EP1788179A2 - Actuator for a movable part - Google Patents

Abstract

Actuating device has an actuator which can be movably driven by the reversible motor drive. The actuator engages in a window blind recess, formed in movable part, extending along movement of movable part. The window blind recess has one length, which corresponds to the movement of the carrier between basic position and opening position or partial opening position. The carrier can be moved back with a distribution switchboard, after an adjustment drive of the movable part into open position by the motorized actuator into the basic position.

Description

The invention relates to an actuating device for a movable component, with a motor drive, by which the movable member is driven to move from a basic position to an open position, with a freewheel, by which the movable member is decoupled in its open position of the motor drive ,

In such an actuator for actuating a flap, it is known that when the motor drive is switched off and the open flap is closed by hand, a drive pinion for motorized pivoting of the flap is decoupled from the motor drive by a freewheel. The freewheel can be designed as a freewheel hub or as a switchable clutch, which is arranged on the output shaft of the motor drive.

This training of an actuator is complicated and expensive.

The object of the invention is therefore to provide an actuating device of the type mentioned, which allows a simple construction in addition to a motor drive of the movable member actuation by hand with low hand forces.

This object is achieved on the one hand, that of the reversible motor drive, a driver is driven to move, which engages in a formed in the movable member along the path of movement of the movable member extending link recess, wherein the link recess has at least a length which the Movement path of the driver between its basic position and its opening position or partial opening position corresponds and with a switching device, is moved back by an adjustment of the movable member in its open position of the driver of the motor drive in the home position.

On the other hand, the object is achieved in that of the reversible motor drive a sliding member is driven to move, which has a along the path of movement of the movable member extending Kulissenausnehmung into which engages a arranged on the movable member driver, the Kulissenausnehmung at least one length has, which corresponds to the movement path of the driver between its basic position and its opening position or partial opening position and with a switching device, is moved back by an adjustment of the movable member in its open position, the link component of the motor drive in the home position.

In these embodiments, after a motorized movement of the movable member in its open position, the driver or the link component is moved back to its original position by a motor. If now the movable member to be moved by hand from its open position to its normal position, the driver can move freely and without resistance in the sliding recess.

Is further from the reversible motor drive the movable member by the driver or the crank member from its open position to its basic position movable driven and zurückbewegbar by the switching device after an adjustment of the movable member in its basic position of the driver or the link component of the motor drive in the home position , as well as a largely resistance-free manual mobility of the movable member from its normal position is possible in its open position.

In a simple way, the switching device may comprise switching elements which detect reaching of the or the ends of the link recess by the driver.

To move the movable member one or both ends of the link recess can form stops in a simple embodiment, on which the driver can be applied and movable by movement of the driver or by movement of the link component, the movable member is driven.

An emergency shutdown is achieved in that the one or more stops are at the end of Kulissenausnehmung against a certain spring force deflectable spring stops when acted upon by the driver, wherein the determined spring force is greater than the biasing force by the driver in driving the driver or the link component by the motor drive and wherein upon deflection of the spring stops of the driver a switch, a switching signal generating actuated or increased motor current is recognizable and can be switched off by the switching signal or due to the increased motor current consumption of the motor drive.

Thus, in a normal motor drive of the movable member no compression of the spring stops by the driver. In a case of abuse, when a manual intervention on the movable member against the drive direction by the motor drive, the spring stop is deflected overcoming the determined spring force and the switch is actuated, so that the motor drive is turned off.

This protects the motor drive against damage.

Alternatively, however, an overload clutch such as e.g. a slip clutch be arranged in the drive train between the motor drive and the movable member.

The motor drive can be a linear drive or a rotary drive.

To force the driver or the link component is preferably driven by a gear from the motor drive.

The motor drive can be a pneumatic or hydraulic drive. Preferably, however, the motor drive is an electric motor.

The movable member may e.g. be held by a locking device in its open position.

Is the movable member kraftbeaufschlagbar by a spring in the direction of movement from the basic position into the open position, preferably the spring is a gas spring, not only holding the movable member in the open position but also a support of the motor drive when moving the movable component from the basic position to the open position. This is particularly advantageous if the movable component must be lifted during this movement.

The support by the gas spring can be done over the entire path of movement of the movable member or even only over part of the path of movement.

In this case, preferably, the movable member is or carries a flap for closing an opening.

This can be a flap on a motor vehicle or even a flap on a piece of furniture such. to be a closet.

In this case, the flap can be driven to move from a vertical basic position into a raised open position.

One possibility is that the movable member is movable linearly movable between the basic position and the open position and the sliding recess extends straight.

But it is also possible that the movable member is rotatably driven to rotate about an axis of rotation between the basic position and the open position and the sliding recess extends like a circle.

It leads to a compact construction when the slide recess is formed in a guide wheel or driving wheel which is rotatably mounted about an axis of rotation and which is rotatably drivable by the motor drive.

In this case, the movable member may be a lever arm.

In order to achieve a deviating from a pivoting movement characteristic, it is possible that the lever arm is a lever arm of a linkage, in particular a four-bar linkage.

The four-bar linkage may consist of the lever arm, a pivotable at one end about a second axis of rotation parallel to the axis of rotation and a coupling articulated at a distance to each other at the free ends of the lever arm and handlebar coupling, wherein the flap can be arranged fixed to the coupling ,

Figur 1

eine Seitenansicht einer Betätigungseinrichtung mit Viergelenkgetriebe in einer abgesenkten Grundstellung

Figur 2

eine vergrößerte Seitenansicht der Betätigungseinrichtung nach Figur 1

Figur 3

eine Seitenansicht einer Betätigungseinrichtung mit Viergelenkgetriebe in einer teilangehobenen Stellung

Figur 4

eine vergrößerte Seitenansicht der Betätigungseinrichtung nach Figur 3

Figur 5

eine Seitenansicht einer Betätigungseinrichtung mit Viergelenkgetriebe in einer Öffnungsstellung

Figur 6

eine vergrößerte Seitenansicht der Betätigungseinrichtung nach Figur 5

Figur 7

eine Seitenansicht einer Betätigungseinrichtung mit Viergelenkgetriebe in einer teilabgesenkten Stellung

Figur 8

eine vergrößerte Seitenansicht der Betätigungseinrichtung nach Figur 7

Figur 9

eine Seitenansicht eines weiteren Ausführungsbeispiels eines Kulissenrades.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it

FIG. 1

a side view of an actuator with four-bar linkage in a lowered basic position

FIG. 2

an enlarged side view of the actuator of Figure 1

FIG. 3

a side view of an actuator with four-bar linkage in a partially raised position

FIG. 4

an enlarged side view of the actuator of Figure 3

FIG. 5

a side view of an actuator with four-bar linkage in an open position

FIG. 6

an enlarged side view of the actuator of Figure 5

FIG. 7

a side view of an actuator with four-bar linkage in a partially lowered position

FIG. 8

an enlarged side view of the actuator of Figure 7

FIG. 9

a side view of another embodiment of a sliding wheel.

The actuator shown has a reversible electric motor 1, the drive shaft 2 is formed as a worm, of which a worm wheel 3 is rotatably driven.

The worm wheel 3 is the first wheel of a multiple-gear transmission 4, the last wheel is a crank wheel 5, which is rotatably mounted about a rotation axis 6.

Electric motor 1 and gear 4 are arranged in a housing 17.

To the rotation axis 6 is further pivotally mounted with its one end a lever arm 7 of a four-bar mechanism 8, which further comprises a link 9 which is pivotally mounted about a parallel at a distance approximately perpendicular to the axis of rotation 6 arranged second axis of rotation 10 with its one end ,

At the two free ends of lever arm 7 and link 9, a coupling 11 of the four-bar linkage is articulated in each case with one of its ends.

On the coupling 11 resting a flap 12 is fastened for closing at the opening of a cabinet, not shown.

The guide wheel 5 has a concentric with the axis of rotation 6 by about 180 ° extending, formed as a slot link groove 13 into which a fixedly arranged on the lever arm 7, extending parallel to the axis of rotation 6 extending cam-like carrier 14.

The ends of the sliding recess 5 form a first stop 15 and a second stop 16 for limiting the mobility of the driver 14 along the longitudinal extent of the sliding recess 13.

On a component of the housing 17, not shown, a first switch 18 is arranged, which is operable when the driver 14 is in contact with the first stop 15.

On the component of the housing 17, not shown, a second switch 19 is further arranged, which is operable when the driver 14 is in abutment with the second stop 16.

In Figures 1 and 2, the basic position of the four-bar mechanism 8 is shown, in which the flap 12 is in its aligned lower position and closes an opening, not shown, of a cabinet.

The driver 14 is in its basic position and is located on the second stop 16 of the sliding recess 13.

The electric motor 1 is switched off.

Thus, the flap 12 could be manually raised and lowered again, wherein the driver 14 can move freely in the sliding recess 13.

Now, if the electric motor 1 is turned on, it drives via the gear 4, the guide wheel 5 in a clockwise rotation.

Since the driver 14 is already in abutment with the second stop 16, it and with it the lever arm 7 are also driven in a clockwise direction about the rotation axis 6 by the guide wheel 5 to a partially raised partial opening position (FIGS. 3 and 4).

A non-illustrated gas spring acts on a component of the four-bar linkage 8 or the flap 12 in the opening direction and moves the flap 12 into its in FIG. 5 illustrated opening position.

At the same time, the electric motor 1 now drives the guide wheel 5 in the counterclockwise direction with the direction of rotation reversed until the driver 14 comes into abutment against the first stop 15 and the guide wheel 5 is again in its basic position (FIGS. 5 and 6).

Now, a manual lowering and lifting the flap 12 could take place, wherein the driver 14 moves freely in the sliding recess 13.

For motor closing, the electric motor 1 is switched on, which drives the guide wheel 5 in the counterclockwise direction, so that the first stop 15, the driver 14 and the four-bar linkage 8 counterclockwise entrains (Figure 7 and 8).

If a certain angle is passed over in the closing direction, the flap 12 closes automatically due to its own weight against the force of the gas spring.

By the electric motor 1, the guide wheel 5 is then moved back to its basic position, as shown in Figures 1 and 2.

FIG. 9 shows a further exemplary embodiment of a guide wheel 5 ', in which a first spring stop 20 and a second spring stop 21 are arranged in the ends of the slide recess 13'.

These spring stops 20 and 21 are compressible when a certain application force is exceeded by the driver 14, whereby a switch signal is generated by switches, not shown, which leads to a shutdown of the electric motor 1. Alternatively, such a shutdown of the engine also take place in that an increased motor current consumption is detected. However, this occurs only at an increased variable resistance, as it e.g. is given when intervened by hand in the motor actuating movement of the flap 12.

In a normal motor actuator, there is no compression of the spring stops 20 and 21 and no triggering of a switching signal.

LIST OF REFERENCE NUMBERS

1

electric motor

2

drive shaft

3

worm

4

transmission

5

bull gear

5 '

bull gear

6

axis of rotation

7

lever arm

8th

Four-bar linkage

9

handlebars

10

second axis of rotation

11

paddock

12

flap

13

Kulissenausnehmung

13 '

Kulissenausnehmung

14

takeaway

15

first stop

16

second stop

17

casing

18

first switch

19

second switch

20

first spring stop

21

second spring stop

Claims (20)

Actuating device for a movable component, comprising a motor drive, by means of which the movable component can be driven to move from a basic position into an open position, with a freewheel, by means of which the movable component can be decoupled from the motor drive in its open position, characterized in that the reversible motor drive, a driver is driven to drive, which engages in a formed in the movable member, extending along the path of movement of the movable component Kulissenausnehmung, the Kulissenausnehmung has at least a length corresponding to the path of movement of the driver between its basic position and its opening position or Partial opening corresponds to and with a switching device, is moved back by an adjustment of the movable member in its open position of the driver of the motor drive in the home position. Actuating device for a movable component, comprising a motor drive, by means of which the movable component can be driven to move from a basic position into an open position, with a freewheel, by means of which the movable component can be decoupled from the motor drive in its open position, characterized in that the reversible motor drive, a link member is driven movable, which has a along the path of movement of the movable member extending link recess (13, 13 '), in which a arranged on the movable member driver (14) engages, wherein the Kulissenausnehmung (13, 13 ') has at least a length corresponding to the path of movement of the driver (14) between its basic position and its opening position or partial opening position and with a switching device, by the adjusting of the movable member in its open position, the link component of the motor Drive can be moved back to the basic position. Actuating device according to one of the preceding claims, characterized in that of the reversible motor drive, the movable member is driven by the driver or the sliding member from its open position to its normal position movable and by the switching device after an adjustment of the movable member in its basic position of the driver or the link component of the motor drive is moved back to the basic position. Actuating device according to one of the preceding claims, characterized in that the switching device has switching elements which detect reaching of the or the ends of the sliding recess (13, 13 ') by the driver. Actuating device according to one of the preceding claims, characterized in that one or both ends of the link recess (13, 13 ') form stops (15, 16) against which the driver (14) can be applied and by movement of the driver or by movement of the link component movable component is movable driven. Actuating device according to claim 5, characterized in that the one or more stops when acted upon by the driver (14) towards the end of Kulissenausnehmung (13 ') against a certain spring force deflectable spring stops (20, 21), wherein the determined spring force is greater than the biasing force by the driver (14) when driving the driver or the link component by the motor drive and wherein upon deflection of the spring stops (20, 21) of the driver (14) a switch a switching signal generating actuated or an increased motor current consumption is recognizable and can be switched off by the switching signal or due to the increased motor current consumption of the motor drive. Actuating device according to one of the preceding claims, characterized in that the motor drive is a linear drive or a rotary drive. Actuating device according to one of the preceding claims, characterized in that the driver or the link component can be driven by the motor drive via a gear (4). Actuating device according to one of the preceding claims, characterized in that the motor drive is an electric motor (1). Actuating device according to one of the preceding claims, characterized in that the movable component can be subjected to force in the direction of movement from the basic position into the open position by a spring. Actuating device according to claim 10, characterized in that the movable component is acted upon by a gas spring in the direction of movement to the open position. Actuating device according to one of the preceding claims, characterized in that the movable component is or carries a flap (12) for closing an opening. Actuating device according to claim 12, characterized in that the flap (12) can be driven to move from a vertical basic position into a raised open position. Actuating device according to one of the preceding claims, characterized in that the movable component is linearly movable driven between the basic position and the open position and the Kulissenausnehmung extends straight. Actuating device according to one of claims 1 to 13, characterized in that the movable member is rotationally drivable about a rotational axis (6) between the basic position and the open position and the sliding recess (13, 13 ') extends like a circle. Actuating device according to claim 15, characterized in that the slide recess (13, 13 ') is formed in a guide wheel (5, 5') rotatably mounted about the axis of rotation (6) or driving wheel, which can be driven rotatably by the motor drive. Actuating device according to one of Claims 15 and 16, characterized in that the movable component is a lever arm (7). Actuating device according to Claim 17, characterized in that the lever arm is a lever arm (7) of a joint transmission, in particular of a four-bar mechanism (8). Actuating device according to claim 18, characterized in that the four-bar linkage (8) consists of the lever arm (7), a handlebar (9) pivotable at one end about a second axis of rotation (10) parallel to the axis of rotation (6) and spaced apart from one another the free ends of lever arm (7) and handlebar (9) hinged coupling (11). Actuating device according to claim 19, characterized in that the flap (12) is fixedly arranged on the coupling (11).

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