EP1977071B1 - Method for moving a roller shutter at a controlled speed along an upward or downward path and associated actuating system - Google Patents
Method for moving a roller shutter at a controlled speed along an upward or downward path and associated actuating system Download PDFInfo
- Publication number
- EP1977071B1 EP1977071B1 EP07704038.4A EP07704038A EP1977071B1 EP 1977071 B1 EP1977071 B1 EP 1977071B1 EP 07704038 A EP07704038 A EP 07704038A EP 1977071 B1 EP1977071 B1 EP 1977071B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller shutter
- actuating system
- braking
- disk
- upward
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 7
- 230000033001 locomotion Effects 0.000 claims description 37
- 230000009471 action Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000004913 activation Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05DÂ AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
- E05Y2201/21—Brakes
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05DÂ AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
-
- 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
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B2009/807—Brakes preventing fast screen movement
-
- 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
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions
Definitions
- the invention relates to a method for moving a roller shutter at a controlled speed along an upward or downward path and an associated actuating system, in particular an actuating system for roller shutters, sun awnings or the like, of the type powered by a low dc voltage.
- a particular type of actuating system for roller shutters is one which has a dc voltage for powering its motor ranging between about 12 and 24 Volts.
- the invention concerns such actuating systems, which shall be referred to as DC actuating systems.
- DC actuating systems are useful in cases where it is required to automate roller shutters by means of actuating systems which are powered using very low voltages, for safety reasons or when no public mains supply is present.
- the drawback of DC actuating systems is the difference in speed which they impart to the roller shutter during the upward or downward movement.
- the dc motor of DC actuating systems is not driven by a converter, which would allow speed control by means of modulation of the dc voltage, but simply the power is applied to the terminals of the motor either directly or with reversed polarity, depending on the desired upward or downward movement of the roller shutter. Therefore, the power supplied by the motor is the same, but the load changes because, during the upward movement, the motor raises the roller shutter and, during the downward movement, it is drawn along by its weight. The result is a downward speed of even five times the upward speed (for example from 6 to 30 rpm on the driving shaft) and proportional to the rolling movement of the roller shutter.
- EP 1582681A1 discloses an actuating system according to the preamble of claim 1.
- the main object of the present invention is to provide a method for moving a roller shutter at a controlled speed along an upward or downward path. Another object is to provide a DC actuating system with a uniform performance as regards movement of the roller shutter. Yet another object is to reduce the costs and the difficulty of production of the said DC actuating system.
- the invention may use a braking device on the shaft (either on an associated kinematic chain or on the roller shutter itself which is for example radio controlled) which moves the roller shutter, so as to limit and/or regulate the downward speed and, if required, the upward speed thereof. Even though normally the speed to be regulated is the downward speed, it may be useful, in some cases, to have to limit with a brake also the upward speed. It is possible, and this is a further advantage of the invention, to modify the braking device normally mounted on the actuating system so as to perform the braking function not only in the rest position of the roller shutter, when it is at a standstill, but also during its movement. In this way it is possible to obtain optimum integration of the components, without having to use any second braking device.
- Fig. 1 shows the components of an actuating system 10 according to the invention, which are enclosed inside a tubular body (not shown) of the actuating system 10. These components are as follows:
- Figures 2 and 3 show the components described assembled together, highlighting their relative arrangement. It should be noted, in particular in Fig. 3 , that the ends 50a, 50b of the pin 50 are arranged in an approximately midway position between inclined surfaces 44a, 44b and 45a, 45b, which are formed by shaping the inner walls of the cavity 42, as will be explained more clearly below. In Fig. 3 only the two inclined surfaces 44b and 45b are visible.
- Figures 6 to 9 show in detail the outer and inner constructional form of the support piece 16. It comprises a circular retaining disc 30 inside which the disk 20 can be positioned and which tapers towards its base, extending with a cylindrical collar 38 which in turn has inside it the axial cavity 42.
- the cavity 42 extends inside the support piece 16, is partly closed at the top by an element 25 for engagement with/supporting the spindle 26 and has a profile. which is symmetrical with respect to the cross-sectional centre plane D-D of the support piece 16, whence the use of suffixes "a" and "b" as references to indicate symmetrical parts. For the sake of simplicity reference is made on occasions to parts present only on one wall of the cavity 42.
- the cavity 42 has an entry opening which is composed, in plan view, of a rectangular slot 46 ( Fig. 6 ) which has two identical elongated, flat, lateral walls 41b, 48b on the long side and which has, added in the centre thereof, a circular empty space 47 with a diameter greater than the short side of the slot 46, with two semi-circular walls 49a, 49b.
- the entry opening of the cavity 42 substantially corresponds to the form of the assembly consisting of the end 12a of the shaft 12 and the pin 50, namely the overall dimensions of the slot 46 and the empty space 47 are such as to receive the end 12a and the pin 50, as shown in Figure 3 .
- the cavity 42 comprises four identical inclined surfaces 44a, 44b and 45a, 45b which are opposite and symmetrical to each other with respect to the plane D-D and situated respectively two on either side of the cavity 42 and two facing each other.
- the semi-circular walls 49b, 49a continue inside the cavity 42, maintaining their radius of curvature, and terminate respectively in semi-circular walls 43b, 43a with a smaller surface area.
- the inclined surfaces 44b and 45b (and correspondingly the inclined surfaces 44a and 45a on the other side of the cavity 45) respectively connect the walls 41b and 48b with flat walls 51b and 53b which are slightly inclined with respect to the lie of the plane D-D. Consequently, the walls 51b, 53b and 43b with the symmetrical walls 51a, 53a and 43b define a terminal part 55 of the cavity 42 which is widened with respect to the inlet.
- the pin 50 is inserted inside the cavity 42 and its ends 50a, 50b are arranged in front of the inclined surfaces 44a, 44b and 45a, 45b.
- the longitudinal axis of the pin 50 has been indicated by S, it being shown alone in Fig. 9 in order to highlight there the positioning of the pin 50 inside the cavity 42.
- Figures 8 and 9 show some important dimensions of the disk 16 which are reproduced below with the corresponding numerical values: Depth C1 of the walls 41 b, 48b, 41 a, 48a: 7 mm Maximum dimension C2 of cavity 42: 15 mm Radius C3 of the walls 43a, 43b: 2 mm Width C4 of short side of the slot 46: 3.1 mm Diameter C5 of the empty circular space 47: 7 mm
- the inclination of the inclined surfaces 44a, 44b and 45a, 45b with respect to the axis T is about 10 degrees, while the pin 50 has a diameter of 2 mm and length of 14 mm.
- the graph in Fig. 11 shows the characteristic curves of the electric motor of the actuating system 10.
- the values shown are the power consumption P-in, the efficiency R, the speed V, the current consumption I and the power output P-out as a function of the torque CC.
- its coefficient of friction may be between 0.3 and 0.45.
- the actuating system 10 is characterized by two functioning modes: one for the upward movement and one for the downward movement.
- the weight force of the roller shutter produces a torque opposing the torque supplied by the motor 12, while during the downward movement the two torques become concordant.
- the actuating system 10 functions, owing to the action of the abovementioned torques, in the following manner (particular reference should be made to Figures 4 and 5 ).
- the spring 14 pushes the disk 16 and the braking element 20 against the engaging disk 18, and the static friction present between the braking element 20 and the disk 18 prevents relative rotation thereof. Therefore, the spindle 26 connected to the disk is locked and the roller shutter is kept stationary.
- the pin 50 pushes up to the end of the associated inclined surfaces 44a, 45b or 44b, 45a and imparts to the disk 16 a displacement with an axial direction towards the resilient means 14. Said displacement results in total separation of the braking element 20 from the disk 18, thereby resulting in the end of the braking action.
- the torque of the motor 12 is fully transmitted to the spindle 26 and from there to the roller shutter.
- the torque produced by the motor 12 and the torque produced by the weight force of the roller shutter are added together and therefore do not allow the pin 50 to reach the end of the inclined surfaces 44a, 45b or 44b, 45a, therefore there is not complete separation of the braking element 20 from the disk 18.
- the braking action is not sufficient to interrupt/stop the movement of the roller shutter but, by designing the components with correct dimensions, its downward speed may be controlled.
- a simple modification for example to the form and/or inclination of the inclined surfaces 44a, 44b, 45a, 45a, allows varied operation of the actuating system to be obtained, including maintaining the braking action also during the upward movement of the roller shutter or a different response of the braking system, so as to adapt it to any roller shutter or motor.
- the system from this point of view can be easily calibrated, for example using resilient means with an adjustable thrusting force (it is possible to use a ring nut which is screwed onto the shaft 12 and against which the spring 14 presses; by screwing the ring nut the length at rest of the spring 14 and therefore its thrusting force against the disk 16 may be varied).
- the invention may envisage a different braking system, for example with the insertion of one or more braking elements depending on the movement of the roller shutter.
- a different braking system for example with the insertion of one or more braking elements depending on the movement of the roller shutter.
- two braking devices may be used, each optimized to perform a single braking function.
- the braking system may also be situated outside the tubular body, as already mentioned, for example arranged in guides which define the path of the roller shutter during the upward or downward movement.
- This system may be a shoe-type brake or an electromagnetic brake duly controlled in a synchronized manner by the same control unit which controls the electric motor. Independently of the type of braking system, the latter may intervene during the movement of the roller shutter either continuously or intermittently at given time intervals.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Description
- The invention relates to a method for moving a roller shutter at a controlled speed along an upward or downward path and an associated actuating system, in particular an actuating system for roller shutters, sun awnings or the like, of the type powered by a low dc voltage.
- A particular type of actuating system for roller shutters is one which has a dc voltage for powering its motor ranging between about 12 and 24 Volts. The invention concerns such actuating systems, which shall be referred to as DC actuating systems. DC actuating systems are useful in cases where it is required to automate roller shutters by means of actuating systems which are powered using very low voltages, for safety reasons or when no public mains supply is present. There are also the not insignificant further advantages of being able to use a battery power supply for the actuating system, of having very limited overheating of the motor, and of the need for only two power supply wires, instead of three, because there is no earth.
- The drawback of DC actuating systems is the difference in speed which they impart to the roller shutter during the upward or downward movement. For cost-related reasons the dc motor of DC actuating systems is not driven by a converter, which would allow speed control by means of modulation of the dc voltage, but simply the power is applied to the terminals of the motor either directly or with reversed polarity, depending on the desired upward or downward movement of the roller shutter. Therefore, the power supplied by the motor is the same, but the load changes because, during the upward movement, the motor raises the roller shutter and, during the downward movement, it is drawn along by its weight. The result is a downward speed of even five times the upward speed (for example from 6 to 30 rpm on the driving shaft) and proportional to the rolling movement of the roller shutter. If the roller shutter descends very rapidly it may result in a potentially dangerous situation where there is the risk of impact against persons, in addition to the undesirable technical effect of a roller shutter which moves at speeds which are not controlled by the system. In DC actuating systems with a converter stage the movement of the roller shutter is uniform, but at the cost of a system which is considerably more complex, prone to malfunctions and costly.
EP 1582681A1 discloses an actuating system according to the preamble of claim 1. - The main object of the present invention is to provide a method for moving a roller shutter at a controlled speed along an upward or downward path. Another object is to provide a DC actuating system with a uniform performance as regards movement of the roller shutter. Yet another object is to reduce the costs and the difficulty of production of the said DC actuating system.
- These objects are achieved with a method according to claims 12-14 for moving a roller shutter at a controlled speed along an upward or downward path. The method is implemented by an actuating system for a roller shutter, sun awning or the like according to claims 1-11.
- The invention may use a braking device on the shaft (either on an associated kinematic chain or on the roller shutter itself which is for example radio controlled) which moves the roller shutter, so as to limit and/or regulate the downward speed and, if required, the upward speed thereof. Even though normally the speed to be regulated is the downward speed, it may be useful, in some cases, to have to limit with a brake also the upward speed. It is possible, and this is a further advantage of the invention, to modify the braking device normally mounted on the actuating system so as to perform the braking function not only in the rest position of the roller shutter, when it is at a standstill, but also during its movement. In this way it is possible to obtain optimum integration of the components, without having to use any second braking device.
- The advantages of a device according to the invention will in any case become clearer from the following description of a preferred embodiment which refers to the accompanying drawing in which:
-
Fig. 1 is an exploded view of part of an actuating system for roller shutters comprising the device according to the invention; -
Fig. 2 is a view of the components of the actuating system ofFig. 1 assembled; -
Fig. 3 is a cross-sectional view along the plane A-A ofFig. 2 ; -
Figs. 4 and 5 are cross-sectional views along the plane B-B ofFig. 3 for two operating conditions of the device; -
Fig. 6 is an axonometric view of the rear of a disk present in the actuating system ofFig. 1 ; -
Fig. 7 is an axonometric view of the front of the disk aofFig. 6 ; -
Fig. 8 is a cross-sectional view along the plane C-C ofFig. 6 ; -
Fig. 9 is a cross-sectional view along the plane D-D ofFig. 6 ; -
Fig. 10 shows a spring of the actuating system ofFig. 1 ; -
Fig. 11 shows a graph plotting the characteristics of the actuating motor ofFig. 1 . -
Fig. 1 shows the components of anactuating system 10 according to the invention, which are enclosed inside a tubular body (not shown) of the actuatingsystem 10. These components are as follows: - a
shaft 12 of an electric motor (not shown), coaxial with the tubular body and supported bysuitable bearings 13, only one of which is shown; - resilient means 14 (a spring here) which push a rotating
friction disk 16, which forms a seat for anannular braking element 20 with a high coefficient of friction (for example made of brake lining material) towards the fixed surface of an engaging disk 18 (for example made of brake lining material) fixed on acage 24 which is in turn enclosed inside the tubular body. Thedisk 16 is slidable axially with respect to theshaft 12 between two positions: a first position where thebraking element 20 is in contact with theengaging ring 18 and a second position where they are separated, so as to be able to be selectively engaged in order to brake themotor 12; - a
toothed transmission spindle 26 which is rigidly joined to thedisk 16 and which passes through thebraking element 20, theengaging disk 18 and thecage 24, so as to interconnect kinematically with a reduction gear connected to the roller shutter (both not shown). -
motion transmission members 22 situated between theshaft 12 and thesupport disk 16 and comprising apin 50 which is inserted into acorresponding hole 52 in oneend 12a of theshaft 12 and which interacts with shaped walls of acavity 42 formed in thedisk 16, as will be better described below. The overall function of themembers 22 is to move thedisk 16 and separate theelement 20 from theengaging ring 18 when theshaft 12 rotates, keeping them instead in contact when theshaft 12 is stationary, by means of theresilient means 14 pressing both against thebearing 13 and on acollar 38 of thedisk 16, so as to push the latter towards theengaging ring 18. Other parts for transmission of the motion may also be used, provided that they are functionally the same. -
Figures 2 and3 show the components described assembled together, highlighting their relative arrangement. It should be noted, in particular inFig. 3 , that theends 50a, 50b of thepin 50 are arranged in an approximately midway position betweeninclined surfaces cavity 42, as will be explained more clearly below. InFig. 3 only the twoinclined surfaces -
Figures 6 to 9 show in detail the outer and inner constructional form of thesupport piece 16. It comprises a circularretaining disc 30 inside which thedisk 20 can be positioned and which tapers towards its base, extending with acylindrical collar 38 which in turn has inside it theaxial cavity 42. Thecavity 42 extends inside thesupport piece 16, is partly closed at the top by anelement 25 for engagement with/supporting thespindle 26 and has a profile. which is symmetrical with respect to the cross-sectional centre plane D-D of thesupport piece 16, whence the use of suffixes "a" and "b" as references to indicate symmetrical parts. For the sake of simplicity reference is made on occasions to parts present only on one wall of thecavity 42. Thecavity 42 has an entry opening which is composed, in plan view, of a rectangular slot 46 (Fig. 6 ) which has two identical elongated, flat,lateral walls 41b, 48b on the long side and which has, added in the centre thereof, a circular empty space 47 with a diameter greater than the short side of the slot 46, with twosemi-circular walls 49a, 49b. The entry opening of thecavity 42 substantially corresponds to the form of the assembly consisting of theend 12a of theshaft 12 and thepin 50, namely the overall dimensions of the slot 46 and the empty space 47 are such as to receive theend 12a and thepin 50, as shown inFigure 3 . - The
cavity 42 comprises four identicalinclined surfaces cavity 42 and two facing each other. - The
semi-circular walls 49b, 49a continue inside thecavity 42, maintaining their radius of curvature, and terminate respectively insemi-circular walls 43b, 43a with a smaller surface area. - The
inclined surfaces inclined surfaces 44a and 45a on the other side of the cavity 45) respectively connect thewalls 41b and 48b withflat walls 51b and 53b which are slightly inclined with respect to the lie of the plane D-D. Consequently, thewalls symmetrical walls 51a, 53a and 43b define aterminal part 55 of thecavity 42 which is widened with respect to the inlet. - As can be seen from
Figures 3 and9 , thepin 50 is inserted inside thecavity 42 and itsends 50a, 50b are arranged in front of theinclined surfaces Figs. 3 and9 the longitudinal axis of thepin 50 has been indicated by S, it being shown alone inFig. 9 in order to highlight there the positioning of thepin 50 inside thecavity 42. - Constructional data of the actuating
system 10 are now provided below by way of example.Figures 8 and 9 show some important dimensions of thedisk 16 which are reproduced below with the corresponding numerical values:Depth C1 of the walls 41 b, 48b, 41 a, 48a:7 mm Maximum dimension C2 of cavity 42: 15 mm Radius C3 of the walls 43a, 43b:2 mm Width C4 of short side of the slot 46: 3.1 mm Diameter C5 of the empty circular space 47: 7 mm - The inclination of the
inclined surfaces pin 50 has a diameter of 2 mm and length of 14 mm. - The constructional characteristics of the
spring 14, to be read with reference toFig. 10 , are as follows:Length of free spring LO: 19 mm Diameter of wire L1: 1 mm Outer diameter L2: 7 mm Middle diameter L3: 6 mm Inner diameter L4: 5 mm Spring index: 6 Length of pre-stressed spring: 16.853 mm Length of spring under full load: 8.267 mm Operating stroke: 8.586 mm Operative spring length: 10.414 mm Pitch L5 of free spring: 3.5 mm Spring modulus: 9.3171 N/mmj Compression of pre-stressed spring: 2.15 mm Compression of operative spring: 56.49% Maximum permissible compression of spring: 65% Space L6 between spring turns: 2.5 mm - The graph in
Fig. 11 shows the characteristic curves of the electric motor of the actuatingsystem 10. The values shown are the power consumption P-in, the efficiency R, the speed V, the current consumption I and the power output P-out as a function of the torque CC. - As regards the braking characteristics of the material which forms the
braking element - The actuating
system 10 is characterized by two functioning modes: one for the upward movement and one for the downward movement. During the upward movement, the weight force of the roller shutter produces a torque opposing the torque supplied by themotor 12, while during the downward movement the two torques become concordant. - The
actuating system 10 functions, owing to the action of the abovementioned torques, in the following manner (particular reference should be made toFigures 4 and 5 ). When theshaft 12 is stationary (Fig. 4 ), thespring 14 pushes thedisk 16 and thebraking element 20 against the engagingdisk 18, and the static friction present between thebraking element 20 and thedisk 18 prevents relative rotation thereof. Therefore, thespindle 26 connected to the disk is locked and the roller shutter is kept stationary. - When the
shaft 12 rotates (Fig. 5 ), two different conditions arise, depending on the direction of movement of the roller shutter (upward or downward movement). In both cases, thepin 50, which is rotated by themotor 12, strikes with itsends 50a, 50b two inclined surfaces and presses against them. The inclined surfaces in question are thepairs - During the upward movement, the torque supplied by the
motor 12 and the torque created by the weight force of the roller shutter have opposite directions. Therefore, thepin 50 pushes up to the end of the associatedinclined surfaces resilient means 14. Said displacement results in total separation of thebraking element 20 from thedisk 18, thereby resulting in the end of the braking action. Thus the torque of themotor 12 is fully transmitted to thespindle 26 and from there to the roller shutter. - During the downward movement the driving torque of the
motor 12 and the torque due to the weight force of the roller shutter are concordant. Upon activation of themotor 12 thepin 50 is pushed towards the associatedinclined surfaces disk 16 until the static friction present between thebraking element 20 and the disk 18 - which is proportional to the pressure of the resilient means 14 - decreases to the point that it is no longer sufficient to stop their relative rotation. Thedisk 16 starts to slide on thedisk 18 braked by the dynamic friction and the downward movement of the roller shutter therefore starts. The torque produced by themotor 12 and the torque produced by the weight force of the roller shutter are added together and therefore do not allow thepin 50 to reach the end of theinclined surfaces braking element 20 from thedisk 18. The braking action is not sufficient to interrupt/stop the movement of the roller shutter but, by designing the components with correct dimensions, its downward speed may be controlled. - In order to brake and stop the roller shutter it is sufficient to stop the movement of the
motor 12 so that thepin 50 returns into the position shown inFig. 4 by means of the action of theresilient means 14. - A simple modification, for example to the form and/or inclination of the
inclined surfaces - The system from this point of view can be easily calibrated, for example using resilient means with an adjustable thrusting force (it is possible to use a ring nut which is screwed onto the
shaft 12 and against which thespring 14 presses; by screwing the ring nut the length at rest of thespring 14 and therefore its thrusting force against thedisk 16 may be varied). - Clearly the invention may envisage a different braking system, for example with the insertion of one or more braking elements depending on the movement of the roller shutter. Instead of using the same braking device both for the rest condition of the roller shutter and for its movement, two braking devices may be used, each optimized to perform a single braking function.
- Finally, the braking system may also be situated outside the tubular body, as already mentioned, for example arranged in guides which define the path of the roller shutter during the upward or downward movement. This system may be a shoe-type brake or an electromagnetic brake duly controlled in a synchronized manner by the same control unit which controls the electric motor. Independently of the type of braking system, the latter may intervene during the movement of the roller shutter either continuously or intermittently at given time intervals.
Claims (13)
- Actuating system (10) for a roller shutter, sun awning or the like, comprising motor means (12) able to move the roller shutter along an upward or downward path,
wherein
during the upward movement the weight force of the roller shutter produces a torque opposing the torque supplied by the motor (12), while during the downward movement the two torques become concordant, and
comprising braking means (16, 20) able to brake the roller shutter during the upward and downward movement,
said braking means (16, 20) being adapted to keep stationary the roller shutter when the shaft (12) is stationary;
said braking means (16, 20) being adapted to maintain the braking action also during the upward movement of the roller shutter, during activation of the motor (12) the braking action of the braking means (16, 20) being not sufficient to interrupt/stop the movement of the roller shutter;
characterized in that
said braking means (16, 20) comprises a rotating friction disk (16), which forms a seat for an annular braking element (20), said seat comprising a circular retaining disk (30) inside which the annular braking element (20) is positioned, said rotating friction disk (16) being pushable by resilient means (14) towards the fixed surface of an engaging disk (18), which is fixed on a cage (24). - Actuating system (10) according to claim 1, characterized in that said actuating system (10) comprises- a toothed transmission spindle (26) which is rigidly joined to the disk (16) and which pass trough the braking element (20), the engaging disk (18) and the cage (24) so as to interconnect kinematically with a reduction gear connected to the roller shutter; and- motion transmission members (22) situated between the shaft (12) and the support disk (16) comprising a pin (50) which is inserted into a corresponding hole (52) in one end (12a) of the shaft (12) and which interact with shaped walls of a cavity (42) formed in the disk (16).
- Actuating system (10) according to Claim 1, in which the braking means (16, 22) are activated in a continuous manner in order to brake the roller shutter at least during the downward movement.
- Actuating system (10) according to Claim 1, in which the braking means (16, 20) are activated intermittently so as to brake the roller shutter at least during the downward movement.
- Actuating system (10) according to any one of the preceding claims, in which the braking means (16, 20) are also designed to lock the roller shutter when it is stationary.
- Actuating system (10) according to any one of the preceding claims, in which the motor means comprise an electric motor (12) which is powered with a dc voltage applied directly or with reversed polarity depending on the desired upward or downward movement of the roller shutter and the shaft (12) of which transmits the movement to the roller shutter.
- Actuating system (10) according to Claim 6, in which the dc power supply voltage is less than 30 V.
- Actuating system (10) according to Claim 6 or 7, in which the braking means (16, 20) are coupled to the shaft of the motor (12).
- Actuating system (10) according to Claim 8, in which the braking means (16, 20) comprise a friction disk (200) which can be selectively engaged so as to brake the motor (12).
- Actuating system (10) according to Claim 1, in which the braking means (16, 20) are arranged along the upward or downward path of the roller shutter.
- Actuating system (10) according to Claims 1, in which the braking means (16, 20) are arranged on the roller shutter.
- Method for moving a roller shutter at a controlled speed along an upward or downward path, comprising the steps of:- setting in motion the roller shutter by means of motor means (12);- braking the roller shutter using braking means independent of the action of the motor means (12), so as to maintain a desired speed of the roller shutter along the path,said braking means (16, 20) comprising a rotating friction disk (16), which forms a seat for an annular braking element (20), said seat comprising a circular retaining disc (30) inside which the disk (20) is positioned, said rotating friction disk (16) being pushable by resilient means (14) towards the fixed surface of an engaging disk (18), which is fixed on a cage (24).
- Method according to Claim 12, characterized in that the braking means (16, 20) act with friction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTV20060008 ITTV20060008A1 (en) | 2006-01-24 | 2006-01-24 | METHOD FOR HANDLING A ROLLER WITH A SPEED OF CONTROLLED ALONG A ROUTE OF CLIMBING OR DESCENT AND ITS OPERATION |
PCT/EP2007/050570 WO2007085576A1 (en) | 2006-01-24 | 2007-01-19 | Method for moving a roller shutter at a controlled speed along an upward or downward path and associated actuating system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1977071A1 EP1977071A1 (en) | 2008-10-08 |
EP1977071B1 true EP1977071B1 (en) | 2014-08-20 |
Family
ID=37993525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07704038.4A Active EP1977071B1 (en) | 2006-01-24 | 2007-01-19 | Method for moving a roller shutter at a controlled speed along an upward or downward path and associated actuating system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1977071B1 (en) |
ES (1) | ES2524055T3 (en) |
IT (1) | ITTV20060008A1 (en) |
WO (1) | WO2007085576A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012200037B4 (en) | 2012-01-03 | 2018-08-02 | Alfred Schellenberg Gmbh | Drive device for winding and unwinding a darkening device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1234750A (en) * | 1914-09-18 | 1917-07-31 | Variety Mfg Company | Elevator-door. |
FR2868460B1 (en) * | 2004-03-31 | 2008-01-11 | Somfy Soc Par Actions Simplifi | MECHANISM FOR MANEUVERING A DOOR, USE OF A BRAKE IN SUCH A MECHANISM AND METHOD FOR CONTROLLING A MOTOR TORQUE IN SUCH A MECHANISM |
-
2006
- 2006-01-24 IT ITTV20060008 patent/ITTV20060008A1/en unknown
-
2007
- 2007-01-19 EP EP07704038.4A patent/EP1977071B1/en active Active
- 2007-01-19 WO PCT/EP2007/050570 patent/WO2007085576A1/en active Application Filing
- 2007-01-19 ES ES07704038.4T patent/ES2524055T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
ITTV20060008A1 (en) | 2007-07-25 |
EP1977071A1 (en) | 2008-10-08 |
ES2524055T3 (en) | 2014-12-03 |
WO2007085576A1 (en) | 2007-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7882759B2 (en) | Gear drive unit | |
US8051737B2 (en) | Worm gear drive | |
EP1837555B1 (en) | Electric direct-acting actuator and electric brake device | |
US11799355B2 (en) | Braking device for an electric drive motor | |
US6763918B1 (en) | Actuator having compact gear reduction | |
JP4864582B2 (en) | Automatic torque switching device | |
JP5319687B2 (en) | Gear stage for vehicle seat | |
JP4662591B2 (en) | Electromechanical wheel brake device | |
EP0983937A3 (en) | No-back brake for an aircraft actuator | |
CN103025554A (en) | Electric motor and brake assembly | |
US6435319B1 (en) | Disc brake actuator | |
US20030136615A1 (en) | Disk-brake and torque-transmitting device | |
US20040149079A1 (en) | Actuator | |
KR20020059680A (en) | Actuator comprising a sleeve support | |
GB2471373A (en) | Hammer action generation in a hand-held power tool | |
EP1977071B1 (en) | Method for moving a roller shutter at a controlled speed along an upward or downward path and associated actuating system | |
US5090771A (en) | Reclining device for vehicular seat | |
JP2011074946A (en) | Disc brake | |
CN1327147C (en) | Torque controlled brake | |
JP2006501414A (en) | Wedge loading mechanism for traction drive | |
US20030032518A1 (en) | Gear reduction unit, and sub-assembly for unit | |
JPH06137346A (en) | Brake motor sub-assembly for disc brake | |
CN1922777B (en) | Electric drive unit | |
CN101128351B (en) | Actuator apparatus | |
JP6505025B2 (en) | Drive device for comfort comprising a transmission drive unit and a transmission drive unit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080610 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20110829 |
|
DAX | Request for extension of the european patent (deleted) | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 602007038193 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: E06B0009840000 Ipc: E06B0009800000 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: E06B 9/90 20060101ALI20140312BHEP Ipc: E06B 9/84 20060101ALI20140312BHEP Ipc: E06B 9/80 20060101AFI20140312BHEP |
|
INTG | Intention to grant announced |
Effective date: 20140411 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 683591 Country of ref document: AT Kind code of ref document: T Effective date: 20140915 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602007038193 Country of ref document: DE Effective date: 20141002 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2524055 Country of ref document: ES Kind code of ref document: T3 Effective date: 20141203 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 683591 Country of ref document: AT Kind code of ref document: T Effective date: 20140820 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20140820 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141121 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141222 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141120 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141220 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602007038193 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150131 |
|
26N | No opposition filed |
Effective date: 20150521 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150119 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150119 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150131 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150119 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150119 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20070119 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140820 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20230127 Year of fee payment: 17 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230616 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20240201 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20240111 Year of fee payment: 18 Ref country code: FR Payment date: 20240125 Year of fee payment: 18 |