EP1945900B1 - Spring-holder device for roller shutters and gates - Google Patents
Spring-holder device for roller shutters and gates Download PDFInfo
- Publication number
- EP1945900B1 EP1945900B1 EP05813688A EP05813688A EP1945900B1 EP 1945900 B1 EP1945900 B1 EP 1945900B1 EP 05813688 A EP05813688 A EP 05813688A EP 05813688 A EP05813688 A EP 05813688A EP 1945900 B1 EP1945900 B1 EP 1945900B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- holder device
- disks
- hole
- winding shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/60—Spring drums operated only by closure members
Definitions
- the present invention refers to a spring-holder device for roller shutters and gates.
- roller shutters and gates can be enlived with winding systems composed of a fixed or rotating winding shaft; the winding system with fixed winding shaft is equipped with two or more, substantially cylindrical spring-holder boxes that are coaxial to the winding shaft and rotating thereon; function of these spring-holder boxes, on which a gate side is secured, is supporting and allowing to roll-up the gate around the winding shaft and containing the compensating spring of the spiral type, this latter one operating for counterbalancing, at least partially, the gate weight, returning, during the opening phase, the energy stored as torque during the closing phase, making thereby easier for an operator to move the gate.
- the known spring-holder boxes are generally composed of a containing case comprising two supporting disks, mutually spaced by a set of metallic tabs constrained thereto, each one equipped in its central position with a hole adapted to allow the shaft to pass; next to such hole, moreover, cages are secured for containing rolling rollers, similar to roller bearings but with a rather lower mechanical accuracy, adapted to decrease the rolling friction between shaft and spring-holder box when actuating the roller gate.
- All above-mentioned spring-holder box components are further universally manufactured with metallic material, typically a sheet, through a series of mechanical workings aimed to shear, drill and press it in order to finally come, after assembling, to the manufacture of the finished spring-holder box.
- FR-A-2 627 801 discloses a spring-holder device according to the preamble of claim 1.
- Object of the present invention is solving the above prior art problems by providing a spring-holder device for roller shutters and gates made of self-lubricating material that does not require the mechanical workings and the sliding rollers of the known spring-holder boxes.
- Another object of the present invention is providing a spring-holder device for roller shutters and gates composed of elements that can be composed and assembled upon installation, making their packaging, transport and storage extremely more convenient, efficient and easy.
- an object of the present invention is providing a spring-holder device for rolling shutters and gates that can be installed, removed or replaced without necessarily having to remove the winding shaft from its housings.
- a further object of the present invention is providing a spring-holder device for rolling shutters and gates that can, without specific modifications or variations when manufacturing it, be easily customised to its laying on shafts with different diameters.
- the spring-holder device 1 for rolling shutters and gates is composed of at least two gate-supporting disks 10a, 10b, that are substantially equal one another, each one equipped at its center with a through-hole 12 adapted to allow the passage of a winding shaft (not shown) and quick-connection securing means 14 of a plurality of spacers 16 adapted to equally connect and to suitably space the two disks 10a, 10b one from the other, in order to create between them an adequate space to house a compensating spring; this particular arrangement allows the spring-holder devide 1 according to the present invention to be able to be decomposed, and to be easily assembled when installing it.
- Each disk 10a, 10b is further preferably equipped with at least three spokes 18 that are suitable mutually spaced and separated by hollow spaces, each one of the spokes 18 being adapted to connect the external perimeter edge of its own disk with the external circumferential wall of the hole 12, in order to stiffen the structure of the spring-holder device 1 and to discharge the forces induced by weight and actuation of the roller gate connected therewith; in the embodiment of the present invention shown in the Figures, it is possible to note that the spokes 18 are preferably five. Moreover, the above securing means 14 are preferably arranged in a portion of each spoke 18 next to the external circumference of its own disk 10a, 10b.
- each spacer 16 is preferably equipped, on each of its two opposite ends, with restraining means adapted to engage the respective securing means 14 of the disks 10a, 10b.
- each restraining means is composed of a supporting portion 16d, substantially orthogonal to the main development plane of the spacer 16, equipped with a supporting tooth 16b and with a securing tooth 16c, each one aimed to engage a respective slit 14b, 14c with which each securing means 14 of the disks 10a, 10b is equipped.
- each supporting portion 16d of these latter ones with an external perimeter with a trapezoidal shape, adapted to be inserted into a housing 19 whose edge has a similar shape that is complementary thereto and that surrounds each securing means 14.
- a longitudinal rib 16e that preferably joins together the two opposite supporting portions 16d.
- one of the spacers 16 is adapted to allow securing one end of a compensating spring, whose other end is traditionally secured to the winding shaft.
- the spring-holder device 1 is preferably made of a self-lubricating material, above all on the surface of the hole 12 in contact with the winding shaft, that, reducing the friction, allows avoiding the use of traditional sliding rollers, and of a lightweight material, still more preferably a plastic material that has the above characteristics and guarantees the due sturdiness and fatigue resistance.
- a self-lubricating material above all on the surface of the hole 12 in contact with the winding shaft, that, reducing the friction, allows avoiding the use of traditional sliding rollers, and of a lightweight material, still more preferably a plastic material that has the above characteristics and guarantees the due sturdiness and fatigue resistance.
- Delrin 100® manufactured by company DuPont of Nemours (France)
- the adapter 70 is a bush characterised by an external circumference that is substantially equal to the one of the hole 12 and by an internal circumference that is substantially equal to the one of the winding shaft and is adapted to be concentrically inserted on the winding shaft and in the hole 12 and to be secured to this latter one through hooking means, preferably composed of at least one tab 72 that is inserted into at least one respective slit (not shown) obtained inside the hole 12 itself, thereby allowing to install the device 1 on a winding shaft whose diameter is less than the diameter of the hole 12, without necessarily having to manufacture the device 1 suitably for each winding shaft diameter.
- each disk 10a, 10b is composed of two half-disks respectively 101a, 102a and 101b, 102b being kept mutually joined through securing means 80 such as at least one screw, one bolt or one pin: in such arrangement, it is obvious that it is possible to apply or remove the device 1 from a winding shaft without the need of having to free at least one end of the shaft.
- the spring-holder device 1 is characterised by disks 10a, 10b having their respective diameters preferably included between 100 mm and 300 mm, still more preferably between 130 mm and 280 mm.
- the spacers 16, instead than in plastic material, can be made of metallic material, for example steel, guaranteeing thereby still lower costs.
- the device 1 has all the following properties:
Abstract
Description
- The present invention refers to a spring-holder device for roller shutters and gates.
- As known, roller shutters and gates (hereinbelow briefly called globally "gates") can be enlived with winding systems composed of a fixed or rotating winding shaft; the winding system with fixed winding shaft is equipped with two or more, substantially cylindrical spring-holder boxes that are coaxial to the winding shaft and rotating thereon; function of these spring-holder boxes, on which a gate side is secured, is supporting and allowing to roll-up the gate around the winding shaft and containing the compensating spring of the spiral type, this latter one operating for counterbalancing, at least partially, the gate weight, returning, during the opening phase, the energy stored as torque during the closing phase, making thereby easier for an operator to move the gate.
- The known spring-holder boxes are generally composed of a containing case comprising two supporting disks, mutually spaced by a set of metallic tabs constrained thereto, each one equipped in its central position with a hole adapted to allow the shaft to pass; next to such hole, moreover, cages are secured for containing rolling rollers, similar to roller bearings but with a rather lower mechanical accuracy, adapted to decrease the rolling friction between shaft and spring-holder box when actuating the roller gate.
- All above-mentioned spring-holder box components are further universally manufactured with metallic material, typically a sheet, through a series of mechanical workings aimed to shear, drill and press it in order to finally come, after assembling, to the manufacture of the finished spring-holder box.
FR-A-2 627 801 - As previously described, the known spring-holder boxes however have the following, several disadvantages:
- the metallic rolling rollers, after a first step of gate use in which they efficiently reduce the friction, due to the deposit of dust, residuals, fouling and/or mechanical distortion, physiologically tend to reduce their efficiency, till they are blocked, damaging the external shaft surface and making extremely fatiguing, if not impossible, to actuate the roller gate; moreover, due to the presence of rollers, it is necessary to provide for the manufacture of different boxes with different hole and roller-holder case sizes depending on the different shaft diameters on which they must be installed;
- in case of box malfunction due to the breakage of the spring contained therein, or, as previously mentioned, to the roller wear, it is necessary to provide for the replacement of the box itself: in this situation it is mandatory to remove the shaft from its own seat in order to free one end thereof and thereby allow withdrawing the faulty box and inserting a new box, with obvious waste of time and resources;
- the use of metallic material for their manufacture, particularly sheet, requires a high number of mechanical workings that negatively affect the finished product cost;
- the spring-holder box is typically marketed as assembled, that is, due to the actual extremely high occupied volume as compared with the real volume of the single parts composing it, implies a relevant waste of space, and consequently resources, as regards packaging, carriage and storage.
- Object of the present invention is solving the above prior art problems by providing a spring-holder device for roller shutters and gates made of self-lubricating material that does not require the mechanical workings and the sliding rollers of the known spring-holder boxes.
- Another object of the present invention is providing a spring-holder device for roller shutters and gates composed of elements that can be composed and assembled upon installation, making their packaging, transport and storage extremely more convenient, efficient and easy.
- Moreover, an object of the present invention is providing a spring-holder device for rolling shutters and gates that can be installed, removed or replaced without necessarily having to remove the winding shaft from its housings.
- A further object of the present invention is providing a spring-holder device for rolling shutters and gates that can, without specific modifications or variations when manufacturing it, be easily customised to its laying on shafts with different diameters.
- The above and other object and advantages of the invention, as will appear from the following description, are obtained by a spring-holder device for rolling shutters and gates as claimed in claim 1. Preferred embodiments and non-trivial variations of the present invention are the subject of the dependent claims.
- The present invention will be better described by some preferred embodiments thereof, provided as a non-limiting example, with reference to the enclosed drawings, in which:
-
FIG. 1 shows a sectional view of a supporting disk of an embodiment of the spring-holder device for rolling shutters and gates according to the present invention; -
FIG. 2 shows a side view of the spring-holder device disk ofFIG. 1 ; -
FIG. 3 shows the three main views of one of the spacers of the spring-holder device according to the present invention; -
FIG. 4 shows a sectional view of the spring-holder device according to the present invention as assembled; -
FIG. 5 shows a side view of the spring-holder device ofFIG. 4 ; -
FIG. 6 shows a sectional view and a front view of an adapter of the spring-holder device according to the present invention; -
FIG. 7 shows a side view of another embodiment of the spring-holder device according to the present invention; and -
FIG. 8 shows a sectional view of the spring-holder device ofFIG. 7 . - With reference to the Figures, it is possible to note that the spring-holder device 1 for rolling shutters and gates is composed of at least two gate-supporting
disks hole 12 adapted to allow the passage of a winding shaft (not shown) and quick-connection securing means 14 of a plurality ofspacers 16 adapted to equally connect and to suitably space the twodisks - Each
disk spokes 18 that are suitable mutually spaced and separated by hollow spaces, each one of thespokes 18 being adapted to connect the external perimeter edge of its own disk with the external circumferential wall of thehole 12, in order to stiffen the structure of the spring-holder device 1 and to discharge the forces induced by weight and actuation of the roller gate connected therewith; in the embodiment of the present invention shown in the Figures, it is possible to note that thespokes 18 are preferably five. Moreover, theabove securing means 14 are preferably arranged in a portion of each spoke 18 next to the external circumference of itsown disk - As it is possible to note in particular from
FIG. 3 , eachspacer 16 is preferably equipped, on each of its two opposite ends, with restraining means adapted to engage therespective securing means 14 of thedisks portion 16d, substantially orthogonal to the main development plane of thespacer 16, equipped with a supportingtooth 16b and with a securingtooth 16c, each one aimed to engage arespective slit 14b, 14c with which each securing means 14 of thedisks slits 14b, 14c a substantially "T"-shaped projection 17 is preferably arranged and is adapted to reinforce the coupling between each slit 14c and its respective securingtooth 16c. Moreover, in order to make the securing between thesecuring means 14 of thedisks spacers 16 further more stiff and reliable, it is preferable to provide each supportingportion 16d of these latter ones with an external perimeter with a trapezoidal shape, adapted to be inserted into ahousing 19 whose edge has a similar shape that is complementary thereto and that surrounds each securing means 14. In order to further stiffen thespacer 16, it is possible to provide it with alongitudinal rib 16e that preferably joins together the two opposite supportingportions 16d. - Moreover, one of the
spacers 16 is adapted to allow securing one end of a compensating spring, whose other end is traditionally secured to the winding shaft. - As previously mentioned, the spring-holder device 1 according to the present invention is preferably made of a self-lubricating material, above all on the surface of the
hole 12 in contact with the winding shaft, that, reducing the friction, allows avoiding the use of traditional sliding rollers, and of a lightweight material, still more preferably a plastic material that has the above characteristics and guarantees the due sturdiness and fatigue resistance. For such purpose, it has been preferable, and complying with all desired requirements aimed to simultaneously obtain the necessary reliability and competitive final costs, to use a material called Delrin 100® manufactured by company DuPont of Nemours (France), even if obviously other functionally equivalent materials can and will be able to be used. - It is further possible to provide for the adoption of an
adapter 70, like the one shown in particular inFIG. 6 , that allows using the same device 1 universally on shafts having different diameters: in fact, theadapter 70 is a bush characterised by an external circumference that is substantially equal to the one of thehole 12 and by an internal circumference that is substantially equal to the one of the winding shaft and is adapted to be concentrically inserted on the winding shaft and in thehole 12 and to be secured to this latter one through hooking means, preferably composed of at least onetab 72 that is inserted into at least one respective slit (not shown) obtained inside thehole 12 itself, thereby allowing to install the device 1 on a winding shaft whose diameter is less than the diameter of thehole 12, without necessarily having to manufacture the device 1 suitably for each winding shaft diameter. - In an alternative embodiment of the spring-holder device 1 according to the present invention shown by
FIGs. 7 and 8 , notwithstanding everything that has been previously disclosed, eachdisk securing means 80 such as at least one screw, one bolt or one pin: in such arrangement, it is obvious that it is possible to apply or remove the device 1 from a winding shaft without the need of having to free at least one end of the shaft. - Taking into account the reference market requests, but only merely as a non-limiting example, the spring-holder device 1 according to the present invention is characterised by
disks - According to a further variation of the invention, the
spacers 16, instead than in plastic material, can be made of metallic material, for example steel, guaranteeing thereby still lower costs. - As already previously stated, it is easy to understand that the device 1 has all the following properties:
- it can be easily and economically manufactured since it does not require numerous and different mechanical workings as occurs for traditional spring-holder boxes;
- it can be simply and economically realised since it does not require the application of sliding rollers;
- it allows an extreme rationalisation of volumes both for packaging and for transport, since it can be decomposed into its main elements, which does not imply useless wastes of space, and can be easily composed when installing it; substantially, for assembling the spring-holder device 1 according to the present invention, it is enough to insert the
spacers 16 into their respective securing means of thedisks adapter 70; - due to the use of
adapters 70 with different diameters, it is possible to use the same device 1 with different shaft diameters, thereby avoiding to have to manufacture disks withdifferent holes 12, and the consequent risk of having useless stocks of the device 1 which is less demanded, and further enjoying the benefits and advantages of mass-production economies.
Claims (12)
- Spring-holder device (1) for roller shutters and gates, such spring-holder device (1) being divided into parts that can be mutually composed, said spring-holder device (1) comprising at least two, substantially equal, supporting disks (10a, 10b) for a shutter or gate, each one of said disks (10a, 10b) being equipped in its own central portion with a through-hole (12) adapted to allow a passage of a fixed winding shaft of said shutter or gate, and with a plurality of spacers (16) adapted to equally connect and to suitable space said two disks (10a, 10b) one from another, said disks (10a, 10b) being adapted to rotate around said winding shaft,
characterised in that:- said spring-holder device (1) is made of lightweight and self-lubricating material,- said spring-holder device (1) is further equipped with quick-connection securing means (14) of said plurality of spacers (16) to said disks (10a, 10b),- each one of said disks (10a, 10b) is equipped with a plurality of spokes (18), each one adapted to connect an external perimetral edge of its own disk (10a, 10b) to an external circumferential wall of said hole (12),- said securing means (14) are arranged in a portion of each spoke (18) next to an external circumference of each disk (10a, 10b), and- said spacers (16) are made of metallic material, for example steel. - Spring-holder device (1) according to claim 1,
characterised in that said spokes (18) are three and are arranged at the same distance one from another perpendicular to the circumference of the disks (10a, 10b). - Spring-holder device (1) according to claim 1,
characterised in that each one of said spacers (16) is equipped on each of its two opposite ends with restraining means adapted to engage said respective securing means (14) of said disks (10a, 10b). - Spring-holder device (1) according to claim 3,
characterised in that said restraining means are composed of a supporting portion (16d), that is substantially orthogonal to a main development plan of said spacer (16) and is equipped with a supporting tooth (16b) and with a securing tooth (16c) aimed to respectively engage one of a pair of slits (14b, 14c) with which each one of said securing means (14) of said disks (10a, 10b) is equipped. - Spring-holder device (1) according to claim 4,
characterised in that between each pair of said slits (14b, 14c) a substantially "T"-spaced projection (17) is arranged and is adapted to reinforce a coupling between each one of said slits (14c) and a respective one of said securing teeth (16c). - Spring-holder device (1) according to claim 4,
characterised in that said supporting portion (16d) is equipped with an external perimeter with a substantially trapezoidal shape, that is adapted to be inserted in an housing (19) having an edge with a substantially trapezoidal shape surrounding each securing means (14) and complementary with said perimeter of said supporting portion (16d). - Spring-holder device (1) according to claim 1,
characterised in that said spacer (16) is equipped with a longitudinal rib (16e) adapted to join two opposite ones of said supporting portions (16d). - Spring-holder device (1) according to claim 1,
characterised in that said lightweight and self-lubricating material is a plastic material. - Spring-holder device (1) according to claim 1,
characterised in that it comprises an adapter (70) which is adapted to be concentrically inserted onto said winding shaft and into said hole (12) and to be secured to said hole (12) through hooking means. - Spring-holder device (1) according to claim 9,
characterised in that said hooking means comprise at least one tab (72) arranged on an external circumferential wall of said adapter (70) and at least one respective restraining slit inside said hole (12), said tab (72) and said restraining slit being adapted to mutually engage. - Spring-holder device (1) according to claim 1,
characterised in that each one of said disks (10a, 10b) is composed of two half-disks (101a, 102a; 101b, 102b). - Spring-holder device (1) according to claim 1,
characterised in that said disks (10a, 10b) have a diameter preferably included between 100 mm and 300 mm, still more preferably between 130 mm and 280 mm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2005/000591 WO2007043069A1 (en) | 2005-10-11 | 2005-10-11 | Spring-holder device for roller shutters and gates |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1945900A1 EP1945900A1 (en) | 2008-07-23 |
EP1945900B1 true EP1945900B1 (en) | 2010-01-20 |
Family
ID=36579712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05813688A Not-in-force EP1945900B1 (en) | 2005-10-11 | 2005-10-11 | Spring-holder device for roller shutters and gates |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1945900B1 (en) |
AT (1) | ATE455930T1 (en) |
DE (1) | DE602005019117D1 (en) |
WO (1) | WO2007043069A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2627801B1 (en) * | 1988-02-29 | 1992-02-07 | Zurfluh Feller Sa Ets | IMPROVEMENTS TO METAL CURTAINS AND ROLL-UP GRIDS BALANCED BY FLAT SPRINGS |
US6164428A (en) * | 1999-08-23 | 2000-12-26 | Joel Berman Associates, Inc. | Wrap spring shade operator |
AUPQ473399A0 (en) * | 1999-12-16 | 2000-01-20 | Neumann Steel Pty Limited | A spool |
FR2826688B1 (en) * | 2001-06-28 | 2004-01-23 | Bmj | ANTI-FALL DEVICE FOR A WINDING CLOSURE |
DE602004006836D1 (en) * | 2004-04-28 | 2007-07-19 | Mario Gnaccarini | Device for fixing a spring for blinds and gates |
-
2005
- 2005-10-11 DE DE602005019117T patent/DE602005019117D1/en active Active
- 2005-10-11 EP EP05813688A patent/EP1945900B1/en not_active Not-in-force
- 2005-10-11 AT AT05813688T patent/ATE455930T1/en not_active IP Right Cessation
- 2005-10-11 WO PCT/IT2005/000591 patent/WO2007043069A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP1945900A1 (en) | 2008-07-23 |
WO2007043069A1 (en) | 2007-04-19 |
ATE455930T1 (en) | 2010-02-15 |
DE602005019117D1 (en) | 2010-03-11 |
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