EP0268335A1 - Locksets - Google Patents
Locksets Download PDFInfo
- Publication number
- EP0268335A1 EP0268335A1 EP19870202207 EP87202207A EP0268335A1 EP 0268335 A1 EP0268335 A1 EP 0268335A1 EP 19870202207 EP19870202207 EP 19870202207 EP 87202207 A EP87202207 A EP 87202207A EP 0268335 A1 EP0268335 A1 EP 0268335A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bolt
- lock
- keep assembly
- electromagnetic actuator
- locking member
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
- E05B47/0676—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle
- E05B47/0684—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle radially
- E05B47/0688—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle radially with a pivotally moveable coupling element
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
- E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
- E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
Definitions
- the present invention relates to locksets.
- lockset comprising a lock with an extendable and retractable bolt, and a keep assembly for the reception of the bolt when extended; mechanism within the lock for retracting the bolt in response to a user-operable control member, (a handle follower), which mechanism includes a link member movable between positions in which it respectively engages and disengages the operative connection between the bolt and follower; and the keep assembly including an electromagnetic actuator selectively actuable to engage the bolt when received in the keep assembly thereby to resist the retraction thereof, and simultaneously to operate the link member to disengage the operative connection between the bolt and follower.
- the electromagnetic actuator is a double-acting solenoid which is arranged to drive a pin vertically into a slot in the top of the bolt head to deadlock the bolt and simultaneously pivot the link member free of the follower. While this arrangement in general works well there is a limit to the forcing load which the solenoid pin can in practice resist and it is desirable that higher expected forcing loads be resisted in a lock intended, for example, for use in an access-control system within a secure building. Certain problems have also been experienced in maintaining a correct alignment between the solenoid pin and bolt head slot in use of this lockset.
- the present invention accordingly seeks to provide an alternative lockset in which the above-mentioned drawbacks can be overcome and resides in a lockset comprising a lock with an extendable and retractable bolt, and a keep assembly for the reception of said bolt when extended; mechanism within the lock for retracting the bolt in response to a user-operable control member; a locking member connected to the bolt and movable between positions in which it is respectively engageable with an abutment within the lock so as to deadlock the bolt against forced retraction and free from engageability with said abutment so as to free the bolt for retraction; and the keep assembly including an electromagnetic actuator selectively actuable to operate said locking member when the bolt is received in the keep assembly thus to place said member in the position in which it deadlocks the bolt as aforesaid.
- said locking member serves also as a link member in the operative connection between the user-operable member and the bolt and disengages that connection when placed in its deadlocking position, similarly in this respect to the link member of our above-described prior lockset, although this is not an essential feature of the invention.
- the aforesaid locking member is acted upon by a separate actuating member borne within the lock which has a portion lying adjacent to the keep assembly when the door or other closure to which the lock is fitted is closed, (or the locking member itself has such a portion), and which is engageable by the electromagnetic actuator, or a member operated thereby, through an aperture in the case of the lock.
- the illustrated lockset is in the form of a mortice latch having a bolt 101 biased by a spring 102 to extend from a lockcase 103 through its forend 103A.
- the bolt 101 comprises a slidable plate 104 up on which is fixed the usual bevelled head 105, so that a door fitted with the latch can slam shut with the bolt head engaging in an associated keep assembly 106.
- a rotatable follower 107 within the lockcase which can be turned by handles (not shown) provided on each side of the door. This follower is biased to its rest position shown in the drawing by a spring 108 connected to it through a tie 109.
- a link bar 110 is pivoted to the bolt by a pin 111, and has a hooked tail portion 112 which in the condition shown in Figure 1 lies in the path of movement of an arm 113 extending from the follower 107. Accordingly, turning the follower 107 clockwise (in the sense of the drawing) by either of the external handles causes the arm 113 to pick up the tail 112 of the bar 110 and thereby withdraw the bolt from the keep assembly 106 through the bar 110 and pin joint 111.
- the lock functions as a normal doorlatch permitting passage through the doorway by any person operating the follower 107.
- the keep assembly 106 of this lockset houses a double-acting solenoid unit 114 ( Figure 2).
- This solenoid unit is used to drive, through a bell-crank 135 pivoted at 136, a horizontally-reciprocable plunger 115, shown in its retracted (leftward) position in Figure 1 and in its extended (rightward) position in Figure 2.
- the solenoid unit in this example is equipped with a pair of solenoids acting in opposite directions upon a core 114A connected to the bell-crank 135 and arranged to retain the plunger 115 in whichever of its two positions it has been set until the next actuation of the appropriate solenoid's field coil(s).
- an upstanding nose formation 119 on the top of the bar 110 is placed adjacent to a fixed post 120 in the lockcase so that the post 120, lying in the path of the formation 119 in the sense of retracting movement of the bolt 101, will act to deadlock the bolt against forced retraction.
- the end 112 of the bar will be lifted clear of the path of the follower arm 113, so if the follower is turned by a person operating either door handle no load can be transmitted to the bolt. If, however, an attempt is made by some other means to put force on the bolt 101 in its retracting direction, this will be securely resisted by the nose 119 of bar 110 engaging the post 120 as stated above.
- the illustrated lockset forms part of an electronic access-control system for the door to which it is fitted intended to operate at different levels of security at different times. That is to say during “off-guard” periods access is permitted through the doorway to all persons encountering the door. During “on-guard” periods, however, access is to be restricted only to duly authorised personnel.
- the "off-guard” and “on-guard” periods may be preprogrammed (for example to accord with the normal opening times of a suite of offices) and/or selectable at will at a central control station, in accordance with the parameters of the particular system installed, the details of which do not form part of the present invention.
- the solenoid unit 114 is automatically pulsed again on closure of the door to return the plunger 115 into engagement with the lever 130.
- micro-switches may be fitted in the keep assembly 106 to detect the presence or absence of the bolt head within the keep and to detect in which of its two positions the plunger 115 lies at any time.
- the position of the bolt may alternatively be sensed by means of a magnet 137 within the bolt head operating a reed contact in the keep assembly.
- a lever or other suitable manually-operable device accessible only from the inside of the doorway, may be provided on the keep assembly to retract the plunger.
- Figure 2 also illustrates an option for bypassing the electrical operation of the lock from the outside by means of a key-operated locking cylinder 138 mounted in the keep assembly whose thrower 139 can operate the plunger 115 through an arm 140 attached to the lower end of the solenoid core 114A.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
- The present invention relates to locksets.
- There is described inter alia in our United Kingdom patent specification no. 2161856 a lockset comprising a lock with an extendable and retractable bolt, and a keep assembly for the reception of the bolt when extended; mechanism within the lock for retracting the bolt in response to a user-operable control member, (a handle follower), which mechanism includes a link member movable between positions in which it respectively engages and disengages the operative connection between the bolt and follower; and the keep assembly including an electromagnetic actuator selectively actuable to engage the bolt when received in the keep assembly thereby to resist the retraction thereof, and simultaneously to operate the link member to disengage the operative connection between the bolt and follower. More particularly, the electromagnetic actuator is a double-acting solenoid which is arranged to drive a pin vertically into a slot in the top of the bolt head to deadlock the bolt and simultaneously pivot the link member free of the follower. While this arrangement in general works well there is a limit to the forcing load which the solenoid pin can in practice resist and it is desirable that higher expected forcing loads be resisted in a lock intended, for example, for use in an access-control system within a secure building. Certain problems have also been experienced in maintaining a correct alignment between the solenoid pin and bolt head slot in use of this lockset.
- The present invention accordingly seeks to provide an alternative lockset in which the above-mentioned drawbacks can be overcome and resides in a lockset comprising a lock with an extendable and retractable bolt, and a keep assembly for the reception of said bolt when extended; mechanism within the lock for retracting the bolt in response to a user-operable control member; a locking member connected to the bolt and movable between positions in which it is respectively engageable with an abutment within the lock so as to deadlock the bolt against forced retraction and free from engageability with said abutment so as to free the bolt for retraction; and the keep assembly including an electromagnetic actuator selectively actuable to operate said locking member when the bolt is received in the keep assembly thus to place said member in the position in which it deadlocks the bolt as aforesaid.
- In a preferred embodiment said locking member serves also as a link member in the operative connection between the user-operable member and the bolt and disengages that connection when placed in its deadlocking position, similarly in this respect to the link member of our above-described prior lockset, although this is not an essential feature of the invention.
- Preferably also, the aforesaid locking member is acted upon by a separate actuating member borne within the lock which has a portion lying adjacent to the keep assembly when the door or other closure to which the lock is fitted is closed, (or the locking member itself has such a portion), and which is engageable by the electromagnetic actuator, or a member operated thereby, through an aperture in the case of the lock.
- An example of a lockset in accordance with the present invention will now be more particularly described with reference to the accompanying drawings, in which:
- Figure 1 is a vertical section through the lockset shown in an "off-guard" condition; and
- Figure 2 is a vertical section through the keep assembly of the lockset shown in an "on-guard" condition.
- Referring Figure 1 the illustrated lockset is in the form of a mortice latch having a
bolt 101 biased by aspring 102 to extend from alockcase 103 through its forend 103A. Thebolt 101 comprises aslidable plate 104 up on which is fixed the usualbevelled head 105, so that a door fitted with the latch can slam shut with the bolt head engaging in an associatedkeep assembly 106. For withdrawing the bolt to permit door-opening there is arotatable follower 107 within the lockcase which can be turned by handles (not shown) provided on each side of the door. This follower is biased to its rest position shown in the drawing by aspring 108 connected to it through a tie 109. A link bar 110 is pivoted to the bolt by a pin 111, and has a hookedtail portion 112 which in the condition shown in Figure 1 lies in the path of movement of an arm 113 extending from thefollower 107. Accordingly, turning thefollower 107 clockwise (in the sense of the drawing) by either of the external handles causes the arm 113 to pick up thetail 112 of the bar 110 and thereby withdraw the bolt from thekeep assembly 106 through the bar 110 and pin joint 111. Thus it will be seen that in the "off-guard" condition depicted in Figure 1 the lock functions as a normal doorlatch permitting passage through the doorway by any person operating thefollower 107. - In addition to these components within the
lockcase 103 there is alever 130 pivoted on apin 131. In the illustrated "off-guard" condition of the lock onearm 132 of this lever lies directly beneath the link bar 110 while itsother arm 133 lies in anaperture 134 in the forend 103A and thus faces thekeep assembly 106 when the door is closed. - The keep
assembly 106 of this lockset houses a double-acting solenoid unit 114 (Figure 2). This solenoid unit is used to drive, through a bell-crank 135 pivoted at 136, a horizontally-reciprocable plunger 115, shown in its retracted (leftward) position in Figure 1 and in its extended (rightward) position in Figure 2. The solenoid unit in this example is equipped with a pair of solenoids acting in opposite directions upon acore 114A connected to the bell-crank 135 and arranged to retain theplunger 115 in whichever of its two positions it has been set until the next actuation of the appropriate solenoid's field coil(s). In the retracted position of the plunger, as shown in Figure 1, it has no effect upon any other part of the lock mechanism, so that the mechanism remains free for operation as a simple latch as described above. If, however, with the door closed and thebolt head 105 accordingly received in the keep assembly thesolenoid unit 114 is actuated to drive theplunger 115 to its extended (rightward) position, the end of the plunger is caused to enter through theaperture 134 in the lock forend and pivot thelever 130 about the pin 131 - anti-clockwise in the sense of the drawing - by abutment with thearm 133. This causes theother arm 132 of the lever to engage the link bar 110 and pivot the latter in the same sense about its own pin 111. In so doing, an upstanding nose formation 119 on the top of the bar 110 is placed adjacent to afixed post 120 in the lockcase so that thepost 120, lying in the path of the formation 119 in the sense of retracting movement of thebolt 101, will act to deadlock the bolt against forced retraction. In addition, theend 112 of the bar will be lifted clear of the path of the follower arm 113, so if the follower is turned by a person operating either door handle no load can be transmitted to the bolt. If, however, an attempt is made by some other means to put force on thebolt 101 in its retracting direction, this will be securely resisted by the nose 119 of bar 110 engaging thepost 120 as stated above. - In practice, the illustrated lockset forms part of an electronic access-control system for the door to which it is fitted intended to operate at different levels of security at different times. That is to say during "off-guard" periods access is permitted through the doorway to all persons encountering the door. During "on-guard" periods, however, access is to be restricted only to duly authorised personnel. The "off-guard" and "on-guard" periods may be preprogrammed (for example to accord with the normal opening times of a suite of offices) and/or selectable at will at a central control station, in accordance with the parameters of the particular system installed, the details of which do not form part of the present invention. Suffice it to say, when the lock is to be "off-guard" the
solenoid unit 114 is pulsed to retract theplunger 115 to its Figure 1 position and the mechanism then operates in its above-described latch mode. When it is required to be "on-guard" the opposite-acting solenoid in theunit 114 is pulsed to extend theplunger 115 into engagement with thelever 130 and thereby deadlock/ disengage the mechanism also as described above. - In this condition access can only be obtained through the door on receipt of a signal to retract the
plunger 115 once more. This may be derived for example from an associated infra-red or magnetic card reader on the outside of the doorway, or from any other suitable code-input device known to those skilled in the art, it being understood that the code to enable retraction of theplunger 115 in this mode will be issued only to those persons authorised to gain access during this period. Retracting theplunger 115 back into the keep assembly of course releases the bar 110 from thepost 120 and reestablishes the operative connection between the bolt and the door handles. After any authorised door-opening during an "on-guard" period thesolenoid unit 114 is automatically pulsed again on closure of the door to return theplunger 115 into engagement with thelever 130. For this and for other monitoring purposes micro-switches (not shown) may be fitted in thekeep assembly 106 to detect the presence or absence of the bolt head within the keep and to detect in which of its two positions theplunger 115 lies at any time. The position of the bolt may alternatively be sensed by means of amagnet 137 within the bolt head operating a reed contact in the keep assembly. - For emergency opening of the door in the event of an electrical power failure occurring with the
plunger 115 deadlocking the mechanism, a lever or other suitable manually-operable device (not shown), accessible only from the inside of the doorway, may be provided on the keep assembly to retract the plunger. Figure 2 also illustrates an option for bypassing the electrical operation of the lock from the outside by means of a key-operatedlocking cylinder 138 mounted in the keep assembly whosethrower 139 can operate theplunger 115 through anarm 140 attached to the lower end of thesolenoid core 114A. - In a variant of the illustrated lock, instead of employing a
separate lever 130 for operation of the link bar 110, these elements could be effectively combined in one piece with the bar 110 therefore having a portion extending down into theaperture 134 for direct engagement by theplunger 115.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87202207T ATE56071T1 (en) | 1986-11-19 | 1987-11-12 | TYPED LOCKS. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8627637 | 1986-11-19 | ||
GB868627637A GB8627637D0 (en) | 1986-11-19 | 1986-11-19 | Locks |
GB878712728A GB8712728D0 (en) | 1987-05-30 | 1987-05-30 | Locks |
GB8712728 | 1987-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0268335A1 true EP0268335A1 (en) | 1988-05-25 |
EP0268335B1 EP0268335B1 (en) | 1990-08-29 |
Family
ID=26291551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870202207 Expired EP0268335B1 (en) | 1986-11-19 | 1987-11-12 | Locksets |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0268335B1 (en) |
DE (1) | DE3764610D1 (en) |
GB (1) | GB2197681B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4441834A1 (en) * | 1994-11-24 | 1996-05-30 | Schliess Und Sicherungssysteme | Lock for railway carriage lavatory door |
GB2325020A (en) * | 1997-05-05 | 1998-11-11 | Adams Rite Mfg | Door latch actuators with lost motion |
ES2138523A1 (en) * | 1997-02-27 | 2000-01-01 | Talleres Escoriaza Sa | Security lock with access control |
WO2006110958A1 (en) * | 2005-04-21 | 2006-10-26 | Assa Abloy Australia Pty Limited | Electric lock system |
AU2006238335B2 (en) * | 2005-04-21 | 2010-11-11 | Assa Abloy Australia Pty Limited | Electric lock system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2206638B (en) * | 1987-05-22 | 1991-03-20 | Pickersgill Kaye Ltd | Electromechanical lock |
GB8829961D0 (en) * | 1988-12-22 | 1989-02-15 | Electronic Surveillance Produc | Lock mechanisms |
GB9013495D0 (en) * | 1990-06-16 | 1990-08-08 | P E D Limited | Solenoid latching system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2652562A1 (en) * | 1975-11-21 | 1977-06-02 | Access Control Syst | LOCKING DEVICE |
DE2643231A1 (en) * | 1976-09-25 | 1978-04-06 | Messerschmitt Boelkow Blohm | Door lock for vehicle lavatory cabin - has solenoid operator which may be overcome by manual pressure operating rack and pinion |
DE3205224A1 (en) * | 1982-02-13 | 1983-08-25 | Jan 8303 Emmeloord Trapman | Magnetic door lock |
GB2161856A (en) * | 1984-07-18 | 1986-01-22 | Chubb Lips Nederland Bv | Locks |
-
1987
- 1987-11-12 DE DE8787202207T patent/DE3764610D1/en not_active Expired - Fee Related
- 1987-11-12 EP EP19870202207 patent/EP0268335B1/en not_active Expired
- 1987-11-12 GB GB8726530A patent/GB2197681B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2652562A1 (en) * | 1975-11-21 | 1977-06-02 | Access Control Syst | LOCKING DEVICE |
DE2643231A1 (en) * | 1976-09-25 | 1978-04-06 | Messerschmitt Boelkow Blohm | Door lock for vehicle lavatory cabin - has solenoid operator which may be overcome by manual pressure operating rack and pinion |
DE3205224A1 (en) * | 1982-02-13 | 1983-08-25 | Jan 8303 Emmeloord Trapman | Magnetic door lock |
GB2161856A (en) * | 1984-07-18 | 1986-01-22 | Chubb Lips Nederland Bv | Locks |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4441834A1 (en) * | 1994-11-24 | 1996-05-30 | Schliess Und Sicherungssysteme | Lock for railway carriage lavatory door |
ES2138523A1 (en) * | 1997-02-27 | 2000-01-01 | Talleres Escoriaza Sa | Security lock with access control |
GB2325020A (en) * | 1997-05-05 | 1998-11-11 | Adams Rite Mfg | Door latch actuators with lost motion |
WO2006110958A1 (en) * | 2005-04-21 | 2006-10-26 | Assa Abloy Australia Pty Limited | Electric lock system |
AU2006238335B2 (en) * | 2005-04-21 | 2010-11-11 | Assa Abloy Australia Pty Limited | Electric lock system |
CN101189402B (en) * | 2005-04-21 | 2012-10-03 | 亚萨合莱澳洲有限公司 | Electric lock system |
Also Published As
Publication number | Publication date |
---|---|
GB8726530D0 (en) | 1987-12-16 |
DE3764610D1 (en) | 1990-10-04 |
EP0268335B1 (en) | 1990-08-29 |
GB2197681A (en) | 1988-05-25 |
GB2197681B (en) | 1990-05-16 |
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