EP2792826A2 - Lock for a leaf of a door or window - Google Patents

Abstract

It is described a latch for a wing of a door or a window, with a forend and a housing, wherein in the housing at least one pivotally mounted latch member is arranged, and with an electromagnet for actuating a locking lever for releasing or blocking the at least one case element. There are at least one locking lever mounted on one side in a rotary bearing and a locking lever mounted on one side in a rotary bearing, wherein the axes of the rotary bearing of the locking lever and the rotary bearing of the locking lever are arranged parallel to each other. The force is applied to the locking lever and the locking lever respectively close to the associated pivot bearing, and the force transmission takes place in each case facing away from the pivot bearing on the locking lever or on the locking lever.

Description

The invention relates to a lock for a wing of a door or a window according to the preamble of claim 1.

From the DE 198 56 624 A1 is an electric door opener with a pivoting latch and with a pivotal latch engaging, pivotally mounted locking lever for locking the pivot latch and a movable armature for blocking or releasing the locking lever known. There is provided an electromagnetic actuator for the armature, wherein the actuating means comprises a coupled to the armature solenoid mechanism which is adjustable in the housing and optionally fixed in a position in which the armature is held in the blocking position with de-energized solenoid mechanism and energized in working current operation Electromagnet mechanism is moved to the release position, or in a position in which the armature is held in de-energized solenoid mechanism in the release position and moved in idle mode with energized solenoid mechanism in the locked position.

The disadvantage is a large stroke of the electromagnet required, possibly the door opener can jam at preload on the pivotal latch locking lever on the anchor.

Furthermore, from the DE 101 62 694 A1 a door opener according to the quiescent current principle known, with an electromagnet, which releases a lock designed as a cross latch locking element or locks.

The disadvantage is a large stroke of the electromagnet and a large installation space required.

The invention has for its object to form a compact lock for a wing of a door or a window, which reliably triggers even under preload.

The object is solved by the features of claim 1.

The subclaims form advantageous embodiments of the invention.

Known electrically actuated locks on doors or windows have a pivotally mounted latch element, in which engages a case of a usually arranged in the wing of the door or the window lock. Such locks are also known as so-called door opener. Furthermore, in another embodiment, a lock may be provided independently of the lock, with a latch element engaging in a recess provided with a strike plate. In a particular embodiment, the lock can be provided with cross latch elements, which can advantageously pivot into the housing of the lock.

Depending on the design of the lock so that a wing, as in the case of the door opener, be locked from the outside, from the inside the wing can be opened by a press arranged on the lock, as is common, for example, at the front doors. Furthermore, it may be advantageous in escape routes that an additionally arranged, electrically actuated lock is present, if it is, for example, doors in department stores, in forensic clinics or the like, which should be secured under normal circumstances. These locks must be able to be unlocked in case of emergency, such as fire, remote controlled by a smoke and fire alarm system. Even in the event of a power failure, a safety release must be carried out. Therefore, these locks are such that the lock is maintained by energizing an actuator, such as an electromagnet, so that in principle takes place unlocking in case of power failure.

Furthermore, it is particularly important that even with a preload acting on the latch, as it arises for example by escaping persons on a still locked door, does not lead to the terminals of the lock, but still triggers them safely.

This is accomplished by translating the force applied to the latch element (s) by means of levers in a plurality of stages such that the application of force occurs close to an axis of rotation of the lever and the forwarding of force to the next step is remote from the axis of rotation End of the lever takes place, whereby the force is significantly reduced in each case. Furthermore, the force is transmitted via inclined surfaces, which also causes a translation of the forces. As a whole, it is thus possible to reduce the preload to a force of less than 1%, which is still present at the blocking element actuated by the electromagnet, for example a blocking lever.

In an advantageous embodiment of the Verrieglung an acceleration section is provided for the armature of the electromagnet to increase the energy acting on the locking lever to the kinetic energy, whereby an increase of the applied energy is given by about 50%.

In the following an embodiment in the drawing with reference to the figures will be explained in more detail.

Fig. 1

einen Ansicht auf eine Verriegelung mit geöffnetem Gehäuse, wobei sich die Verriegelung in gesperrter Stellung befindet;

Fig. 2

eine Ansicht auf einen Ausschnitt der Verriegelung gemäß Fig. 1 im Bereich von in Sperrstellung überstehenden Fallenelementen;

Fig. 3

eine weitere Ansicht auf den Ausschnitt mit weiteren Elementen der Sperranordnung;

Fig. 4

den Schnitt IV-IV gemäß Fig. 3;

Fig. 5

eine Ansicht im Schrägbild auf die Elemente gemäß Fig. 4;

Fig. 6

den Schnitt VI-VI gemäß Fig. 3;

Fig. 7

ein Ausschnitt im Bereich des Elektromagneten und des Sperrhebels in gesperrtem Zustand;

Fig. 8

den Ausschnitt gemäß Fig. 7, wobei zu Beginn der Auslösebewegung des Ankers des Elektromagneten;

Fig. 9

den Elektromagnet mit dem Sperrhebel und freigegebenem Verriegelungshebel;

Fig. 10

den Schnitt XI-XI gemäß Fig. 13;

Fig. 11

eine Schnittdarstellung entsprechend Fig. 10, jedoch mit verschwenkten Fallenelementen;

Fig. 12

eine Schnittdarstellung entsprechend Fig. 10, jedoch mit in das Gehäuse der Verriegelung eingeschobenen Fallenelementen;

Fig. 13

eine Ansicht auf die freigegebene Verriegelung mit verschwenkten Fallenelementen.

Showing:

Fig. 1

a view of a lock with the housing open, wherein the lock is in the locked position;

Fig. 2

a view of a section of the lock according to Fig. 1 in the range of locking elements projecting in blocking position;

Fig. 3

another view of the detail with other elements of the barrier arrangement;

Fig. 4

Section IV-IV according to Fig. 3 ;

Fig. 5

a view in oblique view of the elements according to Fig. 4 ;

Fig. 6

the section VI-VI according to Fig. 3 ;

Fig. 7

a section in the region of the electromagnet and the locking lever in the locked state;

Fig. 8

the clipping according to Fig. 7 , wherein at the beginning of the tripping movement of the armature of the electromagnet;

Fig. 9

the electromagnet with the locking lever and released locking lever;

Fig. 10

the section XI-XI according to Fig. 13 ;

Fig. 11

a sectional view accordingly Fig. 10 but with pivoted trap elements;

Fig. 12

a sectional view accordingly Fig. 10 , but with trapped in the housing of the latch traps elements;

Fig. 13

a view of the released latch with pivoted latch elements.

In the Fig. 1 For example, a latch 1 for a wing of a door or a window is shown with an intended housing cover removed to show the structure of the latch 1. The lock 1 comprises a fixed to a faceplate 2 housing 3. With the forend 2, for example, in a lock pocket inserted in the wing, not shown here interlock 1 on the wing can be defined. Alternatively, the latch 1 can also be arranged elsewhere, for example in the frame surrounding the wing. The latch 1 may be provided in addition to a usually arranged in the wing lock to realize a fernentriegelbare door. The lock 1 can also be supplemented with a lock cylinder and replace the usually provided lock with an arrangement in the wing.

Based on Fig. 1 , in which the locked state of the lock 1 is shown, the essential parts of the lock 1 will be explained. About the forend 2 stand the case elements 4, wherein the one-sided oblique trap elements 4 are perpendicular to the lateral edges of the forend 2 with their straight side. The trapping elements 4 form a so-called cross-trap, in which the middle trapping element 4 is arranged in reverse, the straight sides of the two trapping elements 4 being directed towards an edge of the forend 2 and the middle trapping element 4 being directed towards the opposite other edge of the forend 2 is. The oblique surfaces of the trap elements 4 point towards the middle of the stup 2. The latch elements 4 engage in a known manner in a recess in the wing or in the frame, which can be reinforced in a generally known manner by a strike plate. The latch elements 4 are pivotally mounted and abut against a slide 8. Furthermore, a control latch 5 is provided, which is shown here in its retracted position. The control latch 5 is inserted with the wing closed and serves to detect the state "wing open" or "wing closed".

The lock 1 is electrically driven with an electromagnet 6, wherein instead of the electromagnet 6, another actuator, such as a piezoelectric element, may be provided. It is often, as in the present embodiment, provided that the lock 1 is locked in active, ie energized electromagnet 6 and the latch elements 4 are locked. This is particularly desirable when used in escape routes, since the escape route must be released in case of power failure and the wing must be unlocked. To connect the lock 1, a circuit board 13 with terminals 14 in the housing 3 is further arranged. The electronics on the board are configured to provide signaling signals about the state of the latch 1, such as latched or unlocked, and about the state of the leaf, open or closed. On the circuit board 13, the arrangement of a current control for the electromagnet 6 may be provided which controls after an initially high current required when the electromagnet 6 to a low holding current back to thermal overload of the locked in the locked state of the latch 1 permanently energized electromagnet 6 to prevent. Cost-effective and energy-saving so the power consumption is reduced. Furthermore, other signals, as the state of the locking lever 11 are processed internally, these signals are not provided externally to the terminals 14.

In the following, for general understanding, the explanation of the arrangement of the elements of the locking arrangement of the lock 1. The in the Fig. 1 shown electromagnet 6 is designed as a pull magnet, whereby the pivotally mounted in a pivot bearing 15 locking lever 7 is in the direction of the electromagnet 6 in the blocking position. The locking lever 7 blocks a pivoting movement of a locking lever 11, which is mounted in a pivot bearing 16. By the locking lever 11 is a rotational movement of a rotary body 10, which is rotatably mounted in bearing blocks 24, locked. The rotary body 10 prevents a pivoting movement of the two locking levers 9, which are each mounted in a pivot bearing 17, whereby the arranged between the locking levers 9 slide 8 is prevented from a displacement movement and the latch elements 4 are blocked.

It is essential that the multi-stage locking arrangement forces, which acts on the latch elements 4 by a preload, can be substantially reduced in order to ensure a reliable triggering of the latch 1 even at high preload. A preload on the locked trap elements 4 arises when, for example, escaping persons crowd against the closed and locked wing of the door. As a result, the lock assembly must not jam. When switching off the electromagnet 6, the unlocking and release of the wing must be done safely. In the following, the reduction of the force applied to the latch elements 4 by preload in the different stages of the latching arrangement will be described in detail, with the elements being assumed to be released for describing the movement sequences.

The guided in the housing 3, acted upon with slide springs 18 in the direction of the forend 2 slide 8 is moved when opening the wing against the slide springs 18 of the forend 2 away by the latch elements 4 in the housing 3 into it. The interaction of the latch elements 4 with the slide 8 will be described in more detail below. Both sides of the slide 8 are bevels 19 arranged at an angle of advantageously 45 °, which cooperate with the arranged on both sides of the slide 8 locking levers 9. Each of the detent lever 9 is pivotally mounted in a pivot bearing 17 and acted upon by a leg spring 20 in the direction of the slide 8, wherein leg springs 20 can be arranged with different lengths thighs and different thickness in corresponding receptacles, as is particularly in the Fig. 2 is shown. Of course, each same leg springs 20 are used for the two locking lever 9. Facing the bevels 19 of the slider 8, each locking lever 9 has a contour 21 along which the slide 8 with the bevels arranged on both sides 19 pushes the locking lever 9 apart. Each locking lever 9 is pivoted about 30 °. Advantageously, the force acting on the slide 8 force is divided on the two locking lever 9.

The force is introduced into the rotary body 10 via a arranged on each of the locking lever 9 Hubschrägen 22. The rotary body 10 is mounted in the bearing bar 12 in arranged at the ends of bearing blocks 24, which also serve to attach the bearing bar 12 on the housing 3, with bearing pins 25. The rotary body 10 is further acted upon by a return spring 26 which is supported against the cover of the housing 3. In an alternative embodiment, a leg spring, which is arranged around one of the bearing pins 25, may be provided for resetting. The pivotable rotary body 10 has a recessed area, which is bounded by opposing inclined surfaces 27. Between these mutually facing inclined surfaces 27, the ends of the locking lever 9 are arranged, wherein the respective lifting bevel 22 rests against the associated inclined surface 27, as in the section IV - IV in Fig. 4 and in the Fig. 5 is shown. By the pivotal movement of the locking lever 9, first the lifting ramps 22 slide on the inclined surfaces 27, whereby the rotary body 10 rotates about the bearing pins 25 and is raised against the return spring 26. Advantageously, the forces distributed by the slide 8 on the two locking lever 9 forces in the rotary body 10 by canceling the transverse force components, which act along the rotary body 10, brought together again. After sliding the lifting ramps 22 on the inclined surfaces 27 goes for the further pivoting movement the locking lever 9, the lifting ramp 22 in the slip slope 23 and holds the rotary body 10 in the raised position.

It is possible to reduce the force applied to the locking lever 9 by the slide 8 into the force acting on the rotary body 10 by up to about 80%. The power is removed by leverage by the force is applied to the locking lever 9 close to the pivot bearings 17 and the force transmission to the rotary body 10 far from pivot 17 at the ends of the locking lever 9, and by the transfer to the two Hubschrägen 22 on the inclined surfaces 27 of the rotary body 10th

As it is in the Figures 3 and 6 is shown, the locking lever 11 is pivotally mounted in a pivot bearing 16 and acted upon in the release direction with a lever spring 29 which bears against a contact surface 28 of the locking lever 11. The locking lever 11 prevents locked lock 1, that the rotary body 10 can rotate about the bearing pins 25 against the return spring 26. For this purpose, a locking surface 30 is close to the pivot bearing 16 of the locking lever 11 in the end to the pivot bearing 16 in the region of the section line VI-VI in the locking lever 11 Fig. 3 arranged. The blocking surface 30 acts together with a pivot bearing surface 31, as in the section VI-VI in the Fig. 6 is shown, and holds in the blocking position of the locking lever 11, the rotary bearing surface 31 down and prevents the rotary body 10 at a pivoting movement against the return spring 26. On the rotary body 10, a recess 32 is further provided, in which in the blocking position of the locking lever 11, a reinforcing web 33 is added.

The locking lever 11 has at its opposite the pivot bearing 16 end a rotatably mounted roller 34 which cooperates with the locking lever 7. Alternatively, instead of the roller 34 and a sliding element on the locking lever 11 may be provided or formed. The roller 34 is due to the lever spring 29 in the locked position on the locking lever 7. Advantageously, the force acting on the locking lever 7 force is significantly reduced by the different length effective lever on Verrieglungshebel 11. The initiation of the force on the Locking lever 11 takes place, as described above, close to the pivot bearing 16, with a short effective lever, wherein the effective lever from the pivot bearing 16 to the roller 34 is substantially longer. The introduced into the Verrieglungshebel 11 by the rotary body 10 force can be reduced by up to about 90%.

Based on FIGS. 7 to 9 the tripping operation by the electromagnet 6 will be explained. The electromagnet 6 comprises a rod-shaped armature 35 which is acted upon by an armature spring 36 which pulls the armature 35 out of the coil of the electric motor 6 when the electromagnet 6 is de-energized. The armature spring 36 is supported at one end on the electromagnet 6 and the other end fixed to the armature 35, wherein the armature spring 36, for example, on a locking ring which is arranged in a groove on the armature 35, supported. Is the solenoid 6 energized, the armature 35 is retracted against the armature spring 36, as shown in the Fig. 7 is shown. The armature 35 is flattened in its outer end region and provided with a pin 37, which engages in a slot 38 which is provided in the locking lever 7, wherein the slot 38 serves as an acceleration distance s for the armature 35. If the electromagnet 6 is energized, the pin 37 is within the slot 38 in abutment with the electromagnet 6 facing wall, wherein the locking lever 7 is pivoted by retraction of the armature 35 into the electromagnet 6 in the blocking position. The locking lever 7 has the rotary bearing 15 opposite a curved track 39, on which the roller 34 rests. The track 39 may be arranged eccentrically with respect to the pivot bearing 15 of the locking lever 7 in order to support the movement in the release direction of the locking lever 7 by the lever spring 29 and by a possibly pending preload. Furthermore, a straight portion of the track 39 may be provided, on which the roller 34 rests in the locked state of the locking lever 11.

If the armature 35 of the electromagnet 6 release, in which the electromagnet 6 is turned off, the armature spring 36 accelerates the armature 35 initially unhindered along the acceleration section s within the slot 38 of the locking lever 7. Does the pin 37 of the armature 35 to the electromagnet. 6 opposite wall in the slot 38, as in the Fig. 8 will be shown Pulse initiated on the locking lever 7, whereby the unlocking force is increased by about 50%, which ensures triggering of the latch 1 even at high preload on the latch elements 4. Also conceivable are other arrangements, for example, the acceleration section s is a free path of the armature 35 until it hits the locking lever 7. The retrieval of the locking lever 7 in the locked position can be done for example by a locking lever 7 embracing hook-like extension on the armature 35.

The roller 34, which is arranged constructively in the end region of the track 39 of the locking lever 7, is released by the pivoting movement of the locking lever 7, whereby the locking lever 11 is acted upon by the lever spring 29 pivots in the release position. As a result, the rotary body 10 is free, and according to the above-described sequences pivot the locking lever 9 to the outside, whereby the slide 8 is free, and the latch elements 4 in the face plate 2 and the housing 3 can swing into it. If the electromagnet 6 is energized again, the armature 6 is retracted and the locking lever 7 pivoted back, the roller 34 of the locking lever 11 is guided along the locking lever 7 and the locking lever 11 is raised.

In the FIGS. 10 to 12 is again the lock 1 shown in various states, wherein Fig. 10 the section XX according to Fig. 1 shows, in which the lock 1 is in the locked state with the wing closed, which is represented by the actuated, that is displaced into the forend 2 in the control latch 5. The FIGS. 11 and 12 show the lock 1 in the same cutting plane as in Fig. 10 , but in other states. In Fig. 11 is the cut XI-XI according to Fig. 13 the unlocked lock 1 shown. The two outer latch elements 4 are pivoted by an opening movement of the wing, for example by concerns of the latch elements 4 at the recess of a strike plate. Fig. 12 shows the state in which the latch members 4 are fully inserted into the housing 3 by the strike plate before the latch elements 4 leave the region of the strike plate and can extend out of the housing 3 with the wing further opening on the forend 2 addition.

As it is in Fig. 10 is shown, with locked lock 1, the locking lever 11 locking in abutment with the rotary body 10, whereby the locking lever 9 and the slider 8 are also locked. The trapping elements 4 guided in a trap guide 40 with the trap web 41 can not avoid an external force due to the locked slide 8 which is in contact with the trap elements 4. Each trap element 4 is assigned a latch guide 40 into which the respective latch web 41 engages. The middle trap guide 40 is installed inverted with respect to the two outer trap guides 40, as well as the middle case element 4 is arranged vice versa relative to the outer latch elements 4 and accordingly also the pivoting movement takes place in the opposite direction.

If the lock is released, here experience the outer latch elements 4 by the force applied to the latch elements 4 by the opening movement of the wing force, which is initiated by the system of the latch elements 4 with the above-mentioned strike plate, first a pivoting movement, the latch web 41 within the trap guide 40 and slide on the slider springs 18 acted upon slide 8. In the course of the pivoting movement of the latch elements 4 is in a rectilinear motion, wherein the latch elements 4 are further displaced into the housing 3, as shown in the Fig. 12 is shown. In this case, the middle case element 4 is now inserted, as this also comes into contact with the strike plate with its inclined surface.

The force applied to the latch elements 4 can be reduced by the sliding movement of the latch web 41 along the latch guide 40 during the pivotal movement of the latch elements 4 by approximately 50% to the force acting on the slide 8 force.

The preload can be reduced by the gradual reduction to a share of up to about 0.7%, which still rests on the locking lever 7. <u> List of reference characters </ u> 1 lock 25 bearing pins 2 stulp 26 Return spring 3 casing 27 sloping surface 4 case element 28 contact surface 5 Steuerfalle 29 lever spring 6 electromagnet 30 blocking surface 7 locking lever 31 Pivot bearing surface 8th pusher 32 recess 9 locking lever 33 strengthening web 10 Rotary body (Z latching step) 34 role 11 locking lever 35 anchor 12 bearing web 36 armature spring 13 circuit board 37 pen 14 jam 38 Long hole 15 pivot bearing 39 career 16 pivot bearing 40 case management 17 pivot bearing 41 case Steg 18 slidespring s Acceleration 19 slope 20 Leg spring 21 contour 22 Hubschräge 23 sliding bevel 24 bearing block

Claims (10)

Lock (1) for a wing of a door or a window, with a forend (2) and a housing (3), wherein in the housing (3) at least one pivotally mounted latch element (4) is arranged, and with an electromagnet (6 ) for actuating a locking lever (7) for releasing or blocking the at least one latch element (4),
characterized,
in that at least one locking lever (9) mounted on one side in a rotary bearing (17) and a locking lever (11) mounted on one side in a rotary bearing (16) are provided, the axes of the rotary bearing (17) of the locking lever and the pivot bearing (16) of the locking lever (11) are arranged parallel to each other, and
wherein the introduction of force on the detent lever (9) and the locking lever (11) respectively close to the associated pivot bearing (16, 17) and the force transmission respectively the pivot bearing (16, 17) faces away from the locking lever (9) or on the locking lever (11 ) he follows. Lock according to claim 1,
characterized in that a slider (8) is provided, which has bevels (19) arranged with a close to the pivot bearing (17) of the locking lever (9) arranged contour (21) for introducing force from the slider (8) on the locking lever ( 9) interact. Lock according to one of the preceding claims,
characterized in that a rotary body (10) for converting the force acting on the at least one latching lever (9) force on the locking lever (11) is provided, whereby the force effect on (by the pivoting plane of the locking lever (9) and through the pivoting plane of the locking lever 11) defined, mutually parallel planes is implemented. Lock according to claim 1 or 2,
characterized in that two latching levers (9) are provided on both sides of the slide (8), whereby the force applied to the slide (8) is split. Lock according to claim 3,
characterized in that on the rotary body (10) mutually facing inclined surfaces (27) are provided, each inclined surface (27) with an associated on each locking lever (9) arranged Hubschräge (22) for lifting the rotary body (10) cooperates, whereby the on two detent lever (9) distributed force is brought together by canceling the transverse force components. Lock according to claim 1,
characterized in that the locking lever (11) cooperates with its end remote from the pivot bearing (16) end with the locking lever (7). Lock according to claim 3,
characterized in that on the rotary body (10) a rotary bearing surface (31) is arranged, which cooperates with a close to the pivot bearing (16) of the locking lever (11) arranged locking surface (30). Lock according to claim 5,
characterized in that on the latching lever (9) a sliding bevel (23) is provided, which holds after lifting the rotary body (10) by the lifting ramp (22) in a further pivotal movement of the locking lever, the rotary body (10) in its raised position. Lock according to claim 3,
characterized in that the rotary body (10) with bearing pins (25) in bearing blocks (24) in a bearing web (12) is pivotally mounted. Lock according to claim 6,
characterized in that the locking lever (11) is arranged his from the pivot bearing (16) facing away from the end of a roller (34) which during a pivoting movement of the locking lever (7) to release the locking of 1 on a track (39) of the locking lever (7) rolls.

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