EP0567491A1

EP0567491A1 - Actuator drive for a window or door fitting

Info

Publication number: EP0567491A1
Application number: EP92902311A
Authority: EP
Inventors: Dieter Renz; Jürgen BUSALSKI
Original assignee: Aug Winkhaus GmbH and Co KG
Current assignee: Aug Winkhaus GmbH and Co KG
Priority date: 1991-01-14
Filing date: 1992-01-14
Publication date: 1993-11-03
Also published as: JPH06504340A; WO1992012317A1; DE4100882A1

Abstract

L'actionneur conçu pour une ferrure de fenêtre ou de porte comprend un moteur électrique (3) entraînant par l'intermédiaire d'un dispositif à blocage automatique, par exemple un engrenage à vis sans fin auto-bloquant (25), un train planétaire, avantageusement à plusieurs étages (5), qui est accouplé, à sa sortie, à une broche (7) d'entraînement de la ferrure de la fenêtre ou de la porte. Le premier étage (37) du train planétaire (5) comprend une roue à denture intérieure (47) entraînée par le moteur électrique (3) par l'intermédiaire du dispositif à blocage automatique, un planétaire (51) entraîné par une manivelle (11), et un porte-satellites (61) associé fonctionnellement à la broche d'entraînement (7), le cas échéant par l'intermédiaire d'autres étages planétaires (39), dont les satellites (57) viennent en prise avec le planétaire (51) et la roue à denture intérieure (47). La manivelle (11) est repliable et, en sa position de repos associée au fonctionnement du moteur, immobilise le planétaire (51) par rapport à un élément-support (1) du servomoteur. Pour le passage en fonctionnem ent manuel, il suffit de placer la manivelle (11) en sa position de fonctionnement, ce qui libère le planétaire (51). Le dispositif à blocage automatique (25) assure dès lors automatiquement le blocage de la roue à denture intérieure (47). Le servomoteur peut ainsi être facilement utilisé et ne nécessite aucun système d'embrayage dans la chaîne cinématique.The actuator designed for a window or door fitting comprises an electric motor (3) driving via a self-locking device, for example a self-locking worm gear (25), a planetary gear , advantageously with several stages (5), which is coupled, at its outlet, to a spindle (7) for driving the fitting of the window or the door. The first stage (37) of the planetary gear (5) comprises an internal gear (47) driven by the electric motor (3) by means of the automatic locking device, a planetary (51) driven by a crank (11 ), and a planet carrier (61) functionally associated with the drive spindle (7), if necessary by means of other planetary stages (39), the satellites (57) of which engage the planetary (51) and the internal gear (47). The crank (11) is foldable and, in its rest position associated with the operation of the motor, immobilizes the sun gear (51) relative to a support element (1) of the booster. For switching to manual operation, it suffices to place the crank (11) in its operating position, which frees the sun gear (51). The automatic locking device (25) therefore automatically locks the internal gear (47). The servomotor can thus be easily used and does not require any clutch system in the kinematic chain.

Description

ACTUATOR FOR A WINDOW OR DOOR FITTING

The invention relates to an actuator for a window or door fitting or the like, with an electric motor that drives an output element that can be coupled to the window or door fitting via a planetary gear, with a manually operable handling part that drives the output element independently of the electric motor, and with a carrier uniting the electric motor, the planetary gear, the output member and the handling part to form a structural unit, the planetary gear comprising the following components: an externally toothed sun gear, an internally toothed ring gear and at least one rotatably mounted on a planet gear carrier with the planet gear meshing with the sun gear and the ring gear.

From DE-A-32 23 808 it is known to integrate an additional electromotive actuator into the handle provided for the manual actuation of a window with a tilt and turn fitting. The actuator comprises, for example, a geared motor equipped with a planetary gear, the output shaft of which at the same time forms the pivot axis of the handle and with the Espagnolette system of the turn-tilt fitting is coupled. The reaction torque of the electric motor is conducted via the handle into a mounting plate attached to the sash frame of the window. For the manual operation of the turn-tilt fitting, a pin coupling that couples the handle to the fastening plate in a rotationally fixed manner must first be released by lifting the handle before the handle can be turned.

A variant of an actuator integrated in a window handle for a window with a tilt and turn fitting is known from DE-A-39 15 569. With this actuator, an electric motor rotates a driven mandrel of the window handle via a spindle drive and a rack and pinion gear. The window handle, which can be swiveled coaxially with the driven mandrel for manual actuation of the window fitting, is locked on the casement by means of a locking button for motor operation. Before the handle can be pivoted manually, the locking button must be actuated.

The two actuators described above have in common that the handle provided for manual actuation must be unlocked before it can be operated. The unlocking process does not follow from the usual way of operating the handle, which can make handling more difficult in individual cases. In addition, the electric motors in both actuators are integrated in the handle, which is therefore comparatively large. For a large number of applications in which the electromotive operation is the rule and manual operation, such as in emergency situations or a defect in the actuator, are the preferred actuators that are installed stationary on the window or door to let. The manually operated handling part, however, should be as small or inconspicuous as possible.

An actuator to be mounted stationary on the sash of a window or door is known from DE-A-38 24 531. In this actuator, a high-speed low-voltage electric motor drives a drive rod pinion of the window or door fitting via a multi-stage spur gear. For the manual actuation of the fitting, a claw coupling is provided between the multi-stage spur gear and the drive rod pinion, via which the drive rod sprocket can be coupled from the multi-stage spur gear and with a hand lever. But also here to switch the claw clutch the hand lever must first be pressed before its pivoting movement acts on the drive rod pinion.

It is an object of the invention to provide an actuator for a window or door fitting, which can be connected to the window or door in a stationary manner and which can nevertheless be operated very easily.

Starting from the actuator described above, this object is achieved according to the invention in that the components ring gear, sun gear and planet carrier are all rotatably mounted relative to one another and relative to the carrier part about a common axis of rotation, that the electric motor is in constant drive connection with a first of these components Handling part is in constant drive connection with a second of these components and a third of these components is in constant drive connection with the output member, that the first component is further coupled to a self-locking device which controls the drive connection between the electric motor and the first component for the Rotary drive blocked from the first component and that the second component can be blocked relative to the carrier part in a rest position of the handling part.

Such an actuator is particularly suitable for applications in which the electromotive actuation of the window or door fitting is the rule and the manual actuation is the exception. The support part of the actuator carrying the electric motor can be firmly connected to the window or door, and the handling part can accordingly be made small and, if necessary, inconspicuous. In the drive connection between the driven member to be coupled with the window or door fitting and the electric motor on the one hand and the handling part on the other hand, no mechanical couplings, such as claw couplings or the like, are provided, which particularly benefits the operational safety of the actuator comes and also facilitates the detection of end positions of the actuator. Last but not least, the absence of such switchable clutches in the drive path simplifies the design and allows the actuator to be constructed in a particularly compact manner, even when gearboxes with high gear ratios are used.

The planetary gear is expediently designed as a reduction gear, at least for the drive path leading from the electric motor to the output member, in order to make do with a comparatively small electric motor. However, a planetary gear is preferred which has a reducing effect both in the drive connection of the electric motor and in the drive connection of the handling part. In this case, the output element is connected to the planet gear carrier in a drive connection. The construction is particularly used in the latter embodiment fold, when the electric motor is in drive connection with the ring gear and the handling part with the sun gear.

The self-locking device acting in the actuator according to the invention on the drive connection of the electric motor ensures that the component of the planetary gear coupled to the electric motor automatically receives the reaction torque of the planetary gear during manual operation. The self-locking device can be a brake which is automatically released on the electric motor in the manner of a brake motor when the motor is switched on. Embodiments are simpler in which the electric motor is in drive connection with the planetary gear via a self-locking gear, in particular a self-locking worm gear. Such a gearbox can also be used to reduce the engine speed.

In a preferred embodiment, the handling part is a crank which can be locked on the carrier part. The crank can be used directly to drive the planetary gear, in particular if it is mounted on the carrier part coaxially with the axis of rotation of the components of the planetary gear and acts on the component of the planetary gear assigned to its drive path without an additional intermediate gear.

In an expedient embodiment, the crank comprises a base part rotatably mounted on the carrier part and a foldable handle part mounted on the base part, which in its rest position locks the base part in a rotationally fixed manner on the carrier part. If the handle part is folded about the folding axis from its rest position into the operating position, the reaction torque is simultaneously that in motor operation of the planetary gear locking mechanism released, which considerably simplifies the manual operation of the actuator.

Operating errors are particularly reliably ruled out if the handle part is designed as a crank arm articulated on the base part by means of a folding joint, which has at its end remote from the folding joint a handle pin which projects transversely to the folding axis and which, when the crank arm is at rest, points towards the housing protrudes and engages in a locking recess in the carrier part. In the rest position, the handle pin is covered. The handle pin is only exposed when the crank arm is folded down for manual actuation of the actuator. At the same time and inevitably, the locking is thereby released.

Alternatively, the second component of the planetary gear in the rest position of the handling part relative to the carrier part can also be blocked in that the second component is connected to the carrier part via a torque limiting device. The torque limiting device, which can be, for example, a snap-in clutch or a slip clutch or the like, is dimensioned such that reaction torques originating from the electric motor are supported on the carrier part. In the case of manual actuation, on the other hand, a torque is exerted via the handling part which is above the limit value of the torque limiting device, with which the second component of the planetary gear can be rotated manually. The above variant not only has the advantage that it can be operated without special manipulation of the handling part, it also has the advantage that a handle element of the handling part can optionally be removed, so that unauthorized manual actuation of the actuator can be prevented.

The planetary gear can be a single-stage gear, but preferably a plurality of planetary gear stages connected to one another are provided, each of which comprises as components an externally toothed sun gear, an internally toothed ring gear and a planet gear carrier, on which at least one with the sun gear and the ring gear meshing planet wheel is rotatably mounted. The electric motor and the handling part are in drive connection with the first planetary gear stage. In this embodiment, too, the planet gear carrier of the first planetary gear stage forms the gear output of the gear stage, the planet gear carrier being expediently coupled directly to the sun gear of the subsequent, second planetary gear stage. The second planetary gear stage also has a step-down effect if, what is preferred, its planet gear carrier is directly coupled to the output element.

A two-stage planetary gear of the construction explained above can be constructed particularly simply if the carrier part for receiving the planetary gear contains an essentially cylindrical chamber which is axially delimited by end walls. The sun gear of the first planetary gear stage and the handling part rotatably connected to this sun gear can then be rotatably mounted on a first of the end walls, while on a second of the end walls the planet gear carrier of the second planetary gear stage and the output gear rotatably connected to this planet gear carrier is rotatably mounted. The ring gear of the first planetary gear stage expediently additionally has an external connection for the drive connection to the electric motor. teeth and is axially guided between the first end wall and an annular shoulder of the chamber projecting inward at a distance from the first end wall, while the ring gear of the second planetary gear stage is arranged in the chamber in a rotationally fixed manner. In the latter embodiment, the sun gear of the second planetary gear stage is connected in a rotationally fixed manner to the planet gear carrier of the first planetary gear stage. The planet gear carrier of the first gear stage can be rotatably mounted on a fixed intermediate wall of the chamber. The construction, on the other hand, becomes particularly simple if the planet gear carrier of the first planetary gear stage, including the sun gear of the second planet gear stage, are arranged axially loosely between the first end wall and the planet gear carrier of the second planet gear stage. At most, sliding disks can be inserted between the planet gears and the planet gear carrier or the end walls to reduce wear.

In the aspect of the invention explained above, the electric motor and the handling part act on various components of the planetary gear. A second aspect of the invention relates to an actuator of the type described at the outset, in which the electric motor and the handling part provided in particular for emergency operation act on the same component of the planetary gear. Under this second aspect, too, it is the aim of the invention to provide an actuator for a window or door fitting which can be connected to the window or door in a stationary manner and yet can be operated very easily. As will become clear below, the second aspect of the invention allows particularly simple actuator designs. For this purpose, it is provided that the electric motor and the handling part are in constant drive with a first of the components of the planetary gear. Connection is established and the electric motor is coupled to a self-locking device which blocks the drive connection between the electric motor and the first component for the rotary drive from the first component. A second component of the planetary gear is locked in a rotationally fixed manner relative to the carrier part, and a third of the components of the planetary gear is in constant drive connection with the output element. A torque limiting device is additionally arranged in the drive path of the electric motor between the self-locking device and the first component of the planetary gear. The torque limiting device, which can again be a snap-in clutch or a slip clutch or the like, transmits the drive torque of the electric motor to the first component of the planetary gear, in particular to its sun gear, which due to its central arrangement is particularly good for the manual one Drive is suitable. In the case of manual actuation, on the other hand, the torque exerted by the handling part on the sun gear exceeds the limit value, so that the sun gear can be rotated manually against the self-locking effect of the self-locking device. It goes without saying that the self-locking device in this variant of the invention only has to apply an inhibiting torque which is above the limiting torque of the torque limiting device, and therefore does not have to be designed to be completely locking.

Also in the actuator according to the second aspect of the invention, the planetary gear ger advantageously forms the third component of the planetary gear which is in drive connection with the output member. The first component can be the ring gear, but expediently it is the sun gear. The self-locking device is again moves around a self-locking gear, especially a self-locking worm gear.

Limit switches are generally assigned to the electric motor of an actuator of the type described at the beginning, by means of which limit switches the electric motor can be stopped in the end positions. It could be considered to have the limit switches actuated by the linkage of the window or door fitting to be moved by the actuator. However, such limit switches must be installed separately, and the accuracy with which the electric motor can be controlled via such limit switches also leaves much to be desired.

In a third aspect, the aim of the invention is to provide an actuator for a window or door fitting which, with a comparatively small amount of construction parts and a small space requirement, permits position detection of the actuator, in particular for the control of the electric motor.

This goal is achieved in that at least one control disc, which is coupled in a rotationally fixed manner to the output element via a gear connection, is rotatably mounted on the carrier part, axially parallel to the output element, the circumference of which forms a cam track, and on the carrier part at least one assigned to the control disc, the cam track scanning control switch is arranged. The carrier part, the control disk and the control switch form a structural unit which can be adjusted precisely, in particular also to intermediate positions between the end positions of the output member. This is particularly important in the case of turn-tilt fittings, in which the servomotor is positioned in a tilt-open position in addition to a closed position and a rotational opening position - li ¬ must be stopped. The gearwheel connection between the output member and the control disk can be dimensioned to be stepped down, so that even relatively small angles of rotation of the output member can be assigned large control disk rotation angles.

The control disk can be arranged coaxially with the output element, but is preferably rotatably mounted about an axis of rotation arranged at a distance from the axis of rotation of the output element, in particular when a plurality of control elements which are arranged coaxially next to one another in the form of a stack are non-rotatably but releasably connected to one another discs are provided. The control disks, for example indexable against each other, can be adjusted individually and in steps in this way according to the application.

For the gear connection, an external toothing can be provided directly on the output component of the planetary gear, for example on the planet gear carrier, which meshes, optionally via intermediate gears, with a gear provided in a rotationally fixed manner on the control disk stack.

Exemplary embodiments of the invention are explained in more detail below with reference to a drawing. Here shows:

Figure 1 is a sectional view of an actuator for a window or door fitting.

2 shows a sectional view through the actuator, seen along a line II-II in FIG. 1,

3 shows a sectional view through the actuator, seen along a line III-III in FIG. 1,

4 shows a transmission diagram of a variant of the actuating drive from FIG. 1, 5 is a sectional view of a further actuator for a window or door fitting,

6 shows a sectional view through the actuator, seen along a line VI-VI in FIGS. 5 and

7 shows a sectional view through the actuator, seen along a line VII-VII in FIG. 5.

The actuator explained below is particularly suitable for controlling both the closing movement and the leaf movement, in particular of a window, for example with a tilt and turn fitting. The fitting can be faceplate fittings or push rod fittings or the like.

The actuator shown in the figures comprises, combined on a multi-part carrier part 1 to form a structural unit, an electric motor 3 which, via a two-stage planetary gear 5, drives an output mandrel 7, for example a square mandrel, which can be coupled to the window fitting. The output mandrel 7 is coupled in the usual way to the window fitting, for example via an espagnolette indicated at 9. Independently of the electric motor 3, the drive mandrel 7 can also be driven manually via the planetary gear 5 by means of a hand crank 11, for example if the electromotive drive fails.

The electric motor 3 is a high-speed, preferably speed-controlled, low-voltage electric motor which is mounted on a mounting plate 13 of the carrier part for reducing noise in rubber bearings (not shown). The electric motor 3 drives a self-locking worm gear 17 via a reduction gear 15, the worm 19 of which is on a gear base 21 designed as a molded part of the carrier part 1 is mounted and coupled to an output shaft 23 of the reduction gear 15. A worm gear 25 meshes with the worm 19, which, together with a spur gear 27, sits in a rotationally fixed manner on a common axle part 31 which is rotatably mounted in the gear base 21 and a cover part 29 of the gear base 21. Intermeshing with the spur gear 27 is an intermediate gear 33 which is rotatably mounted axially parallel to the axle part 31 on an axis 35 in the gear base 21 or the cover part 29. The intermediate gear 33 in turn drives the planetary gear 5.

The planetary gear 5 has two planetary gear stages 37 and 39 which are connected to one another in drive connection and which are arranged coaxially with the drive mandrel 7 and with the axis of rotation of the hand crank 11 in an essentially cylindrical chamber 41 of the base part 21. The chamber 41 is closed off in the axial direction by end walls 43, 45 of the gear base 21 or of the cover part 29.

The first gear stage 37 comprises an internally toothed as well as externally toothed ring-shaped ring gear 47, which is guided radially from the peripheral wall of the chamber 41 and axially from the cover part 29 and an annular shoulder 49 provided in the chamber 41 at a distance from the cover part 29 becomes. The ring gear 47 meshes with its external toothing with the intermediate gear 33. Coaxial with the ring gear 47, a sun gear 51 is attached to a drive plate 53 in a rotationally fixed manner, for example in a press fit. The driving disk 53 abutting the end wall 45 in the chamber 41 is rotatably mounted on the cover part 29 with an extension 55 extending through the cover part 29 and carries the crank handle 11. Three mesh with the sun gear 51 and the internal toothing of the ring gear 47 Planetary gears 57 arranged offset from one another with respect to angle, which are rotatably mounted on axles 59 extending axially parallel to the sun gear 51 of an otherwise disk-shaped planet gear carrier 61 arranged on the side of the sun gear 51 remote from the driver. The planet gear carrier 61 is in turn coaxial and rotatable relative to the sun gear 51 and the ring gear 47.

In the planetary gear carrier 61 of the first gear stage 37, a sun gear 63 of the second gear stage 39 is held non-rotatably, for example in a press fit. Coaxial with the sun gear 63 is an internally toothed ring gear 65 in the chamber 41. The sun gear 63 and the ring gear 65 are meshed with three planet gears 67, which are arranged at an angular offset from one another, and which on axially parallel to the sun gear 63 are arranged a journal 69 of an otherwise essentially disk-shaped tarpaulin tenradträger 71 are rotatably mounted. The planetary gear carrier 71 lies against the end wall 43 of the chamber 41 and is coupled to the drive mandrel 7 in a rotationally fixed manner via a square pin 73. The drive mandrel 7 is in turn rotatably mounted in the transmission base 21 via a collar 75.

The planet gear carriers 61, 71 are loosely inserted into the chamber 41 in the axial direction and are fixed by the sun gears 51, 63 or the axle journals 59, 69 or the planet gears 57, 67 mounted thereon. It is understood that sliding disks or the like can be inserted between the parts rotating relative to one another to reduce wear.

The hand crank 11 comprises a base part 77 which is circular in plan view and which is rotatably connected via a square pin 79 into the shoulder 55 of the drive plate 53 engages and is attached to it by means of a screw 81. On the outside of the base part 77, a crank arm 85 is articulated in a folding joint 83 such that it can be pivoted about a pivot axis running transversely to the axis of rotation of the planetary gear mechanism 5. The crank arm 85 carries at its end remote from the hinged joint 83 a handle pin 87 which, when the crank arm 85 is in a rest position folded over the base part 77, projects toward the planetary gear 5 and engages through an opening 89 in the base part 77 into a latching recess 91 provided in the cover part 29 . 1, the crank arm 85 blocks the sun gear 51 of the first gear stage 37 relative to the carrier part 1.

In the rest position of the crank arm 85, the drive path of the electric motor 3 to the drive mandrel 7 is closed. The torque of the electric motor 3 is transmitted via the reduction gear 15, the worm gear 17, the gears 27, 33 to the ring gear 47 of the first planetary gear stage 37. The planet gears 57, which are supported on the sun gear 51 in a rotationally fixed manner with the carrier part 1, transmit the torque to the planet gear carrier 61 and thus to the rotating sun gear 63 of the second planetary gear stage 39. The planet gears 67 of the second gear, which are firmly connected to the gear base 21, are supported Gear stage 39 transmit the torque via the planet gear carrier 71 to the output mandrel 7. Both gear stages have a reducing effect.

For emergency operation, the crank arm 85 of the hand crank 11 is folded down into the position shown in dashed lines in FIG. 1, in which the handle pin 87 protrudes away from the planetary gear 5. The sun gear 51 blocked for motor operation can now be freely rotated via the hand crank 11 are driven. On the other hand, due to the self-locking properties of the worm gear 17, the ring gear 47 is automatically blocked for the reaction torque exerted by the planet gears 57, so that the drive torque of the crank handle 11 is now supported via the sun gear 51 and the ring gear 47 which is now blocked zenden planet gears 57 to the planet gear carrier 61 and from there via the second gear stage 39 to the output pin 7 is passed. Both gear stages 37, 39 also have a step-down effect for manual operation.

Since the drive torque of the electric motor 3 and the drive torque of the hand crank 11 are introduced into different components of the first planetary gear stage 37, no clutch within the gear path is required to switch between motor operation and manual operation. To switch from motor operation to manual operation, only the hand crank 11 has to be folded out of its rest position, folded toward the base part 77, in which its handle pin 87 is covered, into the operating position, in which the handle pin 87 is accessible. The transition from engine operation to manual operation and vice versa is very easy. Since the crank handle 11 also drives the output mandrel 7 via the planetary gear 5, it can be kept small, so that it can be optically appended to a protective housing 93 surrounding the actuator.

In order to prevent unauthorized manual opening, a lock can be assigned to the hand crank 11, which locks the crank arm 85 in the rest position. Furthermore, the second gear stage 39 of the planetary gear 5 may be omitted, or additional planetary gear stages may be provided if necessary. Fig. 4 shows a variant of the actuator of Figs. 1 to 3, which differs from this actuator primarily by the type of blocking the manual operating part during engine operation and also has a single-stage planetary gear. In FIG. 4, components of the same function and design are designated with the reference numerals of FIGS. 1 to 3 and provided with the letter a to distinguish them. For explanation, reference is made to the description of FIGS. 1 to 3. Components 9, 13, 15, 21, 23, 29, 31, 37, 49, 53, 55 and 59 are not shown, but are present. Components 33, 35, 39 to 45, 63 to 75 and 77 to 91 are missing, but may be present.

The planetary gear 5a corresponding to the first gear stage 37 of the actuator of FIGS. 1 to 3 in turn comprises a ring gear 47a, a sun gear 51a and a planet gear carrier 61a which is non-rotatably connected to a drive mandrel 7a, the three of which are connected to both the ring gear 47a and the sun gear 51a intermeshing planet gears 57a. The ring gear 47a is driven by an electric motor 3a via a self-locking worm gear 17a consisting of a worm 19a and a worm gear 25a and at least one spur or intermediate gear 27a. The sun gear, which can be rotated coaxially with the ring gear 47a, is rotatably blocked via a torque limiting device 94, for example in the form of a latching clutch or a slip clutch on the carrier part 1 a, for torques which are below the triggering torque of the torque limiting device 94. The torque limiting device 94 can thus absorb the reaction torque of the sun gear 51a originating from the electric motor 3a when driving the drive mandrel 7a.

The sun gear 51a is, especially for emergency operation of the actuator, rotatably connected to a handling part 11a, for example in the form of a crank. When the actuator is operated manually, the limiting torque of the torque limiting device 94 is exceeded, so that the drive mandrel 7a is driven by the sun gear 51a via the planetary gear 5a. The self-locking properties of the worm gear 17a block the ring gear 47a on the carrier part 1a.

The handle part of the handling part 11a, for example designed as a crank, is detachably coupled to the sun gear 51a via a plug-in rotary coupling 95, so that the actuator is secured against unauthorized manual operation when the hand crank is removed.

5 to 7 show an alternative of an actuator for controlling both the closing movement and the sash movement of a window, for example a window with a tilt and turn fitting. The actuator in turn comprises, on a multi-part support part 101, combined to form a structural unit, an electric motor 103 which, via a planetary gear 105, rotates an output mandrel 107, for example a square mandrel, which can be coupled to the window fitting. The output mandrel 107 is coupled in a conventional manner to the window fitting, for example via a drive pinion indicated at 109. Independently of the electric motor 103, the drive mandrel 107 can also be driven manually via the planetary gear 105 by means of a handling part 111 in emergencies, for example if the electric motor 103 fails. The handling part 111 can comprise a hand crank 112, which can be removed if necessary.

The electric motor 103 is in turn a high-speed, preferably rotating Number-controlled low-voltage electric motor, which drives a self-locking worm gear 117 via a multi-stage reduction gear 115, the worm 119 of which is mounted on a gear base 121 of the carrier part 101 and is coupled to the reduction gear 115. A worm gear 125 meshes with the worm 119, which, together with a spur gear 127, each rotatably rests on a common axle part 131 which is rotatably mounted in the gear base 21 and a cover part 129 of the gear base 121. Intermeshing with the spur gear 127 is an idler gear 133, which is rotatably mounted axially parallel to the axle part 131 on an axis 135 in the gear base 121 or the cover part 129. The intermediate gear 133 in turn drives the planetary gear 105 in a manner to be explained in more detail below.

The planetary gear 105 comprises an internally toothed ring gear 137, which is non-rotatably and preferably integrally connected to the gear base 121, a coaxially arranged in the ring gear 137 sun gear 139 and three offset by 120 ° to each other, both with the ring gear 137 and the sun gear 139 meshing Planet gears 141, which in turn are rotatably supported on axle journals 143 of a planet gear carrier 145 rotatably mounted in the carrier part 101 coaxially with the sun gear 139. The drive mandrel 107 is located coaxially with the sun gear in the planetary gear carrier 145.

On the side of the planet gears 141 axially facing away from the planet gear carrier 145, a snap-in coupling 147 is arranged coaxially with the sun gear 139, the external toothed input ring 149 thereof, which can be rotated relative to the sun gear 139, with the intermediate gear following the worm gear 117 in the drive path of the electric motor 103 133 combs. Coaxial in the input ring 149 is one with the sun gear 139 rotatably connected driver part 151 is arranged, which is rotatably mounted with an extension 153 in the cover part 129 and is axially supported on the cover part 129 with an annular shoulder 155. The driver part 151 carries, distributed in the circumferential direction, a plurality of latching elements, for example balls 157, which are preloaded radially outward and which snap into associated latching recesses 159 on the inner circumference of the input ring 149. The locking clutch 147 can only transmit a limited torque from the input ring 149 to the driver part 151 and forms a safety clutch in the path of the electric motor 103 to the output mandrel 107. The hand crank 112 can be inserted into a polygonal opening 161 of the driver part 151 from the outside.

In normal operation, the electric motor 103 drives the output mandrel 107. The torque of the electric motor 103 is transmitted to the sun gear 139 via the reduction gear 115, the worm gear 117, the gears 127, 133 via the snap-in coupling. The planet gears 141 supported on the ring gear 137, which is connected to the carrier part 101 in a rotationally fixed manner, transmit the torque to the planet gear carrier 145 and thus to the output mandrel 107. The planetary gear 105 has a reducing effect here.

For emergency operation, the crank handle 112, which is normally removed to secure against unauthorized actuation of the actuator, is inserted into the polygonal opening 161. The sun gear 139 can now be rotated by hand for emergency operation, the torque applied in this way overcoming the locking clutch 147 and being conducted to the output mandrel 107 via the step-down planetary gear 105.

To control the electric motor 103 are the side of the Planetary gear 105 arranged on the carrier part 101, a plurality of control switches 163, which scan cam tracks 167 provided on the circumference of assigned control disks 165. The control disks are rotatably mounted coaxially on an axle 169 held parallel to the planetary gear 105 on the carrier part 101 and are connected to one another in a rotationally fixed manner relative to one another via index pins 171 or other indexing means with an angular position that can be changed in steps. In this way, the control disks 165 can be adjusted in their angular position relative to one another. In the plane of the planet gear carrier 145, a gear 173, which is rotatably coupled to the stack of the control disks 165, is mounted on the axle journal 169 and meshes via an intermediate gear 175 with an external toothing 177 provided on the circumference of the planet gear carrier. The control disk stack thus follows the rotational movement of the driven mandrel 107 in translation. Since more than two control disks 165 are provided, intermediate positions of the driven mandrel can also be detected, as are the case, for example, with tilt and turn fittings, which can be switched between a closed position, a tilted open position and a rotary open position . It goes without saying that the control switches 163 can also be used for further functions, for example for alarm functions in the event of unauthorized manual actuation of the actuator.

The planetary gear 105 has only one gear stage. It goes without saying that multi-stage planetary gears can also be used. In addition, the drive torque of the electric motor 103 and the hand crank 112 can also be introduced into the ring gear 137, which is then rotatably mounted instead of into the sun gear 139 if, in return, the sun gear is blocked relative to the carrier part 101. It is also understood that control discs and control switches of the type explained above can also be used in the actuator of FIGS. 1 to 4, where the control disk stack can be driven either from the first gear stage or the second gear stage of the planetary gear.

Claims

PATENT CLAIMS

1. Actuator for a window or door fitting or the like, with an electric motor (3) which, via a planetary gear (5), drives an output member (7) that can be coupled to the window or door fitting, with one of the output member (7) independently of the electric motor (3) driving, manually operable handling part (11) and with a supporting part uniting the electric motor (3), the planetary gear (5), the driven member (7) and the handling part (11) into a structural unit

(1 ⁾ , the planetary gear (5) comprising the following components: an externally toothed sun gear (51), a coaxial internally toothed ring gear (47) and at least one rotatably mounted on a planet gear carrier (61) with the sun gear (51) and the ring gear (47) meshing planet gear (57), characterized in that the components ring gear (47), sun gear (51) and planet gear carrier (61) are all rotatably mounted relative to one another and relative to the carrier part (1) about a common axis of rotation, that the Electric motor (3) with a first (47) of these components is in particular a constant drive connection, the handling part (11) with a second one

(51) of these components is in constant drive connection and a third (61) of these components is in constant drive connection with the output element (7) that the first component (47) is also connected to a inhibiting device (17) is coupled, which blocks the drive connection between the electric motor (3) and the first component (47) for the rotary drive from the first component (47) and that the second component is in a rest position of the handling part ( 11) can be blocked relative to the carrier part (1).

2. Actuator according to claim 1, characterized in that the output member (7) with the planet carrier (61) is in drive connection.

3. Actuator according to claim 2, characterized in that the electric motor (3) with the ring gear (47) and the handling part (11) with the sun gear (51) is in drive connection.

4. Actuator according to one of claims 1 to 3, characterized in that the electric motor (3) via a self-locking gear, in particular a self-locking worm gear (17) with the first component (47) of the planetary gear (5) in Drive connection is.

5. Actuator according to one of claims 1 to 4, characterized in that the handling part is designed as a lockable on the carrier part crank (11).

6. Actuator according to claim 5, characterized in that the hand crank (11) a rotatably mounted on the carrier part (1) base part (77) and a foldable on the

Base part (77) comprises mounted handle part (85, 89) which, in its rest position, locks the base part (77) in a rotationally fixed manner on the carrier part (1).

7. Actuator according to claim 6, characterized in that the handle part (85, 89) as on the base part (77) by means of a folding joint (83) articulated crank arm

(85) is formed, which at its end remote from the folding joint (83) carries a handle pin (89) projecting transversely to the folding axis, which projects in the rest position of the crank arm (85) towards the carrier part (1) and into a locking recess (91) of the carrier part (1) engages.

8. Actuator according to one of claims 1 to 7, characterized in that the second component (51a) of the planetary gear (5a) for blocking the handling part (11a, 95) in its rest position via a torque limiting device (94) with the Träger¬ part (la) is connected.

9. Actuator according to one of claims 1 to 8, characterized in that the planetary gear (5) comprises several planetary gear stages (37, 39) in drive connection with each other, each of which as a component an externally toothed sun gear (51, 63) internally toothed ring gear (47, 65) and a planet gear carrier (61, 71) on which the planet wheel (57, 67) meshing with the sun gear (51, 63) and the ring gear (47, 65) is rotatably mounted, comprises that a first (37) of the planetary gear stages comprises the first (47) and second (51) components which are in drive connection with the electric motor (3) and the handling part (11) and that the third component (61) of the first planetary gear gear stage (37) via at least one further (39) of the planetary gear stages in drive connection with the output member (7).

10. Actuator according to claim 9, characterized in that the planetary gear ger (61) of the first planetary gear stage (37) is directly coupled to the sun gear (63) of a second planetary gear stage (39) following in the drive path.

11. Actuator according to claim 10, characterized in that the output member (7) with the planet carrier (71) of the second planetary gear stage (39) is in drive connection and the ring gear (65) of the second planetary gear stage (39) rotatably with the carrier part ( 1) is connected.

12. Actuator according to one of claims 9 to 11, characterized in that the carrier part (1) for receiving the planetary gear (5) contains an inside essentially cylindrical, by end walls (43, 45) axially delimited chamber (41) that on a first of the end walls (45), the sun gear (51) of the first planetary gear stage (37) and the handling part (11) rotatably connected to this sun gear (51) are rotatably mounted such that the ring gear (47) of the first planetary gear stage (37 ) for the drive connection to the electric motor (3) additionally has external teeth and is axially guided between the first end wall (45) and an annular shoulder (49) projecting inwards at a distance from the first end wall (45), that on a second ( 43) of the end walls of the planetary gear carrier (71) of a second planetary gear stage (39) and the output member (7) connected to this planetary gear carrier (71) in a rotationally rotatable manner and that the ho idler gear (65) of the second planetary gear stage (39) is arranged in a rotationally fixed manner in the chamber (41).

13. Actuator according to claim 12, characterized in that the sun gear (63) of the second planetary gear stage (39) with the planet carrier (61) of the first planetary gear stage (37) rotatably connected and axially loosely between the first end wall (45) and the Planet gear carrier (71) of the second planetary gear stage (39) is arranged.

14. Actuator for a window or door fitting or the like, with an electric motor (103) which, via a planetary gear (105), drives an output member (107) that can be coupled to the window or door fitting, with one of the output member (107) independently of the manually operable handling part (111) driving the electric motor (103) and with a supporting part () which unites the electric motor (103), the planetary gear (105), the driven element (107) and the handling part (111) to form a structural unit 101), the planetary gear (105) comprising the following components: an externally toothed sun gear (139), a coaxial internal toothed ring gear (137) and at least one rotatably mounted on a planet gear carrier (145), with the sun gear (139) and the ring gear (137) comb the planet gear (141), characterized in that the electric motor (103) and the handling part (111) with a first (139) of the components of the planetary gear (105) in there is in particular a constant drive connection and the electric motor (103) is coupled to a self-locking device (117) which connects the drive between the electric motor (103) and the first component (139) for the rotary drive of the The first component (139) is blocked so that a second (137) of the components of the planetary gear (105) is rotatably blocked relative to the carrier part (101) and a third (145) of the components of the planetary gear (105) is in constant drive connection with the output member (107) and that a torque limiting device (147) is arranged in the output path of the electric motor (103) between the self-locking device (117) and the first component (139) of the planetary gear (105).

15. Actuator according to claim 14, characterized gekennzeich¬ net that the output member (107) with the planet carrier (145) is in drive connection.

16. Actuator according to claim 15, characterized gekennzeich¬ net that the electric motor (103) and the handle part (111) with the sun gear (139) are in driving connection.

17. Actuator according to one of claims 14 to 16, characterized in that the electric motor (103) via a self-locking gear, in particular a self-locking worm gear (117) with the first component (139) of the planetary gear (105) is in drive connection.

18. Actuator according to one of claims 14 to 17, characterized in that the torque limiting device is designed as a locking coupling (147).

19. Actuator for a window or door fitting or The like, with an electric motor (103) which drives an output element (107) which can be coupled to the window or door fitting via a planetary gear (105), and a manually operable which drives the output element (107) independently of the electric motor (103) Handling part (111) and with a supporting part (101) uniting the electric motor (103), the planetary gear (105), the driven member (107) and the handling part (111), the planetary gear (105) following Components include: an externally toothed sun gear (139), a coaxial internal toothed ring gear (137) and at least one planet gear (141) rotatably mounted on a planet gear carrier (145) and meshing with the sun gear (139) and the ring gear (137) ), characterized in that on the carrier part (101) axially parallel to the driven member (107) at least one, in particular via a gear connection (173, 175, 177), non-rotatably coupled to the driven member (107) Control disc (165) is rotatably mounted, the periphery of which forms a cam track (167), and that at least one control switch (163), which controls the cam track (167) and scans the cam track (167), is arranged on the carrier part (101).

20. Actuator according to claim 19, characterized gekennzeich¬ net that a plurality of coaxially arranged next to each other, rotatably, but releasably interconnected control discs (165) are provided.

21. Actuator according to claim 19 or 20, thereby indicates that the output component (145) of the planetary gear (105) connected to the output member (107) has external teeth (177) for driving the control disk (165).

22. Actuator according to claim 21, characterized gekennzeich¬ net that the output member (107) with an external toothing (177) carrying planet gear (145) of the planetary gear (105) is rotatably connected.