Classifications

• • 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
  • E05B63/0065—Operating modes; Transformable to different operating modes
• • 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
• • 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
  • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
  • E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
  • E05C9/02—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with one sliding bar for fastening when moved in one direction and unfastening when moved in opposite direction; with two sliding bars moved in the same direction when fastening or unfastening
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
  • E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
  • E05C9/18—Details of fastening means or of fixed retaining means for the ends of bars
  • E05C9/1825—Fastening means
  • E05C9/1833—Fastening means performing sliding movements
  • E05C9/1841—Fastening means performing sliding movements perpendicular to actuating bar

Definitions

• the present invention relates generally to multi-point door locks with a central lock and at least one remote locks, and more specifically to a snib assembly for a multi-point door locks in which the remote locking element is a triggered locking element which cause the locking points to fire and lock out (driven by springs) when the triggers on the remote locking element come into contact with the keeper element (mounted on the outer frame/mullion).
• the remote locking element is a triggered locking element which cause the locking points to fire and lock out (driven by springs) when the triggers on the remote locking element come into contact with the keeper element (mounted on the outer frame/mullion).
• snibs have been used on rim latches, these locks normally have a latch only that secures the door as it closes. If this style of lock accidently closes when the homeowner is outside without a key, they will become locked out.
• the snib feature is used to hold the latch in a retracted position to ensure the door doesn't accidently lock when opened and for a brief (or extended period).
• This type of snib would be applied by depressing the internal lever that retracts the latch, and once retracted, the snib (normally a reciprocating button or similar on the inner latch housing) is activated to hold the latch back. The snib would be deactivated by moving the reciprocating button or similar, to restore normal functionality to the door lock.
• Snibs have also been used on multipoint locks (lift lever) that would be typically used on uPVC or composite doors. These snibs also hold back the latch to stop accidental lock outs where the outside handle doesn't retract the latch (lever/pad feature or nightlatch) or alternatively if no outer handle was fitted. These snibs are activated by either pushing the latch back into the faceplate then sliding the snib into place or alternatively, depressing the handle to retract the latch, before sliding the snib into position.
• Some automatic multipoint locks function in a different way than a typical lift lever lock where the handle is lifted to throw the locking points prior to activating the dead lock to secure the locking mechanism.
• One known automatic multipoint lock has a trigger mounted in the remote locking elements of the lock, and as these triggers come into contact with the keeper element (mounted on the outer frame/mullion), the abutment of the trigger causes the remote locking points to fire and lock out, driven by springs in the remote locking unit.
• This style of lock has a centre lock (referred to as a gearbox) and remote locking units at an upper and lower portion of the door, separated from the centre lock.
• gearbox can be mounted higher on the face plate (Classic/heritage) rather than centrally, to give the look of a traditional rim latch from the outside of the property.
• a snib assembly for a snibbed automatic multipoint lock arrangement comprising a central lock and at least one remote lock mounted relative to an elongate faceplate, the at least one remote lock associated with the central lock by at least one elongate remote lock bar mounted for reciprocal movement parallel to the faceplate for sympathetic operation of the at least one remote lock, each remote lock comprising an automatic locking tongue biased into a fully extended, locked position by a biasing member and a trigger to releasably hold the locking tongue in a partially retracted home position and release the locking tongue through abutment of the trigger with a keeper to move to the locked out position, the snib assembly comprising
• a snibbed automatic multipoint lock arrangement comprising a central lock and at least one remote lock mounted relative to an elongate faceplate, the at least one remote lock associated with the central lock by at least one elongate remote lock bar mounted for reciprocal movement parallel to the faceplate for sympathetic operation of the at least one remote lock, each remote lock comprising an automatic locking tongue biased into a fully extended, locked position by a biasing member and a trigger to releasably hold the locking tongue in a partially retracted home position and release the locking tongue through abutment of the trigger with a keeper to move to the locked out position, the snibbed automatic multipoint lock arrangement comprising a snib assembly including
• Providing a snib assembly for a multi-point door lock in which the remote locking element is a triggered locking element which cause the locking points to fire and lock out when the triggers on the remote locking element come into contact with the keeper element (mounted on the outer frame/mullion) and a snibbed automatic multipoint lock arrangement allows an automatic multipoint lock arrangement to be moved into a snibbed position, preventing the automatic triggering of the remote locking elements if the trigger comes in contact with the keeper on the frame.
• An automatic multipoint lock arrangement (which are available in the field) for a door, window or movable leaf, comprises a central lock and at least one remote lock mounted relative to an elongate faceplate on an end edge of the door, window or movable leaf.
• Two remote locks are preferably provided, an upper remote lock and a lower remote lock.
• the remote lock(s) are associated with the central lock by at least one elongate remote lock bar mounted for reciprocal movement parallel to the faceplate for sympathetic operation of the remote lock when the central lock is operated, by either a handle to operate a latch tongue or similar or the cylinder lock in the central lock.
• Each remote lock comprises an automatic locking tongue biased into a fully extended, locked position by a biasing member, and a trigger to releasably hold the locking tongue in a partially retracted home position and to release the locking tongue through abutment of the trigger with a keeper mounted on a door frame or adjacent door, to move the locking tongue to the locked-out position.
• a user can do so using either the handle or similar or the cylinder lock in the central lock. This can withdraw the locking tongue(s) in the remote lock(s) (and preferably the lock tongue and/or latch tongue in the central lock) into a fully retracted position, allowing the door, window or movable leaf to be opened.
• the snib assembly of the invention will preferably be provided on an end edge of the lock stile of the door or window or movable leaf to which the multipoint lock arrangement is fitted.
• the end edge of the lock stile will typically face an end edge of an opposite door or window or movable leaf or a portion of the frame.
• the snib will preferably be low-profile in order to be fitted to the end edge of the lock stile of the door or window or movable leaf and be received between the end edge and the adjacent component when the door or window or movable leaf is closed.
• the snib may preferably be provided in the same end edge as the faceplate of the multipoint lock arrangement, through which the lock tongue and latch time extend.
• the snib assembly includes an abutment shoulder on the at least one elongate remote lock bar.
• a snib assembly may be provided on only one of the lock bars of the multipoint lock arrangement.
• a multipoint lock arrangement will typically include a central lock, and upper remote lock and a lower remote lock with an upper lock bar extending between the central lock and the upper remote lock and a lower lock bar extending between the central lock and the lower remote lock.
• a snib assembly may only be provided on the upper lock bar.
• the abutment shoulder on the at least one elongate remote lock bar may be provided as a part of an opening in the elongate remote lock bar.
• the opening may be T-shaped.
• the T-shaped opening may preferably be rotated through 90°.
• the T-shaped opening may preferably include a vertically extending part and a horizontally extending part.
• the vertically extending part is preferably longer than the horizontally extending part to allow the lock bar to reciprocate during normal use of the multipoint lock.
• the horizontally extending part of the T-shaped opening may preferably be shorter than the vertically extending part.
• the abutment shoulder may be provided as part of the horizontally extending part of the T-shaped opening, preferably as a horizontally extending edge of the horizontally extending part of the T-shaped opening.
• the dimension of the horizontally extending part of the T-shaped opening will preferably correspond to the outer dimension of the at least one snib rivet.
• a small amount of clearance may be provided between the respective dimensions, but any clearance is preferably minimised to decrease the amount of play in the configuration when in the snib position.
• the T-shaped opening will preferably have squared off corners.
• the provision of squared off corners will preferably increase the security of the abutment with the at least one snib rivet.
• the horizontally extending part of the T-shaped opening may preferably be provided approximately midway over the height of the vertical part.
• the horizontally extending part preferably extends laterally approximately 90° to one side of the vertical part.
• the horizontally extending part may extend on either side of the vertical part.
• a horizontally extending part is provided on one side only of the vertical part.
• the snib assembly includes at least one shaped opening in the faceplate, the at least one shaped opening having at least two opening portions offset from one another.
• the at least one shaped opening in the faceplate may preferably be an L-shaped opening.
• the preferred at least one shaped opening has an L-shape.
• the at least one shaped opening may preferably include a vertical portion and a transverse portion. The vertical portion of the at least one shaped opening in the faceplate preferably extends downwardly from the transverse portion.
• the at least one shaped opening will preferably have squared off corners.
• the provision of the squared off corners will preferably increase the security of the abutment with the at least one snib rivet.
• One or more markings are preferably provided on the faceplate relative to the shaped opening.
• one or more indicator markings may be provided to indicate the position of the snib relative to the faceplate and/or the intended position of the snib relative to the faceplate.
• a vertical marking may be provided to indicate the horizontal position and/or intended horizontal position of the snib relative to the faceplate.
• a horizontal marking may be provided to indicate the vertical position and/or intended vertical position of the snib relative to the faceplate.
• a single vertical marking and a single horizontal marking which extends on n either side of the snib face plate before and after lateral movement may be provided to indicate the position of the snib relative to the faceplate in the snib position.
• the markings may be embossed or standing out in relief from the faceplate or as a depression into the faceplate.
• the markings are provided in a permanent form.
• the markings may be simple straight lines.
• the transverse portion of the opening in the lock bar is aligned with the transverse portion of the opening in the faceplate, allowing movement of the snib into the snib position.
• a biasing force exerted by biasing members in the remote lock units to bias the remote lock tongue into the home position will preferably be exerted onto the remote lock bar which will preferably operate to hold the snib in the snib position due to friction or clamping force.
• the friction or clamping force exerted by the remote lock bar and the shaped opening in the faceplate will be preferably exerted by the edges of the transverse part of the T-shaped opening in the lock bar and the transverse part of the shaped opening in the faceplate, on the at least one snib rivet.
• the snib assembly includes a snib comprising a snib front plate extending substantially parallel with an external side of the faceplate and at least one snib rivet extending from an inner surface of the snib front plate and extending through the shaped opening in the faceplate.
• the at least one snib rivet will preferably also extend through the opening provided in the lock bar.
• the snib front plate is preferably planar.
• the snib front plate preferably extends parallel to the faceplate and abuts an outer surface of the faceplate.
• the rear surface of the snib front plate will preferably be smooth.
• a friction reducing surface or coating, or member may be applied thereto to reduce friction between the rear surface of the snib front plate and the faceplate.
• the snib front plate may be provided with an embossed or shaped outer surface.
• One or more markings may be provided on the outer surface of the snib front plate to show the position of the snib relative to the faceplate.
• the one or more markings provided on the outer surface of the snib front plate will align with the preferred indicator marks provided on the faceplate, during parts of the movement from the free position to the snib position and when the snib front plate is in the snib position.
• a vertical marking may be provided.
• a horizontal marking may be provided.
• the markings may be provided as depressions or openings into the outer surface of the snib front plate.
• the markings are simple straight lines.
• the snib front plate may be provided with gripping or holding configurations, but the provision of an embossed or shaped outer surface may provide gripping configurations.
• the snib comprises at least one snib rivet. More than one snib rivet may be provided.
• the snib rivet may be provided as an extension from a rear surface of the snib front plate.
• the snib rivet may extend substantially perpendicularly to the rear surface of the snib front plate.
• the snib rivet is preferably rectangular shaped in cross-section.
• the length of the snib rivet may preferably be the same as the approximate thickness of the lock bar plus the approximate thickness of the faceplate.
• the snib rivet may be provided with an enlarged head at an opposite end to the snib front plate.
• the enlarged head may have any shape.
• the enlarged head may preferably have a planar surface facing the rear surface of the snib front plate.
• the enlarged head may preferably be circular.
• the enlarged head may be a plate or planar body oriented substantially perpendicularly to the length of the snib rivet.
• the snib front plate and snib rivet may be provided as a one-piece construction.
• the snib front plate and/or the enlarged head may be removable from the snib rivet, such as by threaded engagement or push fit, in order to allow installation and removal. This may also allow some adjustment in clearance.
• Provision of a single snib rivet may allow for an amount of twist or rotation or torque to be exerted on the snib and/or snib front plate during operation.
• a multipart snib may counter any twist.
• a snib with more than one snib rivet may counter any twist.
• a multipart snib may comprise a front part and a rear part which engage one another through the faceplate and/or the lock bar.
• the front part of the multipart snib may comprise the front plate as described earlier and at least two rearwardly extending protrusions.
• the at least two rearwardly extending protrusions may be received in a corresponding opening provided on the rear part.
• the front part of the multipart snib may be fixed to the rear part.
• the rearwardly extending protrusions on the front part may be L-shaped.
• a first portion may extend along a rear surface of the front plate of the first part and a second portion may then extend therefrom.
• the second portion may extend perpendicularly from the first portion.
• the second portion may extend from one end of the first portion.
• the second portion may extend from an upper end of the first portion of the upper rearwardly extending protrusion and from a lower end of the first portion of the lower rearwardly extending protrusion.
• the rear part of the multipart snib may comprise a rear plate and at least two forwardly extending protrusions extending therefrom.
• the corresponding opening may be provided on or adjacent to the at least two forwardly extending protrusions of the rear part.
• the at least two rearwardly extending protrusions of the front part may be braced by the at least two forwardly extending protrusions of the rear part.
• the forwardly extending protrusions of the rear part may be smaller in length than the rearwardly extending protrusions of the front part.
• Each forwardly extending protrusions of the rear part may abut the first portion and second portion of the respective rearwardly extending protrusions of the front part.
• the corresponding opening may be shaped and dimensioned to closely receive the respective rearwardly extending protrusion.
• the front part and rear part of the multipart snib may engage to securely fix the front part and rear part.
• a snap fit or friction fit may be used to allow the front part and rear part to be separated when required.
• a free end of the rearwardly extending protrusion may be deformed after passing the rearmost surface of the rear plate of the rear part to prevent separation of the first part from the rear part.
• a depression may be provided about each corresponding opening on the rear surface of the rear part to receive any deformed portion of the free end of the rearwardly extending protrusion.
• the engagement or attachment of the front part and rear part of the multipart snib may be used to control the distance or spacing between the rear face of the front part and the forward face of the rear part.
• a spacing assembly may be provided on at least one of the forwardly extending protrusions of the rear part and/or the rearwardly extending protrusions of the front part to define the clearance or spacing.
• a stop shoulder may be provided with the corresponding opening to receive the respective rearwardly extending protrusion to a predefined depth to set the spacing between the first part and the second part. This may help to control the clearance between the face plate, lock rod and snib assembly. This control on clearance may reduce or remove the possibility of over or under riveting, therefore giving a great level of consistency in manufacture and a higher quality operational feel.
• the respective forwardly extending protrusions of the rear part and/or the rearwardly extending protrusions of the front part may each form a snib rivet.
• the provision of two or more snib rivets may counteract any twist or rotation that may arise through use of a single snib rivet. This may provide more certainty of movement in the preferred two portions of the movement between the snibbed and free positions.
• Each of the snib rivets may be received in a separate shaped opening in the faceplate.
• the snib rivets may both be received in the opening in the elongate remote lock bar.
• the movement of the snib is preferably a multipart movement comprising movements in different directions.
• the snib is moved through a two-part movement between the free position the snib position.
• a first part of the movement is preferably a vertical movement, and the second part of the movement is preferably a lateral movement.
• the vertical movement is preferably upward.
• the lateral movement is preferably sideways.
• the lateral movement will preferably move the at least one snib rivet into the snibbed position within the aligned transverse part of the T-shaped opening in the lock bar and the transverse part of the shaped opening in the faceplate, temporarily fixing the lock bar against movement.
• the requirement for the first portion of the movement being a vertical movement will preferably prevent accidental but not determined movement of the snib assembly into the snibbed position.
• the movement will preferably be a vertical movement first and then a lateral movement into the snib position.
• a lateral movement followed by vertical movement is then preferably required to move the snib to the free position.
• the movement of the snib from the snib position to the free position may preferably require that the biasing force be removed or at least lessened in order to move the snib to the free position. This may be done by operating the handle or the cylinder of the central lock.
• the movement of the snib from the free position to the snib position and vice versa will preferably be manual, operated by a user.
• the movement of the snib is preferably such that it requires the door or window or movable leaf to be open when operating the snib in order to have access to the snib being provided on the end edge of the door or window or movable leaf.
• Figure 1 show a snibbed automatic multipoint lock arrangement.
• the automatic multipoint lock arrangement comprises a central lock 10, an upper remote lock 11 and a lower remote lock (not shown) mounted relative to an elongate faceplate 12 which is to be located on an end edge of the door, window or movable leaf.
• Two remote locks are preferably provided, an upper remote lock 11 and a lower remote lock, but only the upper lock is shown in Figures 1 to 3 .
• the remote locks are associated with the central lock 10 by a remote lock bar 13 mounted for reciprocal movement parallel to the faceplate 12 for sympathetic operation of the remote lock when the central lock 10 is operated, by either a handle to operate a latch tongue or similar, or the cylinder lock in the central lock 10.
• each remote lock comprises an automatic locking tongue 72 biased into a fully extended, locked out position ( Figure 2 , Figure 7 ) by a biasing spring 75, and a trigger 74 to releasably hold the locking tongue 72 in a partially retracted home position ( Figure 1 , Figure 8 ) and to release the locking tongue 72 through abutment of the trigger 74 with a keeper mounted on a door frame or similar, to move the locking tongue 72 to the locked-out position (( Figure 2 , Figure 7 ) under the bias.
• a user can do so using either the handle or similar or the cylinder lock in the central lock 10. This can withdraw the locking tongue 72 in the remote lock (and preferably the lock tongue and/or latch tongue in the central lock 10) into a fully retracted position ( Figure 3 , Figure 9 ), allowing the door to be opened.
• Figure 1 shows an automatic multi-point lock in its home (partially retracted/extended) position, in which the trigger 74 in the remote lock 11 (shown in detail in Figure 10 ) protrudes slightly from the lateral side of the locking tongue 72. In this position, the remote lock 11 is ready to be fired if the trigger 74 is activated by coming into contact with the keeper. Triggering will move the remote lock into the fully extended, locked out position shown in Figure 2 and Figure 7 .
• Figure 3 shows the automatic multi-point lock in its fully retracted state where both the remote lock tongues 72 and latch 15 in the central lock 10 are retracted into the face plate 12 of the lock.
• the multi-point lock is either activated by depressing a lever/handle or alternatively rotating the cam on a lock cylinder, which causes the latch 15 and remote lock tongues 72 to retract fully ( Figure 3 , Figure 9 ).
• the snib assembly 16 could be activated to trap the locking mechanism.
• the snib function could be deactivated by again depressing the lever or activating the euro cylinder to remove the pressure from the snib member, allowing easy movement.
• FIG. 4 to 6 A central lock from an example multi-point lock assembly is shown in Figures 4 to 6 .
• the cam of the euro cylinder will rotate, pushing latch retraction arm A upwards.
• Latch retraction arm A will act on a raised section of drive plate C to move the drive plate upwards, which in turn, will drive the lock bar 13 mounted behind the face plate upwards (for the upper remote lock 11) causing the remote locking tongue 72 to retract.
• the latch retraction component B will rotate in a clockwise direction causing the latch 15 in the centre lock 10 to retract. Once in this retracted state the snib 17 can be lifted and slid laterally to hold the lock mechanism in the retracted state.
• the lever If retracting the remote locking tongue 72/centre latch 15 via the lever (fitted into aperture E - Follower), the lever is depressed causing the latch retraction component B to rotate in a clockwise direction. As the latch retraction component B rotates the latch retraction arm A will act on a raised section of drive plate C to move the drive plate upwards. This upwards movement will drive the lock bar 13 mounted behind the face plate 12 upwards (for the upper remote lock 11) causing the remote locking tongue 72 to retract. Once in this retracted state, the snib 17 could be lifted and slid laterally to hold the lock mechanism in the retracted state.
• the snib 17 is provided to retard the operation of the automatic locking tongue 72, to ensure the remote locking tongue 72 and centre latch 15 do not engage with the frame side keeper, to cause a lock out.
• the snib 17 (a form of which is illustrated in Figure 12 ) is first lifted vertically and then slid to the side, as shown in Figures 13 to 15 ) to align the markings on the snib member front plate 18 with the padlock (stamped into face plate 12 of the multi-point lock assembly). Movement of the snib member front plate 18 causes movement of the snib rivet 19 on the rear side of the snib member front plate 18.
• a vertical marking 21 is provided to indicate the horizontal position and/or intended horizontal position of the snib 17 relative to the faceplate 12.
• two horizontal markings 22 may be provided to indicate the vertical position and/or intended vertical position of the snib 17 relative to the faceplate 12.
• a single vertical marking 21 and two horizontal markings 22, one on either side of the snib face plate 18, are provided to indicate the position of the snib 17 relative to the faceplate 12 in the snib position.
• the markings 21, 22 may be embossed or standing out in relief from the faceplate 12 or as a depression into the faceplate 12.
• the markings are provided in a permanent form.
• the markings may be simple straight lines as shown.
• the movement of the snib 17 up and to the side holds the lock bar 13 on the inside of the faceplate 12 in a position to prevent movement of the remote locking tongues 72, once the remote locking tongues 72 have been moved from the home position to the fully retracted position, until the snib is removed.
• the snib 17 When activated, the snib 17 (particularly the snib rivet 19) is held in activation by the downward force exerted on the lock rod 13 by the springs 75 mounted in the remote lock 11.
• the remote lock tongues 72 are retracted via the handle lever (not shown, downward movement) or alternatively by rotating the cylinder. This movement will cause the drive plate in the centre gearbox 70 and the attached lock rods, to move upwards. This upwards movement will act on the remote unit drive plate 79 causing the remote unit drive plate 79 to move upwards as shown in the movement from Figure 8 to Figure 9 , retracting the lock bars 13. This will abut the lockout member 84, forcing it upwards against the bias of torsion spring 73, allowing the retraction of the remote lock tongue 72 from the position shown in Figure 7 , to the position shown in Figure 8 .
• the snib if engaged, would be applied whilst the remote lock case is in the retracted state (shown in Figure 9 .
• the remote lock case By engaging the snib, it would basically trap the remote lock rods in position, holding the remote unit drive plate 79 in the raised position whilst keeping the remote lock tongue 72 retracted (in the positions shown in Figure 9 ).
• This retracted state would mean that spring 15 would be in the compressed configuration, therefore exerting force on the rocker arm 83.
• This force at point 70A would then try to push the remote unit drive plate 79 and the attached lock bar 13, downwards which would therefore apply force to the snib to hold it in the engaged condition.
• the system sits in the home position normally, is retracted before the snib 17 is applied to hold the system it in the snibbed/retracted position and then released by movement of any one or more of the snib 17, depressing the lever or activating the euro cylinder.
• Figures 13 to 18 show the positions of the snib 17 in the home, lifted and locked positions from the faceplate side and from the reverse side.
• Figures 13 and 16A show the snib in the home position during normal operation.
• the lock bar 13 will move upwards to the position shown in Figure 16B , this in turn will move item 79 in the remote units resulting in the retraction of bolt 72, and the snib remains in the home position (the lock bar moves about the snib).
• the snib can then be lifted from its home position in Figure 16B to the lifted position in Figures 14 and 17 , prior to being moved into the snibbed position shown in Figures 15 and 18 by sliding it in a horizontal direction after it has been lifted.
• the movement of the snib 17 is controlled by a shaped cut-out in both the face plate 12 of the multi-point lock and the lock bar 13. Once the multi-point lock is in the retracted state, the slot in both the face plate 12 and the lock bar 13 align, allowing the snib 17 to be lifted then slid to one side to engage the snib function.
• Figures 19 to 22 show the face plate 12 ( Figures 19 and 20 ) and lock bar 13 behind ( Figures 21 and 22 ) and the face plate 12 and lock bar 13 from behind (right hand side) with the snib 17 removed for clarity.
• the abutment shoulder on the remote lock bar 13 is provided as a part of a T-shaped opening in the elongate remote lock bar 13, best illustrated in Figures 21 and 22 .
• the T-shaped opening includes a vertically extending part 31 and a horizontally extending part 32.
• the vertically extending part 31 is longer than the horizontally extending part 32 to allow the lock bar 13 to reciprocate during normal use of the multipoint lock.
• the horizontally extending part 32 of the T-shaped opening 30 is shorter than the vertically extending part 31.
• the abutment shoulder may be provided as part of the horizontally extending part 32 of the T-shaped opening 30, preferably as a horizontally extending edge of the horizontally extending part 32 of the T-shaped opening 30.
• the dimension of the horizontally extending part 32 of the T-shaped opening 30 will preferably correspond to the outer dimension of the snib rivet 19.
• a small amount of clearance may be provided between the respective dimensions, but any clearance is preferably minimised to decrease the amount of play in the configuration when in the snibbed position.
• the T-shaped opening 30 will preferably have squared off corners as shown.
• the provision of squared off corners will preferably increase the security of the abutment with the snib rivet 19.
• the horizontally extending part 32 of the T-shaped opening 30 is provided approximately midway over the height of the vertical part 31.
• the horizontally extending part 32 preferably extends laterally approximately 90° to one side of the vertical part 31.
• the shaped opening 33 in the faceplate 12 is preferably an L-shaped opening as shown in Figures 19 and 20 .
• the shaped opening 33 includes a vertical portion 34 and a transverse portion 35.
• the vertical portion 34 of the shaped opening 33 in the faceplate 12 preferably extends downwardly from the transverse portion 35.
• the shaped opening 33 will preferably have squared off corners as shown.
• the provision of the squared off corners will preferably increase the security of the abutment with the snib rivet 19.
• the snib 17 comprising a snib front plate 18 extending substantially parallel with an external side of the faceplate 12 and a snib rivet 19 extending from an inner surface of the snib front plate 18 and extending through the shaped opening 33 in the faceplate 12 and through the opening 30 provided in the lock bar 13.
• the snib front plate 18 is planar and in use, extends parallel to the faceplate 12, abutting an outer surface of the faceplate 12.
• the rear surface of the snib front plate 18 is preferably smooth.
• the snib front plate 18 may be provided with an embossed or shaped outer surface as shown in Figure 12 .
• a vertical marking 25 is provided.
• a pair of horizontal markings 26 are provided.
• the markings 25, 26 provided on the outer surface of the snib front plate align with the preferred indicator marks 21, 22 provided on the faceplate 12, during parts of the movement from the free position to the snibbed position and when the snib front plate is in the snibbed position.
• the markings 25, 26 are provided as depressions or openings into the outer surface of the snib front plate. In the illustrated embodiment, the markings 25, 26 are simple straight lines.
• the snib rivet 19 is provided as an extension from a rear surface of the snib front plate 18.
• the snib rivet 19 extends substantially perpendicularly to the rear surface of the snib front plate 18.
• the snib rivet 19 illustrated is rectangular shaped in cross-section. The length of the snib rivet 19 is approximately the same as the thickness of the lock bar 13 plus the thickness of the faceplate 12.
• the snib rivet 19 illustrated in Figure 12 is provided with an enlarged head 20 at an opposite end to the snib front plate 18.
• the illustrated enlarged head 20 has a planar surface facing the rear surface of the snib front plate 18.
• the enlarged head 20 is a plate or planar body oriented substantially perpendicularly to the length of the snib rivet 19.
• the snib front plate 18 and snib rivet 19 may be provided as a one-piece construction.
• the snib front plate 18 and/or the enlarged head 20 may be removable from the snib rivet 19 in order to allow installation and removal. This may also allow some adjustment in clearance.
• the movement of the snib 17 is preferably a multipart movement comprising movements in different directions.
• the snib 17 is moved through a two-part movement between the free position the snib position.
• a first part of the movement is preferably a vertical movement, and the second part of the movement is preferably a lateral movement.
• the lateral movement will preferably move the snib rivet 19 into the snibbed position within the aligned horizontally extending part 32 of the T-shaped opening 30 in the lock bar 13 and the transverse part 35 of the shaped opening 33 in the faceplate 12, temporarily fixing the lock bar 13 against movement.
• the movement will preferably be a vertical movement first and then a lateral movement into the snib position.
• a lateral movement followed by vertical movement is then preferably required to move the snib to the free position.
• the movement of the snib 17 from the snibbed position to the free position may preferably require that the biasing force be removed or at least lessened in order to move the snib to the free position. This may be done by operating the handle or the cylinder of the central lock.
• the movement of the snib 17 from the free position to the snib position and vice versa will preferably be manual, operated by a user.
• the movement of the snib 17 is preferably such that it requires the door or window or movable leaf to be open when operating the snib 17 in order to have access to the snib 17 being provided on the end edge of the door or window or movable leaf.
• FIG. 23 to 32 An embodiment of a multipart snib with two snib rivets, is shown in Figures 23 to 32 .
• the multipart snib comprises a front part 230 (shown in Figures 26 and 27 ) and a rear part 231 (shown in Figures 28 and 29 ) which engage one another through the faceplate 12 and the lock bar 13 as shown in Figres 23 and 24 and in a manner similar to that described above.
• the front part 230 of the multipart snib comprises a front plate 18 as described above and two rearwardly extending protrusions 232.
• the two rearwardly extending protrusions 232 are received in a corresponding opening 233 provided on the rear part 231.
• the front part 230 of the multipart snib is thereby, fixed to the rear part 231.
• the rearwardly extending protrusions 232 on the front part 230 are L-shaped.
• a first portion 234 extends along a rear surface of the front plate 18 of the first part 230 and a second portion 235 extends therefrom perpendicularly.
• the second portion 235 extends from an upper end of the first portion 234 of the upper rearwardly extending protrusion 232 and from a lower end of the first portion 234 of the lower rearwardly extending protrusion 234.
• the rear part 231 of the multipart snib comprise a rear plate 236 and two forwardly extending protrusions 237 extending therefrom.
• the corresponding opening 233 is provided adjacent to a respective forwardly extending protrusion 237 of the rear part 231.
• the forwardly extending protrusions 237 of the rear part 231 are smaller in length than the rearwardly extending protrusions 232 of the front part 230.
• Each forwardly extending protrusion 237 of the rear part 231 abuts the first portion 234 and second portion 235 of a respective rearwardly extending protrusion 232 of the front part 230. In this way, the rearwardly extending protrusions 232 of the front part 230 are braced by the two forwardly extending protrusions 237 of the rear part 231.
• the corresponding opening 233 is shaped and dimensioned to closely receive the respective rearwardly extending protrusion 232.
• the front part 230 and rear part 231 of the multipart snib engage to securely fix the front part 230 and rear part 231 together.
• a snap fit or friction fit may be used to allow the front part 230 and rear part 231 to be separated when required.
• a free end of the rearwardly extending protrusion may be deformed after passing the rearmost surface of the rear plate 236 of the rear part 231 to prevent separation of the first part 230 from the rear part 231.
• a depression 238 may be provided about each corresponding opening 233 on the rear surface of the rear part 231 to receive any deformed portion of the free end of the rearwardly extending protrusion 232.
• Each of the snib rivets formed by the forwardly extending protrusions 237 of the rear part 231 and the rearwardly extending protrusions232 of the front part 230 may be received in a separate shaped opening 33 in the faceplate 12 shown in Figures 31 and 32 .
• the snib rivets may both be received in the opening 31 in the elongate remote lock bar 13 shown in Figure 30 .
• a pair of vertical markings 25 is provided on the front plate 18.
• the markings 25 provided on the outer surface of the snib front plate 18 align with the preferred indicator mark 21 provided on the faceplate 12 when the snib front plate 18 is in the snibbed position, to show a stylised representation of a lock.

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• Lock And Its Accessories (AREA)

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Citations (4)

• 2025
  • 2025-01-28 EP EP25154464.9A patent/EP4596817A1/de active Pending

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