EP3321467B1 - Progressive braking device for closures - Google Patents

Progressive braking device for closures Download PDF

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Publication number
EP3321467B1
EP3321467B1 EP16382526.8A EP16382526A EP3321467B1 EP 3321467 B1 EP3321467 B1 EP 3321467B1 EP 16382526 A EP16382526 A EP 16382526A EP 3321467 B1 EP3321467 B1 EP 3321467B1
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EP
European Patent Office
Prior art keywords
shaft
braking device
spring
progressive braking
movable element
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
Application number
EP16382526.8A
Other languages
German (de)
French (fr)
Other versions
EP3321467A1 (en
Inventor
Xavier CABELLO RODRÍGUEZ
Salvador CABELLO LÓPEZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aicon Sistemas SL
Original Assignee
Aicon Sistemas SL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aicon Sistemas SL filed Critical Aicon Sistemas SL
Priority to ES16382526T priority Critical patent/ES2759438T3/en
Priority to EP16382526.8A priority patent/EP3321467B1/en
Publication of EP3321467A1 publication Critical patent/EP3321467A1/en
Application granted granted Critical
Publication of EP3321467B1 publication Critical patent/EP3321467B1/en
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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
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • 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

Definitions

  • the present invention relates to a progressive braking device, especially designed for use in fire protection systems, in particular, in closures with vertical displacement, for example, firewall curtains.
  • closures use of vertical movement, for example, firewalls curtains, smoke curtains and the like.
  • the firewall curtains and smoke curtains have gear motors, with their control panel, to perform the function of winding and unwinding.
  • the control of the movement speed of the closure is performed by the gear motor itself, which involves higher costs in the manufacturing of such closures.
  • WO03001018 A1 discloses a friction device, applied to roll-up curtains and the like, includes a tubular roller, on which the curtain rolls up, and which is rotatably carried on a horizontal axis.
  • the friction device includes a threaded shaft, situated axially inside the roller and connected to the roller by interposition of an angular speed reducer group.
  • US20100242364 A1 discloses a method and apparatus for driving a roller-shutter door having a drive mechanism. The method comprises the activation of a circuit in response to an external stimuli to a switch.
  • an object of the present invention is to provide a progressive braking device designed to close the closure by gravity at a controlled speed not using neither a motor nor its corresponding control panel.
  • the progressive braking device for closures comprises a first shaft whose rotation causes the movement of the closure, and it also comprises a second shaft integral in rotation with the first shaft, and a movable element along said second shaft against the action of at least one spring, so that said at least one spring slows the rotation of said first and second shafts.
  • said second shaft is at least partially threaded
  • said movable element comprises a threaded hole for its engagement to said second shafts.
  • the progressive brake device of the present invention also comprises, that between said first and second shafts a bearing is placed.
  • the progressive braking device also comprises a plurality of support rods between said movable element and said bearing, said movable element being displaceable also along said support rods.
  • said at least one spring is a single spring and it is placed around said second shaft.
  • said at least one spring is a plurality of springs, each of which is disposed around each support rod, and each of said support rods comprises a stop element in contact with one of the ends of each spring.
  • the movement of the enclosure can be made by gravity at a controlled speed not using neither a motor nor its control panel for minimizing manufacturing costs, and ensuring the closing of the curtain or closures according to an external order (fire signal, manual pushbutton, external peripherals, etc.).
  • the progressive brake device comprises a first shaft 1 that holds a curtain or closure (not shown in the figures) and whose rotation causes the movement of the curtain or closure.
  • the principle of the present invention is based on converting the rotational movement of the first shaft 1 that holds a curtain or closure with vertical movement into a rectilinear movement, in which an elastic mechanical strength is introduced, that as the curtain unwinds or lowers the closure, the gravitational acceleration decreases and controls its closing speed.
  • the progressive braking device comprises a socket 2 in one end of the first shaft 1, which is integral with a second shaft 3 concentric with said first shaft 1.
  • This second shaft 3 is connected to a fixed element 4, for example, a plate of the drawer where the curtain or closure is housed, which is provided with a bearing 5 for allowing the rotation of the socket 2 and the second shaft 3.
  • Said second shaft 3 is at least partially threaded and on said thread a movable element 6 provided with a threaded hole is screwed. This movable element 6 is displaced along the second shaft 3, as will be explained below.
  • This movable element 6 is attached to the bearing 5 by a plurality of support rods 7, and between the fixed element 4 and the movable element 6 a spring 8 is placed, which provides resistance to linear advancement of the movable element 6, obtaining a resistance to the rotation speed of the first shaft 1.
  • the spring 8 causes a braking effect on the movement of the closure or curtain, without using any motor, with the corresponding savings on the costs of the braking device.
  • FIG 2 a second embodiment of the braking device according to the present invention is shown.
  • the same reference numbers are used to identify the same elements as in the previous embodiment.
  • the main difference of this second embodiment from the previous embodiment is that more than one spring 8 is disposed around at least some of the rods 7. To this end, the ends of each spring 8 are in contact with the movable element 6 and a stop 9 placed at the end of the rod 7 farthest from the fixed element 4.
  • the movable element 6 performs a movement from the right to the left (according to figure 2 ) during the braking of the curtain or closure, unlike the reverse movement of the movable element 6 in the above embodiment.

Description

  • The present invention relates to a progressive braking device, especially designed for use in fire protection systems, in particular, in closures with vertical displacement, for example, firewall curtains.
    • Background of the invention
  • In the field of security and fire protection is usual the use of closures use of vertical movement, for example, firewalls curtains, smoke curtains and the like.
  • The firewall curtains and smoke curtains have gear motors, with their control panel, to perform the function of winding and unwinding.
  • The use of these motors is that, in case of failure of energy supply, the closure or curtain can be closed at a controlled speed to avoid damages by impact to people or materials, which is known as safety system against gravity failures.
  • The control of the movement speed of the closure is performed by the gear motor itself, which involves higher costs in the manufacturing of such closures.
  • WO03001018 A1 discloses a friction device, applied to roll-up curtains and the like, includes a tubular roller, on which the curtain rolls up, and which is rotatably carried on a horizontal axis. The friction device includes a threaded shaft, situated axially inside the roller and connected to the roller by interposition of an angular speed reducer group.
  • US20100242364 A1 discloses a method and apparatus for driving a roller-shutter door having a drive mechanism. The method comprises the activation of a circuit in response to an external stimuli to a switch.
  • Therefore, an object of the present invention is to provide a progressive braking device designed to close the closure by gravity at a controlled speed not using neither a motor nor its corresponding control panel.
    • Disclosure of the invention
  • With progressive braking device said disadvantages are solved, presenting other advantages that will be described below.
  • The progressive braking device for closures according to the present invention comprises a first shaft whose rotation causes the movement of the closure, and it also comprises a second shaft integral in rotation with the first shaft, and a movable element along said second shaft against the action of at least one spring, so that said at least one spring slows the rotation of said first and second shafts.
  • Advantageously, said second shaft is at least partially threaded, and said movable element comprises a threaded hole for its engagement to said second shafts.
  • The progressive brake device of the present invention also comprises, that between said first and second shafts a bearing is placed.
  • The progressive braking device according to the present invention also comprises a plurality of support rods between said movable element and said bearing, said movable element being displaceable also along said support rods.
  • According to a first embodiment, said at least one spring is a single spring and it is placed around said second shaft.
  • According to a second alternative embodiment, said at least one spring is a plurality of springs, each of which is disposed around each support rod, and each of said support rods comprises a stop element in contact with one of the ends of each spring.
  • Thanks to these features, the movement of the enclosure can be made by gravity at a controlled speed not using neither a motor nor its control panel for minimizing manufacturing costs, and ensuring the closing of the curtain or closures according to an external order (fire signal, manual pushbutton, external peripherals, etc.).
    • Brief description of the drawings
  • For better understanding of what has been disclosed, some drawings in which, schematically and only by way of a non-limiting example, a practical case of embodiment is shown.
    • Figure 1 is a longitudinal sectional view of the device according to progressive braking according a first embodiment; and
    • Figure 2 is a longitudinal sectional view of the device according to progressive braking according a second embodiment.
    Description of a preferred embodiment
  • As shown in Figure 1, the progressive brake device according to the present invention comprises a first shaft 1 that holds a curtain or closure (not shown in the figures) and whose rotation causes the movement of the curtain or closure.
  • The principle of the present invention is based on converting the rotational movement of the first shaft 1 that holds a curtain or closure with vertical movement into a rectilinear movement, in which an elastic mechanical strength is introduced, that as the curtain unwinds or lowers the closure, the gravitational acceleration decreases and controls its closing speed.
  • To this end, the progressive braking device according to the present invention comprises a socket 2 in one end of the first shaft 1, which is integral with a second shaft 3 concentric with said first shaft 1.
  • This second shaft 3 is connected to a fixed element 4, for example, a plate of the drawer where the curtain or closure is housed, which is provided with a bearing 5 for allowing the rotation of the socket 2 and the second shaft 3.
  • Said second shaft 3 is at least partially threaded and on said thread a movable element 6 provided with a threaded hole is screwed. This movable element 6 is displaced along the second shaft 3, as will be explained below.
  • This movable element 6 is attached to the bearing 5 by a plurality of support rods 7, and between the fixed element 4 and the movable element 6 a spring 8 is placed, which provides resistance to linear advancement of the movable element 6, obtaining a resistance to the rotation speed of the first shaft 1.
  • Thus, the spring 8 causes a braking effect on the movement of the closure or curtain, without using any motor, with the corresponding savings on the costs of the braking device.
  • In figure 2 a second embodiment of the braking device according to the present invention is shown. For simplicity reasons, the same reference numbers are used to identify the same elements as in the previous embodiment.
  • The main difference of this second embodiment from the previous embodiment is that more than one spring 8 is disposed around at least some of the rods 7. To this end, the ends of each spring 8 are in contact with the movable element 6 and a stop 9 placed at the end of the rod 7 farthest from the fixed element 4.
  • Furthermore, the movable element 6 performs a movement from the right to the left (according to figure 2) during the braking of the curtain or closure, unlike the reverse movement of the movable element 6 in the above embodiment.
  • Although reference has been made to specific embodiments of the invention, it is apparent to a person skilled in the art that the described progressive braking device is susceptible of numerous variations and modifications, and that all the details mentioned can be replaced by other technically equivalents, without departing from the scope of protection defined by the appended claims.

Claims (5)

  1. Progressive braking device for closures, comprising a first shaft (1) whose rotation causes the movement of the closure, it also comprising a second shaft (3) integral in rotation with the first shaft (1), and a movable element (6) along said second shaft (3) against the action of at least one spring (8), so that said at least one spring (8) slows the rotation of said first and second shafts (1, 3),
    wherein between said first and second shafts (1, 3) a bearing (5) is placed,
    characterized in that the progressive braking device comprises a plurality of support rods (7) between said movable element (6) and said bearing (5), said movable element (6) being displaceable also along said support rods (7).
  2. Progressive braking device for closures according to claim 1, wherein said second shaft (3) is at least partially threaded, and said movable element (6) comprises a threaded hole its engagement to said second shaft (3).
  3. Progressive braking device for closures according to claim 1, wherein said at least one spring (8) is a single spring and is placed around said second shaft (3).
  4. Progressive braking device for closures according to claim 1, wherein said at least one spring (8) is a plurality of springs (8), each being placed around each support rod (7).
  5. Progressive braking device for closures according to claim 4, wherein each of said support rods (7) comprises a stop element (9) in contact with one of the ends of each spring (8).
EP16382526.8A 2016-11-11 2016-11-11 Progressive braking device for closures Active EP3321467B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES16382526T ES2759438T3 (en) 2016-11-11 2016-11-11 Progressive braking device for locks
EP16382526.8A EP3321467B1 (en) 2016-11-11 2016-11-11 Progressive braking device for closures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16382526.8A EP3321467B1 (en) 2016-11-11 2016-11-11 Progressive braking device for closures

Publications (2)

Publication Number Publication Date
EP3321467A1 EP3321467A1 (en) 2018-05-16
EP3321467B1 true EP3321467B1 (en) 2019-09-04

Family

ID=57737633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16382526.8A Active EP3321467B1 (en) 2016-11-11 2016-11-11 Progressive braking device for closures

Country Status (2)

Country Link
EP (1) EP3321467B1 (en)
ES (1) ES2759438T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2256569C (en) * 1996-05-23 2005-07-05 Sunproject S.R.L. Elastic means for rolling up a roller curtain
ITBO20010396A1 (en) * 2001-06-21 2002-12-21 Carl Emil Felix Minder CLUTCH DEVICE FOR ROLLING SHUTTERS AND SIMILAR
US8069896B2 (en) * 2009-03-24 2011-12-06 Alpine Overhead Doors, Inc. Method and apparatus for driving a roller shutter door

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3321467A1 (en) 2018-05-16
ES2759438T3 (en) 2020-05-11

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