WO2003062574A1 - Enrouleur a chaine, verrouillable - Google Patents

Enrouleur a chaine, verrouillable Download PDF

Info

Publication number
WO2003062574A1
WO2003062574A1 PCT/AU2003/000055 AU0300055W WO03062574A1 WO 2003062574 A1 WO2003062574 A1 WO 2003062574A1 AU 0300055 W AU0300055 W AU 0300055W WO 03062574 A1 WO03062574 A1 WO 03062574A1
Authority
WO
WIPO (PCT)
Prior art keywords
chain
winder
locking
drive
chain winder
Prior art date
Application number
PCT/AU2003/000055
Other languages
English (en)
Inventor
John Constantinou
Original Assignee
Lockwood Security Products Pty Limited
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 Lockwood Security Products Pty Limited filed Critical Lockwood Security Products Pty Limited
Priority to NZ533260A priority Critical patent/NZ533260A/en
Priority to GB0412613A priority patent/GB2398351B/en
Publication of WO2003062574A1 publication Critical patent/WO2003062574A1/fr

Links

Classifications

    • 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
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
    • E05F11/04—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables
    • E05F11/06—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables in guide-channels

Definitions

  • This invention is directed to a lockable chain winder that is used to open and close windows.
  • Chain winders that are used to open and close windows are very well known.
  • the winders are typically fastened to the lower sill of the window surround frame.
  • the winders have a metal or plastic body that is generally elongate and which has an external winder handle. Inside the body is a linked chain. Rotation of the external handle causes the linked chain to move out of or into the body depending on the direction of rotation of the handle.
  • the end of the linked chain is attached to the window.
  • the window is typically hinged from the top of the window surround frame. Therefore, the chain winder can push open or pull closed the window.
  • Lockable chain winders are also known.
  • the outer body is provided with a key barrel and a key can be inserted to lock the chain against movement.
  • the key barrel is indirectly associated with the chain via a lock plate, a locking wire or similar type of locking device.
  • a lock plate a locking wire or similar type of locking device.
  • a known type of lockable chain winder manufactured by us uses a locking member that locks against the sprocket (the sprocket driving the linked chain in and out of the lock body).
  • Another type of locking chain winder uses a locking plate that engages with the linked chain to lock the linked chain against movement.
  • a lockable chain winder typically has a key barrel and a push button.
  • the key barrel and the push button need to operate the locking member, and because the locking member must engage the linked chain, sprocket, or other component in the lock, it is practical to have the key barrel, the push button and the winding handle proximal to each other.
  • winding of the handle can cause the key to be struck either by the handle or by the person's hand. This can cause damage to the chain winder, the key, or can cut or bruise the person's hand.
  • chain winder could be designed to minimise the possibility of the handle/person's hand striking a key that may be left in the key barrel.
  • Another disadvantage with chain winders is in the assembly complexity. Because the winders have numerous components, assembly is complex and the possibility of automated assembly is reduced. Therefore, it would be an advantage if the number of components could be reduced and/or assembly could be improved particularly to favour automated assembly. For instance, it would be an advantage if components could be assembled without requiring fixing of retainer clips or other fiddly components that do not find success with automated assembly.
  • the invention resides in a lockable chain winder comprising an outer body , a chain at least partially in the body, drive means to drive the chain, a winding handle which is operated to extend or retract the chain from the body, a key barrel for locking the chain winder, and a rotatable drive component , which has a thread which engages with the drive means, attachment means on the drive component to attach to the winding handle, and locking means on the drive component to form part of a chain locking mechanism.
  • the drive means may comprise a sprocket.
  • the rotatable drive component may comprise a unitary component.
  • the attachment means may comprise a spindle.
  • the locking means may comprise a ratchet.
  • the invention resides in a lockable chain winder that comprises an outer body, a winding handle extending from the outer body and which is rotated to extend or retract the chain, a key barrel for locking the chain winder, and a push button, the construction and arrangement being that the push button is closest to the winding handle, and the key barrel is adjacent the push button but is furthest from the winding handle.
  • the invention resides in a component for a lockable chain winder, the component comprising a unitary component, the component comprising a main body portion which is provided with a thread and which is adapted to drive a sprocket, a spindle extending from one end of the main body portion and which is adapted to be attached to a winding handle, and a ratchet which is adjacent the other end of the main body portion and which is adapted to form part of a chain locking mechanism.
  • the handle may be provided with the spindle and the unitary component is provided with spindle engaging means.
  • the novel unitary component contributes substantially to the working of the chain winder by providing three functions on the same components being providing the thread to drive the sprocket, providing the spindle to mate with the winding handle, and providing the ratchet to form part of the locking mechanism.
  • the number of component parts can be reduced, assembly can be streamlined, and the component promotes the ability to automate assembly of the chain winder.
  • the invention resides in a method for assembly of a chain winder using top loading to reduce assembly time, the method comprising: I. Providing a casing which has an open bottom,
  • the unitary component comprising a main body portion which is provided with a thread and which is adapted to drive a sprocket, a spindle extending from one end of the main body portion and which is adapted to be attached to a winding handle, and a ratchet which is adjacent the other end of the main body portion and which is adapted to form part of a chain locking mechanism, V. Inserting a locking plate into the casing,
  • Figure 1 Illustrates a chain winder.
  • Figure 2 Illustrates a side section view of the chain winder of figure 1 Figure 3. Illustrates a top section view of the chain winder in the unlocked position
  • Figure 4 Illustrates a top section view of the chain winder in the locked position.
  • Figure 5 Illustrates a bottom view of the chain winder with the base plate removed to show the internal components
  • Figure 6 Illustrates an exploded view of the chain winder.
  • Figure 7 Illustrates a close-up view from one side of the drive components and the locking components of the chain winder.
  • Figure 8 Illustrates a close-up view from the other side of the drive components and the locking components.
  • FIG. 9-11 Illustrates a unitary component in the form of a worm.
  • FIG. 12-16 Illustrates the stepwise assembly of the chain winder
  • the chain winder according to an embodiment of the present invention comprises the following components:
  • a casing typically formed of metal, plastic or other suitable material, 11.
  • a handle assembly is provided,
  • a lock plate 15. An insert to house the chain guide and to lock the worm into a fixed position and which locates or restricts movement of the locking plate so that it does not disengage from the ratchet, and which is formed of plastic,
  • a chain guide spring 18. A chain.
  • casing 10 has a design that is relatively standard and typically comprises an elongate substantially rectangular lower body portion 22 and a raised upper body portion 23.
  • the casing typically has a length of between 10-40 cm, a width of between 20-100 mm and a height of between 20-50 mm. These sizes can of course vary to suit.
  • the handle assembly 11 extends from the casing and particularly from the raised upper body portion 23 of the casing.
  • the upper body portion 23 is provided with an aperture 24 (see figure 6) to accommodate the handle.
  • the handle assembly is of known design and as illustrated in figure 6 comprises three main components being a curved arm portion 25, and a cylindrical knob 26 which is rotatably attached to arm portion 25 via a pin 27.
  • the curved arm portion 25 accommodates a retainer clip 28 which attaches onto spindle 29 of worm 13.
  • adjacent handle assembly 11 is a spring mounted depressible push button 30 and a key barrel 31.
  • Push button 30 passes through an aperture in upper body portion 23, and key barrel 31 passes through an adjacent aperture in upper body portion 23.
  • push button 31 is adjacent handle assembly 11 , while key barrel 31 is positioned away from handle assembly 11.
  • this arrangement and positioning of the handle relative to the key barrel contributes substantially to this part of the invention.
  • the push button may be present or absent.
  • the push button and the key barrel comprise part of a single subassembly 12.
  • the subassembly 12 can be a plastic or metal component formed with two openings 32, 33.
  • the subassembly is screwed into the top casing 10 via a fixing screw 34 (but not until assembly of all the components is completed).
  • a push button 35 and a barrel 36 can then be inserted into the respective openings 32, 33.
  • the push button and the barrel can be assembled before or after assembly of the sub housing 12. This enables streamlining of the assembly line.
  • the chain winder contains worm 13 as a component of the chain winder.
  • Worm 13 is best illustrated in figures 9-11.
  • the worm is constructed as a single part which may be die casting, investment casting or by any other suitable and cost effective method and achieves three separate functions.
  • Worm 13 comprises a main body portion 37 that is generally cylindrical in configuration and which is provided with an external thread or helix 38. The thread engages with sprocket 16 (see figure 6) which will be described in greater detail below.
  • Adjacent one end of main body portion 37 is a spindle 29.
  • Spindle 29 is polygonal (such as square or hexagonal) in cross-section and is provided with a dimple 40 on each polygonal face.
  • the dimple engages with retainer clip 28 to press fit the winding handle onto the spindle.
  • a ratchet 41 At the other end of main body portion 37 is a ratchet 41. Extending from ratchet 41 is a short shaft 61.
  • the worm can be manufactured without requiring any machining or any secondary operations.
  • Lock plate 14 is best illustrated in figures 6-8 and comprises a metal plate having a particular configuration. The function of lock plate 14 is to prevent the chain 18 from moving when the chain winder is locked using the push button. Lock plate 14 is slideable and can reciprocate between an extended locking position and a retracted free position. Lock plate 14 is guided for sliding movement in the casing. Best illustrated in figure 7 and 8, lock plate 14 has a forward portion 42 that is provided with teeth (the teeth being best illustrated in figures 6). When lock plate 14 is in the extended locking position, these teeth engage with ratchet 41 to prevent worm 13 from turning. Conversely, when lock plate 14 is in the retracted position, the teeth are freed from each other and the worm can rotate by rotation of the external handle assembly 11.
  • Lock plate 14 has a cutout portion 45 (see figure 7-8) in which the crank pin
  • lock plate 14 is spring mounted by spring 60 such that the lock plate is naturally biased into the forward locking position. Depression of button 35 will release the lock plate to shoot forwardly into its locked position. Once in the locked position, the lock plate is retracted using a key. Because the lock plate is spring biased, it is still possible to close the window even if the lock plate is in the engaged position, this being due to the angle of the ratchet teeth which allows the worm to rotate in a closed direction (the teeth riding over each other and temporarily pushing back the lock plate) but prevent the worm from rotating in the open direction.
  • Worm 13 is attached to sprocket 16 such that rotation of the worm causes rotation of the sprocket.
  • the sprocket 16 is provided with a pinion gear 47 which engages with the thread on worm 13.
  • the chain winder contains an insert 15 as part of the assembly.
  • the insert is typically formed of plastic.
  • Insert 15 provides a number of functions. Firstly, insert 15 has a configuration to allow a metal chain guide to be housed inside insert 15. The insert additionally locks worm 13 in a fixed position and provides the worm with a smooth plastic bearing surface. Therefore, there is no need to have a retainer clip of any sort to hold the worm in place.
  • FIGS 12-16 there is illustrated a stepwise assembly method for the chain winder.
  • the assembly is a top loading assembly whereby casing 10 is inverted and the components are inserted into the casing from the uppermost component first to the lowermost component last. Specifically, and initially referring to figure 12, casing 10 has been inverted to show a substantially hollow and open interior.
  • the push button and barrel subassembly 12 is placed into the upper body portion 23 of casing
  • the push button and barrel subassembly can be assembled before or after the subassembly is placed into the casing.
  • assembly is meant that the key barrel 36, and the push button 35 are assembled to the subassembly.
  • Worm 13 is also placed into the upper body portion 23 with spindle 29 passing through opening 24.
  • the short shaft 61 is positioned in a cradle 15 to allow the worm to rotate.
  • lock plate 14 is inserted into the casing, this being illustrated in figure 13.
  • the lock plate is directly engaged to ratchet 41 (ratchet 41 being formed as an integral part of worm 13).
  • Insert 15 has a configuration which allows a metal chain guide 51 to be housed by the insert.
  • the metal chain guide 51 is then placed into plastic insert 15, and the chain guide spring 17 is added.
  • the chain 18 sprocket 16 idler gear 19 and the screw 34 is then attached. Finally, the back plate 20 is screwed onto casing 10 to form the assembled chain winder.
  • the casing which can be made of metal, plastic or any other suitable material
  • the casing can be metal plated and can be given a goldplating and this has been achieved by maintaining a uniform thickness, the uniform thickness being possible because of the configuration of the components of the chain winder, and especially the design of insert 15 and the new separate barrel housing.
  • plastic insert 15 now allows various ribs on casing 10 to be eliminated which enables the casing to be gold plateable.

Landscapes

  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Emergency Lowering Means (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

La présente invention concerne un enrouleur à chaîne, verrouillable, comprenant un corps extérieur (10), une chaîne (18) au moins en partie située dans le corps, un moyen d'entraînement (16) destiné à entraîner la chaîne, une poignée d'enroulement (11) qui est actionnée pour étendre ou rétracter la chaîne par rapport au corps, un barillet à clé (36) permettant de verrouiller l'enrouleur à chaîne, et un élément d'entraînement rotatif (13), lequel présente un filet qui vient en prise avec le moyen d'entraînement, un moyen de fixation (29), situé au niveau de l'élément d'entraînement, destiné à être fixé à la poignée d'enroulement et un moyen de verrouillage (41), situé au niveau de l'élément d'entraînement, destiné à faire partie d'un mécanisme de verrouillage à chaîne.
PCT/AU2003/000055 2002-01-25 2003-01-21 Enrouleur a chaine, verrouillable WO2003062574A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NZ533260A NZ533260A (en) 2002-01-25 2003-01-21 A lockable chain winder
GB0412613A GB2398351B (en) 2002-01-25 2003-01-21 A lockable chain winder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPS0172A AUPS017202A0 (en) 2002-01-25 2002-01-25 A lockable chain winder
AUPS0172 2002-01-25

Publications (1)

Publication Number Publication Date
WO2003062574A1 true WO2003062574A1 (fr) 2003-07-31

Family

ID=3833777

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2003/000055 WO2003062574A1 (fr) 2002-01-25 2003-01-21 Enrouleur a chaine, verrouillable

Country Status (5)

Country Link
AU (1) AUPS017202A0 (fr)
GB (1) GB2398351B (fr)
MY (1) MY133760A (fr)
NZ (1) NZ533260A (fr)
WO (1) WO2003062574A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006100212B4 (en) * 2006-03-21 2006-04-27 Pacific Enterprises (Aust) Pty Ltd Window winder
WO2011072343A1 (fr) * 2009-12-18 2011-06-23 Pacific Holdings (Aust) Pty Ltd Enrouleur de chaîne

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010418A1 (fr) * 1992-10-29 1994-05-11 W. Hautau Gmbh Commande par chaine comportant un moteur de commande dispose a l'interieur
WO1995020091A1 (fr) * 1994-01-21 1995-07-27 Interlock Industries Limited Dispositif de commande pour fenetre
WO1997032101A1 (fr) * 1996-02-28 1997-09-04 Lockwood Australia Pty. Ltd. Enrouleur a chaine verrouillable
AU3780400A (en) * 2000-05-30 2001-12-06 Pacific Enterprises (Aust) Pty Ltd Lockable window opener

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3709893A (en) * 1992-05-01 1993-11-04 Gainsborough Hardware Industries Limited Chain winder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010418A1 (fr) * 1992-10-29 1994-05-11 W. Hautau Gmbh Commande par chaine comportant un moteur de commande dispose a l'interieur
WO1995020091A1 (fr) * 1994-01-21 1995-07-27 Interlock Industries Limited Dispositif de commande pour fenetre
WO1997032101A1 (fr) * 1996-02-28 1997-09-04 Lockwood Australia Pty. Ltd. Enrouleur a chaine verrouillable
AU3780400A (en) * 2000-05-30 2001-12-06 Pacific Enterprises (Aust) Pty Ltd Lockable window opener

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006100212B4 (en) * 2006-03-21 2006-04-27 Pacific Enterprises (Aust) Pty Ltd Window winder
WO2011072343A1 (fr) * 2009-12-18 2011-06-23 Pacific Holdings (Aust) Pty Ltd Enrouleur de chaîne
AU2010333719B2 (en) * 2009-12-18 2017-06-29 Pacific Holdings (Aust) Pty Ltd Chainwinder

Also Published As

Publication number Publication date
GB2398351A (en) 2004-08-18
GB2398351B (en) 2005-03-23
AUPS017202A0 (en) 2002-02-14
NZ533260A (en) 2007-06-29
GB0412613D0 (en) 2004-07-07
MY133760A (en) 2007-11-30

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