FR2652118A1 - COMBINED EXIT OUTPUT AND LOCK OUTPUT ASSEMBLY. - Google Patents

Abstract

The invention relates to locking devices for emergency exits. According to the invention, a combined emergency and exterior access lock assembly for a door 13 of a security zone comprises an emergency exit device with door locking 10 and an exterior access lock 41. They are coupled. so that the action on an emergency exit bar 11 located in the safety zone simultaneously enters both the bolt means 26, 16t, 16b of the emergency exit device and the bolt means 41b, 42a of the exterior access lock, while the withdrawal of the bolt means of the lock from the exterior of the door requires an unlocking operation independent of both the emergency exit device and the exterior access lock.

Description

The present invention relates generally to devices for

  locking of the type for emergency exits for mounting on doors or the like, and more particularly, a new latching system for emergency doors with hidden rods comprising a sliding bar actuator for a three-point locking system and a combination lock of

  high security coupled with the camera.

  A number of exit locking equipment or emergency exits have been developed to provide for the evacuation of classrooms, auditoriums, theaters and others, in which an elongated pusher plate serving as an emergency bar is supported. a rectilinear sliding movement which brings it closer to or away from the adjacent surface of the door to actuate a main bolt, or a pair of high and low secondary locking bolts or rods, or both vertical edge bolts and up and down. Such emergency exit devices are constructed to automatically unlock and a relatively small amplitude movement on the emergency bar from inside the building to facilitate the maneuvering of the emergency bar and the unlocking of the door by applying a pressure to the surface of the door on which the emergency exit device is mounted. Typically, such emergency exit devices comprise a primary bolt mounted in the free vertical edge of the door near the level of the emergency exit device and secondary bolts at the top and bottom of the door, all maneuvered by the bar. rescue. Usually, a main central box comprises lever mechanisms interconnecting a control lever mounted in reciprocating rectilinear motion operated by an emergency bar to manipulate the up and down locking bolts by means of

2 2652118

  control rods connected from the bent levers to said locking bolt while the primary bolt or central bolt is directly operated by the control rod. Examples of such backup devices are found in prior documents such as U.S. Patents 3,563,585, U.S. 3,582,122, U.S.

  U.S.-3,788,687, U.S.-3,767,238, U.S.-1,427,223, U.S.-4,601,499.

  and U.S. 4,741,563 which are typical examples of this type

emergency exit device.

  The prior constructions of the emergency exit device usually used a rigid connection between the main control zipper and the secondary pushers of the central housing mechanism actuating the up and down locking bolts. So when the secondary pushers were supported, the main control zipper was back which was moving back the bolts of the emergency exit device. In a two or three-point locking system, the locking of any one of the locks in the system made it possible to

to enter without authorization.

  Emergency exit systems have also frequently been used in security zones, where the emergency exit device equipped with its release sliding bar mechanism allows entry, while a remote access control system, such as a card-driven or push-button access system or a keyed cylinder lock enabled to maneuver the emergency exit device from

  the outside to retract the locking bolts.

  The device of the present invention has been developed to meet both the need for an emergency exit device that operates in conjunction with a high security lock, such as a high security combination lock.

3 2652118

  From the outside of the door closed by the emergency exit locking system, it is necessary to operate both the high security lock and the emergency device independently of one another. To exit the inside of the door, pressing the block or emergency bar must enter both the bolts of the emergency exit device and the bolt of the high security lock. This allows the device to meet both the requirements of the back-up system and the high security system. There are many applications in which there are both high requirements

  safety and emergency exit or emergency exit.

  Currently the way to meet these needs is to install two doors in the same room. The former is used to meet the emergency exit requirements, the door being equipped with an emergency exit device mounted inside without any means of entering from the outside. The door is always locked for the outside. The other door is equipped with a high security lock and serves as a means of passage from the outside of the door to the inside. The present invention is designed to avoid having to install two doors when both high security and emergency exit requirements have to be met, and allows the operation of the emergency exit locking mechanism to retract the primary bolt. in response to an external operation by means of a key or by means of a remote access control system without retracting the bolt of the high security lock, and which allows the primary bolt of the exit device Do not back off when the high security lock is unlocked. In other words, the emergency exit device and the high security lock must be unlocked independently of each other to penetrate from the outside. But, by pressing the block or the

4 2652118

  emergency bar of the device one unlocks both the security lock and the safety bolts of the device

  emergency to allow the exit.

  It is therefore an object of the present invention to provide a novel high security exit locking system comprising a mechanically actuated emergency exit lock device and a high security combination lock interlocked therebetween, wherein the unlocking and the withdrawal of the bolt from the emergency exit device and the unlocking of the high security combination lock are performed independently without the withdrawal of the primary bolt or the bolt of the combination lock causing the withdrawal of the other, so that the emergency exit device and the high security lock must be unlocked independently to access from

outside the building.

  Another object of the present invention is to provide a high security output device as described in the preceding paragraph, wherein a free movement is created between the main control pull of the emergency exit device and the latch removal mechanism. of the combination lock so that the opening of the combination lock does not transfer the opening movement to the main control pull of the emergency exit device and that the opening movement of the main control emergency exit device does not apply an opening movement to the withdrawal components of the

bolt of the combination lock.

  Another object of the present invention is to provide a novel high security back-up device of the type described below wherein a two or three-point locking system having two or three bolts respectively is installed in the device.

2652118

  emergency exit and the bolt of the combination lock is sufficiently independent of the mechanism of withdrawal of the bolts of the emergency device so that the locking of a bolt of the emergency exit device and the bolt of the combination lock must be obtained simultaneously

to enter without authorization.

  The invention thus proposes a combination of emergency exit and external access lock for a door of a safety zone comprising a door-locked emergency exit device and an external access lock coupled so that the action on an emergency exit bar located in the safety zone simultaneously enters both the bolt means of the emergency exit device and the bolt means of the external access lock to allow the evacuation of the safety zone by an associated door while the withdrawal of the bolt means and the bolt means of the lock from the outside of the door requires an independent unlocking operation of both the emergency exit device and the lock. external access, the withdrawal of one or the other of the bolt means of the outer device or the bolt means of the lock from the outside being ineffective to return the other bolt means ; comprising an emergency exit device housing to be secured to a door against the interior surface of the door, an elongate push plate constituting said movable emergency bar outward and inward relative to the door surface a primary bolt expandable from said output device, an actuator means of the bolt comprising a main control tab and a primary bolt pusher operatively coupled therewith to retract and release the primary bolt and a movable rod member to retract the primary bolt , secondary pusher means comprising a secondary pusher element, at least one

6 2652118

  pivoted elbow member having an arm pivotally connected to said secondary pusher member for moving the latter to the retracted position in a coordinated manner with the primary bolt; an external access lock comprising means for retrieving and releasing a secondary bolt and a primary lock bolt when the external access lock has been conveniently controlled to be unlocked, a turning element for retracting the primary bolt and connecting means connecting said rotary member with said secondary pusher for actuating the associated crank lever and retracting the secondary bolt; and an elongated mating pull-tab substantially parallel to the inner surface of the door and mounted very close to this surface having a first mating end between said mating pull-tab and said stem member and a second mating end between said mating pull tab and said bent lever, said mating pull tab and associated couplings of the first and second ends constituting a free moving coupling including means for transferring a withdrawal movement to said secondary pusher from the rod member without relative free movement to obtain a simultaneous withdrawal movement of the primary bolt and the primary bolt of the lock and to create a free relative movement of the secondary pusher relative to the rod member at the time of withdrawal of the secondary pusher and the associated primary bolt so that the unlocking of the external access lock retract said primary bolt from the lock and the secondary pusher to which it is connected via said

  rotating element without retracting said primary bolt.

  According to other features: said secondary pusher means comprise a second secondary pusher element for exiting and retracting a secondary bolt

7 2652118

  vertical and a bent lever connected to the second secondary pusher element and pivotally driven by said main control zipper in order to obtain the withdrawal of the secondary bolt at the same time as that of said primary bolt in response to an inward movement of the bar sliding. Said free-displacement coupling comprises an axis fixed on the bent lever and a recess receiving the pin at one of the end couplings of said coupling puller, the pin being housed in the recess adjacent to one end of said pull tab. axle moves in the recess in a first direction without transferring movement to the mating puller during the withdrawal movement of the secondary pusher member while the retracting movement of the stem member and the The main control lever is transferred to this secondary pusher element via a coupling of a first end of the withdrawal with the axis during the movement of the coupling pull tab in a second, opposite direction. Said one-axis free-displacement coupling secured to said first bent lever and an axle-receiving recess on one of said mating pull-end end couplings, the pin being housed in the adjacent one-end recess; of this puller so that the axis moves in the recess without transferring movement to the coupling puller during the withdrawal movement of the first mentioned secondary pushing member while the pulling movement of the stem member and the main control zipper is transferred to this secondary pusher element by coupling one end of the shrinkage with the axis during the movement of the

  mating zipper in a second, opposite direction.

  Said axle withdrawing withdrawal at one end of said coupling puller is defined by a T-shaped head having a transverse portion which extends

8 2652118

  perpendicularly to the coupling puller and a rod extending along its length along which said axis moves between a first limit position abutting an edge of said cross member and a second limit position spaced from the first corresponding to the occupied position

  by the axis when the primary bolt is fully retracted.

  Said combination of emergency exit and external access lock, wherein said emergency exit device comprises a central housing subassembly having a mounting base which has a portion spaced outwardly with respect to said surface inner door assembly constituting a mounting plate and a peripheral flange back on said surface, said bent levers being housed in an adjacent plane and externally covered said mounting plate, said mating pull tab being disposed in a plane adjacent to the most behind said peripheral edge, and said free-moving coupling comprising a means integral with said first angled lever placed opposite and movable with respect to said coupling puller to create a free-motion tap and a corresponding movement. The combined emergency exit and external access lock assembly, wherein said emergency exit device comprises a central housing subassembly having a mounting plate which includes a portion spaced outwardly with respect to said surface inner door assembly constituting a mounting plate and a peripheral edge returning to said surface, said bent lever being located in an adjacent plane and externally covering said mounting plate, said mating pull tab being placed in a plane adjacent to the most behind said peripheral flange, and said free-displacement coupling having a shaft integral with said bent lever at an immediately adjacent position and along said coupling tie in

9 2652118

  to the ridge portions of the second end thereof to create a free-moving grip and a

  corresponding movement of the axis and the cranked lever.

  The combined emergency exit and external access lock subsystem includes a mechanism for applying a withdrawal force to said master pull tab from the outside access control means located outside the door having for object of manipulating said main control zipper in order to retract said primary bolt without transferring the withdrawal movement to said secondary pusher. Said external access lock in a combination of emergency exit and external access lock in which the external access lock is a combination lock comprising a means actuated by a combination lock disc for entering and exiting said secondary bolt. Said combination according to the invention comprises an external access control means located outside the door having the function of manually introducing a selected code applied to it to form an electrical withdrawal signal, and a means for solenoid coupled to said main control zipper and energized by said withdrawal signal to operate said master control zipper and retract the primary bolt without transferring the withdrawal movement to

secondary pusher.

  Other objects advantages and possibilities of the

  present invention will appear from the description

  The following detailed description, taken in conjunction with the accompanying drawings, showing a preferred embodiment of the invention and in which: FIG. 1 is a perspective view of a prior art three-point emergency exit locking device;

2652118

  Fig. 2 is a plan view, some parts of which have been removed and some parts shown in broken lines, of the central housing mechanism of a prior art three-point emergency exit locking device; Figure 3 is a side elevational view of this device with bent levers and pushers secondary bolts not shown, seen from below the Figure 2; FIG. 4 is an exploded partial perspective view of an emergency exit device coupled to a high security combination lock mechanism and an associated deadbolt section according to the present invention showing the connecting components between each other and their associated deadbolt section. covers; Figure 5 is a rear elevational view of the deadbolt section and a bolt of the modified combination lock used in the emergency exit device; FIG. 6 is a plan view of the interior components of the bolt and combination lock control mechanism and the components of the deadbolt section, constructed in accordance with the present invention to make the external control mechanism of the exit device of FIG. relief and mechanisms of the outer combination lock functionally independent of each other; Fig. 7 is a sectional view of the mechanism of Fig. 6 along the line 7-7 of Fig. 6 with some parts removed for clarity; Fig. 8 is a plan view, on which parts have been removed, of the free-motion linkage employed in the mechanism of the present invention; FIG. 9 is a partial perspective view of the freely moving link, with the adjacent structure

represented in broken line.

  Reference is made to the drawings in which identical references designate the same parts in several figures, and in particular in FIGS. 1 to 3, showing a typical emergency exit device as it is currently marketed, such devices typically being made of a central housing subassembly generally designated at 10, usually mounted at mid-height or substantially normal level of a door knob on the interior face of a door, which includes an elongated sliding push bar 11 slidably supported to inwardly and outwardly relative to a housing 12 of the mechanism mounted on a door 13 so as to be generally oriented across the door. The subassembly 10 of the central housing houses a mechanism 14 actuator of the mobile bolt which is operated by the movement of the sliding bar 11 inside the housing of the mechanism 12 towards the inner surface 13i of the door. The subassembly 10 of the central housing is often in the form of what is called a subassembly of "universal" central housing, that is to say that it consists of parts for assembling either a central housing assembly of the "surface-mounted" type comprising a primary bolt 15 which can protrude horizontally beyond the free vertical edge 13f of the door 13 to penetrate a strike, or to constitute a vertical set of secondary bolts comprising two bolts secondary members 16b and 16t respectively at the bottom and at the top of the door being able to protrude into and into fixed strikers of the door lintel or threshold or floor, or for use in a combined arrangement of horizontal and vertical bolts, constituting what the we

12 2652118

  calls a "three-point" locking system as

illustrated in Figure 1.

  In such a type of emergency exit device, one end of the mechanism housing 12, which may be made of aluminum or other extruded metal, is closed by an end cap 12c attached to the mechanism housing by a hood bracket 12d. end. The other end of the mechanism housing is fixed to a support plate of the locking mechanism 18 covered with a removable cover 19 fixed to the plate 18 by fixing screws. A facing plate 20, typically supporting a handle 20h, is aligned with the support plate and the two plates 18 and 20 are mounted at a distance from each other on the door or on the closure of the same type, means of spacers and coupled screws or bolts

  to the support plate 18 of the central housing.

  The portion of the central housing 10 of this assembly constitutes a control pull box in which is mounted an elongated main control zipper 22 slidably supported in the housing 12 and having at one end a portion 23 in the form of a hatch which is assembled, for example, by means of a transverse axis 24 to a bolt puller 25 which controls the movement of projection and withdrawal of a pivoted primary bolt 26. The manner in which the main control rod 22 is driven to translate slidably in the housing 12 is well known to specialists of emergency exit mechanisms, an example of such a mechanism being presented in the patent

  Prior US U.S. 4,741,563.

  In the illustrated mechanism, a control rod member 27 is mounted by an axle at one end of the main control zipper 22, as indicated at 28, at the opposite end of the axis 24 which passes through the pull tab 25. bolt. The linkage system, according to the

13 2652118

  Practices well known in the prior art, is operated by a pull translation mechanism of the emergency exit device so as to communicate a translational movement to the chappe 23 and the axis 24 in the longitudinal direction in order to return and projecting the primary bolt 26. Such mechanisms are known from, for example, United States Patents US-4,167,280 and US-3,767,238. The opposite end of the control rod 27 is coupled by an axle and slot assembly generally designated 29 to maneuver a rod 30 which is retracted in the axial direction by a lever mechanism when the sliding bar is depressed. 11. An additional operating rod (not shown) can be connected to the main control zipper 22 and actuated by a known remote access electrical access control, such as for example a digital push button electronic lock control system. triggered when a selected code is introduced, such as the device manufactured by Sargent & Greenleaf, Inc., under the registered trademark

  CODETRONIC, and described in US Pat.

  3.953.769, or any other card access control system capable of applying a trigger signal to a solenoid 30a having a frame 30b coupled to the additional drive shaft. The operating rod 30 and the control rod and the bolt 26 are returned to the protruding position by the usual system of return spring incorporated in such devices.

Emergency exit.

  Also, the support plate 18 pivotally supports two bent levers 31, for example by means of pivot pins 32 fixed to the support plate 18. Each bent lever 31 comprises at a first end 31a a formation such as a sphere 32s which is received between two shoulders 33 of the main control zipper 22 so that

14 2652118

  to communicate the appropriate rotational movement to the crank levers 31, while the other end 31b of each crank lever is pivotally coupled by axle and slotted formations 34a to slide block members 34 constituting secondary bolt lifters; for the lock set. These sliding block formations or push members 34 of the secondary bolts generally have the shape of a rectangular groove seen in FIG. 2 by forming rectangular block structures having parallel side surfaces 34b which slide between guide surfaces 35 projecting from each other. relative to the plate 18. These formations of sliding blocks or pushing elements 34 of the secondary bolts are each coupled to rods 36t and 36b of the pushers of the upper and lower bolts to obtain the removal of the upper and lower bolts

16t and 16b pivoted.

  The usual method of the prior art for incorporating a combination lock with such an emergency exit device was to connect a bracket like that shown at 38 in FIG. 4 at its lower end with the pusher member 34 of the upper bolt. secondary, for example by means of a threaded bolt and stud brackets fasteners 38a, while the uppermost end of the bracket 38 is connected to the button or control disk 39 exceeding a sub -assembly 40 deadbolt associated with the mechanism of the combination lock 41. The mechanism of the combination lock 41 may, for example, be of the type described in the prior patent US-A 4,163,376 of August 7, 1979 and the deadbolt assembly 40 may be, for example, a Sargent & Greenleaf deadbolt subassembly as sold until now by Sargent & Greenleaf so as to be incorporated in the 8470 model of the deadbolt. combination with deadbolt. Such typical mechanisms

2652118

  combination locks comprise a lock casing or case 41a to be mounted on the inner surface of the door or closure, together with a tube 41b receiving an axis pointing forwards through the door and through a ring 41c dial to be mounted on the outer surface of the door to form a bearing for the dial element and button 41d. A protruding solid plate 41e may be mounted in overlaying relation in the forward direction with the mechanism of the lock housing to serve as an anti-drill device to the lock mechanism housing. A conventional strike 41f and an adjusting wedge 41g are also shown in an exploded view, that is to say remote from their normal mounting position on the frame associated with the door facing the bolt and the subassembly 40 of the bolt sleeping. An appropriate cover 38c for the bracket 38 is also shown in FIG. 4 and held by fixing screws on the bracket in

the installation completed.

  The association of the lock bolt, represented in 41h of the combination lock which is returned and exited in the usual manner, for example, as described in the prior patent US-A 4,163,376, comprises the usual hook lever 41i having a nose and hook formation as described in the prior patent cooperating with the locking knobs of the combination lock. However, the bolt has the configuration shown in Figure 5 which has a free-moving connection with the bolt member 42a of the dead bolt subassembly 40. This is achieved, for example, by the fact that the rear portion 42b has substantially the shape of a large T which extends towards the bolt 41h of the combination lock 41, bearing flange or flange formations 42c protruding in opposite directions slidingly engaged with opposite parallel side walls 41j of the recessed recess or C-shaped 41k which make them

16 2652118

  face in the bolt 41h of the combination lock. This arrangement forces the T-shaped end portion or the rear portion 42b of the bolt member of the deadbolt section to be retained in the recess 41k of the lock bolt 41h of the combination lock but allows a relative movement of sliding so that the bolt member 42a of the dead bolt can be returned to the unlocking position while the bolt 41h of the combination lock is still in the extended position or

lock position.

  The subassembly as shown in the figure comprises a spring-biased release lever 42d pivotally mounted on the bolt member 42a, as shown at 42e, and has a finger portion 42f terminating at an end. end which is inserted in the recess 42g of the element of the bolt 42a thus establishing a free-moving connection. The release lever 42d has a profiled recessed portion 42b which receives an eccentric axis projecting beyond the knob or control disk 39 so that after rotation of the knob or control disk 39 counterclockwise , the release lever 42d is moved along a limited axis by raising the formation

  shoulder 42i to an unobstructed position

  above the upper edge of the bolt 41h of the combination lock and bringing the projecting portion on the end of the finger portion 42f at the left end of the withdrawal 42g, when we look at Figure 5, after what a further rotation of the knob or control disk 39 in the counterclockwise direction has the effect of retracting the bolt 42a to the unlocking position. The subassembly 40 of the deadbolt is also equipped, as an additional safety feature of an automatic deadbolt release system, which includes an automatic bolt slide release.

17 2652118

  40t frame and associated spring loaded lever 40c, which allows the high security lock assembly to be placed in the locked position while the door is open and can provide effective locking when the door is closed . It should be understood that, given the connection between the bracket 38 coupled eccentrically with the button or control disk 39 and one of the pushers 34 of the secondary latches of the emergency device, pressing the bar 11 of the emergency exit device causes a withdrawal movement of the main control zipper 22 and the operating rod 30, which causes the rotation of the elbow levers 31 and the removal of the pushers 34 of the secondary bolts to the control pull 22, causing the removal of the primary bolt or central bolt 26 and that of the high and low secondary bolts 16t and 16b. The movement of the pusher 34 of the secondary bolt to which the control knob 39 of the bolt section of the combination lock is connected by the bracket 38 also performs a suitable rotation of the control knob 39 to rotate the release lever 42d counterclockwise and obtain the withdrawal of the bolt 42a. Likewise, the composition of the correct combination for the high security combination lock 41 and its associated deadbolt subassembly 40 and the rotation of the dial and the knob to obtain the withdrawal of the lock 41h from the combination lock cause also the withdrawal of the bolt 42a and this in turn causes the rotation of the control knob 39 connected by the bracket 38 to one of the pushers 34 of the secondary bolts, and because of the positive connections by means of the elbow levers 31 at the main control slider 22, the simultaneous withdrawal of

  all bolts 26, 16t and 16b are obtained.

18 2652118

  Due to the effective interconnection between the emergency exit device and the high security combination lock as described above, it would appear that the inhibition of one of the locks of the emergency exit device which are positively connected together between they will simultaneously cause the withdrawal of all the bolts of the emergency exit device and that of the bolt 42a of the subassembly 40 of the deadbolt of the combination lock high security. This is undesirable since the high security that is sought to be achieved with the high security combination lock controlling entry into the room or building from the outside could then be compromised simply by inhibiting the security. one of the bolts of the emergency exit device. What is desired in applications having both high security and emergency exit requirements is obtained because the mechanism is arranged such that the emergency exit device and the high combination lock security must be locked independently to gain access, so that when the bolt of the high-security lock is returned by introducing the correct combination in the combination lock, to obtain the withdrawal of the latch 41h of the combination lock, and its associated latch 42a, only the pushers 34 of the secondary bolts and their associated bolts 16t and 16b are returned, but this does not return the primary bolt or bolt central emergency exit device 26. The difficulty with arrangements of the prior art is that the inhibition of any one of the bolts in a locking system two or three points allowed a penetration without autor from the outside or the other side of the door as, as a result of the effective connection of the bolt of the combination lock assembly and the bolts of the emergency exit device, by

19 2652118

  example by forcing one of the bolts in withdrawal position simultaneously led to the withdrawal of the other bolts and

  including the bolt of the combination lock.

  The present invention is directed to a modification of the structure described above so as to use a single door for emergency exit requirements, in applications where both high security requirements and emergency exits are present. for example, to avoid the necessity of having to install two doors, one of which is equipped with an emergency exit device mounted inside without any means of penetration from the outside so as to always remain locked from the outside, or to allow entry by a digital access control or card control or other device of the same type and another door having a high security lock constituting a means for the passage from the outside to the inside. The structure of the modified emergency exit device of the present invention also provides better security against intruder entry or unauthorized entry from outside the building or room, since this modified system does not permit intrusion only if two of the locks are inhibited simultaneously, which makes it even more difficult to inhibit the system than in the arrangement of prior art two or three point locking systems for which

  the inhibition of only one of the latches allowed entry.

  The construction of the modified emergency exit device of the present invention comprises the addition of a free-moving link between the primary control rod of the emergency exit device and the push-buttons of the secondary latches, which allows the device to emergency exit and the combination lock of high security to operate independently. With this arrangement, when the lock with

2652118

  combination of high security is maneuvered to retract his bolt, the system of the primary bolt of the emergency exit device will not return. The emergency exit device, for example by correct operation of the digital or card access control or by a key lock and the high security combination lock, must be unlocked independently to gain access. Pressing on the push rod of the emergency exit device, both the high security bolt and the bolt system of the emergency exit device are engaged in

  allowing to leave the closed room.

  The free-motion coupling of the present invention comprises a free-moving release or free-moving coupling tab 45, which is movable longitudinally with respect to the base plate of the mechanism housing 12 and has an orifice 46 adjacent to its distal end 47 for receiving a control pin 51 protruding from the operating rod 30 and carries a T-shaped head 48 at its proximal end. The T-shaped head 48 comprises a slightly narrowed central portion 48a which is an extension of the remainder of the pull tab 45 and two arms 48b, 48c oriented in opposite directions protruding transversely of the pull tab 45 and forming shoulders 48d, 48e oriented towards each other. the rear adjacent the narrowed central portion 48a, as shown in Figures 8 and 9. One of the shoulders 48d or 48e is normally abutted against an axis 31a-1 facing inwardly of one of the elbow levers 31, locating the axis 31a-1 in an angle of the T-head at the junction of the central portion 48a and one of the arms 48b or 48c. The bent levers 31 are identical to those incorporated in the emergency exit device of the prior art, shown in FIGS. 2 and 3, and are pivotally mounted about the fixed pivot axes 32 and

21 2652118

  coupled by 3lb shafts with bolt pushers

secondary 34.

  As can be seen from FIG. 6, the control pin 51 fixed on and protruding from the operating rod 30 through the opening 46 of the pull tab 45 normally places the pull tab 45 in its extended position shown in FIGS. 6 and 7 and in which the axis 31a-1 bears in the angle of the T-head 48 defined by one of the shoulders, for example the shoulder 48d, and the adjacent edge 48f clear of the central portion 48a when the emergency exit device and the high security lock are closed or in the locked position. Pressing the sliding bar 11 of the emergency exit device presses the operating rod 30, which in turn pulls the main zipper 22 and the freely movable release or pull tab

  to the left when looking at Figures 6 and 7.

  Thus, the freely movable release trigger or pull rod 45 retracted when inwardly pressed on the sliding bar 11, retracts the primary bolt 26 and the pushers of the secondary bolts 34, since its shoulder 48d is against the axis 31a-1 which protrudes from one of the crank levers 31 and that the crank levers are in turn coupled to the pushers 34 of the secondary bolts. The other crank lever 31 is actuated by the main zipper 22 mounted in the same way as in the arrangement of the prior art

shown in Figure 2.

  The opening of the associated door from the outside requires the correct operation of the digital access control system or the card-based control system to apply a trigger signal to the solenoid 30a, or in some installations requires the unlocking of a cylinder lock by means of a suitable key, as well as the proper operation of the combination lock at

22 2652118

  high security. Releasing the combined lock 41 of high security, including its associated subassembly 40 deadbolt coupled to the pusher 31 of the secondary bolts associated with the elbow lever bearing the axis 31a-1, the trigger or the coupling lever 45 to free movement does not move, since the axis 31a simply moves backwards along the open adjacent edge 48f from the shoulder 48d, creating the free displacement such as the

  bolt 26 of the emergency exit device does not fall back.

  By rolling back the primary bolt 26 of the emergency exit device by vandal penetration techniques (for example, when the bolt 46 is forced by means of a tool by someone who seeks to break in or without authorization) , the pushers 34 of the secondary bolts remain fixed by preventing the combination lock of high security from disengaging. The free movement between the main control zipper 22 and the push bar 11 is already obtained by the control puller, thanks to the presence of the slots 22b in the pull tab 22, and therefore the control puller allows the primary bolt 26 and the main control zipper 22 to back without maneuvering the control rod 30. So the risk of illegal penetration or break-in tolerated by previous constructions using a massive zipper between the main control zipper and the secondary buttons is avoided, since the fact pressing the pushers of the secondary bolts does not cause the removal of the main control zipper coupled to the primary bolt 26 due to the free-movement coupling system constituted by the trigger or the coupling pull tab 45. This construction , as indicated previously, also avoids having to install two doors in applications that have at the same time these high security and emergency exit, since the backup device in connection with the lock to

23 2652118

  combination of high security on the same door meets all the requirements. Also, the new construction makes the conviction of the system much more difficult since two locks must be simultaneously condemned to be able to access.

24 2652118

Claims (12)

  A combination of emergency exit and external access lock for a door 13 of a safety zone comprising a door-locked emergency exit device 10 and an external access lock 41 coupled so that the action on an emergency exit bar 11 located in the security zone simultaneously enters both the bolt means 26, 16t, 16b of the emergency exit device and the bolt means 4lb, 42a of the access lock. outside to allow evacuation of the safety zone by an associated door while the withdrawal of the bolt means and the bolt means of the lock from outside the door requires an unlocking operation independent of both the device of emergency exit and the external access lock, the withdrawal of one or other of the bolt means of the external device or the bolt means of the lock from the outside being ineffective to enter the other means bolt; comprising an emergency exit device housing to be fixed on a door against the interior surface of the door, an elongated push plate 11 constituting said mobile emergency bar outwardly and inwardly relative to the door surface a primary bolt 26 expandable from said output device, an actuator means of the bolt comprising a main control zipper 22 and a primary bolt plunger 23 operably coupled therewith to retract and retract the primary bolt and a movable rod member 30 to retract the primary bolt, secondary pusher means comprising a secondary pusher element 34, at least one pivoted elbow element 31 having an arm pivotally connected to said secondary pusher element for 2652118   move the latter to the retracted position in a coordinated manner with the primary bolt; an external access lock 40, 41 having a means for retracting and releasing a secondary bolt 41h and a primary lock bolt 42a when the external access lock has been conveniently controlled to be unlocked, a rotating member 39 for retracting the primary bolt 42a and connecting means 38 connecting said rotary member with said secondary pusher to actuate the associated crank lever and retract the secondary bolt; and an elongated mating pull tab 45 substantially parallel to the inner surface of the door and mounted very close to this surface having a first mating end 51, 46 between said mating pull tab and said stem member 30 and a second end coupling between said coupling tab 45 and said elbow lever 31, said coupling tab and associated couplings of the first and second ends constituting a free-motion coupling comprising means 48d for transferring a withdrawal movement to said coupling secondary pusher from the rod member without relative free movement to obtain a simultaneous withdrawal movement of the primary bolt and the primary bolt of the lock and to create a free relative movement of the secondary pusher relative to the rod member to moment of withdrawal of the secondary pusher and the associated primary bolt so that the unlocking of the lock ure external access to enter said primary bolt of the lock and the secondary pusher to which it is connected via said rotating element without doing return said primary bolt.   A combined emergency exit and external access lock assembly according to claim 1, wherein said secondary pusher means comprises a 2652118   second secondary pusher element 34 for exiting and retracting a vertical secondary bolt 16b and an elbow lever 31 connected to the second secondary pusher element and pivotally driven by said main control zipper in order to obtain the withdrawal of the secondary bolt at the same time as that of said primary bolt in response to a movement   towards the inside of the sliding bar.   A combination emergency exit and external access assembly according to claim 1, wherein said free displacement coupling comprises an axis 31a-1 attached to the elbow lever and a recess 48f receiving the axis at one of the couplings of FIG. end 45 of said coupling tab, the pin being housed in the recess adjacent one end of this pull tab so that the axis moves in the recess in a first direction without transferring movement to the coupling tab during the retraction movement of the secondary pusher member while the retracting movement of the rod member and the main control zipper is transferred to this secondary pusher member via a coupling of a first end of the withdrawal with the axis during the movement of the zipper   in a second opposite direction.   A combined emergency exit and external access lock assembly according to claim 2, wherein said free displacement coupling comprises an axle 31a-1 attached to said first bell crank and an axle receiving depression 48f. one of the end couplings of said coupling puller, the pin being housed in the recess adjacent to one end of this pull-tab so that the axle moves in the recess without transferring movement to the coupling pull-tab during the withdrawal movement of the secondary pusher element mentioned first while the withdrawal movement of the rod member and the zipper 27 2652118   control unit is transferred to this secondary pusher element by coupling one end of the recess with the shaft during the movement of the coupling zipper   in a second, opposite direction.   5. A combination of emergency exit and lock   outdoor access according to any one of the claims   3 and 4, wherein said axle withdrawing recess at one end of said coupling tab is defined by a T-shaped head 48 having a transverse portion extending perpendicularly to the coupling tab and a shank extending along its length 48f along which said axis moves between a first limit position abutting an edge of said cross member and a second limit position spaced from the first corresponding to the position occupied by the axis when the primary bolt is completely returned.   6. Combined emergency exit and lock assembly   outdoor access according to any one of the claims   1 and 2 wherein the emergency exit device comprises a central housing subassembly 10 having a mounting base 18 which includes a portion spaced from said inside door surface outwardly forming a mounting plate and a peripheral return flange. at said surface, said bent lever 31 being located in an adjacent plane and externally covering said mounting plate, said mating pull tab 45 being disposed in a plane adjacent the rearmost portions of said peripheral edge and said free moving coupling comprising means (axle 31a-1) integral with said angled lever positioned opposite and movable with respect to said coupling tab to create a free-moving engagement and a corresponding movement.   The combination of emergency exit and outdoor access lock according to claim 2, wherein   said emergency exit device comprises a sub-device 28 2652118   a center housing assembly having a mounting base which has a portion spaced outwardly from said interior door surface constituting a mounting plate and a peripheral flange back on said surface, said bent levers being housed in an adjacent plane and externally cladding said mounting plate, said coupling tab being disposed in a plane adjacent the rearmost portions of said peripheral edge, and said free moving coupling comprising a means integral with said first angled lever facing and movable relative to said coupling puller to create a free-moving jack and a corresponding movement.   The combination of emergency exit and external access lock according to claim 1, wherein   said emergency exit device comprises a sub-device   a center housing assembly having a mounting plate which includes a portion spaced outwardly with respect to said door interior surface constituting a mounting plate and a peripheral edge returning to said surface, said bent lever being located in an adjacent plane and externally covering said mounting plate, said mating pull tab being located in a plane adjacent the rearmost portions of said peripheral flange, and said free moving coupling having an integral axis of said bent lever at an immediately adjacent position and along of said coupling puller opposite the edge portions of the second end thereof to create a free-moving grip and a corresponding movement of the axle and the lever bent.   The combined emergency exit and external access lock assembly of claim 2, wherein said emergency device comprises a central housing subassembly having a mounting base which includes a 29 2652118   an outwardly spaced portion of said door interior surface constituting a mounting plate and a peripheral flange back on said surface, said bent levers being disposed in a plane adjacent to and externally covering said mounting plate, said coupling pull tab , being placed in a plane adjacent the rearmost portions of said peripheral edge, and said free-moving coupling comprises a shaft integral with said first bent lever at an immediately adjacent position and along said mating pull-tab vis-à-vis edge portions of the second end thereof to create a free-motion tap and corresponding movement of the axle and the bent lever. The combination of an emergency exit device and an external access lock according to claim 1, comprising a mechanism for applying a withdrawal force to said main control puller from the external access control means. located on the outside of the door for the purpose of operating said main control zipper in order to retract said primary bolt without transferring the withdrawal movement to said secondary pusher.   11. A combination of emergency exit and   external access lock according to one of claims 1   at 11 in which the external access lock is a combination lock comprising a means actuated by a combination lock disc to retract and remove said secondary bolt.   12. Together in combination with an exit device and   a combination lock according to one of the claims   1 to 11 comprising an external access control means located outside the door having the function of manually introducing a selected code applied thereto to form an electrical withdrawal signal, and a 2652118   means to solenoid coupled to said main control zipper and energized by said withdrawal signal to operate said master control zipper and retract the primary latch without transferring the withdrawal movement to the secondary pusher.