EP1715121A2 - Dispositif de verrouillage - Google Patents

Dispositif de verrouillage Download PDF

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Publication number
EP1715121A2
EP1715121A2 EP06252045A EP06252045A EP1715121A2 EP 1715121 A2 EP1715121 A2 EP 1715121A2 EP 06252045 A EP06252045 A EP 06252045A EP 06252045 A EP06252045 A EP 06252045A EP 1715121 A2 EP1715121 A2 EP 1715121A2
Authority
EP
European Patent Office
Prior art keywords
latch
keep
bolt
engaged
latch mechanism
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.)
Ceased
Application number
EP06252045A
Other languages
German (de)
English (en)
Other versions
EP1715121A3 (fr
Inventor
Ian Lowther
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.)
PC Henderson Ltd
Original Assignee
PC Henderson 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 PC Henderson Ltd filed Critical PC Henderson Ltd
Publication of EP1715121A2 publication Critical patent/EP1715121A2/fr
Publication of EP1715121A3 publication Critical patent/EP1715121A3/fr
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2084—Means to prevent forced opening by attack, tampering or jimmying
    • E05B17/2088—Means to prevent disengagement of lock and keeper
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/12—Locks or fastenings with special structural characteristics with means carried by the bolt for interlocking with the keeper
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/18—Locks or fastenings with special structural characteristics with arrangements independent of the locking mechanism for retaining the bolt or latch in the retracted position
    • E05B63/20—Locks or fastenings with special structural characteristics with arrangements independent of the locking mechanism for retaining the bolt or latch in the retracted position released automatically when the wing is closed
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/0021—Locks or fastenings for special use for overhead or roll-up doors, e.g. garage doors

Definitions

  • the present invention relates to an improved latch mechanism, and in particular to such a mechanism as used to secure a door.
  • the invention has particular application in the locking of garage doors where a self-actuating latch engagement is preferable to a secondary operation at the door handle.
  • garage doors are constructed where the main door acts as a single leaf.
  • This door leaf can be supported in a number of different ways to allow the leaf to be moved between a fully open and fully closed position. When moved into the closed position it is advantageous to have a locking system that provides security such that the door cannot be opened by any unauthorized person.
  • Many doors are provided with a securing method that allows a door to close and for a latch to automatically engage.
  • the type of latch is often described as a 'slam latch' due to the automatic engagement and also in regard to the slam action which is associated with the force required to allow the door to override the resistance in the latch during closing.
  • the present invention seeks to provide an improved latch mechanism.
  • the present invention provides a latch mechanism for a closure comprising: a keep means for mounting on one of a frame and a movable member of said closure; a latch body for mounting on the other of said frame and movable member of said closure; a latch means mounted for movement relative to said body between a first, disengaged position wherein said latch means is disengaged from said keep means and a second, engaged position wherein said latch means is engaged with said keep means; and means for preventing movement of said latch means from said engaged to said disengaged position in response to movement of said latch body away from said keep means.
  • FIG. 1 shows a framed canopy door in which the operating or lifting gear is provided by a known torsion spring assembly.
  • a door leaf 2 is shown supported within a frame 4, comprising a frame head 6 and first and second frame legs.
  • the door leaf 2 is supported by first and second canopy arms 7 that are free to pivot within respective first and second head brackets fixed at the frame head.
  • the door is shown from the inside. On opening the top of the door moves inside the opening and the bottom of the door moves outwards and upwards. The door is shown in the closed position where top of the door leaf 2 has abutted against the top of the frame.
  • a second stop 9 prevents the bottom of the door leaf 2 moving into the inside space.
  • FIG. 2 A representation of a typical latch arrangement will now be described with reference to Figure 2.
  • the top of a door leaf 2 is shown moving in the direction shown by arrow 'A' towards the stop 4 that is attached to or part of the frame head 6.
  • a latch keep 8 with a tapered lead section 10 is secured to the frame head 6.
  • a bolt 12 is located in a latch body 14.
  • the bolt 12 is loaded by a spring 16. As the door leaf 2 moves towards the frame 6 the ramp face of the bolt 12 comes into contact with the tapered face 10 of the keep 8. The bolt 12 is forced down into the latch body 14, compressing the spring 16. When the door leaf 2 meets stop 4 the bolt 12 is aligned with the opening in the keep 8 and the spring 16 forces the bolt into engagement with the keep 8. The door leaf 2 cannot then be opened without some action to disengage the bolt 12 from the keep 8.
  • a link or cable mechanism not shown in Figure 2 connects the door handle (not shown) to the connecting point 18 of the bolt 12. By rotating the handle the user can apply a downward motion to the bolt 12 such that the latch is disengaged and the door can be opened.
  • This mechanism is commonly used on garage doors. There are other mechanisms (not shown) that use torsion springs to activate a bolt that pivots into engagement with a keep. Further, some of these types of mechanism have bolts that engage against relatively flat plates (not shown) when the door moves to the closed position.
  • FIG. 3 A first embodiment of the invention is shown in Figure 3.
  • the top of a door leaf 2 of a typical "up and over" garage door is shown as moving in the closing direction of arrow 'A' towards the stop 4 that is attached to or part of the frame head 6.
  • a keep means in the form of a latch keep 8 with a tapered face or lead section 10 is secured to the frame head 6.
  • a latch means in the form of a bolt 12 is located in a latch body 16 for sliding movement between a first, disengaged position and a second, engaged position.
  • the bolt 12 is biased by a resilient means in the form of a spring 22 towards the engaged position.
  • the bolt has a notch or slot 21 in its trailing edge which is shaped to engage around an edge 15 of an opening 11 of the keep 8.
  • the bolt 12 has a lateral guide pin 17 that engages in a guide slot 20 formed in the latch body.
  • the guide slot is shaped such that as the bolt is retracted towards its disengaged position the bolt also moves laterally to the right as seen in Figure 3.
  • a link or cable mechanism not shown in Figure 3 connects the door handle (not shown) to the connecting point 18 of the bolt 12.
  • the user By rotating the handle the user can apply a downward motion to the bolt 12 such that it begins to move.
  • the path controlled by the guide slot 20 forces the guide pin 17 to move the bolt 12 to the right as seen in Figure 3 such that the slot 21 disengages from the edge 11 and the bolt 12 moves out of engagement with the keep 8.
  • the bolt 12 can then be retracted further into the fully disengaged position such that the door can be opened.
  • FIG. 4 A second embodiment of the invention is shown in Figure 4.
  • a retaining means in the form of a slide 30 is slidably located in a groove or bore 19 in the latch body 14.
  • the bore 19 intersects the path of the bolt 12 such that the slide 30 can be moved between a first position where it intersects the path of the bolt 12 and retains the bolt in its disengaged position and a second, withdrawn position where it releases the bolt 12 for movement into its keep engaging position.
  • a biasing means in the form of spring 32 biases the slide 30 towards its first position.
  • a link or cable mechanism not shown in Figure 4 connects the door handle (not shown) to the connecting point 18 of the bolt 12. By rotating the handle the user the user can apply a downward motion to the bolt 12 such that it moves out of engagement of the keep 8.
  • FIGS 5a, 5b and 5c show a latch mechanism similar to that shown in Figure 3, but here the latch body 14 is provided with a horizontally extending flange 40 formed on an extension 42 of the latch body, which extends above the latter, such that when the door leaf is moved into its closed position the extension 40 lies above a support member 42 and thus prevents the door leaf 2 and the frame head 6 being moved apart sufficiently to allow the bolt 12 to clear the opening 11.
  • An alternative or additional security feature is the provision of a pin or spigot 24 on the frame head 6 which engages in a slot in a vertical plate 26, secured to the door leaf 2. This serves the purpose of again preventing the door leaf 2 and frame head 6 being moved apart sufficiently to cause the bolt 12 to clear the opening 11.
  • a further embodiment (not shown) but similar in operation to that shown in Figure 4 could incorporate a slide mechanism operating in a different plane to that shown such that the latch mechanism could be applied to a door leaf moving in a vertical orientation.
  • the line of action of the slide 30 would simply be modified to accommodate the local movement of the door leaf.
  • a further embodiment might incorporate a latch mechanism shown in Figure 2 but with the addition of a secondary device to engage the door leaf with the frame. This might be achieved with either a protrusion supported by the door leaf that engaged into a recess in the frame or a protrusion from the frame engaging into a provision on the door leaf.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Lock And Its Accessories (AREA)
EP06252045A 2005-04-12 2006-04-12 Dispositif de verrouillage Ceased EP1715121A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0507346A GB0507346D0 (en) 2005-04-12 2005-04-12 Latch

Publications (2)

Publication Number Publication Date
EP1715121A2 true EP1715121A2 (fr) 2006-10-25
EP1715121A3 EP1715121A3 (fr) 2007-01-10

Family

ID=34610974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06252045A Ceased EP1715121A3 (fr) 2005-04-12 2006-04-12 Dispositif de verrouillage

Country Status (2)

Country Link
EP (1) EP1715121A3 (fr)
GB (1) GB0507346D0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2482228A (en) * 2010-07-24 2012-01-25 Novoferm Gmbh Overhead door with multipoint locking

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE230612C (fr) *
US1356612A (en) * 1918-08-05 1920-10-26 Chester F Hardon Door-latch
US3831580A (en) * 1973-11-19 1974-08-27 Corning Glass Works Lockable oven door latch
US5087088A (en) * 1991-02-13 1992-02-11 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration J-hook latching device
EP1111169A1 (fr) * 1999-12-22 2001-06-27 Ankerslot bv Fermeture électromécanique pour portes et analogue
US20050056387A1 (en) * 2003-09-17 2005-03-17 Fletcher Kenneth W. Garage door reinforcement device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE230612C (fr) *
US1356612A (en) * 1918-08-05 1920-10-26 Chester F Hardon Door-latch
US3831580A (en) * 1973-11-19 1974-08-27 Corning Glass Works Lockable oven door latch
US5087088A (en) * 1991-02-13 1992-02-11 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration J-hook latching device
EP1111169A1 (fr) * 1999-12-22 2001-06-27 Ankerslot bv Fermeture électromécanique pour portes et analogue
US20050056387A1 (en) * 2003-09-17 2005-03-17 Fletcher Kenneth W. Garage door reinforcement device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2482228A (en) * 2010-07-24 2012-01-25 Novoferm Gmbh Overhead door with multipoint locking

Also Published As

Publication number Publication date
GB0507346D0 (en) 2005-05-18
EP1715121A3 (fr) 2007-01-10

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