Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
  • H01H19/02—Details
  • H01H19/10—Movable parts; Contacts mounted thereon
  • H01H19/14—Operating parts, e.g. turn knob
  • H01H19/18—Operating parts, e.g. turn knob adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
  • H01H19/186—Operating parts, e.g. turn knob adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift with travelling nuts
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
• • 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
  • E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/60—Power-operated mechanisms for wings using electrical actuators
  • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
  • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
  • E05F15/668—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D 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
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/622—Suspension or transmission members elements
  • E05Y2201/696—Screw mechanisms
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D 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
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/32—Position control, detection or monitoring
  • E05Y2400/322—Position control, detection or monitoring by using absolute position sensors
  • E05Y2400/324—Switches
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D 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
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/32—Position control, detection or monitoring
  • E05Y2400/322—Position control, detection or monitoring by using absolute position sensors
  • E05Y2400/328—Position control, detection or monitoring by using absolute position sensors of the linear type
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D 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
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/32—Position control, detection or monitoring
  • E05Y2400/35—Position control, detection or monitoring related to specific positions
  • E05Y2400/354—End positions
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D 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
  • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
  • E05Y2600/40—Mounting location; Visibility of the elements
  • E05Y2600/458—Mounting location; Visibility of the elements in or on a transmission member
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D 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
  • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D 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
  • E05Y2900/00—Application of doors, windows, wings or fittings thereof
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D 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
  • E05Y2900/00—Application of doors, windows, wings or fittings thereof
  • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
  • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
  • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
  • H01H3/161—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid
  • H01H3/163—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid associated with locking or manipulating means of the closing member

Definitions

• the present invention relates to an innovative limit switch device to be inserted into the electric circuit of a movement operator for moving movable elements, such as windable roll-up shutters and the like.
• the invention also relates to a movement operator and to a method for setting a limit-switch point in a movement operator.
• limit-switch devices are known provided with two cursors coupled with a threaded bar commanded to rotate by the rotation of the operator, so that they slide simultaneously on the bar in a manner corresponding to the movement of the driven element.
• a detecting sensor is associated (in general a microswitch) , which reports when the respective cursor has reached the position corresponding to the limit-switch position desired for the driven element.
• a detecting sensor is associated (in general a microswitch) , which reports when the respective cursor has reached the position corresponding to the limit-switch position desired for the driven element.
• the correct setting of the limit-switch positions is reached via various attempts and the time employed and the setting difficulty are considerable.
• the general object of the present invention is to overcome the aforesaid drawbacks by providing a limit switch device, a movement operator provided with such a device and a method for setting a limit-switch point in a movement operator, that enable the limit-switch point to be set automatically, with just a movement of the element driven by the movement operator.
• a limit switch device to be inserted into the electric circuit of an operator for moving movable elements, such as windable roll-up shutters and the like, comprising a rotating control shaft, two detecting sensors each corresponding to one of two end movement positions to be detected by the alternating rotation of the control shaft, two cursors each associated with one of the two detecting sensors and coupled with a threaded bar commanded to rotate by said control shaft to produce alternating translation of the cursors to the respective sensor as far as a detection point of the cursor by the sensor, characterized in that it comprises in combination, for running an automatic procedure for setting the point of the limit switch for one of the sensors, deactivating means for deactivating detection of the corresponding cursor for the sensor and arresting means for arresting the movement of the corresponding cursor towards the sensor in the point of normal detection thereof by the sensor.
• an operator unit for moving movable elements such as windable roll-up shutters and the like, comprising a movement reduction gear that is operationally associated with a limit-switch unit according to what is disclosed above to define two end stop positions of the element moved by the reduction gear with an automatic setting of the limit-switch point of at least one of such two end positions.
• a method for setting a limit-switch point in a movement operator for moving a movable element such as a windable roll-up shutter and the like, and provided with a limit switch device that is inserted into the electric circuit of the operator, which is kinematically sensitive to the movement of the movable element and which comprises two detecting sensors, each associated with one of two end movement positions, and two cursors each associated with one of the two detecting sensors and coupled with a threaded bar that is commanded to rotate by the operator to produce alternating movement of the cursors to the respective sensor as far as a detection point of the cursor by the sensor, the method comprising the steps of: deactivating the action of the sensor corresponding to the limit-switch point that it is desired should be set; moving the movable element to the position corresponding to that of the limit-switch point that it is desired should be set, so as to move or maintain the corresponding cursor towards the point of normal detection thereof by the sensor
• FIG. 1 is a partially sectioned schematic view of a movement operator with a limit switch device according to the invention
• figure 2 is a partially sectioned limit-switch device along line II-II in figure 1;
• - figure 3 is a partial perspective view of a guide element in the limit-switch device; - figure 4 is a partial view of a zone of the limit-switch device in a normal operating condition.
• FIG 1 there is shown in longitudinal section a movement operator indicated generally by 10 of the type used for moving movable elements such as windable roll-up shutters and the like.
• This operator 10 comprising a movement reduction gear 11 and a limit switch device 12 operationally associated in a known manner causes the corresponding driving of the limit-switch device, which is provided with two detecting sensors 13, 14, each corresponding to one of two end movement positions to be detected.
• the sensors of the limit switch device are inserted in a known manner into the electric circuit of the reduction gear so as to enable the normal operation thereof between the two end stop positions established by the limit switch device.
• the sensors are made with limit microswitches .
• the operator 10 shown is of the type intended for being mounted directly on a rolling roller or shaft 15 of a roller shutter or similar windable elements.
• the operator comprises a wheel 16 with a toothed internal crown for. engaging a cog 17 of the reduction gear and a gear 18 splined on the control shaft 19 of the limit switch device.
• the rolling shaft 15 traverses axially the wheel 16 and is connected thereto to be rotated by the reduction gear.
• the wheel 16 is openable radially by means of a known system (not shown) to enable the operator to be mounted on the rolling shaft.
• a bar or threaded screw 20 is commanded to rotate by the control shaft 19 to produce a translation of two threaded cursors 21, 22 alternatively in one direction or the other on the bar towards or away from the respective sensor 13 or 14 as far as a detection point of the cursor by the sensor.
• each cursor activates the microswitch by pushing the perimeter thereof against a driving lever of the microswitch.
• the two cursors have the same thread to translate in a concordant manner on the threaded bar.
• the right-hand microswitch 14 supervises the determination of the closed position (completely unwound roll-up shutter) whilst the left-hand microswitch 13 supervises the determination of the open position (wound roll-up shutter) .
• the position of the limit switches has to be set and, in particular, a different distance between the cursors to increase or reduce the stroke between the two limit-switch positions. In prior-art devices, setting this distance and the position of the cursors on the threaded bar is the cause of a long and difficult manual settings, as indicated above.
• deactivating means 23 for deactivating the detection of the corresponding cursor 21 by the sensor 13 and stopping means 24 for stopping the movement of the cursor 24 in the point (shown in figure 1) that is normally detected by the sensor.
• the stopping means 24 for stopping the movement of the cursor comprises in combination an abutting element or bush 25 against which the cursor rests when it reaches said point of normal detection and releasing means 26 that enables the cursor to rotate 21 together with the threaded bar 20 when the cursor is pushed against the abutting element.
• the device comprises advantageously a guide 27 that is parallel to the threaded bar and cooperates with the cursor to normally to prevent the rotation thereof.
• the guide usually engages a notch 28 of a plurality of notches on the perimeter of the cursors so as to enable the cursors to slide axially but not to rotate.
• the releasing means comprises a corresponding zone 26 of the guide that is made to offer reduced resistance to the rotation of the cursor in said point of normal detection of the sensor. This resistance has a value that is such as to lock the rotation of the cursor when it moves freely but to permit the cursor to rotate together with the threaded bar when the cursor is pushed against the abutting element by the rotation of the bar.
• the reduced-resistance zone 26 is made of a plurality of tabs that are elastically yieldable in the rotation direction of the cursor.
• the cursor 21 when it reaches the point of normal detection of the limit switch sensor 13 thereof and is locked against further movement by the abutting element 25, starts to rotate with the screw flexing the yieldable tabs 26.
• opposite rotation of the screw 20 moves the cursor away from the abutting element, as the torque transmitted by the cursor is reduced to the point that it no longer flexes the tabs 26 and normal movement of the cursor along the guide is obtained.
• the cursors are also advantageously movable manually by driving a lever 36 that pivots the guide 27 far from interference with the cursors so as to enable the cursors to rotate manually on the threaded bar.
• the aforesaid deactivating means for deactivating detection of the cursor by the sensor comprises a support 28 that supports the sensor 13 and that is movable for commanding the sensor to move between a normal detection operating position (shown in figure 4) and the non-operating position (shown in figure 1).
• the movement from the non-operating position to the operating position is produced by a kinematic mechanism that is sensitive to the movement of the cursor 21 far from said point of normal detection.
• This kinematic mechanism comprises a driving lever 29 that is moved by the passage of the cursor 21 during the first movement thereof away from the point of normal detection of figure 1.
• the abutting element 25 moves from the operating position thereof (in which the cursor 21 rests against the abutting element 25 when in the position of normal detection of the limit switch) to movement of the support 28 of the sensor from the non-operating position to the operating position. This avoids any further interference of the abutting elements during normal operation of the operator .
• the method for setting a limit-switch point becomes very easy. Substantially, the action is deactivated of the sensor corresponding to the limit-switch point that it is desired should be set automatically and the movable element actuated by the operator is then moved to the position corresponding to that of the limit-switch point that it is desired should be set. This causes the corresponding cursor to be moved or maintained at the point of normal detection thereof by the sensor thereof owing to the fact that the cursor is prevented (by yielding of the connection that causes the cursor to be dragged due to the rotation of the threaded bar) from being able to proceed beyond that point.
• the movable element is taken to the limit-switch position opposite that to be set automatically.
• the opening microswitch 30 it is necessary for the opening microswitch 30 not to be initially activated (otherwise both microswitches would be activated simultaneously) and is thus in the lower position owing to the movable support 28.
• the closing cursor 14 moves to the left to the opening cursor 21, not being able to move left owing to the presence of the abutting element 25 that is an obstacle thereto and owing to the yieldability of the antirotation connection, rotates integrally with the threaded bar and does not move but remains in the limit-switch point.
• the fitter reverses the direction of automation motion (electrically or manually by acting on the roll-up shutter) and then also the threaded bar.
• the opening cursor 21 at the start of the movement towards the right advantageously triggers the device that locates the opening microswitch in the definitive operating position where it is activatable by the cursor 21 thereof during regular operation.
• the abutting bush 25 moves simultaneously to the non-operating position.
• the advancing block of the cursor can also be advanced by known means by disengaging thereof from the threaded bar rather than from the antirotation guide.
• the sensors can also be different from simple microswitches .
• they may be optical sensors, as is easily imaginable by those skilled in the art.
• Sensor detecting can also be deactivated electrically, by interrupting the signal emitted by the sensor or the effect thereof on the operator rather than by moving the sensor. Transmission of motion to the threaded bar can occur via kinematic connections that are other than those shown, as can be easily imagined by those skilled in the art.

Landscapes

• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
• Switches That Are Operated By Magnetic Or Electric Fields (AREA)
• Position Input By Displaying (AREA)
• Curtains And Furnishings For Windows Or Doors (AREA)
• Mechanisms For Operating Contacts (AREA)
• Keying Circuit Devices (AREA)
• Electronic Switches (AREA)
• Jib Cranes (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39620341

Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (1)

Citations (3)

Family Cites Families (1)

• 2007
  • 2007-03-13 IT IT000493A patent/ITMI20070493A1/it unknown
• 2008
  • 2008-03-11 MX MX2009009785A patent/MX2009009785A/es active IP Right Grant
  • 2008-03-11 RU RU2009135298/07A patent/RU2459304C2/ru not_active IP Right Cessation
  • 2008-03-11 CN CN200880014829XA patent/CN101675490B/zh not_active Expired - Fee Related
  • 2008-03-11 EP EP08716425A patent/EP2122646A1/de not_active Withdrawn
  • 2008-03-11 WO PCT/EP2008/001916 patent/WO2008110335A1/en active Application Filing
  • 2008-03-11 MY MYPI20093791A patent/MY163581A/en unknown

Patent Citations (3)

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