Activatable latch bolt with pivotable head

Abstract

The invention relates to a tilt latch, as well as a lock or door or window equipped therewith. The invention further relates to a method for operating such a door or window. The tilt latch according to the invention is characterized in that, when the door or window is unlocked, the tilt latch remains in the locked position.

Description

Technical field of the invention

[0001] The invention relates to a tilting latch, also called a cross latch or swing latch, with the features according to claim 1 and the preferred embodiments according to claims 2 to 8, as well as a lock or a door or window equipped therewith. The invention further relates to a method for operating such a door or window.

[0002] A tilting latch is a special type of lock latch. Previous tilting latches are characterized by the fact that they always tilt away after the lock is unlocked and that they can be easily opened when under load. In contrast, the tilting latch according to the invention is characterized by the fact that the latch head does not tilt when the door is unlocked, so that the door cannot be opened by pushing against it, but is fixed in the rest position, as was previously only known with "normal" lock latches. To cause the latch head to tilt, a deliberate action is required, be it by the handle, the key, or another operating device. This ensures that the door remains closed even in the unlocked state as long as no one intends to open it. Such a tilting latch is known, for example, from EP 2 975 202 A1.The invention also relates to a door lock, in particular a panic lock, which has a tilting latch according to the invention, and to a method for operating this door lock. State of the art

[0003] A latch is a component of a lock that ensures the door engages in a designated recess on the strike plate when closed, thus locking it shut. The latch, which engages in the strike plate, holds and positions the door within the frame. The latch typically consists of a wedge-shaped metal head that snaps into the recess in the strike plate of the door or frame, thereby locking the door.

[0004] When the door closes, the strike plate pushes the latch back into the lock against the resistance of a latch spring, over the angled surface of the latch head. The latch spring then pushes the latch back into its designated recess in the strike plate, thus keeping the door closed. When the handle is turned, or when the key or a suitable mechanism opens the lock, the latch is retracted back into the lock (the "retracted latch position"), and the door can be opened.

[0005] As a rule, the latch is held in the recess in the strike plate ("closed rest position", "locked position") by a latch spring.

[0006] A tilt latch is a special type of lock latch that allows a door to be easily opened when it is under a preload. This situation occurs, for example, when the door warps due to temperature fluctuations, the strike plates are poorly adjusted, or the door is forced open by fleeing individuals in an emergency. Unlike a standard lock latch, a tilt latch does not need to be retracted; instead, the tilting mechanism is released when the door is unlocked or while the lock is in the unlocked position. Therefore, the locking mechanism of the latch is released when the door is in the open position.

[0007] A major disadvantage is that the tilt latch remains disengaged when the lock is unlocked. This allows the door to be easily pushed open without using a handle or key. Sometimes even a strong gust of wind is enough to open the door. Furthermore, it cannot be combined with an electronic door opener that controls access via the latch. This is because the lock must be unlocked electronically or manually during normal operation, which also disengages the tilt mechanism, allowing the door to be opened even without the door opener being activated. Additionally, the strike plate must be very precisely adjusted for tilt latches. Finally, doors with tilt latches are very noisy when closing. Summary of the invention

[0008] The object of the invention is to overcome the disadvantages of the prior art, i.e., to provide a latch, in particular a toggle latch, which does not remain disengaged when the door lock is unlocked, but at the same time allows a door equipped with this to be opened under preload with minimal force. This was not previously known from the prior art.

[0009] This task is solved by a tilting latch for a door lock comprising a tilting latch head and a blocking element, wherein the trap head is switchable between a locking position and a release position, wherein the trap head has first locking means on the side facing the blocking element and the blocking element has complementary second locking means on the side facing the trap head, wherein the first and second locking means engage in a locking connection in the locking position of the trap head, and wherein in the release position of the trap head the first and second locking means are separated from each other and the trap head is tilted.

[0010] The tilting trap also comprises, according to the invention, a slide guided translationally movable in a guide sleeve, wherein a trap stem is mounted in the slide, wherein the trap stem is connected to a trap head, wherein a locking element is arranged on the trap stem, and wherein the trap stem has a first return spring between the slide and the locking element.

[0011] For the first and second locking devices, any type of geometry is conceivable that makes it possible to create a locking connection from the first and second locking devices, and thus to hold the latch head in the locked position.

[0012] In a preferred embodiment of the tilting latch according to the invention, the locking connection between the first and the second locking means is positive-locking. In a further preferred embodiment of the tilting latch according to the invention, one of the two locking means is a recess, in particular a U-shaped recess, and the other of the two locking means is a projection adapted thereto, in particular a lug. Preferably, the second locking means is a recess, in particular a U-shaped recess, and the first locking means is a projection adapted thereto, in particular a lug.

[0013] In another preferred embodiment, the two locking means are located centrally on the trap head and on the blocking element, i.e. symmetrically in the middle of the trap head or the blocking element, or symmetrically to the axis of the trap stem.

[0014] The latch head can also be fitted with appropriate damping elements to further optimize the noise level when closing a door equipped with this feature. These damping elements are advantageously made of plastic, particularly thermoplastic materials with high rigidity, low coefficients of friction, and good dimensional stability, such as polyoxymethylene.

[0015] The latch head and the locking element are preferably arranged such that translational guidance of both is possible. This can be achieved, for example, by longitudinal guides. The guidance can be effected by a pin attached to the locking element in a groove, a slot, or a bore.

[0016] In one embodiment, the trap head and the blocking element are attached to a trap shaft.

[0017] In another embodiment, the trap head and the blocking element are attached to a trap stem.

[0018] The latch head's tilting direction is reversible. Depending on whether a DIN-L or DIN-R lock equipped with this feature is installed, the latch head tilts either to the right or left, i.e., in the direction of the holding force. This movement of the latch head can also be described as rotation around an axis, or as pivoting or turning.

[0019] In a further preferred embodiment of the tilting trap according to the invention, a second return spring is attached to the trap stem, by which the trap head is spring-loaded and returned to the locked position, i.e., the rest position. Instead of this return spring, another element could also be used to achieve this, e.g., an elastic molded part made of rubber or an elastic plastic.

[0020] Any type of spring element can be used independently for the first and second return springs, for example a linear spring, torsion spring, coil spring, leg spring or torsion spring.

[0021] In another preferred embodiment, the trap stem is connected to the trap head via a cylindrical pin and a tilting joint. Alternatively, any other type of mechanical fastener that allows rotation about an axis, such as screws, sleeves, or rivets, would be possible.

[0022] In a particular embodiment, the locking element is connected to a latch lever. Thus, the locking element can be reset by moving the latch lever. In a preferred embodiment, the latch lever has a latch spring and a latch stop.

[0023] The trap spring can be any type of spring element, for example a linear spring, torsion spring, coil spring, leg spring or torsion spring.

[0024] In this preferred embodiment, the trap lever can be brought into a first position with a first force F1 and into a second position with a second force F2, wherein F2 is greater than F1, wherein in the first position of the trap lever the trap head is in the locking position, and wherein in the second position of the trap lever the trap head can move into the release position, provided the conditions for this are met.

[0025] The force F1 would, for example, be exerted by a user of a door equipped with the tilting latch according to the invention when the handle is operated with the door open and unlocked, or when a small preload is exerted with the door unlocked and closed, i.e., closing the door and operating the handle.

[0026] The force F2 would, for example, be exerted by a user of a door equipped with the tilting latch according to the invention when he operates the handle and an additional force is added, for example if the door warps due to temperature differences, the strike plates are poorly adjusted or the door is subjected to a preload by fleeing persons in emergencies.

[0027] Instead of a trap lever, other actuating elements could also be used by which the trap head, the slide, the blocking element, or the trap stem can be moved.

[0028] This ensures that when a lock is unlocked, the tilting latch remains in the locked position and is only released, i.e., activated, by a further action. This makes it possible to operate a door lock equipped with the tilting latch according to the invention in conjunction with an electronic door opener, since unlocking the lock does not simultaneously release the tilting latch, as was previously the case.

[0029] The invention therefore also relates to a lock equipped with a tilting latch according to the invention, in particular a mortise lock, as well as a door or window equipped therewith. The lock can be used for each leaf of a door or window. The tilting latch according to the invention can be housed not only in the lock case, but also in a secondary case and / or in a top locking mechanism of a door or window.

[0030] In a preferred embodiment of a door according to the invention, the tilting latch is housed in the lock case.

[0031] A further object of the invention is a method for operating a lock equipped with a tilting latch according to the invention, wherein the lock comprises a bolt movably guided in the lock case and a locking device arranged in the lock case, wherein the bolt is moved between an open position and a closed position by actuating the locking device, characterized in that the tilting latch is arranged such that the latch head of the tilting latch is in the locked position when the bolt is in the open position, and can be brought into the release position by actuating an actuating device.

[0032] In a preferred embodiment of the inventive method, the toggle latch is housed in the lock case. In a particularly preferred embodiment of the inventive method, the toggle latch housed in the lock case is a toggle latch whose blocking element is connected to a latch lever, wherein the latch lever preferably comprises a latch spring and a latch stop. A particularly preferred method is one in which the latch lever of the toggle latch housed in the lock case can be moved into a first position by a first force F1 and into a second position by a second force F2, wherein F2 is greater than F1, wherein in the first position of the latch lever the latch head is in the locked position, and wherein in the second position of the latch lever the latch head is in the release position.

[0033] Within the scope of the invention, any combination of a preferred embodiment with any number of other (preferred) embodiments is included, even if these combinations are not explicitly mentioned. Brief description of the drawings

[0034] The following figures show a preferred embodiment of the inventive tilt latch for a right-closing door in several views. Of course, the invention is not limited to this embodiment. Furthermore, the inventive tilt latch is suitable for both right- and left-closing doors. The tilt latch would also be suitable for garage doors or doors that fold upwards. Fig. 1 shows a preferred embodiment of a tilting trap according to the invention with an associated trap lever in an oblique side view on the left. Figure 2 The tipping trap indicates Figure 1 in side view from the left and from below. Fig. 3The tipping trap indicates Figure 1 Side view from the rear. Fig. 4 The tipping trap indicates Figure 1 from the front, i.e., looking at the top of the skirt. Fig. 5 The tipping trap indicates Figure 1 in side view left. Fig. 6 The tipping trap indicates Figure 1 In the locked position (rest position), the door can be closed from below or from above, depending on whether the symmetrical tilt latch is set to the left or right. In this position, the door can be closed or is already closed. Fig. 7 The tipping trap indicates Figure 1 in the retracted position from below, i.e. the latch head is retracted into the door lock. Fig. 8 The tipping trap indicates Figure 1 in the tilted state, i.e., activated state or in the release position, from below or from above, depending on whether the symmetrical tilting latch has been set to the left or right. Fig. 9shows a section of a door or window according to the invention in side view with the tilting latch according to the invention located in a lock case. Figure 1 The tilting trap is in the locked position. The trap head is extended from the strike plate. Fig. 10 shows a section of a door or window according to the invention in side view with the tilting latch according to the invention located in a lock case. Figure 1 The toggle latch is still in the locked position. The latch head is retracted into the lock case. Preferred embodiments of the invention

[0035] Fig. 1 Figure 1 shows a preferred embodiment of the tilting latch 1 according to the invention with the associated latch lever 7 in a slanted side view on the left. The tilting latch is in the locked position. This is the case when a door equipped with it is closed.

[0036] In the Figure 1In the tilting trap shown, a trap stem 5 is mounted in the slide 3, which is guided translationally in a guide sleeve 4. This trap stem 5 is connected to the tilting trap head 13 via a cylindrical pin 10 as a tilting joint 9. The locking element 11 is arranged on the trap stem 5 opposite the trap head 13. The trap stem 5 has a first return spring 12 between the slide 3 and the locking element 11 and a second return spring 14 between the locking element 11 and the trap head 13. The locking element 11 is connected to a trap lever 7, which has a trap spring 6 and a trap stop 8. The trap lever 7 can be moved into a first position when a first force F1 is applied, thereby retracting the locking element 11 towards the slide 3 and guide sleeve 4. The blocking element 11 remains locked to the trap head 13.If a greater force F2 is exerted on the trap lever, the trap lever 7 is moved into a second position, whereby the locking element 11 is pulled out of the latch with the trap head 13, thereby releasing the latch, and the trap head 13 tilts.

[0037] Figure 2 The tilting trap 1 indicates Figure 1 From above. Here, the first and second locking elements 18, 19 are particularly visible. It can be seen that the trap head 13 has a lug on the side facing the locking element as the first locking element 18, and the locking element 11 has a corresponding recess on the side facing the trap head as the complementary second locking element 19. In the locked position of the trap head 13 shown here, the lug 18 and the recess 19 engage in a positive locking connection. In the release position of the trap head 13, the lug 18 and the recess 19 would be separated, and the trap head 13 could tilt.

[0038] In Fig. 3 Is the tipping trap 1 after Figure 1 The side view from the rear shows the coupling of the movement of the latch lever 7 with the movement of the locking element 11 via a cylindrical pin 22 mounted in a guide 21. The movement of the latch lever 7 is limited on the one hand by the guide 21 on the locking element 11, and on the other hand by the stop on the latch stop 8 fixed in the lock case when the latch head 13 is retracted into the lock case (see Fig. 10 ).

[0039] Fig. 4 The tilting trap 1 indicates Figure 1 From the front, i.e., looking at the strike plate 2. The strike plate 2 has a corresponding recess through which the tilting latch can be extended.

[0040] Fig. 5 The tilting trap 1 indicates Figure 1 in side view left.

[0041] Fig. 6Figure 1 shows a tilting latch 1 according to the invention in the locked position (rest position) from below or from above, depending on whether the symmetrical tilting latch has been adjusted to the left or right: The lug 18 on the latch head 13 is engaged with the recess 19 of the blocking element 11. In this position, the door can be closed or is already closed. The door is closed by pressing the blocking element 13 with the latch head 13 engaged therein through the strike plate towards the slide 3 or guide sleeve 4 against the force of the latch spring 6. Fig. 7 Once the door is closed, the latch spring 6 pushes the blocking element 11 with the latch head 13 engaged in it back into the position it was in Fig. 6 The situation shown is shown.

[0042] Fig. 7Figure 1 shows the preferred embodiment of this tilting latch 1 in the retracted position from below or from above, depending on whether the symmetrical tilting latch has been adjusted to the left or right, i.e., the latch head 13 is engaged with the locking element 11 and retracted into the door lock. It can also be seen that the two locking means 18, 19 are located centrally on the latch head 13 and the locking element 11, respectively, i.e., symmetrically in the center of the latch head 13 and the locking element 11, respectively, and symmetrically to the axis of the latch shaft 5. The latch lever 7 has retracted the tilting latch 1, but the preload on the tilting latch was too low to trigger the tilting mechanism.

[0043] Fig. 8Figure 1 shows the preferred embodiment of this tilting latch 1 in the tilted state, i.e., the activated state or in the release position, from below. The locking element 11 was retracted by the latch lever 7; the preload on the tilting latch 1 was sufficient to release the latch head 13 from the locking element 11 against the spring force of the return spring 12 and to bring the latch head 13 into the tilted position. In this position, the tilting latch 1 can be pushed back into the lock by the strike plate of the frame. The door can then be opened.

[0044] Fig. 9 and 10 Figure 1 shows a section of a door or window according to the invention in side view, with a tilting latch 1 according to the invention, for example, located in a lock case. The movement of the latch lever is limited by the latch stop 8 fixed in the lock case. Fig. 9The tilting trap 1 is in the locked position: The trap head 13 is extended from the strike plate 2. Fig. 10 The tilting latch 1 is retracted and still in the locked position. The latch head 13 is retracted into the lock case.

[0045] A further object of the invention is a method for operating a lock 15, wherein the tilting latch 1 is located in the lock case 20 or in the secondary case or in the top locking mechanism, wherein the lock comprises a bolt movably guided in the lock case and a locking device arranged in the lock case, wherein the bolt is moved between an open position and a closed position by actuating the locking device, characterized in that the tilting latch 1 is arranged such that the latch head 13 of the tilting latch 1 is in the locked position when the bolt is in the open position, and can be brought into the release position by actuating an actuating device.

[0046] In a preferred embodiment of the inventive method, the toggle latch 1 is housed in the lock case 20. In a particularly preferred embodiment of the inventive method, the toggle latch 1 housed in the lock case 20 is a toggle latch whose blocking element 11 is connected to a latch lever 7, wherein the latch lever 7 preferably comprises a latch spring 6 and a latch stop 8. A particularly preferred embodiment is a method in which the latch lever of the toggle latch housed in the lock case can be moved into a first position by a first force F1, and in which the latch lever 7 can be moved into a second position by a second force F2, wherein F2 is greater than F1, wherein in the first position of the latch lever 7 the latch head 13 is in the locked position, and wherein in the second position of the latch lever 7 the latch head 13 is in the release position. Reference symbol list

[0047] 1 Tilt latch 2 Faceplate 3 Slide 4 Guide sleeve 5 Latch stem 6 Latch spring 7 Latch lever 8 Latch stop 9 Tilt joint 10, 10' Cylinder pin(s) of the tilt joint 11 Locking element 12 Return spring of the locking element, first return spring 13 Latch head 14 Return spring of the latch head, second return spring 15 Door lock 16 Housing 17 Door 18 Projection, in particular nose 19 Recess, in particular U-shaped recess 20 Lock case 21 Guide 22 Cylindrical pin

Claims

1. A latch bolt with pivotable head (1) for a door lock comprising a tiltable latch head (13) and a blocking element (11), whereby the latch head (13) is switchable between a locking position and a release position, whereby the latch head has first latching means (18) on the side (13) facing the blocking element and the blocking element (11) has complementary second latching means (19) on the side facing the latch head, whereby the first and second locking means (18, 19) engage in a locking connection in the locked position of the latch head (13), and whereby in the released position of the latch head (13), the first and second locking means (18, 19) are released from each other and the latch head (13) is tilted; characterized in that the latch bolt with pivotable head (1) comprises a slide (3) guided in a translatory movable way in a guide sleeve (4), whereby a latch stem (5) is borne in the slide, whereby the latch stem (5) is connected to the latch head (13), whereby the blocking element (11) is arranged on the latch stem (5), and whereby the latch stem (5) has a first return spring (12) between the slide (3) and the blocking element (11).

2. The latch bolt with pivotable head (1) according to claim 1, characterized in that the latch stem (5) has a second return spring (14) between the blocking element (11) and the latch head (13).

3. The latch bolt with pivotable head (1) according to claim 1 and / or according to claim 2, characterized in that the locking connection between the first and the second locking means is form-fitting.

4. The latch bolt with pivotable head (1) according to one or more of the preceding claims, characterized in that one of the two locking means (18, 19) is a lug and the other of the two locking means (18, 19) is a U-shaped recess, preferably the first locking means (18) is a lug and the second locking means (19) is a U-shaped recess.

5. The latch bolt with pivotable head (1) according to one or more of the preceding claims, characterized in that the two locking means (18, 19) are each located centrally on the latch head and on the blocking element.

6. The latch bolt with pivotable head (1) according to one or more of the preceding claims, characterized in that the latch stem (5) is connected to the latch head (13) via a cylinder pin (10) by means of a tilting joint (9).

7. The latch bolt with pivotable head (1) according to one or more of the preceding claims, characterized in that the blocking element (11) is connected to a latch lever (7), whereby the latch lever (7) preferably has a latch spring (6) and a latch stop (8).

8. The latch bolt with pivotable head (1) according to claim 7, characterized in that the latch lever (7) is movable into a first position by a first force F1, and that the latch lever (7) is movable into a second position with a second force F2, whereby F2 is greater than F1, whereby in the first position of the latch lever (7) the latch head (13) is in the locked position, and whereby in the second position of the latch lever (7) the latch head (13) is in the released position.

9. A lock (15) for a wing of a door and / or a sash of a window with a lock case (20) and optionally at least one auxiliary case and optionally at least one top lock, whereby at least one latch bolt with pivotable head according to one or more of the claims 1 to 8 is located in the lock case (20) or in the auxiliary case or in the top lock.

10. The lock (15) according to claim 9, whereby the lock has a latch bolt with pivotable head according to claim 7 and / or 8 in the lock case (20).

11. A door (17) or a window containing a lock (15) according to claim 9 and / or claim 10.

12. A method for operating a lock (15) according to claim 9, whereby the latch bolt with pivotable head (1) is located in the lock case (20) or in the auxiliary case or in the top lock, whereby the lock comprises a bolt movably guided in the lock case and a locking device arranged in the lock case, whereby the bolt (60) is moved between an open position and a closed position by actuating the locking device, characterized in that the latch bolt with pivotable head (1) is arranged in such a way that the latch head (13) of the latch bolt with pivotable head (1) is in the locking position when the bolt is in the open position and is able to be moved into the release position by actuating an actuating device.

13. A method for operating a lock (15) according to claim 10, whereby the lock comprises a bolt movably guided in the lock case and a locking device arranged in the lock case, whereby the bolt is moved between an open position and a closed position by actuating the locking device, characterized in that the latch bolt with pivotable head (1) is arranged in such a way that the latch head (13) of the latch bolt with pivotable head (1) is in the locking position when the bolt is in the open position and is able to be moved into the release position by actuating an actuating device.

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