Actuation unit for panic door lock and panic door lock with such an actuation unit

Abstract

The invention relates to an actuating unit (10) comprising a base part (12) including a base section (20), a lever arm (14), and a handle (16), wherein the base part (12) has a bearing point (17) at which the lever arm (14) is pivotably mounted at one end and is pivotable between an unactuated and actuated position, wherein the lever arm (14) is connected to the handle (16) at the other end and has a cavity (24) in which a guide element (26) and a spring element (28) guided therein are arranged, wherein the guide element (26) has a contour (30) at its end facing the base part (12) which bears against a counter contour (32) formed on the base part (12), wherein the counter contour (32) is fixed on the base part (12), wherein the contour (30) and the counter contour (32) define a joint whose pivot axis (34) is arranged eccentrically to the pivot axis (18) of the lever arm (14).

Description

[0001] The invention relates to an actuating unit for a panic door lock with features of the preamble of claim 1. The invention further relates to a panic door lock and a door or window arrangement with the features of the respective dependent claims.

[0002] An operating unit for a panic exit device of the type mentioned above is known to the applicant from practical experience and is available on the market, for example, under the name "BKS bar handle for active door leaf B-74000". This operating unit has two base parts, two lever arms, and a handle connected to the lever arms. The lever arms are each pivotally mounted on one of the base parts and are pre-tensioned in the unactuated position by means of different torsion springs (different winding direction and different leg lengths). When pivoting the handle from the unactuated position to the actuated position, the torque increases (greater resistance) the further the handle is actuated, even though less torque would actually be required to pivot the handle and the lever arms back to the unactuated position. Furthermore, different torsion springs are required for the left and right base parts.The torsion spring occupies a corresponding amount of installation space on the base part, thus predetermining the arrangement of other components and the size of the housing for the base parts. Therefore, there is potential for optimization.

[0003] The invention is based on the objective of enabling lower operating forces and a compact design in an actuating unit using simple design means.

[0004] The invention solves this problem by means of an actuating unit with the features of claim 1.

[0005] The operating unit is designed and / or intended for use with a panic exit device. The operating unit comprises at least one basic component which includes at least one...

[0006] The operating unit has a base section. Furthermore, it has at least one lever arm and one handle.

[0007] The base part has a bearing point at which the lever arm is pivotally mounted at one end (first end) about a pivot axis and can pivot between an unactuated position ("rest position"; lever arm pivoted away from the base part) and an actuated position ("panic position"; lever arm pivoted towards the base part). At the other end (second end), the lever arm is connected to the handle.

[0008] The lever arm has a cavity, or in other words, is at least partially hollow. A guide element and a spring element, guided by the guide element, are arranged within the cavity. The guide element and the spring element are designed to hold the lever arm or handle in the unactuated position (pivoted away from the base). The spring element can, for example, be a compression spring.

[0009] The guide element has a contour at its end facing the base part, which abuts a counter contour formed on the base part. The counter contour can be at least partially complementary to the contour of the guide element.

[0010] The counter contour is fixed to the base (and thus also fixed in position relative to the pivot axis of the lever arm). The contour and the counter contour define a joint whose joint axis is eccentric to the pivot axis of the lever arm.

[0011] The spring element, via the guide element, holds the lever arm (when unactuated) in the unactuated position. When the handle is moved towards the actuated position, force must be overcome by the spring element.

[0012] By arranging the spring element in the lever arm, the base and any housing covering the base can be designed to be comparatively compact. Compared to previous solutions (e.g., the aforementioned B-74000), the more compact base and housing allow the handle to be extended, so that the operating unit can also be mounted on relatively narrow door or window sashes in accordance with standards. Furthermore, the same spring element can be used on both lever arms, simplifying initial installation and spare parts procurement.

[0013] The base section of the main part may have a mounting side or mounting surface on the side facing away from the pivot axis or lever arm, with which the main part can be mounted on a wing of a door or window.

[0014] The base section may also have a wall section projecting from the base section and forming an angle with the base section. The central longitudinal plane of the base section and the central longitudinal plane of the wall section may be oriented orthogonally to each other.

[0015] The bearing point, where the lever arm is pivotally mounted at one end around a pivot axis, can be located on the wall section. A nut can be rotatably mounted on the base section around a pivot axis, which can be coupled, for example, to a mortise lock (lock nut) of a panic exit device by means of a square drive.

[0016] A gearbox can be arranged on the base part, in particular between the nut and the wall section, via which the lever arm is coupled to the nut, so that when the lever arm is pivoted about the pivot axis (via the gearbox) the nut can be rotated about its axis of rotation or driven in a rotating manner.

[0017] The lever arm can be open on one side, particularly on the side facing the base. In this case, the hollow space of the lever arm faces the base and is open towards it. The lever arm can also be closed on another side, particularly on the side facing away from the base.

[0018] The term "actuating unit" refers to the device that can be mounted or is mounted on a door or window sash, which serves to trigger the panic door lock and is designed as a type A rod actuation (handle bar according to EN 1125).

[0019] Specifically, the actuating unit can comprise two base parts, two lever arms, and a handle connected to the lever arms. Each lever arm is pivotally mounted on one of the base parts. The guide element can be designed as, for example, a laser-cut or stamped, two-flat piece.

[0020] In a preferred embodiment, the spring element can be designed as a helical spring, and the guide element can extend through the spring's interior (central cavity of the helical spring). This results in a particularly compact and material-saving design for both the helical spring and the guide element. The helical spring is specifically designed as a compression spring. Compression springs exhibit higher fatigue strength than torsion springs. The risk of spring breakage is thus minimized.

[0021] Advantageously, the guide element can have a shoulder where it transitions from a first cross-section (guide element section with a first cross-section), which passes through the interior of the coil spring, to a second cross-section (guide element section with a second cross-section) that projects beyond the coils of the coil spring, so that the shoulder forms a stop for the coil spring (first stop). Thus, a spring stop is formed using simple design means. The shoulder forms a stop, in particular, at the end of the guide element where the contour of the guide element is located (facing the base part). In the guide element section with the first cross-section, the side edges facing the open and closed sides of the lever arm (narrow sides of the flat surface) can serve as guide surfaces for the spring element or the coil spring.

[0022] Specifically, a projection can protrude from the cavity, providing a passage through which the guide element extends. The coil spring rests against one side of the projection (facing the coil spring), so that the projection forms a second stop for the coil spring. This allows the guide element to be easily guided at the end furthest from the base part by the passage of the projection, with the projection also serving as a stop for the coil spring. The projection extends, in particular, from the closed side of the lever arm (away from the base part) to the open side of the lever arm (towards the base part). Preferably, the projection does not protrude from the lever arm. The passage can be designed as a slot open towards the open side of the lever arm or towards the base part. This facilitates installation and maintenance work, such as replacing the coil spring and / or the guide element.

[0023] In a preferred embodiment, the projection can be angled towards the helical spring, at least on the side facing the spring (at least at the free end of the projection), so that the helical spring is secured in the cavity. "Angled towards the helical spring" means that the side of the projection facing the helical spring forms an angle of less than 90°, preferably 60°–80°, at least partially with the central longitudinal axis of the lever arm and / or with the closed side of the lever arm (the side facing away from the base). This secures the helical spring in the lever arm (cavity) against unintentional release. Without external influences, the helical spring does not spring out of the lever arm (cavity). Rather, the helical spring must be compressed to release it, so that the end of the helical spring facing the handle can pass through the free end of the projection (facing the base).

[0024] As already indicated, the angle or angled design need not extend along the entire projection (although such a design is also conceivable), but should preferably be present at least at the free end of the projection (distal end) (first angled section). At the proximal end of the projection (closed side, facing away from the base), the projection can have a section with a different angle (further angled section).

[0025] Advantageously, the guide element can extend in an arc shape, at least in the area where the spring element and the guide element overlap (overlap area). In other words, the centerline or central longitudinal axis of the guide element can extend along an arc-shaped curve in the overlap area. This allows for a sufficiently long design of the spring element while keeping the cross-section of the lever arm compact.

[0026] Advantageously, the base section of the main part can have a central longitudinal plane, wherein the pivot axis of the lever arm and the joint axis are oriented parallel to each other and to the central longitudinal plane, and the joint axis is located at a smaller distance to the central longitudinal plane of the base section than the pivot axis of the lever arm. This contributes to a low overall height perpendicular to the central longitudinal plane of the base section or perpendicular to the flat side of a door or window sash on which the actuating unit is mounted.

[0027] Advantageously, a nut can be rotatably mounted on the base section about an axis of rotation, wherein the axis of rotation is oriented orthogonally to the central longitudinal plane of the base section, and wherein the pivot axis is a smaller distance from the axis of rotation of the nut than the pivot axis of the lever arm.

[0028] The two preceding measures, both individually and in combination, contribute to a significantly smoother force curve when the handle is actuated. The torque decreases as the handle is actuated from the unactuated to the actuated position (resulting in improved actuation forces during standard testing). Thus, as the handle is actuated, both the force arm (the distance between the point of force application, the contour and counter-contour (joint), and the pivot axis of the lever arm) and the force acting upon it are minimized, even though the spring element or compression spring (helical spring) is compressed. Consequently, the torque generated by the compression spring and the geometry of the components matches the torque actually required to return the lever arms and the handle to the unactuated position.

[0029] Specifically, the contour of the guide element can be convexly rounded, and the corresponding contour on the base part can (complementarily) be concavely rounded. This ensures secure guidance of the guide element (contour) on the base part (countercontour). The contour forms a kind of ball joint, and the countercontour forms a kind of socket joint. The countercontour can preferably be located on the wall section of the base part.

[0030] The aforementioned problem is also solved by a panic door lock with the features of the dependent claim. Regarding the advantages achievable thereby, reference is made to the relevant explanations concerning the actuating unit.

[0031] A panic exit device is designed and / or intended for locking a pivoting door or window sash relative to a door or window frame. The panic exit device has an operating unit with one or more of the aspects described above.

[0032] In a preferred embodiment, a (wing-side) locking device with at least one locking element (latch and / or bolt) can be provided, wherein the locking device is coupled to the actuating unit in such a way that the locking element can be actuated by means of the actuating unit. In particular, the locking element can be displaceable between an extended position (relative to the locking device) and a retracted position (relative to the locking device). The locking device can be designed as a mortise lock.

[0033] Specifically, the actuator's nut can be non-rotatably coupled to the nut of the locking mechanism or mortise lock by means of a square drive. The coupling is thus configured so that when the handle is pivoted, not only the actuator's nut but also (through the square drive coupling) the nut of the locking mechanism or mortise lock is actuated. This allows the locking element of the locking mechanism to be moved into the retracted position.

[0034] It may be expedient to provide a (frame-side) strike plate with which the locking element of the locking device (in the extended position) can be engaged.

[0035] The measures explained above and / or discussed below can be used to further develop the panic door lock.

[0036] The task mentioned at the beginning is also solved by a door or window arrangement with a frame (door or window frame), a sash pivotably mounted on the frame (door or window sash) and a panic door lock with one or more of the aspects described above.

[0037] The operating unit and the locking mechanism are arranged and / or attached to the sash of the door or window assembly. The operating unit can be mounted on a flat side of the sash, and the locking mechanism can be mounted on or in the sash, for example, as a mortise lock. The operating unit and the locking mechanism can be coupled by means of a square spindle, as described above. The strike plate can be mounted on the frame so that the locking element of the locking mechanism can engage with the strike plate.

[0038] The measures explained above and / or discussed below can be used to further design the door or window arrangement.

[0039] The invention is explained in more detail below with reference to the figures, where identical or functionally identical elements are provided with identical reference numerals, possibly only once. The figures show: Fig. 1 shows an embodiment of an actuating unit in a perspective view; Fig. 2 shows the actuating unit made of Figure 1 in a perspective exploded view; Fig. 3 a base part and a lever arm of the actuating unit made of Figure 1 in a perspective partial view; Fig. 4 a base part and a lever arm of the actuating unit made of Figure 1 in a partially cutaway side view in the unactuated position; and Fig. 5 a base part and a lever arm of the actuating unit made of Figure 1 in a partially cut-out side view in the actuated position.

[0040] Figure 1 Figure 1 shows a door arrangement 200 with a frame 202 and a leaf 204 pivotally mounted on the frame 202 (leaf and frame are shown only schematically). The leaf 204 can pivot relative to the frame 202 between an open position and a closed position and can be mounted on the frame 202, for example, by means of hinges (not shown).

[0041] Figure 1 Figure 100 also shows a panic door lock 100 for locking and unlocking the sash 204 on the frame 202. The panic door lock 100 has an actuating unit 10 which is mounted on the sash 204 and is described further below.

[0042] Furthermore, the panic door lock 100 has a locking device 102 with a locking element 104, wherein the locking device 102 is designed as a mortise lock. The locking element 104 can be a latch, a bolt, or a latch bolt.

[0043] The locking device 102 is coupled to the actuating unit 10 in such a way that the locking element 104 can be actuated by means of the actuating unit 10, and thus can be moved between a position retracted relative to the locking device 102 and a position extended relative to the locking device 102.

[0044] A strike plate 106 with an opening 108 is arranged on the frame 202, with which the locking element 104 can be engaged in the closed position of the sash 204 and in the extended position of the locking element 104.

[0045] As already indicated, it shows Figure 1An actuating unit 10 for a panic exit door lock. The actuating unit 10 comprises two base parts 12, each covered by a cover 13. The actuating unit 10 also includes two lever arms 14 and a handle 16. The handle 16 can be attached to the lever arms by means of coupling pieces 21 and screws 25.

[0046] The basic parts 12 each have a bearing point 17 at which the lever arms 14 are pivotably mounted at one end about a pivot axis 18 (see Figure 1 and 2 In the example, a shoulder bolt 19 is inserted through corresponding openings in the bearing point 17 and the lever arm 14, so that the lever arm 14 is pivotably coupled to the associated base part 12. Thus, the lever arms 14 can each be moved between an unactuated position ("rest position"; see Figure 1). Figure 4 ) and an activated position ("panic position"; cf. Figure 5) can be pivoted. The lever arms 14 are each connected at the other end (away from the base part 12) to the handle 16 (see figure). Figure 1 ).

[0047] The structure and function are described below using one of the basic parts 12 and one of the lever arms 14 (in this case the left elements), whereby the other basic part 12 and the other lever arm 14 can be constructed analogously, e.g. mirror-symmetrically.

[0048] The basic part 12 has a base section 20 and a wall section 22 projecting from the base section 20 and forming an angle with the base section 20 (see Figure 2 ). The mid-longitudinal plane 20' of the base section 20 (cf. Figure 4The wall section 20 and the central longitudinal plane of wall section 22 (not shown) are oriented orthogonally to each other in this example. The base section 20 has a mounting side 23 on the side facing away from wall section 22 or the pivot axis 18, with which the base part 12 can be mounted on the sash 204. The bearing point 17, on which the lever arm 14 is pivotally mounted, is formed in this example on wall section 22.

[0049] The lever arm 14 has a cavity 24 (see Figure 4 ). A guide element 26 and a spring element 28, guided by the guide element 22, are arranged in the cavity 20. The guide element 26 and the spring element 28 are designed to hold the lever arm 14 and the handle 16 in the unactuated position (see Figure 2). Figure 4 ) to hold. In this example, the spring element 16 is designed as a compression spring and the guide element 26 as a double flat.

[0050] The guide element 26 has a contour 30 at its end facing the base part 12, which rests against a counter contour 32 formed on the base part 12 (cf. Figure 4 The counter contour 32 is at least partially complementary to the contour 30 of the guide element 26. In the example, contour 30 is convexly rounded and the counter contour 32 is concavely rounded.

[0051] The counter contour 32 is fixedly formed on the base part 12, specifically on the wall section 22. Thus, the counter contour 32 is also fixedly arranged with respect to the pivot axis 18 of the lever arm 14. The contour 30 and the counter contour 32 define a joint whose joint axis 34 is arranged eccentrically to the pivot axis 18 of the lever arm 14.

[0052] The spring element 28 holds the lever arm 14 in the unactuated position via the guide element 26. When the handle 16 is actuated in the direction of the actuated position (see...). Figure 5) must be worked against the force of the spring element 28.

[0053] The lever arm 14 is open on a side 36 facing the base part 12 (cavity 24 open towards the base part 12). The lever arm 14 is closed on a side 38 facing away from the base part 12.

[0054] The spring element 28 is designed as a helical spring 29 (compression spring), and the guide element 26 extends through the interior of the helical spring 29 (central cavity). The guide element 28 has a shoulder 40 at which it transitions from a first cross-section 28', which extends through the interior of the helical spring 29, to a second cross-section 28'', which projects beyond the coils of the helical spring 29, so that the shoulder 40 forms a first stop for the helical spring 29. In the section of the guide element 28 with the first cross-section 28', the side edges 42, 44 facing the open side 36 and the closed side 38 of the lever arm 14 can serve as guide surfaces for the helical spring 29.

[0055] A projection 46 extends into the cavity 24, having a passage 48 through which the guide element 26 extends. The helical spring 29 rests against a side 49 of the projection 46 (facing the helical spring 29), so that the projection 46 forms a second stop for the helical spring 29. In this example, the projection extends from the closed side 38 of the lever arm 14 to the open side 36 of the lever arm 14 and does not protrude from the lever arm 14. The passage 48 is designed as a slot that opens towards the open side 36 of the lever arm 14.

[0056] The projection 46 is angled towards the coil spring 29 at least on the side 49 facing the coil spring 29, at least at the free end of the projection 46, so that the coil spring 29 is secured in the cavity 24. In this case, the side 49 of the projection 46 facing the coil spring 29 forms an angle of less than 90°, e.g., an angle of 60°–80°, at least partially with the central longitudinal axis 50 of the lever arm 14 and / or with the closed side 38 of the lever arm 14, specifically at the free end (distal end) of the projection 46 (first angled section 49'). At the proximal end of the projection 46, the projection 46 has a section with a different angle (further, less angled section 49'').

[0057] The guide element 26 extends in an arc shape at least in the area where the spring element 28 (coil spring 29) and the guide element 26 overlap (overlap area) (cf. Figures 4 and 5 ).

[0058] As explained above, the base section 20 of the base part 12 has a central longitudinal plane 20' (cf. Figure 4 The pivot axis 18 of the lever arm 14 and the joint axis 34 are oriented parallel to each other and to the central longitudinal plane 20' of the base section 20, with the joint axis 34 having a smaller distance to the central longitudinal plane 20' of the base section 20 than the pivot axis 18 of the lever arm 14 (cf. Figure 4 ).

[0059] A nut 54 is rotatably mounted on the base section 20 of the base part 12 about a rotation axis 56, wherein the rotation axis 56 is oriented orthogonally to the central longitudinal plane 20' of the base section 20 (cf. Figure 3 and 4 The joint axis 34 is located at a smaller distance from the pivot axis 56 of the nut 54 than the pivot axis 18 of the lever arm 14 (cf. Figure 4(Nut 54 is omitted here for clarity). The nut 54 can be screwed to the base section 20 of the main part using screws 57 and a retaining part 58. A threaded pin 59 can be screwed into the nut 54, e.g., for adjustment purposes.

[0060] A gearbox 60 is arranged on the base part 12 between the nut 54 and the wall section 22, via which the lever arm 14 is coupled to the nut 54. Thus, when the lever arm 14 pivots about the pivot axis 18, the gearbox 60 drives the nut 54 to rotate about its axis of rotation 56.

[0061] The transmission 60 has a first transmission element 62 which is rotationally fixed to the lever arm 14 (see Figure 2 and 3The gearbox 60 also has a second gearbox element 64, which is pivotably mounted about a further pivot axis 66 on the wall section 22 of the base part 12 and engages on one side with the first gearbox element 62 and on the other side with the nut 54 via a toothing or a projection.

[0062] The further pivot axis 66 is defined by a pin 67 on the wall section 22 of the base part 12 (see Figure 2 and 3 ), on which the second gear element 64 is rotatably mounted and secured by means of a retaining ring 68.

[0063] The second gear element 64 (large gear segment) can be replaced by a replacement piece 65 (small gear segment). In this way, it is possible to change the gear element in the unactuated state (cf. Figure 4 ) the distance of the handle 16 to the mounting side 23 or to the surface of a wing 204 varies (installation of the replacement piece 65 results in a smaller distance).

Claims

1. Actuating unit (10) for a panic exit device (100), comprising a base part (12) comprising at least one base section (20), a lever arm (14), and a handle (16), wherein the base part (12) has a bearing point (17) at which the lever arm (14) is pivotably mounted at one end about a pivot axis (18) and is pivotable between an unactuated position and an actuated position, wherein the lever arm (14) is connected at the other end to the handle (16), characterized by the fact thatthe lever arm (14) has a cavity (24) wherein a guide element (26) and a spring element (28) guided by means of the guide element (26) are arranged in the cavity (24), wherein the guide element (26) has a contour (30) at its end facing the base part (12) which rests against a counter contour (32) formed on the base part (12), wherein the counter contour (32) is fixed to the base part (12), wherein the contour (30) and the counter contour (32) define a joint whose joint axis (34) is arranged eccentrically to the pivot axis (18) of the lever arm (14), wherein the spring element (28) holds the lever arm (14) in the unactuated position and must work against the force of the spring element (28) when the handle (16) is actuated in the direction of the actuated position.

2. Actuating unit (10) according to claim 1, characterized by the fact thatthe spring element (28) is designed as a coil spring (29) and the guide element (26) is guided through the interior of the spring.

3. Actuating unit (10) according to claim 2, characterized by the fact that the guide element (26) has a shoulder (40) at which the guide element (26) transitions from a first cross-section (28') which passes through the interior of the spring to a second cross-section (28'') which extends over the coils of the coil spring (29), so that the shoulder (40) forms a stop for the coil spring (29).

4. Actuating unit (10) according to claim 2 or 3, characterized by the fact that in the cavity (24) a projection (46) protrudes which has a passage (48) through which the guide element (26) extends, the coil spring (29) bearing against one side (49) of the projection (46) so that the projection (46) forms a further stop for the coil spring (29).

5. Actuating unit (10) according to claim 4, characterized by the fact thatthe projection (46) is angled towards the coil spring (49) at least on the side (49) facing the coil spring (29), so that the coil spring (29) is secured in the cavity (24).

6. Actuating unit (10) according to one of the preceding claims, characterized by the fact that the guide element (26) extends in an arc shape at least in the area where the spring element (28) and the guide element (26) overlap.

7. Actuating unit (10) according to one of the preceding claims, characterized by the fact that the base section (20) of the base part (12) has a central longitudinal plane (20'), wherein the pivot axis (18) of the lever arm (14) and the joint axis (34) are oriented parallel to each other and to the central longitudinal plane (20') of the base section (20), wherein the joint axis (34) is a smaller distance to the central longitudinal plane (20') of the base section (20) than the pivot axis (18) of the lever arm (14).

8. Actuating unit (10) according to one of the preceding claims, characterized by the fact that a nut (54) is rotatably mounted on the base section (20) of the base part (12) about an axis of rotation (56), wherein the axis of rotation (56) is oriented orthogonally to the central longitudinal plane (20') of the base section (20), and wherein the pivot axis (34) is a smaller distance from the axis of rotation (56) of the nut (54) than the pivot axis (18) of the lever arm (14).

9. Actuating unit (10) according to one of the preceding claims, characterized by the fact that the contour (30) of the guide element (26) is convexly rounded and the counter contour (32) on the base part (12) is concavely rounded.

10. Panic door lock (100) for locking and / or unlocking a pivoting door or window sash (204) on a door or window frame (202), with an actuating unit (10) according to one of the preceding claims.

11. Panic door lock (100) according to the preceding claim, characterized by the fact thata locking device (102) with at least one locking element (104) is provided, wherein the locking device (102) is coupled to the actuating unit (10) in such a way that the locking element (104) can be actuated by means of the actuating unit (10).

12. Panic door lock (100) according to the preceding claim, characterized by the fact that a strike plate (106) is provided with which the locking element (104) of the locking device (102) can be engaged.

13. Door or window arrangement (200) comprising a frame (202), a sash (204) pivotally mounted on the frame (202) and a panic door lock (100) according to one of the three preceding claims.

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