WO2008110753A1 - Mécanisme de verrouillage - Google Patents

Mécanisme de verrouillage Download PDF

Info

Publication number
WO2008110753A1
WO2008110753A1 PCT/GB2008/000756 GB2008000756W WO2008110753A1 WO 2008110753 A1 WO2008110753 A1 WO 2008110753A1 GB 2008000756 W GB2008000756 W GB 2008000756W WO 2008110753 A1 WO2008110753 A1 WO 2008110753A1
Authority
WO
WIPO (PCT)
Prior art keywords
keeper
latch member
locking mechanism
door
resilient
Prior art date
Application number
PCT/GB2008/000756
Other languages
English (en)
Other versions
WO2008110753A8 (fr
WO2008110753A9 (fr
Inventor
Alasdair Campbell
Original Assignee
Well Wizards 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 Well Wizards Limited filed Critical Well Wizards Limited
Publication of WO2008110753A1 publication Critical patent/WO2008110753A1/fr
Publication of WO2008110753A9 publication Critical patent/WO2008110753A9/fr
Publication of WO2008110753A8 publication Critical patent/WO2008110753A8/fr
Priority to GB0913797A priority Critical patent/GB2458622A/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/02—Striking-plates; Keepers; Bolt staples; Escutcheons
    • E05B15/0205—Striking-plates, keepers, staples
    • E05B15/022—Striking-plates, keepers, staples movable, resilient or yieldable
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/10—Bolts of locks or night latches
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/10—Locks or fastenings for special use for panic or emergency doors
    • E05B65/102—Locks or fastenings for special use for panic or emergency doors opening under pressure on the surface of the door itself

Definitions

  • This invention relates to a locking mechanism.
  • the invention particularly relates to a locking mechanism having a resilient member allowing opening of the locked mechanism when forces applied to it exceed a threshold.
  • a locking mechanism comprising a latch member and a keeper, wherein the latch member and the keeper are movable relative to one another between a first locked configuration, in which the latch member engages the keeper and is adapted to restrict opening of the locking mechanism, and a second open configuration, in which the latch member does not engage the keeper, and opening of the locking mechanism is permitted, wherein one of the latch member and the keeper is inherently resilient and is adapted to deform in response to forces above a threshold when the latch member engages the keeper in the first locked configuration, whereby said deformation permits the latch member to disengage from the keeper and allows the locking mechanism to open while the latch member is in the first locked configuration.
  • the resilient member is formed entirely from resilient material that is inherently and optionally uniformly resilient.
  • the latch member or the keeper can be made entirely from a single piece of resilient plastics material, or other resilient material such as spring steel.
  • the latch member is typically substantially rigid, and the keeper is typically resilient.
  • the keeper is typically a one-piece member that incorporates or consists of a resilient material.
  • the keeper can be stepped, so as to have a first portion adapted for attachment to a door or a door surround, and a second portion that is fixed in a different plane to the first portion, typically a parallel plane that is spaced away from the plane of the first portion, wherein the second portion is adapted to engage the latching member.
  • first and second portions are spaced from one another by a distance sufficient to accommodate the latch.
  • a typical keeper can be a generally U-shaped member, with two generally straight limbs and a generally arcuate connector between the limbs.
  • One of the limbs can be coupled to a door or a door surround, thereby connecting the free end of the other limb to the door or the door surround in a cantilever manner.
  • the two limbs can extend in the same direction from the connector and can be generally parallel to one another. The spacing between the limbs is generally sufficient to accommodate the latch member.
  • the limbs can extend from the connector in different directions from one other, so that the keeper assumes a "lazy-S" shape.
  • the spacing between the planes is generally sufficient to accommodate the latch member.
  • the keeper is formed of resilient plastics or metal. After removal of the force causing the deformation, the keeper is typically adapted to return to its original configuration that it adopted before deformation.
  • the keeper (or the latch member, if it is resilient) is typically adapted to deform elastically, and to avoid plastic deformation by the opening of the locking mechanism, so that it returns to its original condition when the force is removed.
  • the keeper or the latch member can be coated with a protective or decorative material. Metal keepers or latch members can typically be electroplated.
  • Coatings are advantageously low friction coatings, with friction coefficients that are lower than the material of the keeper or the latch member.
  • Plastics material can be a useful coating, and keepers or latch members that have been moulded or dipped in plastics materials are advantageous. Coating keepers or latch members can reduce the friction between the bolt and the locking mechanism.
  • the present invention also provides a resilient component for a locking mechanism to retain a lock in a locked configuration, wherein the resilient component is adapted to deflect under load to permit movement of the lock from the locked to the unlocked configuration.
  • the resilient component can be a door lock retainer that is flexible and forms part of a door lock assembly, and is typically formed as a retaining plate such as a keeper, or in some alternative embodiments, the resilient component may form a latch member.
  • the resilient component can typically deflect under a predetermined load to allow the door to open when an excessive force is applied to open a locked door.
  • Figure 1 shows a locking mechanism in a locked position attached to a door and a door surround
  • Figure 2 shows an isometric view of the Figure 1 locking mechanism in the locked position
  • Fig 3 shows a perspective view of a second embodiment of a keeper plate
  • Fig 4 shows a plan view of the Fig 3 keeper plate
  • Fig 5 shows a side sectional view through the line A-A of Fig 4;
  • Figure 6 shows a side view of the fig 1 locking mechanism in the locked position
  • Figure 7 shows a side view of the fig 1 locking mechanism deflecting from the locked position to allow the locking mechanism to open when a load is applied to it;
  • Figure 8 shows a further embodiment of a locking mechanism in the locked position attached to a door and a door surround
  • Figure 9 shows an isometric view of the further embodiment of a locking mechanism in the locked position.
  • a locking mechanism 1 comprises a keeper plate 5 having first and second limbs 5a and 5b, and a connector portion 5c that connects the two limbs 5a, 5b.
  • the two limbs 5a and 5b are parallel to one another and are spaced apart by the connector portion 5c, which extends diagonally between the two limbs 5a, 5b, to create a step in the plate 5.
  • the first limb 5a has two apertures to accept fixings such as screws or bolts 6, in order to fix the limb 5a to the inside surface of a door surround 7, adjacent to the door opening 6o.
  • the surface of the door surround 7 is typically flat, and the step in the plate 5 caused by the diagonal extension of the connector portion 5c spaces the second limb 5b away from the surface of the door surround 7.
  • the second limb 5b is parallel to the door surround 7.
  • the free end of the second limb 5b is therefore connected to the door surround 7 in a cantilever manner by means of the connector 5c, the first limb 5a and the fixings 6.
  • a door 8 occludes the door opening 6o.
  • the door has a sliding latch member 9 of conventional design, which is mounted in a bracket to permit it to slide in and out of engagement with the keeper plate 5 in order to lock the door 8.
  • the latch member 9 slides between the outer surface of the door surround 7 and the inner surface of the second limb 5b of the keeper plate 5.
  • the second limb 5b of the keeper plate 5 thereby retains the latch member 9 in its locked configuration shown in Figures 1 and 2, and provides a resistance to opening when the door is pushed.
  • the keeper plate 5 is made from spring steel and is formed into the lazy-S configuration as shown in Figure 2 during manufacture, so that the whole of the keeper plate 5 is inherently resilient and flexible.
  • the flexibility of the first limb is restricted in use by its connection to the inner surface of the door surround 7, but the connector portion 5c and the second limb 5b are adapted to deform when under sufficient force, and to spring back to their original configurations as shown in Fig 2, when the force is removed.
  • the keeper plate 5' can be formed from a flat plate similar to the one shown in Fig 2, but without the step.
  • a first portion 5'a at one end of the modified embodiment of the keeper plate 5' is attached to the door jamb by bolts or screws passing through apertures 6' in the same way as the first limb 5a of the Fig 2 embodiment, and the opposite end 5'b of the keeper plate 5' is supported in a cantilever manner, again similar to the free second limb 5b of the Fig 2 keeper plate.
  • the modified embodiment 5' is useful in door designs where the bolt locking the door engages in a recess on the door post and the keeper plate 5' can remain flush with the door post unless it is deflecting.
  • the degree of flexibility and resilience of the keeper plate 5 can be selected by methods of manufacture, materials or construction to provide more or less resistance to opening, so that when the door 8 is pushed open in the locked position with the latch member 9 retained between the keeper plate 5 and the door surround 7, the latch member 9 will bear against the keeper plate 5, which may deform a small amount under low forces, but will retain the lock in the locked configuration shown in Figure 2.
  • the flexible keeper plate 5 is typically manufactured from a flexible material, such as spring steel, which can deflect under load and then return to its original shape and form due to its capability to temporarily deflect under load.
  • the flexible retaining plate can be manufactured from other flexible materials such as rubber, plastics or composites that have the capability of deforming under load and then returning to their original shape and form.
  • a further embodiment of a locking mechanism 11 comprises a keeper plate 15 having first and second limbs 15a and 15b, and a connector portion 15c that connects the two limbs 15a, 15b.
  • the keeper plate 15 is a generally U-shaped member with the two limbs 15a and 15b parallel to one another and being spaced apart by the arcuate connector portion 5c, to create a step in the plate 5.
  • the first limb 15a has two apertures to accept fixings such as screws or bolts 16, in order to fix the limb 15a to the inside surface of a door surround 17, adjacent to the door opening 16o, in a similar manner to the first embodiment 1.
  • the surface of the door surround 17 is typically flat, and the step in the plate 5 caused by the arcuate connector portion 15c spaces the second limb 15b away from the surface of the door surround 17.
  • the second limb 15b is parallel to the door surround 17 and to the first limb 15a.
  • the free end of the second limb 15b is therefore connected to the door surround 17 in a cantilever manner by means of the connector 15c, the first limb 15a and the fixings 16.
  • the door 18 and the sliding latch member 19 are the same as the previous embodiment.
  • the sliding latch member 19 moves in and out of engagement with the keeper plate 15 in order to lock the door 18.
  • the latch member 19 slides between the first and second limbs of the keeper plate 15.
  • the second limb 5b of the keeper plate 5 thereby retains the latch member 9 in its locked configuration shown in Figures 8 and 9, and provides a resistance to opening when the door is pushed.
  • the keeper plate 15 is again made from spring steel and is formed into U- shaped configuration as shown in Figures 8 and 9 during manufacture, so that the whole of the keeper plate 15 is inherently flexible.
  • the flexibility of the first limb is restricted in use by its connection to the inner surface of the door surround 17, but the connector portion 15c and the second limb 15b are adapted to deform when under sufficient force, and to spring back to their original configurations as shown in Fig 8, when the force is removed.
  • the degree of flexibility and resilience of the keeper plate 15 can be selected by methods of manufacture, materials or construction to provide more or less resistance to opening, so that when the door 18 is pushed open in the locked position with the latch member 19 retained between two limbs of the keeper plate 15, the latch member 9 will bear against the second limb 5a of the keeper plate 5, which may deform a small amount under low forces, but will retain the lock in the locked configuration shown in Figure 8.
  • the keeper plate is quite stiff, with a high spring modulus, and is therefore able to resist fairly high forces, and only bends to release the latch 19 when the door 18 is kicked or pushed with a similar amount of force.
  • the degree of overlap between the keeper plate 15 and the latch member 9 can be adjusted to select a particular deflection behaviour or opening force, without modifying the structural characteristics of the locking mechanism.
  • the latch 9 typically engages the free end of the keeper plate and the overlap between them is kept small, large enough to prevent accidental disengagement between the two in the event of small forces, but small enough so that upon the application of large forces sufficient to disengage the latch and keeper, the keeper plate 15 only has to deform though a small arc to allow the latch 9 to disengage. The smaller the overlap, the lower the force needed to disengage the keeper and latch and open the door.
  • the flexible keeper plate 15 is typically manufactured from a flexible material, such as spring steel, which can deflect under load and then return to its original shape and form due to its capability to temporarily deflect under load.
  • the flexible retaining plate can be manufactured from other flexible materials such as rubber, plastics or composites that have the capability of deforming under load and then returning to their original shape and form.
  • the keeper plate 15 After the keeper plate 15 has deformed releasing the latch member 19, the keeper plate 15 then springs back to its original configuration shown in Fig 8, but with the latch member 19 disengaged thereby allowing free opening of the door 8. Since the keeper plate 15 is resilient and returns to its pre-forced configuration, the original spacing between the first and second limbs is resumed, and the door can be locked again as normal.
  • the latch member can be resilient instead of or in addition to the keeper plate, which can either be resilient or rigid in such embodiments, allowing the latch member 9, 19 to deform under excessive forces, instead of (or as well as) the keeper plate 5, 15.
  • the keeper need not be stepped, and can be a flat plate mounted on a boss, or over a recess on the door surround.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Lock And Its Accessories (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

L'invention concerne un mécanisme de verrouillage ayant un élément élastique permettant l'ouverture du mécanisme verrouillé lorsque des forces appliquées sur celui-ci dépassent un certain seuil. Le mécanisme comprend un élément de loquet et une gâche, mobiles l'un par rapport à l'autre entre une première configuration verrouillée, dans laquelle l'élément de loquet est en prise avec la gâche et est adapté pour empêcher l'ouverture du mécanisme de verrouillage, et une seconde configuration ouverte, dans laquelle l'élément de loquet n'est pas en prise avec la gâche et l'ouverture du mécanisme de verrouillage est autorisée, l'un de l'élément de loquet et de la gâche étant par nature élastique et étant adapté pour se déformer en réponse à des forces supérieures à un seuil lorsque l'élément de loquet est en prise avec la gâche dans la première configuration verrouillée, de sorte que ladite déformation permet à l'élément de loquet de se dégager de la gâche et permet au mécanisme de verrouillage de s'ouvrir alors que l'élément de loquet est dans la première configuration verrouillée. Ceci permet au mécanisme de verrouillage d'être ouvert de façon répétée, dans la condition verrouillé, sans causer un endommagement de la serrure, ou d'une quelconque porte ou encadrement de porte auquel elle est adaptée.
PCT/GB2008/000756 2007-03-14 2008-03-06 Mécanisme de verrouillage WO2008110753A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0913797A GB2458622A (en) 2007-03-14 2009-08-07 Locking mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0704870.5 2007-03-14
GBGB0704870.5A GB0704870D0 (en) 2007-03-14 2007-03-14 Locking mechanism

Publications (3)

Publication Number Publication Date
WO2008110753A1 true WO2008110753A1 (fr) 2008-09-18
WO2008110753A9 WO2008110753A9 (fr) 2008-11-20
WO2008110753A8 WO2008110753A8 (fr) 2009-02-19

Family

ID=37988933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/000756 WO2008110753A1 (fr) 2007-03-14 2008-03-06 Mécanisme de verrouillage

Country Status (2)

Country Link
GB (2) GB0704870D0 (fr)
WO (1) WO2008110753A1 (fr)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202414A (en) * 1922-05-19 1923-08-20 Margaret Anne Mercer Improvements in window sash fasteners and the like
US1795502A (en) * 1928-11-01 1931-03-10 Frank A Porell Latch
FR726271A (fr) * 1931-11-14 1932-05-26 Perrier Sa Nouveau loqueteau de fermeture pour jalousies-persiennes à lames verticales
DE556226C (de) * 1932-08-05 Johannes Heim Schlossanordnung, die bei UEberdruck im verschlossenen Raum die Tuer selbsttaetig freigibt
DE694505C (de) * 1938-06-29 1940-08-06 Alois Boehm Fensterladenverschluss
FR1117374A (fr) * 1955-01-10 1956-05-22 Salvet Terren & Co Verrou à pêne flexible
GB972175A (en) * 1962-09-27 1964-10-07 Harrison Birmingham Ltd Improvements in or relating to door bolts
US3690708A (en) * 1971-05-12 1972-09-12 Coleman Co Pressure-releasing latch assembly for picnic coolers
JPS62273380A (ja) * 1986-05-17 1987-11-27 ミクストン株式会社 回転昇降扉脇扉の係止錠
US4904007A (en) * 1989-04-07 1990-02-27 Coleman Outdoor Products, Inc. Releasing latch assembly for picnic coolers
DE4203214C1 (fr) * 1992-02-05 1993-07-08 Draegerwerk Ag, 2400 Luebeck, De
EP1241304A1 (fr) * 2001-03-16 2002-09-18 Alyn Davies Serrure de porte
US20020145289A1 (en) * 2001-04-04 2002-10-10 Cole Jesse H. Releasable safety connector

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE556226C (de) * 1932-08-05 Johannes Heim Schlossanordnung, die bei UEberdruck im verschlossenen Raum die Tuer selbsttaetig freigibt
GB202414A (en) * 1922-05-19 1923-08-20 Margaret Anne Mercer Improvements in window sash fasteners and the like
US1795502A (en) * 1928-11-01 1931-03-10 Frank A Porell Latch
FR726271A (fr) * 1931-11-14 1932-05-26 Perrier Sa Nouveau loqueteau de fermeture pour jalousies-persiennes à lames verticales
DE694505C (de) * 1938-06-29 1940-08-06 Alois Boehm Fensterladenverschluss
FR1117374A (fr) * 1955-01-10 1956-05-22 Salvet Terren & Co Verrou à pêne flexible
GB972175A (en) * 1962-09-27 1964-10-07 Harrison Birmingham Ltd Improvements in or relating to door bolts
US3690708A (en) * 1971-05-12 1972-09-12 Coleman Co Pressure-releasing latch assembly for picnic coolers
JPS62273380A (ja) * 1986-05-17 1987-11-27 ミクストン株式会社 回転昇降扉脇扉の係止錠
US4904007A (en) * 1989-04-07 1990-02-27 Coleman Outdoor Products, Inc. Releasing latch assembly for picnic coolers
DE4203214C1 (fr) * 1992-02-05 1993-07-08 Draegerwerk Ag, 2400 Luebeck, De
EP1241304A1 (fr) * 2001-03-16 2002-09-18 Alyn Davies Serrure de porte
US20020145289A1 (en) * 2001-04-04 2002-10-10 Cole Jesse H. Releasable safety connector

Also Published As

Publication number Publication date
GB0913797D0 (en) 2009-09-16
WO2008110753A8 (fr) 2009-02-19
GB2458622A (en) 2009-09-30
GB0704870D0 (en) 2007-04-18
WO2008110753A9 (fr) 2008-11-20

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