm:
BIESSE S.R.L. (Via Corfù 71, Brescia, I-25124, IT)
Download PDF:
Claims:
CLAIMS

1. Supporting frame (1) for a sectional door comprising:

- a jamb (5) intended to be attached vertically to a wall (2) sidewards a passageway in which said sectional door is installed;

- a first guide track (10) comprising in its turn a first profile (11), extending vertically from a lower end

(5a) of the jamb (5) defining a vertical length (10c) of the first guide track (10), and a second profile (12) defining a curvilinear length (10b) and a horizontal length

(10c) of the first guide track (10), so that the first guide track (10) implements a continuous path, intended to guide sliding rollers (4) of panels (3) of said sectional door, composed of the series of vertical (10a) , curvilinear

(10b) and horizontal (10c) lengths;

wherein the first (11) and the second (12) profiles are made each in one-piece, and are both constrained to the jamb (5) and connected to each other through at least one first screw (15) which is inserted at the same time through the first (11) and the second (12) profiles.

2. Frame (1) according to claim 1, further comprising:

- a second guide track (20) constrained to the jamb (5) above the first guide track (10) and comprising a third profile (21) defining an oblique length (20a) and a respective horizontal length (20b) , so that the second guide track (20) implements a continuous path, intended to guide the sliding roller (4) of a first panel (3a) of panels (3) composing the sectional door, composed of the series of oblique (20a) and horizontal (20b) lengths, and

- wherein said third profile (21) is made in one- piece, and

- the jamb (5) comprises a second screw (25) which can be inserted in a threaded hole (7) of the jamb (5) to attach the second track to the jamb (5) .

3. Frame (1) according to claim 1 or claim 2, wherein the threaded holes (6, 7) obtained in the jamb for

the coupling with the profiles (11, 12, 21) are composed of a hole passing through the jamb (5) or a threaded insert accommodated inside the respective through hole (6, 7).

4 . Frame (1) according to claim 2 or claim 3, wherein the first (11), the second (12) and the third (21) profile have the same cross section substantially having a C-shape.

5. Frame (1) according to the preceding claim, wherein the first (11), the second (12) and the third (21) profile have each a channel-shaped lower side (40a) , on which the rollers (4) of panels slide, an upper side (40b) and an upright back portion (40c) connecting the lower and upper sides.

6. Frame (1) according to any one of the preceding claims, wherein the jamb (5) has a L-shaped cross section and it comprises a first side (8) intended to be attached to a wall (2) sidewards the door and a second side (9), orthogonal to the first side, provided with the afore said first (6) and second (7) threaded hole.

7. Frame (1) according to the preceding claim, wherein the second side (9) of the jamb comprises, at an upper end (5b) of the jamb, holes (30) for assembling a support (31) provided with a bearing for a shaft carrying torsion springs.

8. Frame (1) according to claim 6 or 7, wherein the second side (9) comprises, at the upper end (5b) of the jamb, a hole (35) for the passage of electric cables through the second side itself.

9. Frame (1) according to any one of the preceding claims, wherein the jamb (5) and the first (11), the second (12) or the third (21) profile are obtained by metal sheet bending.

10. Frame according to any one of the claims 6-9, wherein the first side (8) of the jamb comprises holes (31) for coupling the jamb (5) integrally with a portal-like tubular frame, pre-existing on the wall, and wherein said holes (31) are aligned to couple the jamb (5) simultaneously with an upright element and a horizontal element of the tubular frame to avoid the oscillations thereof .

11. Sectional door (100) for the opening/ closing of a passageway, the sectional door comprising a couple of supporting frames (1) according to any one of the preceding claims 1-10, both intended to be attached to a corresponding side wall (2) of said passageway, and a set of panels (3) of the door arranged in series and connected one another by hinges allowing the rotation between adjacent panels along respective horizontal axes, each panels being provided with sliding rollers (4), applied on its opposite side ends and inserted into the guide tracks (10, 20) of the corresponding supporting frames, said sectional door being movable between a closing position, in which it is pulled down in a vertical position and it intercepts said passageway, and an opening position, in which it is in a lifted up position and it clears said passageway.

Description:
Supporting frame for sectional doors

* ** *

Field of the Invention

The present invention relates generally to the field of sectional doors and, specifically, to an innovative supporting frame which supports and guides the door between the opening and closing positions.

The present application claims the priority of Italian Patent Application BS2011A000182 filed on 29 December 2011.

State of the Art

Sectional doors are usually composed of a plurality of horizontal panels arranged in series and connected to each other by hinges allowing the relative rotation of adjacent panels along respective horizontal axes. Moreover, the horizontal panels are assembled laterally two supporting frames, one for each door side, attached to the walls and/ or the ceiling of the room where the door is installed and each comprising an vertical jamb and a pair of guide tracks. The first track of such a pair comprises an upright length, extending from the floor to the ceiling and joining to a horizontal length upwards by means of a curvilinear length; thereby the first track is attached by its upright length to afore said upright jamb. On the other hand, the second track comprises an oblique length extending from the upright jamb being attached thereto, above the curvilinear length of the first track, to join to a horizontal length parallel to the corresponding horizontal segment of the first track and overlapped thereto.

Usually, a sectional door is movable between a closing position, in which it is pulled down in a vertical position with the panels arranged between the upright lengths of the first guide tracks, and an opening position, in which it is in a lifted up position with the panels arranged between the horizontal lengths of the guide tracks.

To allow the transition between the two aforementioned positions, each horizontal panel is provided with sliding rollers applied to the its opposed side ends and inserted in the guide tracks of the two supporting frames . The rollers sliding in the tracks causes the panels to have a guided roto-translation and leads the door between the opening and closing positions. More particularly, the pair of rollers by the sides of the top panel of the door are each inserted inside the respective second track of one of the two supporting frames and each slides therein, whereas the rollers of the remaining door panels are coupled with the respective first track and run along it between the vertical and horizontal lengths thereof.

The Applicant found that current supporting frames are not free from drawbacks and they can be improved in various aspects, in particular as regard the easiness of implementation and assembling.

For example, the afore mentioned known frames provide for the assembly to the upright jamb of vertical and curvilinear lengths (generally made in one-piece) of the first track and of the oblique length of the second track, usually by rivets; therefore the horizontal lengths of the two tracks are assembled to the curvilinear length and the oblique length, respectively, and they are firstly attached to each other by means of screwed or welded plates and then, as a whole, to the ceiling of the room to be closed by the door, by means of hanging plates and screws.

This arrangement makes known frames difficult to assemble, as well as to disassemble, for example in case of replacement of track lengths. Moreover, because many separate lengths are present to be attached to the upright jamb, it may be difficult to obtain a proper alignment of the lengths forming the tracks; this is undesirable in that it may prevent the roller from sliding within the tracks and, as a result, the door can be prevented from properly opening and closing.

In US 6,006,814 a supporting frame for a sectional door comprising a sliding track is described, the latter being attached to a door jamb, substantially formed of a first vertical profile and a second horizontal profile connected to each other by means of a connecting element having a Y shape (cf . Fig. 3 and 4) . Particularly, the connecting element is coupled to the two profiles and it is kept hanging directly therefrom. This technical solution causes some drawbacks specially relating to the supporting frame assembly proving to be arduous and complicated, particularly in the perspective of ensuring a proper alignment between the two profiles for the proper sliding of the sectional door. Moreover, the supporting frame proves to be unstable and poorly reliable even during its use, in that misalignments can occur between the profiles.

Objects and summary of the invention

Therefore it is an object of the present invention to provide an innovative supporting frame for sectional doors able to solve easily and effectively one or more of the disadvantages of traditional solutions. Therefore the present invention refers to a supporting frame for a sectional door according to claim 1.

Particularly, the supporting frame comprises:

- a jamb intended to be attached vertically to a wall sidewards a passageway in which the sectional door is installed;

- a first guide track comprising in its turn a first profile extending vertically from a lower end of the jamb to define a vertical length of the track, and a second profile defining a curvilinear length and a horizontal length of the first guide track. Particularly, the first profile and the second profile of the first track are both made in one-piece and are connected one another and constrained to the jamb by means of at least one screw inserted simultaneously through the first and the second profiles .

Thus, the first guide track implements a continuous path composed of the series of vertical, curvilinear and horizontal lengths, intended to guide sliding rollers of panels forming the sectional door.

In detail, a so formed supporting frame enables the reduction and optimization of assembly/ disassembly operations, as well as the maintenance of the sectional door and it offers practical advantages over the supporting frames of the known art.

More precisely, the first guide track, composed solely of the two profiles, each as a whole and directly connected to the other without the aid of additional connecting members or profiles, enables to minimize the connecting areas of the track itself. This leads to establish a substantially smooth path, without disconnections. Accordingly, the sliding rollers transition over the track is smoother and noiseless.

Secondly, according to the above mentioned considerations, first and second profiles are both integral to the jamb by way of at least one screw joining and connecting them. In other words, the connecting area between the two profiles is made at the jamb which acts as a supporting frame to obtain a fixed, firm and aligned connection between the two profiles. This solution leads to a simple and quick assembly of the profiles forming the track of the supporting frame.

Preferably, the frame also comprises a second guide track constrained to the jamb upwards the first guide track and comprising a third profile defining an oblique length and a respective horizontal length, so that the second guide track implements a continuous path, intended to guide the sliding roller of a first panel of the panels of the sectional door, composed of the series of oblique and horizontal lengths. More preferably also the third profile is in one-piece; the jamb comprises a second threaded hole and the second track comprises a second screw able to be inserted in the second threaded hole for the attachment to the second track to the jamb.

In a preferred embodiment, the jamb comprises a first threaded hole and a second threaded hole. The first guide track comprises a first screw able to be inserted in the first threaded hole for attaching the first track to the jamb and the second guide track comprises a second screw able to be inserted in said second threaded hole for attaching the second track to the jamb. For instance the screws can be distinct and separate from the guide tracks, or they can be projections or threaded inserts integral to the corresponding track.

Preferably, both first and second threaded holes consist in a respective hole passing through the jamb and a respective threaded insert accommodated inside the hole. In this way, the assembly of the two profiles of the first guide track, as well as the assembly of the second guide track, takes place easily by way of using corresponding threaded inserts to be applied directly to the jamb without the aid of additional locking elements, such as nuts or the like. This aspect makes quicker and easier the assembly of the guide tracks, particularly enabling a single operator to work independently. Particularly, the operator can hold up each guide track or profile forming it by one hand and use the other hand to fasten the screw on the jamb.

Preferably, the first, second and third profiles have the same substantially C - shaped cross section.

In other words, the combination of the above mentioned technical features advantageously allows for a supporting frame to be assembled and disassembled easily and quickly, for example for maintenance or component replacement. Moreover the described frame, for example by virtue of curvilinear and oblique portions made as a whole with the respective horizontal portion and/ or due to the presence of threaded holes on the jamb, enables to minimize the misalignments during the assembling and to obtain tracks in which the rollers slide smoothly, minimizing shocks and frictions. It should be noted that first and second guide tracks are overall composed of three profiles; in detail, by simply bending the second and the third profiles, it is possible to get the curvilinear and oblique portions, respectively, while reducing production and assembly costs and restricting the interruption points in the tracks.

Preferably, the jamb has a preferably regular L-shaped cross section, and it comprises a first side intended to be attached to a wall beside the door (e.g. by screws inserted in proper through holes of the first side) and a second side, perpendicular to the first side, provided with the afore said first and second threaded holes.

In an independent aspect, the present invention also relates to a sectional door to open/ close a passageway according to claim 11. In detail, the sectional door comprises a pair of the previously described supporting frames, each intended to be attached to corresponding side walls opposed one another of the passageway, and a set of panels arranged in series and connected one to another by hinges allowing the rotation between adjacent panels along respective horizontal axes. Each panel is provided with sliding rollers, applied to its opposed side ends and inserted in the tracks of the two supporting frames. Therefore, the sectional door is movable between a closing position, in which it is pulled down in a vertical position and it intercepts at least partly the passageway, and an opening position, in which it is in a lifted up position and it clears at least partly said passageway.

Preferably the sectional door comprises an engine adapted to cause the door transition between the opening and closing positions. Brief description of the drawings

More details on the invention will be evident from the following of the description made with reference to the attached illustrative and not limitative drawings, wherein:

- figure 1 is a perspective view, with some parts removed, of a sectional door comprising a known supporting frame;

figure 2 is a side view of a supporting frame according to the present invention;

- figure 3 is a partial front view of the vertical jamb of the supporting frame of figure 2;

- figure 4 is a partial side view of the jamb of figure 3;

- figure 5 is a cross section of the jamb of figures 3 and 4;

- figure 6 is an enlargement of a portion of the frame of figure 2;

- figure 7 is a cross section of a track of the frame according to the present invention.

Detailed description of the invention

By way of example, in figure 1 , a sectional door 100 of the known art, with parts removed, is shown. Such a door enables the opening/ closing of a passageway and it comprises a pair of supporting frames each attached to a respective side wall 2 of the passageway (for clarity purposes only a side frame is shown; it is plain that an identical supporting frame is coupled to the opposite wall delimiting the passageway) . The door further comprises a set of panels 3 arranged in series and connected to each other by hinges allowing the rotation between adjacent panels along respective horizontal axes. Each horizontal panel is provided with sliding rollers 4, applied to its opposed side ends and inserted in the guide tracks of the two supporting frames. Therefore, the door is movable between a closing position, in which it is pulled down in a vertical position and it intercepts the passageway, and an opening position, in which it is in a lifted up position and it clears the passageway.

In figures 2-7 a supporting frame 1 according to the present invention is shown, designed for supporting a sectional door and for guiding the opening and closing movements thereof.

As evident particularly from figures 2 and 6, the supporting frame 1 comprises a jamb 5 to be attached, in a substantially vertical position, to a wall sidewards the passageway on which the sectional door is arranged. In a preferred embodiment, the supporting frame 1 further comprises a first guide track 10 and a second guide track 20, both constrained to the jamb 5. Particularly, the second guide track 20 can be used as supplementary track in comparison with the first guide track 10 to improve the operation of the sectional door, as described hereafter. Therefore, for operational purposes, the sectional door according to the present invention can also be implemented with the first guide track 10 only.

More particularly, the first guide track 10 comprises in its turn a first profile 11, extending vertically from a lower end 5a of the jamb and defining a vertical length 10a and a second profile 12 extending transversely with respect to the first profile 11 and determining a curvilinear length 10b and a horizontal length 10c of the guide track 10, respectively. Thus, the first track implements a continuous path guiding the sliding rollers of the sectional door panels 3, composed of the series of vertical 10a, curvilinear 10b and horizontal 10c lengths. The so formed supporting frame is operatively easier to assembly/ disassembly as well as structurally reliable and steady. In detail, the guide track obtained by the connection of only two profiles, each made as one piece, allows to minimize the connection areas. This entails a smoother path for the sliding rollers contacting a substantially continuous guide surface. Moreover, the solidity of the so formed guide track is ensured by the simple and also strong connection made at the jamb between the two profiles.

The second guide track 20 is attached to the jamb 5 upwards the first track 10 and it comprises a third profile 21 defining an oblique length 20a and a respective horizontal length 20b. Thus, the second track implements a continuous path guiding the sliding roller of the. first panel 3a of the sectional door , composed of the series of oblique 20a and horizontal 20b lengths. Furthermore the first, second and third profiles are made each in one- piece .

In the preferred embodiment, shown in figures, the jamb 5 comprises a first threaded hole 6 and a second threaded hole 7, and the first track comprises a first screw 15 able to be inserted in the first threaded hole to attach the first track to the jamb and the second track comprises a second screw 25 able to be inserted in the second threaded hole to attach the second track to the jamb.

Likewise, first and second threaded holes can be implemented each by means of a respective simple hole passing through the jamb and a respective threaded insert accommodated inside the hole.

As we can see from figure 7, the first, second and third profiles have the same cross section substantially having a C shape. More particularly, the profiles forming the tracks have each a channel-shaped lower side 40a, on which the rollers 4 of panels slide, an upper side 40b and an upright back portion 40c connecting the lower and upper sides; the jamb is attached to the track on this back portion .

As exemplarily illustrated in figures 3, 4 and 5, the jamb 5 has a preferably regular, L-shaped cross section and it comprises a first side 8 which is attached, in use, to the wall 2 sidewards the door; for this purpose the first side is provided with appropriate through holes (the slots 8a in figure 3) in which screws can be inserted for the fixing to the wall. Moreover, the jamb comprises a second side 9, orthogonal to the first side, provided with the afore said first 6 and second 7 threaded hole.

Preferably, the first side 8 of the jamb comprises holes 31 for coupling the jamb 5 integrally with a portal- like tubular frame, (not shown) that pre-exists on the wall, such as a frame used to fit wall and ceiling sizes to the installation of the supporting frame of the sectional door . In more details, the holes 31 are vertically aligned for coupling the jamb 5 simultaneously to a jamb and a horizontal spandrel of the tubular frame, so as to stabilize the tubular frame itself against oscillations.

The jamb extends from the lower end 5a, intended to be near the floor, to an upper end 5b, intended to be near the ceiling .

Preferably, the second side 9 of the jamb comprises, at the upper end 5b, holes 30 intended to assemble a bearing housing to be used for supporting the shaft on which torsion springs are mounted. In figure 7, holes 30 enable the assembling of a flanged support 31 provided with a bearing.

Preferably the second side 9 further comprises, at the upper end 5b thereof, a through hole 35 for the passage of electric cables through the second side itself. Advantageously, in use this provides a passage through the supporting frame, particularly useful in case of a jamb extending up to the ceiling.

Preferably, the jamb and the first, the second and the third profile are obtained by bending a metal sheet, preferably made of steel or aluminum.

Referring to figures 2 and 6, horizontal lengths of the second and third profiles are preferably made integral with each other by means of one or more brackets 45. Furthermore, the horizontal lengths are preferably attached to the ceiling by hanging plates (not shown) .