EP3269907B1 - Fire door lock with latch bolt immobiliser - Google Patents
Fire door lock with latch bolt immobiliser Download PDFInfo
- Publication number
- EP3269907B1 EP3269907B1 EP16764271.9A EP16764271A EP3269907B1 EP 3269907 B1 EP3269907 B1 EP 3269907B1 EP 16764271 A EP16764271 A EP 16764271A EP 3269907 B1 EP3269907 B1 EP 3269907B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- latch bolt
- lock
- follower
- rocker
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003100 immobilizing effect Effects 0.000 claims description 30
- 230000000284 resting effect Effects 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B13/00—Devices preventing the key or the handle or both from being used
- E05B13/005—Disconnecting the handle
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B55/00—Locks in which a sliding latch is used also as a locking bolt
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B59/00—Locks with latches separate from the lock-bolts or with a plurality of latches or lock-bolts
-
- 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
- E05B63/04—Locks or fastenings with special structural characteristics for alternative use on the right-hand or left-hand side of wings
- E05B63/042—Locks or fastenings with special structural characteristics for alternative use on the right-hand or left-hand side of wings constructed symmetrically
Definitions
- This invention relates to a fire door lock with latch bolt immobilizer, of the type which is provided with a lock housing having a central axis of symmetry and equidistant insertion openings for lock cylinders above and below the central axis for use in doors that open on the right or on the left, and a latch bolt which projects beyond the front of the lock at the level of a central axis
- the latch bolt immobilizer comprising a lever which is connected to a rocker and a guard and is able to move horizontally and in tandem into a latch bolt immobilizing position when a cam on a lock cylinder is actuated, preventing contact between an actuating end of a follower and an actuating lug of the rocker during a rotational movement of the follower, therefore said lever being able to deactivate a withdrawal of the latch bolt through the interaction between the follower and the rocker.
- the patent EP 2584124 shows a reversible lock having a lock housing and a latch projecting at the level of the central axis, having openings to accommodate the lock cylinder in both sides of the axis. Additionally, it comprises a bolt that may rotate two turns and it may be immobilized through a rib where a bit is engaged.
- the patent EP 2484851 describes a mortise lock for use in doors that open on the right or on the left comprising at least a movable latch, at least a movable bolt, a first and a second movable rod in transversally opposing directions to the movement direction of the bolt and the latch, between an unblocking position of the door, wherein the first and the second rod are withdrawn towards the inner part of the carcass, and an immobilizing position of the door, wherein it extends towards the outer part of the carcass.
- DE2023781 A1 describes a door lock with a latch bolt immobilizer having a central axis of symmetry and equidistant insertion openings for lock cylinders above and below the central axis for use in doors that open on the right or on the left.
- the lock also comprises a latch bolt which projects beyond the front of the lock at the level of a central axis and a lever which is connected to a rocker and a guard and is able to move horizontally and in tandem into its immobilizing position when a cam on the a lock cylinder is actuated, preventing contact between an actuating end of the a follower and an actuating lug of the rocker during a rotational movement of the follower.
- the rocker is built as one-piece with the latch bolt.
- this invention relates to a fire door lock as mentioned above, wherein in a resting position of the fire door lock the rocker moves vertically when the actuating end of the follower contacts the actuating lug of the rocker by acting over the follower.
- a feature of a preferred embodiment of the invention is that the lever comprises an immobilizing face being able to connect to the immobilizing active area of the latch bolt preventing the withdrawal of said latch bolt when it is in the immobilizing position.
- the latch bolt cannot be withdrawn from its position preventing thereby the violent forced movement by a card or like.
- the cam moves the guard and the lever as a whole horizontally from the resting position, where the latch bolt can be withdrawn when it acts over the follower, to the immobilizing position where the immobilizing face of the lever contacts the active area of the latch bolt exerting a limit and preventing the removal thereof.
- the lever admits different executions, and it may include immobilizing protrusions projecting from the door frame once the immobilizing position has been activated, or without them, both configurations being able to deactivate the interaction between the follower and rocker and to immobilize the latch bolt.
- a preferred mode to carry out the object of the invention is illustrated in the appended planes, referred to a fire door lock having a latch bolt immobilizer comprising a lever (6) which is connected to a rocker (7) and a guard (8) and is able to move horizontally and in tandem into a latch bolt (5) immobilizing position when a cam (13) on the lock cylinder (12) is actuated, preventing contact between an actuating end (2a) of the follower (2) and an actuating lug (7a) of the rocker (7) during its rotational movement, therefore said lever (6) being able to deactivate a withdrawal of the latch bolt (5) through the interaction between the follower (2) and the rocker (7).
- Figure 3 and 4 show, by acting over the lock cylinder (12), how the cam (13) moves the lever (6) horizontally to the immobilizing position.
- the rocker (7) and the guard (8) being connected to the lever (6), are moved horizontally and in tandem, preventing contact between the actuating end (2a) of the follower (2) and the actuating lug (7a) of the rocker (7) during its rotational movement.
- This latch bolt (5) immobilization guarantees the absence of latch bolt (5) withdrawal in an attempt of fraudulent opening when the lever (6) is in the immobilizing position.
- lever (6) admits two different executions, with or without immobilizing protrusions (6b).
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Special Wing (AREA)
- Lock And Its Accessories (AREA)
Description
- This invention relates to a fire door lock with latch bolt immobilizer, of the type which is provided with a lock housing having a central axis of symmetry and equidistant insertion openings for lock cylinders above and below the central axis for use in doors that open on the right or on the left, and a latch bolt which projects beyond the front of the lock at the level of a central axis, the latch bolt immobilizer comprising a lever which is connected to a rocker and a guard and is able to move horizontally and in tandem into a latch bolt immobilizing position when a cam on a lock cylinder is actuated, preventing contact between an actuating end of a follower and an actuating lug of the rocker during a rotational movement of the follower, therefore said lever being able to deactivate a withdrawal of the latch bolt through the interaction between the follower and the rocker.
- Currently and referring to the state of the art, the use of a central latch bolt having two followers and cylinders symmetrically arranged in the central axis of the lock is usual and known in the fire door locks. In addition to the latch bolt, there are models that incorporate a lever pulled through a cam in the lock cylinder. Such models of fire door locks are commercially available and they offer two types of solutions having the following disadvantages. Firstly, the immobilization of the turn in the follower activating the withdrawal of the latch bolt is usual in the current fire door locks. Such immobilization of the follower may cause damages in the inner mechanisms of the lock if an excessive torque is applied to the lock. Secondly, nowadays it may be possible to withdraw the latch bolt acting in the handle or through handling for a fraudulent opening, even having the lever in a projected state. Such action consisting of the withdrawal of the latch bolt causes the removal of the door from the frame where said latch bolt was accommodated, in spite of having the lever in a projected state, since such levers have excessively big clearances regarding the frame and, therefore, the intumescent joints do not perform their function correctly any more in case of fire.
- For example, the patent
EP 2584124 shows a reversible lock having a lock housing and a latch projecting at the level of the central axis, having openings to accommodate the lock cylinder in both sides of the axis. Additionally, it comprises a bolt that may rotate two turns and it may be immobilized through a rib where a bit is engaged. - The patent
EP 2484851 describes a mortise lock for use in doors that open on the right or on the left comprising at least a movable latch, at least a movable bolt, a first and a second movable rod in transversally opposing directions to the movement direction of the bolt and the latch, between an unblocking position of the door, wherein the first and the second rod are withdrawn towards the inner part of the carcass, and an immobilizing position of the door, wherein it extends towards the outer part of the carcass. -
DE2023781 A1 describes a door lock with a latch bolt immobilizer having a central axis of symmetry and equidistant insertion openings for lock cylinders above and below the central axis for use in doors that open on the right or on the left. The lock also comprises a latch bolt which projects beyond the front of the lock at the level of a central axis and a lever which is connected to a rocker and a guard and is able to move horizontally and in tandem into its immobilizing position when a cam on the a lock cylinder is actuated, preventing contact between an actuating end of the a follower and an actuating lug of the rocker during a rotational movement of the follower. The rocker is built as one-piece with the latch bolt. - In view of the above mentioned, this invention relates to a fire door lock as mentioned above, wherein in a resting position of the fire door lock the rocker moves vertically when the actuating end of the follower contacts the actuating lug of the rocker by acting over the follower.
- It is significant that the lever is able to deactivate the withdrawal mechanism of the latch bolt through the interaction between the follower and the rocker both having blocking projections and lacking them.
- Thanks to this configuration, by moving the lever to the immobilizing position, the follower turns in the void and it is unable to withdraw the latch bolt since there is no contact between the actuating end of the follower and the actuating lug of the rocker. Thus, a possible damage in any part of the inner mechanism of the lock is avoided when an excessive torque is applied in the handle, or the withdrawal of the latch bolt and a subsequent removal thereof in the housing of the frame, causing the consequent loss of pressure of the intumescent joints that guarantee the isolation from fire.
- A feature of a preferred embodiment of the invention is that the lever comprises an immobilizing face being able to connect to the immobilizing active area of the latch bolt preventing the withdrawal of said latch bolt when it is in the immobilizing position.
- Thanks to the configuration of the lever, the latch bolt cannot be withdrawn from its position preventing thereby the violent forced movement by a card or like. By acting over the cylinder of the lock, the cam moves the guard and the lever as a whole horizontally from the resting position, where the latch bolt can be withdrawn when it acts over the follower, to the immobilizing position where the immobilizing face of the lever contacts the active area of the latch bolt exerting a limit and preventing the removal thereof.
- It is relevant to point out that the lever admits different executions, and it may include immobilizing protrusions projecting from the door frame once the immobilizing position has been activated, or without them, both configurations being able to deactivate the interaction between the follower and rocker and to immobilize the latch bolt.
- For a better understanding of the nature of this invention a merely illustrative, non-limiting industrial embodiment is depicted in the appended drawings.
-
Figure 1 shows an isometric view of the fire door lock (1) having the latch bolt (5) and the lever (6) in the resting position. -
Figure 2 shows an isometric view of the fire door lock (1) having the lever (6) in the resting position and the latch bolt (5) withdrawn after actuating over the follower (2) in the opening of the door. -
Figure 3 shows an isometric view of the fire door lock (1) having a lever (6) projected towards the immobilizing position and the latch bolt (5) being immobilized. -
Figure 4 shows an isometric view of the fire door lock (1) having a lever (6) projected in the immobilizing position and the latch bolt (5) being immobilized, wherein it is also seen that the opening through the follower (2) is disabled. -
Figure 5a shows an isometric view of the lever (6) with the immobilizing face (6a), which has immobilizing protrusions (6b). -
Figure 5b shows an isometric view of the lever (6) with the immobilizing face (6a) but without immobilizing protrusions (6b). -
Figure 6 shows an isometric view of the latch bolt (5). -
Figure 7 shows an isometric view of the guard (8). -
Figure 8 shows an isometric view of the rocker (7). -
Figure 9 shows an isometric view of the actuating arm of the latch bolt (5). -
Figure 10 shows an isometric view of the follower (2).- 1. - Fire door lock
- 2. - Follower
- 2a- Actuating end
- 3. - Recovering spring of the follower (2).
- 4. - Actuating arm of the latch bolt (5).
- 4a. - Actuating lug
- 4b. - Actuating end of the latch bolt (5).
- 5. - Latch bolt
- 5a. - Casting in "U"
- 5b. - Immobilizing active area
- 6. - Lever
- 6a. - Immobilizing face
- 6b. - Immobilizing protrusions
- 6c. - Lowering part
- 6d. - Central groove
- 7. - Rocker
- 7a. - Actuating lug
- 8. - Guard
- 8a. - Protrusion of guard (8)
- 9. - Lock housing
- 10. - Front of the lock
- 11. - Recovering spring of the latch bolt (5).
- 12. - Lock cylinder
- 13. - Cam
- 14. - Central axis
- Referring to the drawings and references listed hereinbefore, a preferred mode to carry out the object of the invention is illustrated in the appended planes, referred to a fire door lock having a latch bolt immobilizer comprising a lever (6) which is connected to a rocker (7) and a guard (8) and is able to move horizontally and in tandem into a latch bolt (5) immobilizing position when a cam (13) on the lock cylinder (12) is actuated, preventing contact between an actuating end (2a) of the follower (2) and an actuating lug (7a) of the rocker (7) during its rotational movement, therefore said lever (6) being able to deactivate a withdrawal of the latch bolt (5) through the interaction between the follower (2) and the rocker (7).
- As it is seen in
figures 1 and2 , when the lock is in the resting position, by acting over the follower (2) the actuating end (2a) contacts the actuating lug (7a) of the rocker (7) moving it vertically. During the movement, the actuating lug (7a) of the rocker (7) acts against the lug (4a) of the actuating arm of the latch bolt (5), which moves the latch bolt (5) horizontally by acting the actuating end (4b) in the casting in "U" of the latch bolt (5). -
Figure 3 and4 show, by acting over the lock cylinder (12), how the cam (13) moves the lever (6) horizontally to the immobilizing position. In said position, the rocker (7) and the guard (8), being connected to the lever (6), are moved horizontally and in tandem, preventing contact between the actuating end (2a) of the follower (2) and the actuating lug (7a) of the rocker (7) during its rotational movement. - In this position it is seen that the actuating arm (2a) cannot interact with the actuating lug (7a) of the rocker (7) preventing the withdrawal of the latch bolt (5). Thus, a possible damage in any part of the inner mechanism of the lock is avoided when an excessive torque is applied in the handle, or the withdrawal of the latch bolt (5) causing a removal of said latch bolt (5) in the housing of the frame and the consequent loss of pressure of the intumescent joint that guarantee the isolation from fire.
- As it is seen in
figures 3 and4 , another feature of this invention is that, by acting over the lock cylinder (12) the cam (13) moves the lever (6) horizontally and the immobilizing face (6a) contacts to the immobilizing active area (5b) of the latch bolt (5) and immobilizes it and prevents it from withdrawal. - This latch bolt (5) immobilization guarantees the absence of latch bolt (5) withdrawal in an attempt of fraudulent opening when the lever (6) is in the immobilizing position.
- As it is seen in
figures 5a and 5b , anotherfeatures of the preferred embodiment of the invention is that the lever (6) admits two different executions, with or without immobilizing protrusions (6b).
Claims (2)
- Fire door lock with a latch bolt immobilizer, of the type provided with a lock housing (9) having a central axis of symmetry (14) and equidistant insertion openings for lock cylinders (12) above and below the central axis (14) for use in doors that open on the right or on the left, and a latch bolt (5) which projects beyond the front of the lock (10) at the level of a central axis, the latch bolt immobilizer comprising a lever (6) which is connected to a rocker (7) and a guard (8) and is able to move horizontally and in tandem into a latch bolt (5) immobilizing position when a cam (13) on a lock cylinder (12) is actuated, preventing contact between an actuating end (2a) of a follower (2) and an actuating lug (7a) of the rocker (7) during a rotational movement of the follower (2), therefore said lever (6) being able to deactivate a withdrawal of the latch bolt (5) through the interaction between the follower (2) and the rocker (7), characterized in that in a resting position of the fire door lock (1) the rocker (7) moves vertically when the actuating end (2a) of the follower (2) contacts the actuating lug (7a) of the rocker (7) by acting over the follower (2).
- Fire door lock with a latch bolt immobilizer according to claim 1, wherein the lever (6) comprises an immobilizing face (6a) able to connect to an immobilizing active area (5b) of the latch bolt (5) preventing the withdrawal of said latch bolt (5) when it is in the immobilizing position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16764271T PL3269907T3 (en) | 2015-03-13 | 2016-02-19 | Fire door lock with latch bolt immobiliser |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201530324A ES2582677B1 (en) | 2015-03-13 | 2015-03-13 | Firewall lock with latch lock |
PCT/ES2016/070106 WO2016146863A1 (en) | 2015-03-13 | 2016-02-19 | Fire door lock with latch bolt immobiliser |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3269907A1 EP3269907A1 (en) | 2018-01-17 |
EP3269907A4 EP3269907A4 (en) | 2018-10-31 |
EP3269907B1 true EP3269907B1 (en) | 2020-07-29 |
Family
ID=56878501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16764271.9A Active EP3269907B1 (en) | 2015-03-13 | 2016-02-19 | Fire door lock with latch bolt immobiliser |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP3269907B1 (en) |
ES (2) | ES2582677B1 (en) |
IL (1) | IL253897B (en) |
MX (1) | MX2017011646A (en) |
PL (1) | PL3269907T3 (en) |
PT (1) | PT3269907T (en) |
RU (1) | RU2704907C2 (en) |
WO (1) | WO2016146863A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009087464A1 (en) * | 2007-12-26 | 2009-07-16 | Goldtec Migun 2005 Ltd. | Mortise lock |
DE102009037952B4 (en) * | 2009-08-18 | 2013-10-10 | Klaus Kübler | Panic lock for use with left or right hinged doors |
IT1403921B1 (en) * | 2011-02-08 | 2013-11-08 | Iseo Serrature Spa | AMBIDESTRA LOCK TO THREAD FOR DOOR. |
DE202011106812U1 (en) * | 2011-10-18 | 2012-01-12 | Kfv Karl Fliether Gmbh & Co. Kg | Wendenschloss |
-
2015
- 2015-03-13 ES ES201530324A patent/ES2582677B1/en not_active Expired - Fee Related
-
2016
- 2016-02-19 ES ES16764271T patent/ES2820339T3/en active Active
- 2016-02-19 PT PT167642719T patent/PT3269907T/en unknown
- 2016-02-19 RU RU2017129986A patent/RU2704907C2/en active
- 2016-02-19 MX MX2017011646A patent/MX2017011646A/en unknown
- 2016-02-19 EP EP16764271.9A patent/EP3269907B1/en active Active
- 2016-02-19 PL PL16764271T patent/PL3269907T3/en unknown
- 2016-02-19 WO PCT/ES2016/070106 patent/WO2016146863A1/en active Application Filing
-
2017
- 2017-08-08 IL IL253897A patent/IL253897B/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
IL253897A0 (en) | 2017-10-31 |
PL3269907T3 (en) | 2021-01-11 |
RU2017129986A (en) | 2019-02-25 |
MX2017011646A (en) | 2018-03-07 |
ES2582677B1 (en) | 2017-06-26 |
EP3269907A4 (en) | 2018-10-31 |
WO2016146863A1 (en) | 2016-09-22 |
ES2582677A1 (en) | 2016-09-14 |
IL253897B (en) | 2021-08-31 |
ES2820339T3 (en) | 2021-04-20 |
RU2704907C2 (en) | 2019-10-31 |
RU2017129986A3 (en) | 2019-07-17 |
EP3269907A1 (en) | 2018-01-17 |
PT3269907T (en) | 2020-10-15 |
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