ES2906146T3 - Passive leaf counterlock for a double leaf door - Google Patents

Abstract

Counter lock for a passive leaf of a double-leaf door, comprising an actuating cam (30) coupled to a spindle (10), an upper rule (12) configured to be coupled to an upper escutcheon (18) through which the passive leaf (3) is kept locked at an upper locking point (A) when the counter lock (5) is in a neutral position, and a lower rule (15) configured to be coupled to a lower escutcheon (19) through which the passive leaf (3) is kept locked at a lower locking point (B) when the counter lock (5) is in the neutral position, both rules (12, 15) being movable relative to each other, the actuating cam (30) being configured to move at least one of the rules (12, 15) when the spindle (10) is turned in an opening direction, causing the release of the upper and lower locking points (A, B) of the passive leaf (3), characterized in that it comprises locking means (60) configured to keep the movement of the rules (12,15) blocked in the neutral position of the counterlock (5), the locking means (60) comprising a rocker arm (20) coupled to at least one of the rules (12,15) to move said rules (12,15), the actuating cam (30) blocking in the neutral position of the counterlock (5) the rotation of the rocker arm (20) preventing it from moving the rules (12,15), the locking means (60) being unlocked when the handle (10) is turned in the opening direction, characterized in that the rocker arm (20) comprises a wedge-shaped projection (23) which, in the neutral position of the counterlock (5), abuts against a retention surface (36) of the actuating cam (30) keeping the cam locked drive (30) the rotation of the rocker arm (20) in said neutral position.

Description

DESCRIPTION

Passive leaf counterlock for a double leaf door

TECHNICAL SECTOR

The present invention relates to a counterlock for a passive leaf for a double leaf door.

PRIOR STATE OF THE ART

Emergency doors or fire doors are known that comprise a main leaf that in turn includes a lock and a secondary leaf that includes a counterlock. The counter lock collaborates with the lock to block the door. These doors are configured to withstand the efforts required under regulations, only allowing their opening when the user acts on the lock or counter-lock. When the lock is actuated, only the main leaf opens, while when the counterlock is actuated, both leaves open.

The secondary leaf is arranged locked at an upper and lower locking point by means of espagnolettes that are coupled to the counter-lock, in particular to respective rules housed in the counter-lock, and at whose ends there are bolts that are inserted into respective seats blocking the secondary leaf. When the counterlock is activated, said blocking points are eliminated, making it possible to open the door. The counter lock further includes a central locking point with the lock so that a lock latch is received in the counter lock when the door is closed.

EP1813742B1 describes a counterlock that comprises rules that move vertically and whose ends are coupled to the corresponding espagnolettes, and a locking mechanism that blocks the movement of the rule when this displacement has been caused exclusively through a manipulation force that affects outside the counter-lock box, in the respective espagnolette and that does not come from the follower in the opening direction. For this it includes a locking gear.

US1346670A describes an emergency door comprising a lock and a counterlock actuated by a panic bar. One end of the panic bar includes a member which extends into a recess in the counter lock housing and is adapted to be raised when the panic bar is depressed. The member actuates an element on which a rocker arm of the counter lock rests. The rocker arm is attached to the casing through a coupling. When the element moves vertically upwards, the rocker arm rotates clockwise and causes a drive cam to rotate counterclockwise, retracting the rulers. The locking points are automatically retracted when the door is opened, remaining retracted until the person in charge positions the door in the neutral position, the retraction means being configured to release the locking points under certain circumstances.

GB2286420A describes a counter lock comprising a panic latch mechanism comprising rules movable relative to each other and a transfer member coupled to both rules such that rotation of the transfer member leads to displacement of the rules. In a locked position, a pivotally mounted pawl engages a shoulder of the transfer member. During operation, when a handle is actuated from the outside, it displaces the pawl from its position and raises the lower rule. When the handle is released, the springs return the mechanism to the locked position.

EP2703583A2 describes a passive leaf locking device configured to be associated with an active leaf locking device that is mounted on an active leaf of a two leaf door. The passive wing locking device locking mechanism has a latch lifting device for returning a latch of the active wing locking device that fits into a predetermined space of the passive wing locking device. The latch lifting device has a latch actuating member with a latch actuating pressure piece which is spring loaded in the latch return direction.

EP27548000A2 describes a counterlock according to the preamble of claim 1. The counterlock comprises a cam coupled to a follower, an upper ruler and a lower ruler coupled to the corresponding rod to lock the passive leaf in the neutral position and locking means configured to keep the scroll of the rulers locked in the neutral position. The locking means comprise a rocker arm coupled to the upper ruler, the cam keeping the rocker arm locked in the neutral position, the locking means being unlocked when the follower is rotated in the opening direction. The locking means further comprise a locking chuck movable between a first position as the lower locking position and a second position as the upper release position. The lock chuck is mounted on the lock case and the lock cap in a slot in each case, moving under its own weight from the release position to the lock position, the bottom position of the slot constituting the lock position. lock and the top position the release position.

DISCLOSURE OF THE INVENTION

The object of the invention is to provide a passive leaf counterlock for a double leaf door, as defined in the claims.

The counterlock according to the invention comprises an actuation cam coupled to a follower, an upper rule configured to be coupled to an upper espagnolette through which the passive leaf remains locked in an upper locking point when the counterlock is in a position neutral, and a lower rule configured to be coupled to a lower espagnolette through which the passive leaf remains locked at a lower locking point when the counterlock is in the neutral position, both rules being movable relative to each other, the drive cam to move at least one of the rules when the follower is rotated in an opening direction causing the release of the upper and lower locking points of the passive leaf.

The counterlock comprises locking means configured to keep the movement of the rules locked in the neutral position of the counterlock, the locking means comprising a rocker arm coupled to at least one of the rules to move said rules, locking the actuation cam in the neutral position of the counter-lock the rotation of the rocker arm preventing it from moving the rules, the locking means being unlocked when the follower is rotated in the opening direction. The rocker arm comprises a wedge-shaped projection which, in the neutral position of the counter lock, abuts against a retaining surface of the drive cam, the drive cam preventing the rocker arm from rotating in said neutral position. The counterlock according to the invention allows the door to be kept closed, preventing the locking points from giving way to overexertion caused, for example, in the event of panic or fire situations that lead to overloads in the passive leaf itself. If you wanted to unlock the counterlock, it would suffice to act on the follower directly or on the handle in the opening direction, easily unlocking the three locking points.

On the other hand, even if an attempt were made to open the passive leaf by acting directly on one of the upper or lower locking points, it could not be opened since the locking means prevent the displacement of any of the rules from the neutral position.

These and other advantages and features of the invention will become apparent in view of the figures and the detailed description of the invention.

DESCRIPTION OF THE DRAWINGS

Figure 1 shows a schematic front view of a double leaf door comprising a counterlock according to the invention.

Figure 2 shows an exploded view of the elements included in the double leaf door shown in figure 1.

Figure 3 shows in detail the counter lock and a double leaf door lock both shown in Figure 1, arranged in a neutral position.

Figure 4 shows a front view of the counter lock shown in Figure 1 in the neutral position.

Figure 5 shows another front view of the counter lock shown in Figure 1.

Figure 6 shows a front view of the counterlock shown in Figure 1 in a first actuated follower position.

Figure 7 shows a front view of the counterlock shown in Figure 1 in a second actuated follower position.

Figure 8 shows a front view of the counter lock shown in Figure 1 in an open lock position.

Figure 9 shows another front view of the counterlock shown in Figure 1 in the open lock position.

Figure 10 shows a detailed view of the rocker included in the counterlock shown in figure 1. Figure 11 shows a detailed view of the actuating cam included in the counterlock shown in figure 1.

Figure 12 shows a detailed view of the handle included in the counterlock shown in Figure 1. Figure 13 shows a detailed view of the counterlock shown in Figure 1 actuated by the handle in an initial unlocking position.

Figure 14 shows a detailed view of the counterlock shown in Figure 1 operated by the handle in an intermediate unlocking position.

DETAILED DISCLOSURE OF THE INVENTION

Figure 1 shows an emergency door 1 comprising a lock 4. The emergency door 1 comprises a main leaf 2, also known as an active leaf, comprising the lock 4, and a secondary leaf 3, also known as a passive leaf, comprising a counter lock 5 according to the invention.

When the lock 4 is actuated, only the main leaf 2 opens, while when the counterlock 5 is actuated, both leaves 2 and 3 open. The counterlock 5, when arranged in a blocking position, keeps the secondary leaf 3 locked. at an upper locking point A, at a lower locking point B, and at a central point C as shown schematically in Figures 1 and 2. Said locking position is also called neutral position or closed door position.

The emergency door 1 comprises an upper espagnolette 18 fixed at one end to the counterlock 5 and at whose free end a bolt 13 is inserted and a lower espagnolette 19 fixed at one end to the counterlock 5 and at whose free end a bolt 13 is inserted. another bolt 14, so that each bolt 13 and 14 is configured to be housed in a corresponding housing 27 and 28 comprised respectively in the floor and in a frame of a wall in which the emergency door 1 is arranged, the bolts being retained 13 and 14 corresponding inside the respective housing 27 and 28 defining respectively the lower locking point B and the upper locking point A. The locking at the central point C occurs through a latch 8 of the lock 4 which, in the neutral position, it crosses a front 7 of the counterlock 5, partially housing itself in the counterlock 5. The bolts 13 and 14 have a substantially conical geometry. This geometry of the bolts, together with the configuration of the counterlock 5, prevents the bolts 13 and 14 from yielding to overexertion caused by panic or fire situations that result in overloads on the door 1, preventing said door from opening.

The counterlock 5 shown in the figures is mainly adapted to emergency doors as shown in figures 1 and 2, although it could be used in other types of doors.

Figures 3 to 9 and 13 to 14 show an embodiment of the counterlock 5 in which some of the components of said counterlock 5 not relevant to the invention have been eliminated to facilitate understanding of the invention. The counterlock 5 comprises a box 6 in which a follower 10 configured to be operated by a handle (not shown) or by an anti-panic or emergency device 9 shown in Figures 1 and 2, an upper rule 12 configured to be coupled to the upper bolt 18, a lower ruler 15 configured to be coupled to the lower bolt 19, and an actuation cam 30 coupled to the follower 10, both rulers 12 and 15 being movable relative to each other and the actuation cam 30 being configured to move at least one of the rulers 12 and 15 when it is actuated in an opening direction, thus releasing the upper A and lower B locking points of the secondary leaf 3.

The counterlock 5 also comprises a pusher 50 which, in the neutral position, is housed in the box 6 and is partially expelled from the box 6 attacking the latch 8 of the lock 4 and releasing the central blocking point C, when the follower 10 is rotated in the opening direction. Therefore, starting from the neutral position, the rotation of the actuating cam 30 in the opening direction causes the release of the upper A and lower B locking points of the counterlock 5 and of the central locking point C of the lock 4 by directly actuating said actuation cam 30 respectively one of the rulers 12 and 15 and the pusher 50.

The pusher 50 is pivotally coupled to the housing 6 through the corresponding coupling 51. In the neutral position, the pusher 50 rests on the drive cam 30, in particular on a support surface 35 arranged on a projection 34 of the drive cam 30. In the counterlock 5, the support between the pusher 50 and the drive cam 30 in the neutral position is arranged below the axis of rotation of the coupling 51, thus forcing the pusher 50 to remain supported on the cam drive 30 by effect of gravity.

On the other hand, the counterlock 5 comprises locking means 60 configured to keep the displacement of the rules 12 and 15 locked in the neutral position of the counterlock 5, the locking means 60 comprising a rocker arm 20 and a retaining surface 36 of the drive cam 30 that retains the rocker arm 20 in the neutral position, preventing the displacement of the rulers 12 and 15, the locking means 60 being unlocked when the follower 10 is rotated in the opening direction. As described above, in the neutral position, the passive leaf 3 is locked at the upper A, lower B and central C locking points. Starting from said neutral position in which the door is locked, and in the event of any pressure exerted on the door, said door can be opened quickly and at any time by turning the follower 10 in the opening direction.

Rocker arm 20 comprises a wedge-shaped projection 23 which, in the neutral position, abuts against retaining surface 36 of drive cam 30. Retaining surface 36 is a curved surface. In the embodiment shown in the figures, retaining surface 36 is a curved surface substantially concentric to an axis of rotation of drive cam 30.

The rocker arm 20 is pivotably coupled to the box 6 of the counter lock 5 through a first coupling 24, said rocker arm 20 also being coupled respectively to the lower rule 15 and to the upper rule 12 through a second coupling 21 and of a third coupling 22, said second coupling 21 and third coupling 22 being disposed at opposite ends of the rocker arm 20. The first coupling 24 is disposed substantially centered on the rocker arm 20.

On the other hand, the upper ruler 12 and the lower ruler 15 move relative to each other when driven by the drive cam 30, moving substantially vertically. When the follower 10 is turned in the opening direction, both rulers 12 and 15 approach each other, forcing the upper 18 and lower 19 espagnolettes to approach each other, releasing the corresponding bolts 13 and 14 from the corresponding seats 27 and 28, thus releasing the upper A and lower B locking positions, while when the follower 10 recovers its starting position due to the effect of a spring 55, the rulers 12 and 15 move away due to the effect of respective recovery springs 56 and 57 , returning the upper escutcheon 18 and the lower escutcheon 19 to the upper A and lower B locking positions. The displacement of the upper rule 12 and of the lower rule 15 is a guided displacement, said displacement being substantially vertical.

The drive cam 30 shown in detail in Figure 11, comprises a hole 33 through which it is concentrically and integrally coupled to the follower 10 and an arm 31 that includes a drive surface 32 configured to push and move the lower rule 15 when the follower 10 is rotated in the opening direction. In particular, the drive surface 32 acts on a stop 16 arranged on an upper end 15a of the lower rule 15. The support surface 35 of the drive cam 30, in addition to blocking the rotation of the pusher 50 in the neutral position, is configured to cause the pusher 50 to rotate in the opposite direction to the opening direction of the follower 10 when the follower 10 is actuated, causing the partial expulsion of said pusher 50 out of the box 6 and the corresponding release of the central blocking point C at attack the latch 8 of the lock 4 by retracting it.

When the follower 10 is turned by a handle or an anti-panic or emergency device 9 in the opening direction, the drive cam 30 rotates in the opening direction turning the pusher 50 in the opposite direction to the opening direction and releasing the central locking point C in a first stage, before it comes into contact with the lower rule 15. During the rotation of the drive cam 30 in the opening direction, from the neutral position (shown in figures 3 to 5) until the surface drive 32 of said drive cam 30 contacts the stop 16 arranged on the upper end 15a of the lower ruler 15 (shown in Figure 6), the retaining surface 36 of the drive cam 30 remains in contact with the end 23b of the projection 23 of the rocker arm 20. During said travel, the rocker arm 20 does not rotate. Starting from this position (see figures 7 to 9), when the drive cam 30 has rotated a certain angle in the opening direction from the neutral position, the drive cam 30 moves the lower rule 15, ceasing to be in contact the drive cam 30 with the rocker arm 20. When the lower ruler 15 moves vertically, the rocker arm 20 rotates in the opening direction, causing the displacement of the upper ruler 12 due to the couplings 21 and 22 of the rocker arm 20 with respect to the rulers. 12 and 15, causing the unlocking of the upper A and lower B locking points. By sequencing the release of the locking points, that is to say that the central locking point C is released first and then the release of the upper A and lower B locking points, a counterlock 5 is achieved which, complying with the security requirements demanded of this type of lock, minimizes the force that the user user has to do on the follower 10 of the counter lock 5 to open the door 1.

Finally, the secondary leaf 3 can be opened by acting directly on the follower 10 of the counterlock 5 or on a handle 40 that is arranged housed in the box 6. The handle 40 is pivotally coupled to the box 6 through a coupling 41 respective. The handle 40 comprises a projection 43 that crosses the front 7 of the counterlock 5, being accessible from the outside of the secondary leaf 3, and an extension 42 that is housed inside the box 6. When the counterlock 5 is manually operated from the outside through the handle 40, actuating the projection 43 towards the outside, the handle 40 rotates, in the opening direction, with respect to the coupling 41, pushing the extension 42 of the handle 40 the drive cam 30 and causing it to rotate in the opening direction as seen in Figures 13 to 15. Puller 40 contacts drive cam 30 directly through extension 42. Once puller 40 rotates drive cam 30, it repeats the unlocking process described for the case in which the drive cam 30 is rotated through the follower 10 by acting on a handle or safety device, so that everything described above from g iro of the drive cam 30 is also applicable here and the description will not be repeated.

Claims (11)

1. Counter-lock for a passive leaf of a double-leaf door, comprising a drive cam (30) coupled to a follower (10), an upper rule (12) configured to be coupled to an upper espagnolette (18) through which the passive leaf (3) remains locked at an upper locking point (A) when the counterlock (5) is in a neutral position, and a lower rule (15) configured to be coupled to a lower espagnolette (19) through which the passive leaf (3) remains locked at a lower locking point (B) when the counterlock (5) is in the neutral position, both rulers (12,15) being movable relative to each other, the drive cam (30) to move at least one of the rules (12,15) when the follower (10) is rotated in an opening direction causing the release of the upper and lower locking points (A, B) of the passive sheet (3), characterized in that it comprises locking means (60) configured to keep Having blocked the movement of the rules (12,15) in the neutral position of the counterlock (5), the blocking means (60) comprising a rocker (20) coupled to at least one of the rules (12,15) to move said rulers (12,15), locking the drive cam (30) in the neutral position of the counter lock (5) the rotation of the rocker arm (20) preventing it from moving the rulers (12,15), the means of unlocking lock (60) when the follower (10) is rotated in the opening direction, characterized in that the rocker (20) comprises a wedge-shaped projection (23) that, in the neutral position of the counterlock (5), makes a stop against a retaining surface (36) of the drive cam (30), the drive cam (30) keeping the rotation of the rocker arm (20) locked in said neutral position. Counter-lock for passive leaf according to the preceding claim, in which the retention surface (36) of the actuation cam (30) is a curved surface. 3. Passive leaf counterlock according to the preceding claim, wherein the retaining surface (36) is a curved surface substantially concentric to an axis of rotation of the actuating cam (30). 4. Counterlock for passive leaf according to any of the preceding claims, wherein the actuation cam (30) comprises an actuation surface (32) configured to move the lower ruler (15) when the follower (10) is rotated in the direction opening, said actuation surface (32) not being in contact with the lower rule (15) in the neutral position. 5. Passive leaf counterlock according to any of the preceding claims, wherein one end (23b) of the projection (23) of the rocker arm (20) maintains contact with the retention surface (36) of the actuation cam (30) during the rotation of the drive cam (30) in the opening direction from the neutral position until the drive surface (32) contacts the lower rule (15), preventing the drive cam (30) from turning the rocker arm ( twenty). 6. Counter-lock for passive leaf according to any of the preceding claims, wherein the rocker (20) is pivotably coupled to a box (6) of the counter-lock (5) through a first coupling (24), also being arranged said rocker arm (20) coupled respectively to the lower rule (15) and to the upper rule (12) through a second coupling (21) and a third coupling (22), said second coupling (21) and third coupling being arranged (22) at opposite ends of the rocker arm (20). Counter-lock for a passive leaf according to any of the preceding claims, comprising a pusher (50) that in the neutral position is arranged resting on the actuation cam (30). 8. Passive leaf counterlock according to the preceding claim, wherein the pusher (50) is arranged coupled through a coupling (51), said pusher (50) being pivotable with respect to said coupling (51), the support being arranged between the pusher (50) and the drive cam (30) in the neutral position below the axis of rotation of the coupling (51) when the counterlock is mounted on a door, forcing the pusher (50) to remain supported on the drive cam (30). 9. Counterlock for passive leaf according to claims 7 or 8, wherein the actuation cam (30) comprises a support surface (35) that in the neutral position is arranged in contact with a support surface (52) of the pusher ( 50) the support surface (35) of the drive cam (30) being configured to pivot the pusher (50) in the opposite direction to the opening direction of the follower (10) when the follower (10) is actuated in the direction opening. 10. Counter lock for passive leaf according to any of the preceding claims, comprising a handle (40) including a projection (43) accessible from the outside of the counter lock (5), and an extension (42) configured to actuate the cam. activation (30) so that, when the handle (40) is activated through the projection (43), it causes the rotation of the activation cam (30) and the release of the locking points (A, B) of the passive leaf (3). 11. Counterlock for passive leaf according to the previous claim, wherein the handle (40) contacts directly with the actuation cam (30) through the extension (42) when the handle (40) is actuated from the outside, making said extension (42) pivot the drive cam (30) in the opening direction.