EP3095936B1 - Réducteur de fenêtre - Google Patents

Réducteur de fenêtre Download PDF

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Publication number
EP3095936B1
EP3095936B1 EP16170770.8A EP16170770A EP3095936B1 EP 3095936 B1 EP3095936 B1 EP 3095936B1 EP 16170770 A EP16170770 A EP 16170770A EP 3095936 B1 EP3095936 B1 EP 3095936B1
Authority
EP
European Patent Office
Prior art keywords
restrictor
window
mounting part
key
members
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
EP16170770.8A
Other languages
German (de)
English (en)
Other versions
EP3095936A1 (fr
Inventor
Peter Harrison
David Wellman
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.)
J Banks and Co Ltd
Original Assignee
J Banks and Co Ltd
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 J Banks and Co Ltd filed Critical J Banks and Co Ltd
Publication of EP3095936A1 publication Critical patent/EP3095936A1/fr
Application granted granted Critical
Publication of EP3095936B1 publication Critical patent/EP3095936B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
    • E05C17/32—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of two or more pivoted rods

Definitions

  • This invention relates to a window restrictor, and in particular to a window restrictor for a hinged window of a healthcare facility.
  • Opening windows are in widespread use in domestic and commercial buildings.
  • the windows are openable primarily to provide ventilation into a room of the building, but they also allow the egress of occupants during a fire for example.
  • Hinged windows in particular are mounted upon butt hinges or friction stays to pivot about a hinge axis (it being recognised that the hinge axis moves as a window supported on friction stays is opened), the axis being either vertical or horizontal depending upon the fitment of the window. Hinged windows are typically arranged to pivot outwardly relative to the room or building in which they are fitted.
  • the hinged window is securable in its closed position by way of an operating handle, the handle perhaps having a cockspur which can engage a keep mounted upon the frame surrounding the window.
  • the operating handle can engage a gearbox such as an espagnolette gearbox which can drive shoot bolts and/or additional locking elements into engagement with additional keeps.
  • a gearbox such as an espagnolette gearbox which can drive shoot bolts and/or additional locking elements into engagement with additional keeps.
  • a lockable handle i.e. the handle carries a lock which requires the insertion and rotation of the correct key in order to permit the handle to be rotated and the window to be opened.
  • Window restrictors can be disabled when desired so as to permit full opening of the window. Disabling of the restrictor may require the use of a key so that only persons having access to the key can open the window sufficiently to allow a person to pass through the window.
  • the known restrictors can in principle be used on most buildings, there is a particular concern in healthcare facilities that the known restrictors may not be able to prevent a determined person from overcoming a locked restrictor, either by exerting sufficient force to allow greater opening movement of the window, or by using tools to disable or remove the restrictor.
  • GB patent application 2 243 648 discloses a window restrictor having the features of the preamble of claim 1.
  • a window restrictor which is suitable for use on a window in a hospital, care home or other healthcare facility. Notwithstanding its primary utility in relation to healthcare facilities, it will be appreciated that the restrictor can be used on other establishments (domestic and commercial), as desired. In particular, it is an object of the present invention to reduce the likelihood of tampering when the restrictor is in the closed position. According to the invention, there is provided a window restrictor for an opening window, the window restrictor having:
  • “Inaccessible” in this context refers to the lack of access by a key or by a tool which might be used to seek to force the lock body to rotate. Making the keyhole inaccessible reduces the likelihood that the locking means will be tampered with when the restrictor is in the closed condition.
  • the first and second restrictor members are in their closed condition when the window is closed.
  • the opening movement of the window is restricted by the restrictor members moving to their opened conditions.
  • the length of the restrictor members determines the maximum distance by which the window may be opened in its restricted position, and (in the UK) is ideally 89 mm in accordance with the Department of Health guidance.
  • the key-operated locking means is activated to release the locking element from the first mounting part.
  • the first and second restrictor members are inflexible.
  • the first and second restrictor members are inextensible, where "inextensible” is to be interpreted as “substantially inextensible", or “inextensible under the expected forces”.
  • inextensible does not exclude members which can be extended by extreme force or to a degree which is insignificant in practice. The term is therefore to be interpreted as a practical limitation rather than a literal limitation.
  • the first mounting part and the second mounting part are adapted for surface mounting upon the window and surrounding frame.
  • window restrictors are designed for fitment into the gap between the window and frame so that they are not visible when the window is closed (and are only partially visible when the window is opened). Such window restrictors are therefore suited to domestic applications where a clean and unencumbered appearance of the window is desirable.
  • the limited size of the gap into which these window restrictors must be installed places a practical limitation upon their size and strength. Surface mounting avoids that limitation but is less aesthetically pleasing. In a healthcare facility, however, aesthetic considerations are less significant than security considerations. Also, a clearly visible restrictor might have additional benefits in dissuading a person from seeking to overcome the restrictor.
  • the first mounting part is secured by first fixings to the window or frame
  • the second mounting part is secured by second fixings to the other of the window and frame.
  • the first fixings and the second fixings are inaccessible when the restrictor is in the closed condition (where "inaccessible” in this context refers to the lack of access by a tool for the removal of the fixings). Making the fixings inaccessible reduces the likelihood that a person will seek to disable the restrictor by removing one or both of the mounting parts from the window and/or frame.
  • the first and/or second fixings are not visible when the restrictor is in the closed condition. Making the fixings not visible further reduces the likelihood of a person seeking to tamper with the fixings.
  • the fixings are inaccessible (and ideally not visible) when the restrictor is in its opened condition. In such embodiments, even if the window is opened to its restricted position the fixings are less likely to be tampered with.
  • the keyhole (and ideally the lock body) is not visible when the restrictor is in its closed condition.
  • the restrictor cannot be moved from its opened condition to its closed condition unless the key is removed from the lock body.
  • Such embodiments require the user to remove the key before the window is closed, so avoiding the possibility that the key is inadvertently left in place when the window is closed. The user is therefore less likely to forget to remove the key when the window is closed.
  • the locking element has a locking nose and the first mounting part has a catch which cooperates with the locking nose to secure the locking element to the first mounting part.
  • the catch is spring biased and the locking nose and/or catch is tapered so that the key is not required to secure the locking element to the first mounting part. Accordingly, if full opening movement of the window is required the restrictor can be disabled by the user with the correct key; the restrictor can subsequently be re-enabled by attaching the locking element to the first mounting part without use of the key.
  • the window restrictor 10 of the present invention has a first mounting part 12 which in this embodiment is mounted to a frame 14 surrounding the opening window 16.
  • the second mounting part 20 of the restrictor 10 is mounted to the window 16. It will be understood that in another (less preferred) embodiment the first mounting part could be mounted to the window and the second mounting part could be mounted to the frame.
  • the window 16 is a hinged window with the hinge axis being substantially vertical as drawn and at the opposing side of the window to that to which the restrictor 10 is fitted (the hinge axis of the window not being shown in Fig.1 ). Whilst it would be possible to fit the restrictor to a sliding window that is not preferred as the restrictor 10 has been designed specifically for use with hinged windows.
  • a first restrictor member 22 (see Fig.2 ) is pivotably connected to the first mounting part 12 and a second restrictor member 24 is pivotably connected to the second mounting part 20.
  • the first and second restrictor members 22, 24 are pivotably connected together, all of the pivoting connections having respecting pivot pegs 26a,b,c as shown. It will be understood that during movement of the window 16 between its closed position of Fig.1 and its restricted position of Fig.2 , the first and second restrictor members 22, 24 pivot relative to one another (and to their respective mounting part) between the closed condition of Fig.1 and the opened condition of Fig.2 .
  • the first restrictor member 22 is attached to the first mounting part 12 by way of a locking element 30, the locking element being releasable from the first mounting part 12 upon activation of a key-operated locking means 32.
  • a key-operated locking means 32 Specifically, insertion of the correct key 34 into the lock body 36, and rotation of the key through an angle of approximately 180°, allows the locking element 30 to be released from the recess 40 of the first mounting part 12 in which it is secured.
  • the restrictor 10 is not lockable in the closed condition, and as far as the restrictor 10 is concerned the window 16 may be moved between its closed and restricted positions of Figs. 1 and 2 as often as desired without access to the key 34.
  • the figures do not show all of the window and frame, however, and it will be understood that the window will also have a conventional operating handle which in a healthcare facility will itself typically be key-lockable. Accordingly, only an authorised person having access to the correct key for the operating handle can open the window 16; an unauthorised person will not be able to open the window in order to gain access to the lock body 36.
  • Fig.5 demonstrates another advantage of the restrictor members 22,24 overlying the lock body 36, namely that the restrictor 10 cannot be moved to its closed condition unless the key 34 is removed from the lock body 36.
  • Fig.5 shows the position in which the solid wall 44 of the first restrictor member 22 fouls the head of the key 34 (in other embodiments the first restrictor member can have an opening and the second restrictor member can have a wall which covers (and fouls) the key).
  • the key 34 prevents the restrictor 10 being moved to a position in which the window 16 can be closed, so that unless the key is removed the window 16 cannot be closed. Even if the window can be closed, however, it is readily apparent from Fig.5 that the key cannot inadvertently be left in the lock body 36.
  • Fig.6 shows the cover part 46 which is a part of the first mounting part 12 and serves to obscure the first fixing screws 48.
  • the cover part 46 clips into place over the fixing screws 48, as seen in Figs. 3-5 .
  • the cover part 46 In the closed condition of the restrictor 10 as see in Fig.1 , the cover part 46 is itself partially obscured and cannot be removed, so that access to the fixing screws 48 is not available unless the window 16 is opened and the cover part 46 is removed.
  • the first fixing screws 48 are located towards the "back" of the first mounting part 12. In the fitted condition the fixing screws 48 are therefore located away from the window opening of the frame 14. This permits the fixing screws 48 to avoid any formations which are located immediately adjacent the window opening (such as the rounding 50 shown in Fig. 9 ), which rounding is typical of many frame profiles. Moving the fixing screws 48 as far from the window opening as possible reduces the likelihood that the fixing screws 48 will secure the first mounting part 12 at anything other than a flat region of the frame 14.
  • Figs. 5 and 6 also show some of the second fixing screws 52 for the second mounting part 20. It will be seen from Fig.1 that the second fixing screws 52 are totally obscured and inaccessible when the restrictor 10 is in its closed condition. It will be understood from Fig. 3 that the second fixing screws 52 are also almost fully obscured and almost fully inaccessible when the window is in its restricted position. Full access to the fixing screws 52 is only available when the locking element 30 has been released from the first mounting part 12, and the window 16 is opened, as seen in Fig.4 .
  • FIG. 7 The sectional views of Figs. 7-9 show the operation of the locking means 30 of the restrictor 10.
  • Fig.7 the restrictor 10 is enabled and the window 16 (not seen) has been opened substantially to its restricted position.
  • the key 34 has been inserted into the lock body 36.
  • the key engages one or more locking plates or locking discs (not shown) within the lock body 36 and insertion of the correct key will permit the lock body 36 to rotate within its recess in the first mounting part 12.
  • the end of the lock body 36 carries an eccentric boss 54, and as the key 34 is rotated (through approximately 180°) from the inactive position of Fig.7 to the active position of Fig.8 the eccentric boss drives a lock member 56 to move to the right as drawn.
  • the lock member 56 engages catch 60 which is mounted to pivot between secured and released positions within the first mounting part 12.
  • the catch 60 in its secured position of Fig.7 engages the locking nose 62 of the locking element 30.
  • the catch 60 is biased by a compression spring 64 to rotate clockwise as drawn (towards its secured position), the spring 64 being compressed as the catch 60 is driven to pivot anti-clockwise by the body 56.
  • the key 34 can be rotated to an active position in which the eccentric boss 54 causes the catch 60 to move to its released position to release the locking nose 62, whereby the locking element 30 can be removed from the first mounting part 12, permitting full unrestricted opening of the window 16.
  • the key 34 cannot be removed from the lock body 36 when the lock body is in the active position of Fig.8 ; to remove the key 34 it is necessary to rotate the lock body 36 back to its inactive position of Figs. 7 and 9 .
  • the spring 64 extends and drives the catch 60 to pivot clockwise to the secured position of Fig.9 .
  • both of the catch 60 and the locking nose 62 have a tapered lead-in so that the restrictor 10 can be re-enabled without requiring the use of the key.
  • the locking nose 62 forces the catch 60 to pivot anti-clockwise as drawn to its released position, compressing the spring 64.
  • the spring 64 drives the catch 60 to rotate clockwise to secure the locking nose as shown in Fig.7 .
  • the key 34 is shown in Fig.9 , it will be understood that the key could be removed before the locking nose 62 is pressed into the recess 40.
  • FIG. 10 shows the operation of an alternative embodiment.
  • the embodiment of Fig.10 had a dead locking function.
  • the embodiment of Figs. 7-9 incorporates a spring 64 to move the catch 60 to its secured position.
  • the lock member 56 of that embodiment is therefore driven by the eccentric boss 54 in one direction only, namely from the secured position to the released position.
  • the lock member 156 is extended as compared to the earlier embodiment, and cooperates with the eccentric boss 54 to be positively driven in both directions.
  • the lock member 156 cooperates with the catch 60 to positively drive the catch to rotate both anti-clockwise and clockwise into its released and secured positions respectively.
  • the embodiment of Fig. 10 has no spring and the catch 60 is moved solely by rotation of the lock body 36 (by way of the eccentric boss 54 and the lock member 156).
  • the restrictor cannot be re-enabled without the key 34. Specifically, after the locking element 30 has been inserted into the recess 40 the key 34 is rotated to rotate the lock body 36 and the eccentric boss 54 (through approximately 180°), which moves the lock member 156 to the left as viewed and causes the catch 60 to pivot clockwise as drawn to its secured position (not shown, but similar to the secured position shown in Fig.7 ).
  • the eccentric boss 54 and the catch 60 are given the same reference numerals in Fig. 10 since they are identical to those components in the embodiment of Figs. 7-9 . It will be understood, however, that the form of the eccentric boss, and the form of the catch member, could differ between these two embodiments. In particular, there is no requirement for the catch 60 to have a tapered lead-in.
  • the structure and operation of the embodiment of Fig. 10 is otherwise similar to that of the embodiments of Figs. 7-9 and only the relevant differences have been discussed.
  • the window restrictor 10 is a relatively large component and is clearly visible upon the window. Whilst many restrictors made for the windows of domestic dwellings are substantially unobstrusive (and largely invisible), the highly-visible nature of the restrictor 10 is believed to be an advantage in healthcare facilities as it is expected to dissuade persons from seeking to disable or remove the restrictor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wing Frames And Configurations (AREA)

Claims (14)

  1. Un restricteur de fenêtre (10) pour une fenêtre ouvrante (16), le restricteur de fenêtre ayant :
    une première partie de montage (12) conçue pour être montée sur un élément parmi la fenêtre et le cadre qui l'entoure (14) ;
    une deuxième partie de montage (20) conçue pour être montée sur l'autre élément parmi la fenêtre et le cadre qui l'entoure ;
    un premier organe de restricteur (22) raccordé de manière à pouvoir pivoter à la première partie de montage (12) ;
    un deuxième organe de restricteur (24) raccordé de manière à pouvoir pivoter à la deuxième partie de montage (20), les premier et deuxième organes de restricteur étant raccordés de manière à pouvoir pivoter l'un à l'autre, les premier et deuxième organes de restricteur étant mobiles entre une condition fermée et une condition ouverte, les première et deuxième parties de montage étant plus proches l'une de l'autre dans la condition fermée que dans la condition ouverte ;
    le premier organe de restricteur (22) étant raccordé à la première partie de montage (12) par le biais d'un élément de verrouillage (30) qui peut être libéré de la première partie de montage ;
    le restricteur de fenêtre (10) ayant un moyen de verrouillage actionné par clé (32) pour libérer l'élément de verrouillage (30) de la première partie de montage ;
    où le moyen de verrouillage actionné par clé (32) a un corps de verrou (36) avec un trou de serrure, caractérisé par le fait que le trou de serrure est inaccessible lorsque les premier et deuxième organes de restricteur (22, 24) sont dans la condition fermée.
  2. Un restricteur de fenêtre selon la revendication 1 dans lequel le trou de serrure est caché lorsque les premier et deuxième organes de restricteur (22, 24) sont dans la condition fermée.
  3. Un restricteur de fenêtre selon la revendication 2 dans lequel le trou de serrure est caché par les premier et/ou deuxième organes de restricteur (22, 24) lorsqu'ils sont dans leur condition fermée.
  4. Un restricteur de fenêtre selon l'une quelconque des revendications 1 à 3 dans lequel les premier et deuxième organes de restricteur (22, 24) ne peuvent pas être déplacés vers la condition fermée quand une clé (34) est située dans le corps de verrou (36).
  5. Un restricteur de fenêtre selon l'une quelconque des revendications 1 à 4 dans lequel le corps de verrou (36) est rotatif entre des positions active et inactive par le biais d'une clé, et dans lequel la clé n'est pas amovible du corps de verrou dans sa position active.
  6. Un restricteur de fenêtre selon l'une quelconque des revendications 1 à 5 dans lequel les premier et deuxième organes de restricteur (22, 24) sont inextensibles.
  7. Un restricteur de fenêtre selon l'une quelconque des revendications 1 à 6 dans lequel le moyen de verrouillage actionné par clé (32) est monté sur la première partie de montage (12).
  8. Un restricteur de fenêtre selon l'une quelconque des revendications 1 à 7 dans lequel la première partie de montage (12) est assujettie à la fenêtre (16) ou au cadre (14) par des premiers dispositifs de fixation (48), et la deuxième partie de montage (20) est assujettie à l'autre élément parmi la fenêtre (16) et le cadre (14) par des deuxièmes dispositifs de fixation (52), les premiers dispositifs de fixation et/ou les deuxièmes dispositifs de fixation étant inaccessibles lorsque les premier et deuxième organes de restricteur (22, 24) sont dans la condition fermée.
  9. Un restricteur de fenêtre selon la revendication 8 dans lequel les premiers (48) et/ou deuxièmes dispositifs de fixation (52) ne sont pas visibles lorsque les premier et deuxième organes de restricteur (22, 24) sont dans la condition fermée.
  10. Un restricteur de fenêtre selon la revendication 8 ou la revendication 9 dans lequel les premiers (48) et/ou deuxièmes dispositifs de fixation (52) sont inaccessibles lorsque les premier et deuxième organes de restricteur (22, 24) sont dans la condition ouverte.
  11. Un restricteur de fenêtre selon l'une quelconque des revendications 1 à 10 dans lequel l'élément de verrouillage (30) a un nez de verrouillage (62) et la première partie de montage (12) a un cliquet mobile (60) qui coopère avec le nez de verrouillage pour assujettir l'élément de verrouillage à la première partie de montage.
  12. Un restricteur de fenêtre selon la revendication 11 dans lequel le cliquet mobile (60) est sollicité par un organe élastique (64) vers une position assujettie, et dans lequel le nez de verrouillage (62) et/ou le cliquet (60) est effilé pour permettre un assujettissement du nez de verrouillage et du cliquet sans utiliser de clé.
  13. Un restricteur de fenêtre selon la revendication 11 dans lequel le corps de verrou (36) est raccordé au cliquet mobile (60) par le biais d'un organe de verrou (156), le cliquet mobile étant entraîné positivement à se déplacer entre une position assujettie et une position libérée par rotation du corps de verrou (36).
  14. Un restricteur de fenêtre selon l'une quelconque des revendications 1 à 13 dans lequel le premier organe de restricteur (22) est raccordé de façon à pouvoir pivoter à l'élément de verrouillage (30).
EP16170770.8A 2015-05-22 2016-05-23 Réducteur de fenêtre Active EP3095936B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1508816.4A GB201508816D0 (en) 2015-05-22 2015-05-22 Window restrictor

Publications (2)

Publication Number Publication Date
EP3095936A1 EP3095936A1 (fr) 2016-11-23
EP3095936B1 true EP3095936B1 (fr) 2018-06-27

Family

ID=53506193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16170770.8A Active EP3095936B1 (fr) 2015-05-22 2016-05-23 Réducteur de fenêtre

Country Status (2)

Country Link
EP (1) EP3095936B1 (fr)
GB (1) GB201508816D0 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ233276A (en) * 1990-04-10 1993-10-26 Interlock Ind Ltd Latching window stay
GB9202595D0 (en) 1992-02-07 1992-03-25 Banks J & Co Ltd Releasable safety catch
GB0214438D0 (en) 2002-06-21 2002-07-31 Banks J & Co Ltd Lockable releasable safety catch
FR2912176B1 (fr) * 2007-02-06 2011-11-18 Paul Grison Systeme autonome et securise d'un entrebailleur de porte desolidarisable de l'exterieur, par clef, par combinaison codee ou par moyen electronique
GB201220866D0 (en) * 2012-11-20 2013-01-02 Banks J & Co Ltd Cable restictor

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
GB201508816D0 (en) 2015-07-01
EP3095936A1 (fr) 2016-11-23

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