DE102017215907A1 - Switching device for producing an operative connection between two transmission parts - Google Patents

Abstract

A switching device (4) for establishing an operative connection between two gear parts comprises a brake pot (42), a carrier (41) to which the brake pot (42) is rotatable, at least one switching element (430, 431) arranged movably on the carrier (41) ), an adjustably arranged on the carrier (41) adjusting element (44) for acting on the at least one switching element (430, 431) and an actuator (40) for adjusting the adjusting element (44). By adjusting the adjusting element (44) is the at least one switching element (430, 431) for switching the switching device (4) relative to the brake pot (42) movable to the at least one switching element (430, 431) in contact or out of engagement with the brake pot (42) to bring. The actuator (40) is in this case via a spindle gear with the actuating element (44) in operative connection. In this way, a switching device is provided, which may have a compact design with favorable, reliable switching behavior of one or more switching elements.

Description

The invention relates to a switching device for producing an operative connection between two gear parts according to the preamble of claim 1.

Such a switching device can be used in particular on a device for electromotive and / or manual adjustment or fixing a first vehicle part and a second vehicle part relative to each other. Such a device can serve, for example, as a door drive for adjusting a vehicle side door or another flap in a vehicle, for example a tailgate.

Such a switching device has a brake pot, a carrier to which the brake pot is rotatable, at least one movably arranged on the carrier switching element, an adjustably arranged on the carrier actuator for acting on the at least one switching element and an actuator for adjusting the actuating element. By adjusting the adjusting element, the at least one switching element for switching the switching device can be moved relative to the brake pot in order to bring the at least one switching element in contact or out of engagement with the brake pot.

Such a switching device is for example in the DE 10 2015 215 627 A1 described.

By means of such a switching device transmission parts for transmitting an adjusting force can be coupled together. By decoupling the switching device, the transmission parts can be switched to a freewheel, so that a transmission part can be moved independently of another transmission part, for example, to move a vehicle door manually independently of a drive device.

At the time of the DE 10 2015 215 627 A1 Known switching device is a switching of switching elements via a spur gear in which via an actuator a pinion and about a sprocket is driven. The ring gear is coupled via a lever with an actuating element which serves to adjust the switching elements.

Desirable is a switching device in which in the power transmission line between the actuator and switching elements a small amount of play is present, which could be particularly detrimental when switching the direction of adjustment. In addition, it is desirable to provide a manual transmission compact design to reduce the space requirement.

Object of the present invention is to provide a switching device available, which may have a compact design with favorable, reliable switching behavior of one or more switching elements.

This object is achieved by an article having the features of claim 1.

Accordingly, the switching device has a spindle gear, via which the actuator is in operative connection with the actuating element and which has a spindle and a spindle threadedly connected to the spindle, which are mutually movable for adjusting the adjusting element.

The use of a spindle gear for coupling the actuator with the actuator allows a power transmission line between the actuator and the actuator with little play. About the spindle gear large adjustment forces can be transmitted at low lift. A spindle gear can also be realized with little space and operated quietly. Due to the coupling of the spindle nut via a threaded engagement with the spindle, tension in the system can be reduced.

The spindle may for example be rotatably mounted to the carrier. The spindle can in this case for example be mounted at its two axial ends on the carrier, so that the spindle is supported on both sides and is advantageously rotatably supported with a small axial play on the carrier. The spindle is in operative connection with the actuator, so that for adjusting the adjusting element, the spindle is rotated and about the spindle nut can be adjusted axially along the spindle. Due to the threaded engagement, the spindle nut is axially displaced along the spindle during rotation of the spindle. By coupling the spindle nut with the actuator can be transmitted in this way an adjusting force on the actuator.

To provide an advantageous bearing of the spindle, the spindle can each have a spherical bearing at one axial end or at both axial ends, which makes it possible to compensate for tolerance-related misalignment and provide a storage with high efficiency available, in particular due to a punctiform axial support on the crowned Spherical.

To drive the spindle, the actuator preferably drives a drive worm, which meshes with a pinion connected to the spindle, for example. The drive worm can be arranged, for example, on a shaft which can be driven by the actuator and is thus rotated via the actuator. The Drive worm has a worm thread, which is in meshing engagement with a toothing of the pinion, for example, a helical toothing of the pinion, so that a rotational movement of the drive worm is converted into a rotational movement of the pinion. The axis of rotation of the drive worm and the axis of rotation of the pinion are in this case preferably (approximately) directed perpendicular to each other.

The drive worm may for example have a (single) worm thread. It is also conceivable and possible, however, that the drive worm is designed to run more frequently with a plurality of, for example two worm threads, which allows a greater pitch on the individual threads.

In particular, when the drive worm has only one thread, the meshing engagement between the drive worm and the pinion can be self-locking. In the power transmission train between the actuator and the actuator thus there is self-locking, so that the actuator even when not energized actuator (which is preferably designed as an electric motor) remains in position and thus the at least one switching element is held in position relative to the brake pot of the switching device.

Additionally or alternatively, the threaded engagement between the spindle and the spindle nut may be self-locking. A self-locking can thus (also) be created between the spindle and the spindle nut. Such a self-locking can be provided for example by a thread with a small pitch on the spindle and a corresponding mating thread on the spindle nut.

To adjust the actuator, the actuator drives the spindle and puts them relative to the carrier in a rotary motion. Thereby, the spindle nut is moved longitudinally along the spindle, wherein the spindle nut is preferably coupled to a lever which is connected to the actuating element and which transmits a movement of the spindle nut along the spindle in a pivoting movement of the actuating element.

For coupling the lever with the spindle nut different variants are conceivable and possible.

Thus, in a first embodiment, a coupling element, for example in the form of a pin on the lever or on the spindle nut in an associated coupling device, for example in the form of a slot or a groove or the like engage the other part. The coupling of such a coupling element and its engagement in a coupling device allows a change in position of the spindle nut associated end of the lever relative to the spindle nut in Längsverstellen the spindle nut along the spindle compensate, so that a longitudinal movement of the spindle nut in a pivotal movement of the lever and thus in a pivoting movement of the Stellelements can be implemented.

A coupling element in the form of a pin can, for example, be arranged on the lever in order to engage in a coupling device in the form of a slot or the like on the spindle nut. Conversely, a coupling element in the form of a pin can also be arranged on the spindle nut in order to engage in a coupling device in the form of a slot or the like on the lever.

In another variant, the lever may for example be formed as a double fork, which is in engagement with bolts on both sides of the spindle nut.

In yet another embodiment, the lever may for example have a gear contour which engages in a ring gear on the spindle nut.

In yet another embodiment, the lever may also be designed as a toggle lever which has two lever sections, which are coupled to one another via a knee joint. One of the lever sections is in this case articulated on the spindle nut, while the other lever section is coupled to the actuating element or carries the actuating element.

In addition, other variants for coupling the spindle nut with the actuating element are conceivable and possible.

The switching device is switchable between different states. In one of the switching states, the spindle nut can in this case be approximated to one end of the spindle and be in engagement with one or more stop elements on the carrier, so that the spindle nut is in a defined position relative to the carrier. The stop elements may for example consist of a damping, elastic material, so that a striking of the spindle nut is acoustically damped on the stop elements and thus reaching the end position does not lead to a (perceptible) impact noise.

For example, a plurality of stop elements may be arranged symmetrically about the spindle, so that when approaching the spindle nut to the end associated with the stop elements Spindle nut is supported in a symmetrical manner over the stop elements relative to the carrier.

If the spindle is rotatably mounted to the carrier and the spindle is set to rotate the adjusting element in a rotational movement, so the spindle nut for longitudinal movement of the spindle nut along the spindle is to hold in its rotational position. For this purpose, the spindle nut is preferably fixed to the carrier by the spindle nut is slidably guided along a guideway to the carrier, so that the spindle nut is not mitverdreht upon rotation of the spindle, but while maintaining the rotational position along the guideway and thus along along the Spindle moves.

Preferably, on both sides of the spindle nut (viewed along a height direction perpendicular to the longitudinal direction of extension of the spindle) guideways are formed, between which the spindle nut is guided. The spindle nut is thus slidably guided along a defined path to the carrier.

The actuating element is formed in an advantageous embodiment in the manner of a cam and is pivotally mounted on the carrier. For example, the actuator may cooperate with a pair of shift elements to urge the shift elements into engagement with the brake pot or out of engagement with the brake pot.

Preferably, the at least one switching element can be moved between different positions in order to bring the switching device into different states.

For example, if the adjusting element is pressed so strongly against the at least one switching element that the at least one switching element comes into pressing, blocking engagement with the braking cup, then the switching device is in a coupling state in which a relative movement between the braking pot and the switching elements is blocked such that the brake cup is held stationary relative to the carrier on which the at least one switching element is arranged. In this coupling state, for example, a power transmission between the switching device associated gear parts take place.

In a freewheeling state, however, the at least one switching element, for example, is not braking with the brake pot in contact. In the freewheeling state, the at least one switching element is offset from the brake pot so that the brake cup is not locked relative to the at least one switching element and a freewheeling of the brake cup relative to the at least one switching element is possible.

In a braking state, the at least one switching element is pressed by the adjusting element, for example, in braking, grinding contact with the brake pot, so that the brake pot can move in relation to the at least one switching element, but is slowed down in its movement. The actuator is in this case preferably shaped in the manner of a cam, that based on the position of the actuating element, the braking effect can be adjusted, between a weak braking effect on a strong braking effect to a lock.

In one embodiment, the at least one switching element is arranged pivotably on the carrier. However, this is not mandatory. It is also conceivable and possible for the at least one switching element to be displaceably mounted on the carrier, for example.

A switching device of the type described here can be used, for example, in a device for manually and / or electromotively adjusting or locking a first vehicle part and a second vehicle part relative to one another. Such a device comprises an adjustment part, which has a hinge for pivotally arranging on the first vehicle part. The adjusting part is to be arranged on the first vehicle part in such a way that, when the vehicle parts are moved relative to one another, the adjusting part moves relative to the second vehicle part. On the second vehicle part, an output element is to be arranged, which is in operative connection with the adjusting part and is drivable for moving the adjusting part relative to the second vehicle part. An electromotive drive device is used to drive the output element and for this purpose has a drive motor and a gear coupling the drive motor to the drive element.

The switching device is in this case part of the transmission. By means of the switching device, the transmission between a coupling state in which the drive motor is coupled to the output element, a freewheeling state in which the coupling between the drive motor and the output element is interrupted such that the output element is movable independently of the drive motor, and a braking state in which the output element is movable independently of the drive motor, but it is braked to be switched. The transmission thus allows both an electromotive adjustment of the vehicle parts to each other and a manual adjustment. If the vehicle parts are to be adjusted by an electric motor to each other, the transmission is in his Coupled brought so that a coupling between the drive motor and the output element is made and can be adjusted by driving the output member, the vehicle parts by an electric motor to each other. If the vehicle parts are to be moved manually to each other, the transmission is placed in the freewheeling state or the braking state, so that the output element is decoupled from the drive motor and in the freewheeling free state (ie low friction), in the braking state, however, in a defined braked manner is movable. The output element can thus be moved independently of the drive motor, which allows a manual adjustment of the vehicle parts to each other, without causing the drive motor must be moved with.

The adjusting part can be designed, for example, in the manner of a tether. In contrast, the driven element can, for example, be realized as a rotatable cable drum, which is coupled to the adjusting part via a force transmission element in the form of a traction cable (which only transmits tensile forces). When adjusting the adjustment, the cable drum is moved along the adjustment and twisted in this case. An electromotive adjustment of two vehicle parts relative to each other, for example for adjusting a vehicle door, can be done by driving the cable drum. By decoupling the gear, the cable drum can be switched to a freewheel, so that a manual adjustment of the adjustment is possible, regardless of a driving the cable drum drive device.

The switching of the transmission between the different states by means of the switching device. In the coupling state in which the at least one switching element is pressed with comparatively large force in contact with the brake pot, the brake pot is in position to the carrier and thus to the housing portion of the transmission, on which the carrier is arranged, so that the Brake pot and thus also connected to the brake pot gear element can not be moved to the carrier. The transmission element is held in this way, so that via the transmission, a power flow between the drive element and the output element is made and thus the output element can be adjusted for driving via the drive device, the output side forces locked and thus the output element (not energized drive device) determined is.

In the coupling state, the at least one switching element is preferably pressed with a predefined maximum force in contact with the brake pot. The predefined, maximum force can in this case be dimensioned so that the switching device can slip under (excessive) load, in which the predefined maximum force is exceeded. This can be advantageous in particular in an emergency situation, for example in a trapping situation, for the protection of trapped objects and also for the protection of the drive device in order to avoid excessively large adjustment forces on the vehicle parts to be adjusted.

In the braking state, however, the at least one switching element is indeed in contact with the brake pot, but allows movement of the brake pot with friction relative to the at least one switching element, so that although the transmission element is movable by this rubbing, braking system, but it is braked. In this braking position, therefore, the output element can in principle be moved independently of the drive device, but it is braked.

Finally, in the freewheeling state, the at least one switching element is out of engagement with the brake pot. This allows a free adjustment of the brake cup relative to the carrier, so that the power transmission line between the output element and the drive device is interrupted and thus the output element can be adjusted independently of the drive device. In the freewheeling position, an adjustment of the output element is thus possible in a smooth, low-friction manner.

It should be noted for this purpose that in the freewheeling state, the at least one switching element is not necessarily completely out of engagement with the brake pot. It is also conceivable and possible that the at least one switching element in the freewheeling state is in sliding, but only slightly braking system with the brake pot.

In an advantageous embodiment, the at least one switching element is biased via one or more biasing elements in the direction of the freewheeling position. In this case, the adjusting element can be designed such that it presses for adjusting the at least one switching element from the freewheeling position, the at least one switching element in abutment with the brake pot to bring the at least one switching element in the braking position or in the coupling position. The resetting of the at least one switching element can then take place in a spring-assisted manner by means of the biasing biasing element.

The transmission may be formed in a specific embodiment as a planetary gear.

In principle, different variants of such a planetary gear are conceivable and possible. For example, that can Planetary gear in one or more stages, in particular two stages, be formed.

In one embodiment, the planetary gear is formed in one stage. Such a planetary gear comprises a housing portion, a planetary gear having a carrier element and at least one arranged on the carrier element planet gear, a ring gear, which is in meshing engagement with the at least one planet gear, and a drivable drive element. The output element is in this case drivable by an adjusting force is transmitted to the output element via the planetary gear by driving the drive element.

The planetary gear preferably includes a sun gear engaged with the at least one planetary gear and rotatably connected to the drive member. For example, the sun gear and the drive element may be integrally formed in the manner of a hollow shaft. The drive element is in this case driven by a suitable drive device, for example an electric motor, during operation, and thereby the sun gear is rotated and transmits an adjusting force to the output element. The hollow shaft forming the sun gear and the drive element can, for example, be arranged rotatably on a shaft connected to the output element.

The brake pot is preferably non-rotatably connected to the ring gear of the planetary gear. For example, the brake pot can be integrally formed on the ring gear.

• 1 eine schematische Ansicht einer Fahrzeugtür an einer Fahrzeugkarosserie, mit einem gelenkig an der Fahrzeugkarosserie angeordneten, bei einem Verschwenken der Fahrzeugtür relativ zu der Fahrzeugtür bewegten Verstellteil in Form eines Fangbands;
• 2 eine Ansicht eines Ausführungsbeispiels einer Vorrichtung zum Verstellen und Feststellen zweier Fahrzeugteile relativ zueinander;
• 3 eine Ansicht des Antriebsstrangs der Vorrichtung;
• 4 eine Ansicht einer Baugruppe der Vorrichtung mit einem Verstellteil, einem an dem Verstellteil angeordneten Zugseil und einer mit dem Zugseil verbundenen Seiltrommel;
• 5 eine gesonderte Ansicht der Seiltrommel;
• 6 eine gesonderte Ansicht der Seiltrommel mit daran angeordnetem Zugseil;
• 7 eine Ansicht einer Schalteinrichtung zum Schalten des Getriebes;
• 8A eine Ansicht der Schalteinrichtung, in einem Kopplungszustand;
• 8B eine Ansicht der Schalteinrichtung, in einem Bremszustand;
• 8C eine Ansicht der Schalteinrichtung, in einem Freilaufzustand;
• 9 eine Ansicht der Schalteinrichtung von unten ohne das Trägerelement; und
• 10 eine gesonderte Ansicht eines Spindelgetriebes der Schalteinrichtung, mit einer über einen Stellantrieb antreibbaren Spindel und einer mit der Spindel in Gewindeeingriffe stehenden Spindelmutter.

The idea underlying the invention will be explained in more detail with reference to the embodiments illustrated in the figures. Show it:

• 1 a schematic view of a vehicle door on a vehicle body, arranged with a hinged to the vehicle body, upon pivoting of the vehicle door relative to the vehicle door moving adjustment part in the form of a tether;
• 2 a view of an embodiment of a device for adjusting and locking two vehicle parts relative to each other;
• 3 a view of the drive train of the device;
• 4 a view of an assembly of the device with an adjustment, arranged on the adjustment part of the traction cable and connected to the pull rope cable drum;
• 5 a separate view of the cable drum;
• 6 a separate view of the cable drum with Zugseil arranged thereon;
• 7 a view of a switching device for switching the transmission;
• 8A a view of the switching device, in a coupling state;
• 8B a view of the switching device, in a braking state;
• 8C a view of the switching device, in a freewheeling state;
• 9 a view of the switching device from below without the carrier element; and
• 10 a separate view of a spindle gear of the switching device, with a drivable via an actuator spindle and a spindle in threaded engagement with the spindle nut.

1 shows a schematic view of a vehicle 1 with a vehicle body 10 and one around a door hinge 111 hinged to the vehicle body 10 arranged vehicle door 11 along an opening direction O relative to the vehicle body 10 can be pivoted to release or close a door opening.

Between the vehicle body 10 and the vehicle door 11 acts a device 2 that is an adjustment part 21 in the form of a tether and for detecting and / or adjusting the vehicle door 11 relative to the vehicle body 10 serves. The adjustment part 21 in the form of the tether is around a joint 20 on the vehicle body 10 For example, on the A-pillar of the vehicle 1 , articulated and moves when pivoting the vehicle door 11 relative to the vehicle door 11 , The adjustment part 21 stands to this end 211 in a door interior 110 the vehicle door 11 in and moves when adjusting the vehicle door 11 in this door interior 110 ,

Perspective views of an embodiment of a device 2 of this kind are in 2 to 6 shown. The adjustment part 21 in the form of the tether bears at one end 210 a joint 20 attached to the vehicle body 10 For example, the A-pillar of the vehicle 1 , can be set to this way the adjustment part 21 articulated with the vehicle body 10 connect to.

With his from the end 210 opposite end 211 extends the adjustment 21 in the door interior 110 the vehicle door 11 into it. The adjustment part 21 stands here with the vehicle door 11 in operative connection to the vehicle door 11 in an occupied adjustment position relative to the vehicle body 10 determine and / or an electromotive or manual adjustment of the vehicle door 11 relative to the vehicle body 10 to enable.

The basic structure of the operative connection between the vehicle parts 10 . 11 producing assembly of this device 2 is in 4 to 5 shown.

At the adjustment part 21 is a flexible, tensile forces transmitting power transmission element in the form of a pull rope 22 , For example, a steel or plastic rope arranged. The rope 22 has two different, separately formed sections 22A . 22B on, on the one hand with the adjustment 21 and on the other hand with an output element in the form of a cable drum 24 are connected.

The sections 22A . 22B extend along a tread 215 of the adjustment 21 and are partly on the rope drum 24 wound. The first paragraph 22A of the pull rope 22 extends between a fastening device 212 of the adjustment 21 and the rope drum 24 and is with a rope nipple 223 at one end of the rope into the fastening device designed as a nipple chamber 212 positively inserted. The other, second section 22B extends between the cable drum 24 and an adjustment device 23 used to adjust the free length of the pull rope 22 on the adjustment part 21 serves.

The rope drum 24 is at a longitudinal along a longitudinal axis L extended wave 34 arranged and is about the longitudinal axis L rotatable. The rope drum 24 As shown in the separate view 5 seen, one in the manner of a thread groove around the cable drum 24 circumferential rope groove 241 on, in the sections 22A . 22B einliegen. On both sides is this rope grooves 241 through raceways 242 . 243 bounded radially over the cable drum 24 protrude outward and represent closed rings with which the cable drum 24 so in contact with the tread 215 of the adjustment 21 is that when twisting the rope drum 24 around the longitudinal axis L the rope drum 24 on the tread 215 of the adjustment 21 rolls. At the cable drum 24 are, diametrically opposite and each adjacent to one of the races 242 . 243 , Fastening devices 244 . 245 arranged in the form of so-called nipple chambers, in which a respective associated section 22A . 22B of the pull rope 22 with one end rests and thus slip-free on the cable drum 24 is held.

When turning the rope drum 24 around the longitudinal axis L becomes one of the sections 22A . 22B (depending on the direction of rotation) on the cable drum 24 wound up while the other section 22B . 22A from the rope drum 24 is handled. The rope 22 in this case changes its extension length to the adjustment 21 Not. Rather, the twisting of the cable drum leads 24 to an adjustment of the adjustment 21 along an adjustment direction V relative to the cable drum 24 , so by driving the cable drum 24 the adjustment part 21 and thus the vehicle parts 10 . 11 can be moved to each other. Alternatively, via the cable drum 24 also - with a manual adjustment of the finished parts 10 . 11 to each other - a braking effect can be provided to the vehicle parts 10 . 11 to determine each other in a just taken position or to influence the adjustment by braking when adjusting.

The rope drum 24 is form-fitting and rotatable with the shaft in this way 34 connected. The wave 34 is, as will be explained below, in the illustrated embodiment part of a transmission 30 , about that for adjusting or fixing on the rope drum 24 can be acted upon. The rope drum 24 is in a cable drum housing 380 edged with a case 38 the device 2 connected is. The cable drum housing 380 stores the rope drum 24 rotatable and also serves for defined guidance of the cable drum 24 relative to the adjustment 21 ,

In the embodiment according to 2 to 6 is the rope drum 24 with a drive device 3 coupled, which is a transmission 30 and is configured such that the vehicle door 1 electromotive by means of the drive device 3 or manually independent of the drive device 3 or even in the manner of a servo motor electromotive assisted by the drive device 3 can be adjusted. The gear 30 is in the illustrated embodiment, as shown 3 seen, designed as a single-stage planetary gear and has a planetary gear 32 with planet wheels 321 on, on a rotation with the shaft 34 connected support element 320 about axes of rotation 322 are rotatably arranged and with an internal toothing 312 on a ring gear 31 be in meshing engagement.

The planet wheels 321 are axially between two support elements 320 rotatably received, of which in 3 only a lower support element 320 is shown. The carrier for the planet wheels 321 is thus by two support elements 320 formed between which the planetary gears 321 are rotatably arranged.

The planet wheels 321 comb with a sun wheel 326 on a hollow shaft 327 is arranged. The hollow shaft 327 is at the shaft 34 arranged freely rotating and forms a spur gear 328 out, with a drive screw 371 at one a drive motor 370 driven motor shaft 37 combs. The hollow shaft 327 may preferably be integral with the sun gear formed thereon 326 and the spur gear 328 be educated. Basically, however, a multi-part design is conceivable and possible.

The ring gear 31 forms the internal toothing 312 for engagement with the planetary gears 321 out. The ring gear 31 is here via a storage section 318 in the form of a bearing bush on the shaft 34 rotatably mounted and forms on one of the internal teeth 312 opposite, axial end of a brake pot 42 in which switching elements 430 . 431 a switching device 4 are arranged, which - driven by an actuator 40 - are adjustable between different states.

The in one embodiment in 7 to 10 illustrated switching device 4 is designed in the manner of a drum brake and is in different functional states in 8A to 8C shown. The switching elements 430 . 431 in the form of brake shoes with brake pads arranged thereon 434 are on a carrier formed by a housing part 41 arranged, which is stationary to the housing 38 is arranged. The brake shoes 430 . 431 are a fixed camp 432 (see for example 7 and 8A-8C) pivotable on the carrier 41 arranged and can be used to shift the gearbox 30 be adjusted between different positions.

For adjusting the switching elements 430 . 431 in the form of brake shoes is an actuator 44 provided in the form of a cam which is pivotable on the carrier 41 arranged and with a lever 405 is connected and can be adjusted via a spindle gear.

The spindle gear has a spindle 402 and one with the spindle 402 Threaded spindle nut 404 on, which are movable to each other.

The spindle 402 is at its axial ends via a respective spherical spherical bearing 403 to the carrier 41 , the component of the housing 38 the drive device 3 is rotatably mounted and carries on an actuator 40 in the form of an electric motor associated end of a pinion 401 , which is designed as a worm wheel with a circumferential helical toothing and with one on a drive shaft of the actuator 40 fixed drive screw 400 is in meshing engagement.

The spindle nut 404 is in contrast via a guide section 406 along a direction of movement A to the carrier 41 guided and to the leadership section 406 sliding with a guideway 411 on the carrier 41 in Appendix. A second guideway is at one to the carrier 41 to be applied in 7 and 8A-8C Not shown housing half formed, so that the spindle nut 404 in its rotational position to the carrier 41 fixed, but sliding along the direction of movement A is guided.

The spindle nut 404 is with a lever 405 coupled to the actuator 44 is arranged rigidly. How out 9 and 10 can be seen, the spindle nut 404 for coupling with the lever 405 a coupling device in the form of a slot 407 in, in which a coupling element in the form of a pin 408 on the lever 405 intervenes such that during a longitudinal movement of the spindle nut 404 along the spindle 402 a change in position of the pin 408 to the spindle nut 404 can be compensated.

For adjusting the switching elements 430 . 431 drives the actuator 40 the drive screw 400 on, which makes the pinion 401 and thus the spindle 402 put in a rotary motion. This will cause the spindle nut 404 - due to its threaded engagement with the spindle 402 - along the direction of movement A to the spindle 402 adjusted, and thus the around the pivot axis D of the actuating element 44 swivel lever 405 along the direction of adjustment S and thus also the control element 44 around the pivot axis D pivoted.

About the switching device 4 can the gearbox 30 be switched between a coupling state, a braking state and a freewheeling state.

In the freewheeling state ( 8A) are the brake shoes 430 . 431 in a freewheeling position and are accordingly (slightly) from the brake pot 42 removed, leaving the brake pot 42 not opposite the case 38 is determined and also no (notable) braking effect by the brake shoes 430 . 431 is effected. In this freewheeling state, the cable drum 24 basically independent of the drive motor 370 be moved without the drive motor 370 at a driven side movement of the cable drum 24 is moved. In this freewheeling state is in particular a smooth, manual adjustment of the vehicle door 11 independent of the drive motor 370 possible.

How out 8A can be seen, is the spindle nut 404 in the freewheeling state with stop elements 410 on the carrier 41 in attack. Two stop elements 410 are diametrically opposite in the area of the actuator 40 opposite end of the spindle 402 and thus symmetrical to the spindle 402 arranged and consist of a damping, relatively elastic Material, so that reaching the end position of the spindle 404 is acoustically damped.

From the freewheeling state, the switching device can 4 be adjusted by the spindle nut 404 by turning the spindle 402 in a corresponding direction of rotation of the stop elements 410 removed and thus the actuator 44 for expanding the switching elements 430 . 431 is pivoted to each other, like this 8B is apparent. In a braking state, the brake shoes 430 . 431 with - compared to the coupling state - reduced force on the inside against the brake pot 42 pressed so that the ring gear 31 not locked, but (only) braked in a defined manner. The ring gear 31 can thus be relative to the carrier 41 twisting, but it is about the frictional contact of the brake shoes 430 . 431 on the brake pot 42 braked.

By such a braking effect, braking of the movement of the vehicle parts 10 . 11 caused to each other, for example, when manual adjustment, the vehicle door 11 approaching an end position, for example the maximum open position. About a defined braking can also be too fast movement, for example, in a manual slamming the vehicle door 11 be slowed down.

In the braking state are the switching elements 430 . 431 dragging and thus braking inside on an associated braking surface 420 the brake pot 42 (please refer 3 ), so that a braking effect is provided. By further adjustment of the spindle nut 404 in the direction of movement A becomes the control element 44 continue around its pivot axis D twisted like this in 8C is shown, so that the switching elements 430 . 431 pressing in contact with the brake pot 42 pressed and thus non-positively to the brake pot 42 be determined. The switching device 4 thus enters the coupling state in which the brake pot 42 relative to the carrier 41 is held stationary.

In the coupling state ( 8C) is the brake pot 42 by blocking effect of the brake shoes 430 . 431 relative to the housing 38 locked so the ring gear 31 relative to the housing 38 is held. In this coupling state is a power flow between the hollow shaft 327 and the rope drum 24 made so over the gearbox 30 the drive motor 370 with the rope drum 24 coupled and the cable drum 24 can be adjusted by electric motor.

In the coupling state are the brake shoes 430 . 431 in the coupling position according to 8C and are about this via the actuator 40 by means of the actuating element 44 with a maximum force on the inside in contact with the brake pot 42 pressed. By this locking system is the ring gear 31 relative to the carrier 41 and thus to the housing 38 held, so that the power transmission line between the drive motor 370 and the rope drum 24 is closed and adjusting forces of the drive motor 370 to the rope drum 24 can be transmitted or the cable drum 24 (when the drive motor is not energized 370 ) in its currently occupied position due to a self-locking of the transmission 30 is determined.

The maximum force with which the brake shoes 430 . 431 in contact with the brake pot 42 can be pressed, this can be such that when this maximum force is exceeded, the clutch can slip. In this way, for example, in emergency situations, for example in a trapping case, it can be prevented that excessively large adjusting forces can be transmitted.

How out 8A to 8C As can be seen, the brake shoes 430 . 431 via pretensioning elements 433 in the form of tension springs in the direction of their freewheeling position ( 8C) biased. For adjusting the brake shoes 430 . 431 from the freewheeling position pushes out the actuator 44 the brake shoes 430 . 431 apart and thus in the direction of the brake pot 42 , This is done against the action of the biasing elements 433 , To reset the brake shoes 430 . 431 in the direction of the freewheeling position is the actuator 44 pivoted back, with the brake shoes 430 . 431 due to the action of the biasing elements 433 the actuator 44 follow and thus move back in the direction of their freewheeling position.

Is an electromotive driving force on the cable drum 24 be transmitted, locks the switching device 4 the brake pot 42 (Coupling state) so that it relative to the housing 38 is held. Now via the drive motor 370 the drive shaft 37 and above that the drive screw 371 driven, so is the hollow shaft 327 over the attached spur gear 328 twisted, which also causes the sun gear 326 and above that the planet wheels 321 to be twisted. The planet wheels 321 would come with the fixed ring gear 31 and transmit about the rotation with the shaft 34 connected support element 320 the drive movement in a squat manner on the shaft 34 and on the rope drum 24 ,

By driving the sun gear 326 thus becomes the carrier element 320 on which the planetary gears 321 are arranged, twisted, and above it is the shaft 34 and the rotation with the shaft 34 Connected cable drum 24 driven.

In freewheeling state are the switching elements 430 . 431 on the other hand, offset radially inwards such that the ring gear (at least largely) free to the housing 38 can turn. Will the rope drum 24 and above that the wave 34 by manual adjustment of the vehicle door 11 twisted, so the support member rotates 320 with the planetary gears arranged thereon 321 together with the wave 34 , This leads to a rotation of the ring gear 31 without causing any (notable) power transmission to the sun gear 326 comes. The rope drum 24 is thus from the drive motor 370 decoupled and can be free relative to the drive motor 370 to be twisted.

In particular, in this way is a manual adjustment of the vehicle door 11 independent of the drive motor 370 possible.

In the braking state are the switching elements 430 . 431 dragging and thus braking on the inside of the brake pot 42 so that a movement of the ring gear 31 is slowed down. Will now, for example, in a manual adjustment of the vehicle door 11 the rope drum 24 and above that also the wave 34 twisted, so is the ring gear 31 over the planet wheels 321 Although twisted, but braked, so a braking effect on the vehicle door 11 is exercised.

The actuator 40 is preferably after a switching operation, ie after an adjustment of the switching elements 430 . 431 , de-energized, so that the vehicle battery through the actuator 40 is not overly burdened. The switching device 4 is held in its just assumed state due to a self-locking, so that the switching elements 430 . 431 remain in their current position. Such a self-locking can be provided for example by the fact that the meshing engagement between the drive screw 400 and the pinion 401 self-locking. Additionally or alternatively, the threaded engagement between the spindle 402 and the spindle nut 404 be self-locking.

The actuator 44 is formed by a cam between the ends of the switching elements 430 . 431 that is the camp 432 are turned away, and is shaped such that by pivoting the actuating element 44 around a pivot axis D the switching elements 430 . 431 can be pivoted for radial expansion or contraction.

While the spindle nut 404 in the freewheeling state ( 8A) that of the actuator 40 opposite end of the spindle 402 approximated and with the stop elements 410 is in a defined plant, is the spindle nut 404 in the coupling state ( 8C) the actuator 40 and thus the one on the actuator 40 associated end of the spindle 402 arranged pinion 401 approximated. To do this over the life of the device 2 especially even with wear on the actuator 44 to allow a reliable switching between the different switching states, is the adjustment of the spindle nut 404 along the spindle 402 preferably so large that the spindle nut 404 when worn on the actuator 44 the pinion 401 can be further approximated than, for example, in an initial state at startup. In the direction of the pinion 401 is thus additional adjustment for the spindle nut 404 at the spindle 402 available, which in case of wear on the actuator 44 can be exploited.

In addition, it can be provided that when adjusting from the freewheeling state ( 8A) in the direction of the braking state ( 8B) First, a certain adjustment is required to the switching elements 430 . 431 in contact with the brake pot 42 bring to. This may be advantageous to burn off the contacts of the actuator 40 , which is designed, for example, as a brush-commutated DC motor. Such an empty path at the beginning of the adjustment from the freewheeling state can also favor, in addition to a burn-off of the contacts, that the actuator 40 can accelerate to a defined speed.

How out 9 Obviously, the slot is 407 on the spindle nut 404 , viewed from the side of the actuator 44 , beyond the spindle 402 formed, so that the coupling between the lever 405 and the spindle nut 404 on the of the actuator 44 opposite side of the spindle 402 he follows. This can be a space-saving design of the switching device 4 favor.

Instead of the coupling of the spindle nut used in this embodiment 404 with the lever 405 about the engagement of a coupling element 408 in a coupling device in the form of a slot 407 can also be used a different type of coupling, for example via a coupling element on the spindle nut 404 placed in an associated slot on the lever 405 intervenes. Alternatively, the lever 405 Also form a double fork, the two sides around the spindle nut 404 around and with coupling elements in the form of pins on both sides (ie above and below) of the spindle nut 404 engaged. Again, alternatively, the lever 405 a gear contour having, with a ring gear segment of the spindle nut 404 engaged. Or the coupling of the spindle nut 404 with the actuator 44 can be done via a toggle.

The idea underlying the invention is not limited to the embodiments described above, but can in principle also be implemented in a completely different manner.

A switching device of the type described here can be used to completely different adjustment for adjusting two vehicle parts use. A door drive, as has been described above, represents in this context only one possible example of an application of such a switching device. Basically, the switching device can be used anywhere where to couple gear parts in the context of an adjustment or a locking device in a vehicle are.

LIST OF REFERENCE NUMBERS

1

vehicle

10

body

11

vehicle door

110

Door interior

111

door hinge

2

contraption

20

joint

21

Adjustment part (tether)

210,211

The End

212

fastening device

213

opening

214

guideway

215

tread

22

Flexible power transmission element (pull rope)

22A, 22B

cable section

223

cable nipple

23

adjustment

24

cable drum

240

opening

241

cable groove

242, 243

race

244, 245

Fastening device (nipple chamber)

3

driving means

30

transmission

31

ring gear

312

internal gearing

318

bearing section

32

planetary gear

320

support element

321

planetary gears

322

axis of rotation

326

sun

327

hollow shaft

328

spur gear

34

wave

37

motor shaft

370

drive motor

371

drive worm

38

casing

380

Cable drum housing

4

switching device

40

actuator

400

drive worm

401

pinion

402

spindle

403

Spherical Bearings

404

spindle nut

405

lever

406

guide section

407

coupling device

408

coupling element

41

carrier

410

stop element

411

guideway

412

bearing section

42

brake pot

420

brake surface

430, 431

Switching elements (brake shoes)

432

fixed bearing

433

tension springs

434

brake lining

435

collar

44

actuator

A

movement direction

D

swivel axis

L

longitudinal axis

O

opening direction

S

setting direction

V

adjustment

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102015215627 A1 [0004, 0006]

Claims (15)

Switching device (4) for producing an operative connection between two gear parts, comprising - a brake pot (42), - a carrier (41) to which the brake pot (42) is rotatable, - at least one switching element movably arranged on the carrier (41) ( 430, 431), - an adjusting element (44) arranged adjustably on the support (41) for acting on the at least one switching element (430, 431) and - an actuator (40) for adjusting the adjusting element (44), wherein by adjusting the Control element (44) which is at least one switching element (430, 431) for switching the switching device (4) relative to the brake pot (42) is movable to the at least one switching element (430, 431) in abutment or out of engagement with the brake pot (42). characterized by a spindle gear, via which the actuator (40) with the actuating element (44) is in operative connection and which has a spindle (402) and with the spindle (402) in threaded engagement with the spindle nut (404), the Hide! Llen the adjusting element (44) are mutually movable. Switching device (4) after Claim 1 , characterized in that the spindle (402) is rotatably mounted to the carrier (41). Switching device (4) after Claim 2 , characterized in that the spindle (402) via at least one Kallotenlager (403) is mounted on the carrier (41). Switching device (4) according to one of Claims 1 to 3 characterized by a drive screw (400) rotatable by the actuator (40) for driving the spindle (402). Switching device (4) after Claim 4 , characterized in that the spindle gear has a pinion (401) connected to the spindle (402), which meshes with the drive worm (400) in meshing engagement. Switching device (4) after Claim 5 , characterized in that the meshing engagement between the drive worm (400) and the pinion (401) is self-locking. Switching device (4) according to one of the preceding claims, characterized in that the threaded engagement between the spindle (402) and the spindle nut (404) is self-locking. Switching device (4) according to one of the preceding claims, characterized in that the spindle nut (404) is coupled to a lever (405) connected to the adjusting element (44) such that movement of the spindle nut (404) along the spindle (402 ) is converted into a pivoting movement of the lever (405). Switching device (4) after Claim 8 , characterized in that the lever (405) is coupled to the spindle nut (404) via a coupling element (408) engaging in a coupling device (407). Switching device (4) according to one of the preceding claims, characterized in that the carrier (41) has at least one stop element (410) on which the spindle nut (404) rests in an end position of the spindle (402) approximated end position. Switching device (4) according to one of the preceding claims, characterized in that the spindle nut (404) along a guide track (411) is slidably guided to the carrier (41). Switching device (4) according to one of the preceding claims, characterized in that the adjusting element (44) about a pivot axis (D) is arranged pivotably on the carrier (41). Switching device (4) according to one of the preceding claims, characterized in that the at least one switching element (430, 431) - in a coupling state fixed to the brake pot (42) in abutment, - not braked in a freewheeling state with the brake pot (42) is in abutment and - in a braking state via the adjusting element (44) braking in contact with the brake pot (42) is pressed. Switching device (4) according to one of the preceding claims, characterized in that the at least one switching element (430, 431) to the carrier (41) is pivotable. Device (2) for manual and / or electromotive adjustment or locking of a first vehicle part and a second vehicle part relative to each other, comprising - an adjusting part (21) having a hinge (20) for pivotal positioning on the first vehicle part, wherein the adjusting part ( 21) is to be arranged on the first vehicle part, that when adjusting the vehicle parts to each other, the adjusting part (21) moves relative to the second vehicle part, - to be arranged on the second vehicle part output element (24) with the adjustment part (21) in Operative connection is and for moving the adjusting part (21) is drivable relative to the second vehicle part, and - an electromotive drive device (3) for driving the output element (24), wherein the drive device (3) has a drive motor and a drive (3) with the output element (24) coupling gear (30), characterized in that the transmission (30 ) comprises a switching device (4) according to one of the preceding claims, which is formed, the transmission (30) between - a coupling state in which the drive motor (370) is coupled to the output member (24), - a freewheeling state in which the Coupling between the drive motor (370) and the output element (24) is interrupted such that the output element (24) is movable independently of the drive motor (370), and - a braking state in which the output element (24) independently of the drive motor ( 370) is movable, but it is braked to switch.

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