EP0374271B1 - Drive unit for a door sliding horizontally along a guide rail by means of rollers - Google Patents

Drive unit for a door sliding horizontally along a guide rail by means of rollers Download PDF

Info

Publication number
EP0374271B1
EP0374271B1 EP88121120A EP88121120A EP0374271B1 EP 0374271 B1 EP0374271 B1 EP 0374271B1 EP 88121120 A EP88121120 A EP 88121120A EP 88121120 A EP88121120 A EP 88121120A EP 0374271 B1 EP0374271 B1 EP 0374271B1
Authority
EP
European Patent Office
Prior art keywords
pinion
bushing
fact
driving unit
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88121120A
Other languages
German (de)
French (fr)
Other versions
EP0374271A1 (en
Inventor
Kurt Berner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FIRMA KURT BERNER
Original Assignee
KURT BERNER Firma
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KURT BERNER Firma filed Critical KURT BERNER Firma
Priority to AT88121120T priority Critical patent/ATE82034T1/en
Priority to EP88121120A priority patent/EP0374271B1/en
Priority to DE8888121120T priority patent/DE3875738D1/en
Publication of EP0374271A1 publication Critical patent/EP0374271A1/en
Application granted granted Critical
Publication of EP0374271B1 publication Critical patent/EP0374271B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/60Power-operated mechanisms for wings using electrical actuators
    • E05F15/603Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/632Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E05F15/635Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements
    • E05F15/638Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements allowing or involving a secondary movement of the wing, e.g. rotational or transversal
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/40Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/43Motors
    • E05Y2201/434Electromotors; Details thereof
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/60Suspension or transmission members; Accessories therefore
    • E05Y2201/622Suspension or transmission members elements
    • E05Y2201/71Toothed gearing
    • E05Y2201/722Racks
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2400/00Electronic control; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/60Power supply; Power or signal transmission
    • E05Y2400/61Power supply
    • E05Y2400/612Batteries
    • E05Y2400/614Batteries charging thereof
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2400/00Electronic control; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/60Power supply; Power or signal transmission
    • E05Y2400/65Power or signal transmission
    • E05Y2400/656Power or signal transmission by travelling contacts
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2400/00Electronic control; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/60Power supply; Power or signal transmission
    • E05Y2400/65Power or signal transmission
    • E05Y2400/66Wireless transmission
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2600/00Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40Mounting location; Visibility of the elements
    • E05Y2600/46Mounting location; Visibility of the elements in or on the wing
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26Form, shape

Definitions

  • the invention relates to the drive of so-called all-round gates, as gates which consist of a multiplicity of narrow, vertically arranged slats. At least on the top of such gates there are rollers that run on a guide rail, so that such a gate can be moved horizontally with relatively little effort.
  • the individual slats are connected to each other with sufficient flexibility to be able to move the door around curves.
  • drive units For the motor-driven opening and closing of such gates, drive units have hitherto been known which have been fastened to the inside of the gates in the vicinity of the upper edge thereof and, via an electric motor, drive a drive roller which has been provided with a peripheral surface which has a high coefficient of friction, such as rubber , had. If such a friction wheel was pressed onto the guide rail sufficiently firmly and driven, the entire door was thereby moved along the guide rail.
  • the pressure of the friction wheel on the guide rail was mostly achieved by the fact that the friction wheel, usually including the motor-gear unit or even the entire drive unit, was pivotable about an axis outside the friction wheel, so that the dead weight of these parts or even additional weights attached pressed the friction wheel onto the guide rail.
  • electromagnets were alternatively applied, which also pressed the friction wheel against the guide rail by means of a corresponding lever arm when the engine was switched on.
  • the gates driven in this way were in their end positions, i.e. the open and closed positions, brought to a standstill via fixed limit switches installed on the building, which were operated directly by the gate to be moved. These drive units were powered by means of cable loops.
  • the friction wheel drive is in principle susceptible to faults, since the pressure forces that press the friction wheel against the guide rail are usually only designed for optimal or at most average frictional relationships between the friction wheel and the guide rail of time, however, the guide rail becomes soiled, to which condensation or, in the worst case, oil or soot residues, for example from diesel exhaust gases, can be added, as a result of which the friction between the friction wheel and the guide rail is drastically reduced, so that the friction wheel often spins and not in Was able to move the gate.
  • the high pressure forces of the friction wheel drive are avoided by using a toothed wheel instead of a friction wheel, which meshes with an approximately vertically extending toothed rack attached along the guide rail. Slipping would only be possible here if the force of the gear drive is sufficient to lift the gear together with the drive unit and the gate attached to it beyond the teeth of the rack. This can be avoided by simply reaching under the guide rail from the drive unit.
  • the rack that is used usually consists of a single-sided toothed, only a few millimeters thick band material, which is sufficiently flexible to be best arranged directly on the guide rail, in one piece or in several pieces.
  • the pinion In order to prevent the pinion from disengaging transversely to the rack, the pinion must be designed to be substantially wider than the rack, and in practice it is about ten times as wide as the rack. In this way, greater inaccuracies in the impact run between the pinion, that is to say the gate as a whole, and the guide rail, for example in the region of the curves, can be coped with. Of course, with such a transverse offset, scraping occurs in the transverse direction between the pinion and the rack.
  • the pinion is advantageously made of plastic, namely of polyamide, which not only ensures that the pinion runs quietly on the rack, but also makes any lubrication between the plastic pinion and the metal rack unnecessary.
  • this tooth form of the rack enables a tooth form on the pinion in which the thickness of the teeth as a whole and especially in the region of the tooth head is very large.
  • the tooth flanks of the pinion represent an involute
  • the semicircular shape of the tooth head results in a tooth cross-section which tapers only slightly from the tooth base to the tooth head. This corresponds to the lower resilience of the plastic of the pinion compared to the metal of the rack and still results in a clean rolling of the flanks of the pinion on those of the rack.
  • the drive unit according to the invention has in common with the known drive units that it usually has a housing which consists of a base plate on the one hand, on which all components to be accommodated within the housing are fastened, and a cover which is fastened to the base plate, and which in parts housed in this housing protects against contamination.
  • the output shaft of the motor-gear unit mounted on the base plate inside the housing extends through an opening in the base plate outwards from the housing, where the pinion running on the rack is attached to the output shaft.
  • At least one accumulator is additionally accommodated in the housing, which also supplies the electric motor with energy without being connected to the power supply.
  • This accumulator is connected to contact points outside the housing, for example on the front side of the gate, which is only connected to the power supply for recharging via mating contacts attached to the building when, depending on the mating contacts, the gate is completely closed open or closed position.
  • This tap can take place outside the housing, for example in the vicinity of the pinion, with the result that a return of this tap into the housing to the limit switches is necessary. If, on the other hand, the output shaft is tapped within the housing, this means that the motor-gear unit is not mounted directly on the base plate, but by means of spacers on the base plate in order to provide enough space between the motor-gear unit and the base plate for tapping to create the rotary movement towards the limit switches.
  • the tapping from the output shaft or pinion should take place on a threaded rod on which elements with a corresponding internal thread are screwed on, which are prevented from rotating when the threaded rod rotates and are thus screwed along the threaded rod until they are in a position which correspond to the open or closed position of the gate, each reach and operate one of the two limit switches. Since these elements can only be adjusted on site after the drive unit has been installed, adjustment must be as simple as possible on the one hand and conversion of the door movement as precise as possible on the other hand.
  • the pinion itself is not entirely made of plastic due to the usual attachment to the output shaft of the motor-gear unit by means of a conical seat, since this would not be able to cope with the pressure load in the long run without play. Rather, a metal bushing is attached to the tapered seat of the abrasion shaft, with which the pinion made of plastic is screwed in several places.
  • the tapping from the pinion to the threaded rod for the limit switches is now carried out in that a socket is pushed onto an outer circumference of the metal bushing which is formed by a shoulder and points towards the motor-gear unit and which, after being pushed on, by means of an annular bead arranged on its inner circumference a corresponding groove engages on the outer circumference of the metal bushing.
  • the pushing on of the socket is done by the multiple axial slits of the bushing possible over the circumference.
  • the bushing widens and then springs back elastically into its original shape.
  • one or more notch nails are inserted axially through the metal bushing into the bushing. Since the material of the bushing has to give way when pushed on and then spring back again, the bushing can be made of plastic, preferably of polyamide, which brings cost advantages in particular with regard to the bevel gear teeth to be fitted on the bushing.
  • the axial length of the bush is selected such that it extends straight through the base plate into the interior of the housing.
  • a bevel gear toothing is worked into the bushing, which meshes with a bevel pinion, which is located at the end of the threaded rod, which is arranged and mounted parallel to the base plate between the base plate and the motor-gearbox unit, i.e. transversely to the output shaft of the motor.
  • the bevel pinion is preferably also made of plastic material and, in the event that the threaded rod is made of metal, is sprayed directly onto the end of the threaded rod provided with a multi-tooth profile.
  • the bevel gear teeth on the socket protrude just beyond the base plate so that the gripping threaded rod with the bevel pinion attached can be stored as low as possible above the base plate.
  • the metal threaded rod is conventionally stored in bearing blocks that are screwed onto the base plate, for example.
  • the motor-gear unit can be placed directly on the base plate without spacers having to be arranged in between.
  • This spacer would not only bring larger dimensions of the entire housing but also an increase in weight, since this spacer normally has to be made of metal in order to achieve sufficient heat dissipation through this spacer when the motor is heated, for example in the event of an overload. If, on the other hand, this spacer were made of polystyrene, the spacer would possibly melt away if the motor were heated and, if the drive unit was nevertheless put into operation, would severely damage the entire drive unit.
  • the drive unit there is a lighting which is switched on with every impulse which contains the drive unit, so that the function of the drive unit in operation can be checked not only when the cover is removed, but also in a dark environment, but also because of a special design the cover of the drive unit is illuminated by the one below Range is given.
  • the cover is not formed horizontally in its lower area, but rather at an angle, and is equipped with an at least partially translucent area in order to let the light of the light source arranged inside the housing pass through.
  • the all-round door can be pushed open by hand without changes to the drive unit, since the motor-gear unit is not designed to be self-locking.
  • the worm gear contained in the gear unit it is advisable to design the worm gear contained in the gear unit to have multiple threads, i.e. that the pitch of the worm is so large that several threads of the worm are simultaneously engaged on the worm wheel.
  • the operation of the door lock, a bolt or the like must be done by hand, because when the door is opened when the motor is opened, an electromagnet is activated inside the drive unit at the same time as the motor gear unit is started, which, for example, has a fastening device protruding outwards from the housing pulls a cable or a fastening rod which is connected to the door latch. Since there is no electrical impulse when the gate is opened by hand, this opening must be carried out as with any manual operation.
  • the control of the drive unit also includes protection against jamming of people or objects: as soon as there is resistance to the moving gate, the drive switches briefly to the opposite direction to release this obstacle and then switches off.
  • Fig. 1 shows a sectional view of the lintel over a gate entrance and parts of the ceiling of a building 49 to which a guide rail 7 is attached, in the open profile of which the slats of the gate 3 are guided by means of guide rollers 48, the actual ones shown in FIG 1 not visible idlers, grip the guide rail 7 on the inside of the door and roll on the top 47 of the guide rail 7.
  • a rack 87 is fastened running in parallel, which consists of a strip material standing vertically in profile, which has a toothing 77 on its upper edge. This toothing 77 engages in the pinion, which is arranged on the output shaft 50 of the motor-gear unit 2 in a rotationally fixed manner.
  • the motor-gear unit 2 is on the base plate 5 of the drive unit 1 attached, which in turn is screwed to the gate 3 via spacer elements 34, for example a wooden strip.
  • the motor-gear unit 2 is screwed onto the base plate 5 via a plurality of feet 35, the tap from the bushing 12 via its bevel gear teeth 13 to the bevel pinion 14 and thus the threaded rod between the motor-gear unit 2 and the base plate 5 9 with the nuts 10 running on it.
  • the threaded rod 9 is supported in bearing brackets 15, which are also screwed onto the base plate 5 as an angle profile.
  • the pinion 70 is screwed to a metal bushing 18, which is non-positively attached to the conical seat of the output shaft 50 of the motor-gear unit 2, so that the pinion 70 is arranged in a rotationally fixed manner against the output shaft 50.
  • a bushing 12 While the pinion 70 is placed on the metal bushing 18 from the side facing away from the motor-gear unit 2, a bushing 12 is pushed onto an outer diameter 11 of the metal bushing 18 formed by a shoulder, from the side facing the motor-gearbox unit 2 .
  • the bushing 12 engages with a ring-shaped projection 23 in a corresponding annular groove 22 in the metal bushing 18 and is connected to the metal bushing 18 in a rotationally fixed manner with respect to the metal bushing 18 by, for example, notched nails 26 or other connecting elements.
  • This bushing 12 is just long enough that it protrudes from the metal bushing 18 through the opening 33 of the base plate 5 coaxially to the output shaft 50 back into the housing 4, to the extent that it is on the other end face of the bushing 12 arranged bevel gear teeth 13 just protrudes beyond the base plate 5 in order to allow a bevel pinion 14 to engage in the bevel gear teeth 13.
  • This bevel pinion 14 is located on one end of the threaded rod 9, which is mounted parallel to the base plate 5 and transversely to the output shaft 50 between the motor-gear unit 2 and the base plate 5. Angle pieces screwed onto the base plate 5 can serve as the bearing bracket 15, for example.
  • FIG. 1 one leg of the angle 16 can be seen behind the threaded rod 9, which is better shown in FIG. 2 and prevents the nuts 10 running on the threaded rod 9 from rotating with the threaded rod 9.
  • a board 31 is arranged on corresponding struts of the base plate 5, which carries the electrical components for realizing the control of the entire drive unit, as symbolically shown in FIG. 1.
  • a light source 24 which not only illuminates the components of the drive unit 1 located within the housing 4 during operation of the drive unit, but also emits light through the cover 6 of the drive unit 1, since in the lower area of the cover 6 in the vicinity of the light source 24, a translucent area 25 is arranged in order to illuminate the area below the drive unit 1.
  • the cover 6 is placed on the base plate 5, so that the objects underneath are protected from dirt, etc.
  • FIG. 2 shows a top view of the base plate 5 of the drive unit 1, the motor-gear unit 2 being removed and shown in its original position only in dashed lines around the threaded rods 9 underneath and their tapping from to show the output shaft 50 better.
  • the bushing 12 which is shown in more detail in FIGS. 3a and 3b, extends through the opening 33 of the base plate 5 coaxially to the output shaft 50 through the base plate.
  • the bevel pinion 14 at one end of the threaded rod 9, like the bushing 12, consists of a plastic, preferably polyamide, and is sprayed onto the end of the metallic threaded rod 9, which has a multi-tooth profile.
  • the two limit switches 8 are fastened on one side, which are pressed into the adjustment webs 29 provided for this purpose and then screwed onto the base plate. These limit switches 8 are located at such a distance from the threaded rod 9 that the axially displaceable nuts 10 on the threaded rod 9 actuate them when passing the limit switches 8.
  • the nuts 10 are prevented by an angle 16 on the other side of the threaded rod from rotating with the threaded rod 9, by screwing the angle 16 with its one leg onto the base plate 5 and its other leg projecting parallel to the threaded rod 9 at such a distance that the nuts 10 slide with one of their outer surfaces along the outer surface of this leg of the angle 16 without being able to rotate with the threaded rod.
  • the two legs of the angle 16 are stiffened against one another by struts 27.
  • the desired distance and the desired parallelism of the angle 16 to the threaded rod 9 can be set and, in the event of readjustment of the limit switch positions, ie the position of the nuts 10 on the threaded rod 9, the fastening screws 39 can be loosened somewhat and then the angle 16 so withdrawn far from the threaded rod 9, that a turning of the nuts 10 is possible.
  • the motor-gear unit 2 which is only shown in broken lines in FIG. 2, is located above this limit switch control and is screwed to the base plate 5 via the feet 35.
  • the circuit board 31 for the control of the drive unit 1, which can still be seen in FIG. 1 and is still located above the motor-transmission unit 2, can be seen in FIG. 2, however, a part of the struts 40 carry the board 31 in its complete condition.
  • the motor-transmission unit 2 At the lower end of the motor-transmission unit 2 there is also a light source 24 which lights up when the drive unit 1 is started up. Furthermore, two 12 volt accumulators 21 are arranged on the base plate 5, which are connected in series and are used to supply energy to the motor-transmission unit 2 and the light source 24 and the electromagnet 37.
  • This electromagnet 37 energizes the cable 42, which is connected to the locking mechanism, that is to say the lock, of the gate 3 in such a way that this slide mechanism is unlocked when the electromagnet 37 is tightened.
  • 3a and 3b show the socket 12 in an enlarged detail. From this it can be seen that the bushing 12 can be pushed onto the outer diameter 11 of the metal bushing 18 by the fact that the bushing 12 distributes a plurality of slots 41 from the side with which it is pushed onto the metal bushing 18 has, so that the intermediate segments 42 can bend slightly in order to be able to introduce the annular projection 23 over the outer diameter 11 of the metal bushing 18 and into the annular groove 22.
  • FIG. 1 shows, additional (as only indicated in FIG. 1) notch nails 26, which protrude from the end face of the metal bushing 18 into the end face of the bushing 12, prevent the bushing 12 from rotating relative to the metal bushing 18.
  • an approximately closed clamping ring for example made of spring steel, could in turn be pushed onto the socket 12 after being pushed onto the metal socket 18, preferably for its secure fit in the outer circumference of the socket 12 in the area of the slots 24 an annular groove 43 would be arranged, as shown in Fig. 3a, but not shown in Fig. 1.
  • the diameter of the bushing 12 decreases from the side facing the metal bushing 18 to the other end in order to get by with the smallest possible diameter of the opening 33 in the base plate 5.
  • the pinion teeth 71 of the pinion 70 are made of plastic, preferably polyamide, and can therefore absorb significantly less forces than a toothing made of metal with the same dimensions.
  • the pinion teeth 71 are dimensioned much larger in cross-section, in particular in the area of the tooth heads 78, which is achieved in that the approximately semicircular tooth heads 78 merge into tooth flanks 79 in accordance with an involute toothing.
  • the pinion teeth 71 are dimensioned much larger in cross-section, in particular in the area of the tooth heads 78, which is achieved in that the approximately semicircular tooth heads 78 merge into tooth flanks 79 in accordance with an involute toothing.

Abstract

The invention relates to drive units for the motive operation of horizontally displaceable doors, so-called all-round doors. According to the invention, it is proposed to fasten to the door (3), displaced along a guide rail (7), a drive unit (2) in which in addition to the motor transmission unit (1) there are, among other things the limit switches (8) for cutting off the door (3) in the end positions. The output shaft (50) of the motor transmission unit (2) projects outwards through the base plate (5) of the housing (4) and there carries a pinion (70) which engages into a toothing (77) along the guide rail (7) and which thereby moves the door during the rotation of the output shaft (50). A metal bush (18) is attached on the output shaft (50), for example by means of a conical multi-toothed profile (13). In contrast, the pinion (70) itself can consist, for example, of plastic and is in turn connected fixedly in terms of rotation to the metal bush (18). To compensate the lower strength of the plastic of the pinion (70) in relation to the metal of the toothing, in the toothing form selected there are extremely narrow tooth necks of the metal toothing and wide tooth cross-sections on the pinion (70). Furthermore, a bush (12), for example likewise made of plastic, is pushed onto the metal bush (18) in such a way that it projects back just into the housing (4) axially relative to the output shaft (50) and at this end carries a bevel gear (13). A bevel pinion (14) engages into this and is connected fixedly in terms of rotation to the end of a threaded rod (9), on which nuts (10) are screwed. However, because of an angle piece (16) fastened in parallel, these cannot rotate with the threaded rod (9), but during the rotation of the output shaft (50) are displaced axially on the then likewise rotating threaded rod (9). Thus, these nuts (10) of variable basic position serve as actuating elements for limit switches (8) fastened parallel and next to the threaded rod (9) for cutting off the door (3). <IMAGE>

Description

Die Erfindung betrifft den Antrieb von sogenannten Rundumtoren, als Toren, die aus einer Vielzahl von schmalen, vertikal nebeneinander angeordneten Lamellen bestehen. Zumindest an der Oberseite derartiger Tore befinden sich Rollen, die auf einer Führungsschiene ablaufen, so daß ein solches Tor mit relativ geringem Kraftaufwand horizontal bewegt werden kann. Die einzelnen Lamellen sind gegenseitig ausreichend flexibel verbunden, um das Tor auch um Kurven herum verschieben zu können.The invention relates to the drive of so-called all-round gates, as gates which consist of a multiplicity of narrow, vertically arranged slats. At least on the top of such gates there are rollers that run on a guide rail, so that such a gate can be moved horizontally with relatively little effort. The individual slats are connected to each other with sufficient flexibility to be able to move the door around curves.

Für das motorbetriebene Öffnen und Schließen derartiger Tore sind bisher Antriebseinheiten bekannt, die auf der Innenseite der Tore in der Nähe deren Oberkante befestigt wurden, und über einen Elektromotor eine Antriebsrolle antreiben, welche mit einer Umfangsfläche ausgestattet waren, die einen hohen Reibwert, wie etwa Gummi, aufwiesen. Wurde ein solches Reibrad ausreichend fest auf die Führungsschiene aufgepreßt und angetrieben, so wurde hierdurch das gesamte Tor entlang der Führungsschiene verschoben. Die Anpressung des Reibrades an die Führungsschiene wurde meist dadurch erzielt, daß das Reibrad, meist einschließlich der Motor-Getriebe-Einheit oder gar der ganzen Antriebseinheit, um eine Achse ausserhalb des Reibrades verschwenkbar war, so daß das Eigengewicht dieser Teile oder gar zusätzlich angebrachter Gewichte das Reibrad auf die Führungsschiene preßten. Bei nicht ausreichenden Gewichtskräften wurden ersatzweise auch Elektromagnete beaufschlagt, die mittels eines entsprechenden Hebelarms ebenfalls bei Einschalten des Motors das Reibrad gegen die Führungsschiene preßten.For the motor-driven opening and closing of such gates, drive units have hitherto been known which have been fastened to the inside of the gates in the vicinity of the upper edge thereof and, via an electric motor, drive a drive roller which has been provided with a peripheral surface which has a high coefficient of friction, such as rubber , had. If such a friction wheel was pressed onto the guide rail sufficiently firmly and driven, the entire door was thereby moved along the guide rail. The pressure of the friction wheel on the guide rail was mostly achieved by the fact that the friction wheel, usually including the motor-gear unit or even the entire drive unit, was pivotable about an axis outside the friction wheel, so that the dead weight of these parts or even additional weights attached pressed the friction wheel onto the guide rail. In the event of insufficient weight forces, electromagnets were alternatively applied, which also pressed the friction wheel against the guide rail by means of a corresponding lever arm when the engine was switched on.

Die auf diese Art angetriebenen Tore wurden in ihren Endpositionen, also der geöffneten und der geschlossenen Stellung, über ortsfest am Gebäude installierte Endschalter zum Stillstand gebracht, welche direkt von dem zu bewegenden Tor betätigt wurden. Die Stromversorgung dieser Antriebseinheiten geschah mittels Kabelschleifen.The gates driven in this way were in their end positions, i.e. the open and closed positions, brought to a standstill via fixed limit switches installed on the building, which were operated directly by the gate to be moved. These drive units were powered by means of cable loops.

Derartige Antriebe für rundum laufende Tore bergen jedoch eine ganze Reihe von Nachteilen: Zunächst ist der Reibradantreib prinzipiell störanfällig, da die Anpreßkräfte, die das Reibrad gegen die Führungsschiene drücken, meist nur für optimale oder höchstens durchschnittliche Reibungsverhältnisse zwischen Reibrad und Führungsschiene ausgelegt sind.. Mit der Zeit ergeben sich jedoch Verschmutzungen der Führungsschiene, zu denen noch Kondenswasser oder im schlimmsten Fall Öl- oder Rußreste, beispielsweise aus Dieselabgasen, hinzukommen können, wodurch die Reibung zwischen Reibrad und Führungsschiene drastisch herabgesetzt wird, so daß das Reibrad des öfteren durchdrehte und nicht im Stande war, das Tor zu bewegen.However, such drives for all-round gates have a number of disadvantages: First, the friction wheel drive is in principle susceptible to faults, since the pressure forces that press the friction wheel against the guide rail are usually only designed for optimal or at most average frictional relationships between the friction wheel and the guide rail of time, however, the guide rail becomes soiled, to which condensation or, in the worst case, oil or soot residues, for example from diesel exhaust gases, can be added, as a result of which the friction between the friction wheel and the guide rail is drastically reduced, so that the friction wheel often spins and not in Was able to move the gate.

Zusätzlich mußte bei einem solchen Reibradantrieb wegen der relativ hohen aufzubringenden Kräfte bzw. der zur Aufbringung dieser Kräfte erforderlichen Eigengewichte das aus einzelnen Lamellen bestehende Tor stabiler ausgebildet werden, als es für diese Art von Tore prinzipiell notwendig wäre. Oder anders herum wurden nicht ausreichend stabil ausgebildete lamellenartige Tore durch derartige Reibradantriebe des häufigen verzogen oder gar beschädigt.In addition, with such a friction wheel drive, the gate consisting of individual slats had to be made more stable than would be necessary for this type of gate due to the relatively high forces to be applied or the dead weights required to apply these forces. Or, conversely, slat-like gates of insufficient design were frequently warped or even damaged by such friction wheel drives.

Des weiteren waren selbstverständlich sämtliche ausserhalb der eigentlichen Antriebseinheit liegenden Elemente wie etwa die Endschalter, die meist an den Gebäudewänden befestigt waren und von dem Tor in seiner vollständig geöffneten bzw. geschlossenen Stellung betätigt wurden und auch die Kabelschleifen, die der Stromzuführung zur Antriebseinheit dienten und deren relativ großen Verfahrweg erlauben mussten, für Beschädigungen prädestiniert.Furthermore, of course, were all the elements outside the actual drive unit, such as the limit switches, which were mostly attached to the building walls and were actuated by the gate in its fully open or closed position, as well as the cable loops that were used to supply power to the drive unit and their had to allow relatively large travel, predestined for damage.

Es ist daher die Aufgabe gemäß der Erfindung die Nachteile des Standes der Technik zu vermeiden, insbesondere den kräfteintensiven Reibradantrieb zu ersetzen und möglichst viele für den motorischen Antrieb des Tores sowie dessen Steuerung notwendige Elemente innerhalb des schützenden Gehäuses der Antriebseinheit unterzubringen wobei selbstverständlich der konstruktive Aufwand und auch die Abmessungen der Anlage möglichst geringgehalten werden sollen.It is therefore the object according to the invention to avoid the disadvantages of the prior art, in particular to replace the force-intensive friction wheel drive and to accommodate as many elements as possible necessary for the motor drive of the door and its control within the protective housing of the drive unit, of course the construction effort and the dimensions of the system should also be kept as small as possible.

Die hohen Andruckkräfte des Reibradantriebes werden vermieden, indem anstelle eines Reibrades ein Zahnrad eingesetzt wird, welches in eine entlang der Führungsschiene angebrachte, annähernd vertikal verlaufende Zahnstange eingreift. Ein Durchrutschen wäre hier nur möglich, wenn die Kraft des Zahnradantriebs ausreicht, um das Zahnrad samt Antriebseinheit und daran hängendem Tor über die Zähne der Zahnstange hinaus anzuheben. Dies kann durch ein einfaches Untergreifen der Führungsschiene von der Antriebseinheit aus vermieden werden. Die zum Einsatz kommende Zahnstange besteht meist aus einem einseitig gezahnten, nur wenige Millimeter starkem Bandmaterial, welches ausreichend flexibel ist, um am besten direkt an der Führungsschiene, einstückig oder mehrstückig, angeordnet zu werden. Um zu verhindern, daß das Ritzel quer zur Zahnstange ausser Eingriff gerät, muß das Ritzel wesentlich breiter ausgebildet sein als die Zahnstange, wobei es in der Praxis etwa zehnmal so breit ist, wie die Zahnstange. Auf diese Art und Weise können auch größere Ungenauigkeiten im Prallellauf zwischen Ritzel, also dem Tor insgesamt, und der Führungsschiene, beispielsweise im Bereich der Kurven, verkraftet werden. Natürlich kommt es bei einem solchen Querversatz zu einem Schaben in Querrichtung zwischen Ritzel und Zahnstange.The high pressure forces of the friction wheel drive are avoided by using a toothed wheel instead of a friction wheel, which meshes with an approximately vertically extending toothed rack attached along the guide rail. Slipping would only be possible here if the force of the gear drive is sufficient to lift the gear together with the drive unit and the gate attached to it beyond the teeth of the rack. This can be avoided by simply reaching under the guide rail from the drive unit. The rack that is used usually consists of a single-sided toothed, only a few millimeters thick band material, which is sufficiently flexible to be best arranged directly on the guide rail, in one piece or in several pieces. In order to prevent the pinion from disengaging transversely to the rack, the pinion must be designed to be substantially wider than the rack, and in practice it is about ten times as wide as the rack. In this way, greater inaccuracies in the impact run between the pinion, that is to say the gate as a whole, and the guide rail, for example in the region of the curves, can be coped with. Of course, with such a transverse offset, scraping occurs in the transverse direction between the pinion and the rack.

Dies wird jedoch aufgrund einer geeigneten Materialwahl und Verzahnungsform ohne das Auftreten irgendwelcher Nachteile kompensiert.However, this is compensated for by a suitable choice of material and toothing shape without the occurrence of any disadvantages.

Vorteilhafterweise wird das Ritzel aus Kunststoff gefertigt, nämlich aus Polyamid, was nicht nur ein leises Ablaufen des Ritzels auf der Zahnstange gewährleistet, sondern auch jegliche Schmierung zwischen dem Kunststoffritzel und der metallenen Zahnstange überflüssig macht.The pinion is advantageously made of plastic, namely of polyamide, which not only ensures that the pinion runs quietly on the rack, but also makes any lubrication between the plastic pinion and the metal rack unnecessary.

Im Hinblick auf das wesentlich härtere Material der Zahnstange im Vergleich zum Ritzel war es wünschenswert, eine Verzahnungsform zu finden, die sowohl diesen unterschiedlichen Materialeigenschaften Rechnung trägt als auch ein Abrollen des Ritzels auf der Zahnstange unter größeren Abweichungen hinsichtlich der optimalen Werte von Achsabstand, Querversatz und Parallelität der Zahnflanken von Ritzel und Zahnstange ohne größere Nachteile ermöglicht. Aus diesem Grund wurde bei der Zahnstange ein Profil mit geraden Zahnflanken gewählt, wobei der Zahngrund kreisbogenförmig, also annähernd halbkreisförmig, ausgebildet ist, aufgrund der geraden Zahnflanken dagegen ein sehr schmaler und beinahe spitzer Zahnkopf entsteht. Dieser schmale Zahnkopf ist aufgrund der Härte des Zahnstangenmaterials durchaus in der Lage, die auftretenden Kräfte aufzunehmen.In view of the much harder material of the toothed rack compared to the pinion, it was desirable to find a toothing form that takes into account both these different material properties and a rolling of the pinion on the toothed rack with larger deviations with regard to the optimal values of center distance, transverse offset and Parallelism of the tooth flanks of the pinion and rack enables major disadvantages. For this reason, a profile with straight tooth flanks was chosen for the toothed rack, the tooth base being designed in the form of a circular arc, that is to say approximately semicircularly, but because of the straight tooth flanks a very narrow and almost pointed tooth head is created. Due to the hardness of the toothed rack material, this narrow tooth head is able to absorb the forces that occur.

Im Gegenzug ermöglicht jedoch diese Zahnform der Zahnstange eine Zahnform beim Ritzel, bei der die Dicke der Zähne insgesamt und besonders im Bereich des Zahnkopfes sehr groß ist. Obwohl die Zahnflanken des Ritzels eine Evolvente darstellen, ergibt sich aufgrund der halbkreisförmigen Gestalt des Zahnkopfes ein vom Zahngrund bis zum Zahnkopf sich nur unwesentlich verjüngender Zahnquerschnitt. Dies entspricht der geringeren Belastbarkeit des Kunststoffes des Ritzels gegenüber dem Metall der Zahnstange und ergibt insgesamt dennoch ein sauberes Abrollen der Flanken des Ritzels auf denen der Zahnstange.In return, however, this tooth form of the rack enables a tooth form on the pinion in which the thickness of the teeth as a whole and especially in the region of the tooth head is very large. Although the tooth flanks of the pinion represent an involute, the semicircular shape of the tooth head results in a tooth cross-section which tapers only slightly from the tooth base to the tooth head. This corresponds to the lower resilience of the plastic of the pinion compared to the metal of the rack and still results in a clean rolling of the flanks of the pinion on those of the rack.

Da somit die beim Reibradantrieb notwendigen großen Anpreßkräfte nicht mehr auf das Tor selbst übertragen werden, kann das Tor insgesamt weniger massiv und damit leichter ausgebildet werden, was wiederum die für den Antrieb des Tores benötigten Kräfte reduziert, und somit eine kleinere und leichtere Ausbildung der Antriebseinheit beim beschriebenen Zahnstangenantrieb ermöglicht. Die erfindungsgemäße Antriebseinheit hat mit den be kannten Antriebseinheiten gemeinsam, daß sie üblicherweise ein Gehäuse aufweist, welches aus einer Grundplatte einerseits besteht, auf der sämtliche innerhalb des Gehäuses unterzubringenden Komponenten befestigt werden, und einem Deckel, der auf der Grundplatte befestigt wird, und die in diesem Gehäuse untergebrachten Teile vor Verschmutzung schützt. Die Abtriebswelle der auf der Grundplatte innerhalb des Gehäuses montierten Motor-Getriebe-Einheit erstreckt sich durch eine Öffnung in der Grundplatte aus dem Gehäuse nach aussen, wo das auf der Zahnstange ablaufende Ritzel auf der Abtriebswelle befestigt wird.Since the large contact forces required for the friction wheel drive are no longer transmitted to the door itself, the door can be less solid overall and therefore lighter be trained, which in turn reduces the forces required to drive the gate, and thus enables a smaller and lighter design of the drive unit in the rack and pinion drive described. The drive unit according to the invention has in common with the known drive units that it usually has a housing which consists of a base plate on the one hand, on which all components to be accommodated within the housing are fastened, and a cover which is fastened to the base plate, and which in parts housed in this housing protects against contamination. The output shaft of the motor-gear unit mounted on the base plate inside the housing extends through an opening in the base plate outwards from the housing, where the pinion running on the rack is attached to the output shaft.

Da die erfindungsgemäße Antriebseinheit nicht mehr in jeder Torstellung mit dem Stromnetz verbunden sein soll, ist im Gehäuse zusätzlich wenigstens ein Akkumulator untergebracht, welcher den Elektromotor auch ohne Verbindung zum St romnetz mit Energie versorgt. Dieser Akkumulator ist mit Kontaktstellen ausserhalb des Gehäuses, beispielsweise an der Stirnseite des Tores, verbunden, welche über ortsfest am Gebäude angebrachte Gegenkontakte nur dann mit dem Stromnetz zum Nachladen in Verbindung steht, wenn sich das Tor, je nach Anbringung der Gegenkontakte, in der vollständig geöffneten oder geschlossenen Position befindet. Auf diese Art und Weise werden die über weite Bereiche freihängenden Kabelschleifen zum Nachführen der Stromkabel mit der sich bewegenden Antriebseinheit vermieden, die sowohl leicht beschädigt werden können, als auch aufgrund der ständigen Verwindung und zusätzlichen Umweltbelastungen schnell altern.Since the drive unit according to the invention is no longer to be connected to the power supply in every door position, at least one accumulator is additionally accommodated in the housing, which also supplies the electric motor with energy without being connected to the power supply. This accumulator is connected to contact points outside the housing, for example on the front side of the gate, which is only connected to the power supply for recharging via mating contacts attached to the building when, depending on the mating contacts, the gate is completely closed open or closed position. In this way, the freely hanging cable loops for guiding the power cables with the moving drive unit, which are both easily damaged and quickly age due to the constant twisting and additional environmental pollution, are avoided.

Da auch die Endschalter zum Abschalten des Torantriebes in der geöffneten bzw. geschlossenen Stellung des Tores im schützenden Gehäuse der Antriebseinheit untergebracht werden sollen, können diese Endschalter, die sich ja aufgrund der Montage des Gehäuses am Tor selbst mit dem Tor mitbewegen, nicht mehr durch die tatsächliche Torbewegung selbst ausgelöst werden. Es ist deshalb notwendig, die vom Bewegen des Tores aus einer definierten Anfangslage aus erfolgenden Umdrehungen der Abtriebswelle der Motorgetriebeeinheit oder des Ritzels abzugreifen und mit diesem Abgriff die Endschalter innerhalb des Gehäuses zu betätigen.Since also the limit switches for switching off the door operator in the open or closed position of the door in the protective housing of the drive unit, these limit switches, which move with the gate itself due to the mounting of the housing on the gate, can no longer be triggered by the actual gate movement itself. It is therefore necessary to tap the revolutions of the output shaft of the motor gear unit or the pinion that occur when the gate is moved from a defined initial position and to actuate the limit switches within the housing with this tap.

Diese Abgriff kann ausserhalb des Gehäuses, etwa in der Nähe des Ritzels erfolgen, was zur Folge hat, daß eine Rückführung dieses Abgriffes ins Gehäuse zu den Endschaltern hin notwendig ist. Erfolgt der Abgriff hingegen an der Abtriebswelle innerhalb des Gehäuses, so bedeutet dies eine Montage der Motor-Getriebe-Einheit nicht direkt auf der Grundplatte, sondern vermittels von Distanzteilen an der Grundplatte, um noch genügend Platz zwischen Motor-Getriebe-Einheit und Grundplatte zum Abgriff der Drehbewegung zu den Endschaltern hin zu schaffen.This tap can take place outside the housing, for example in the vicinity of the pinion, with the result that a return of this tap into the housing to the limit switches is necessary. If, on the other hand, the output shaft is tapped within the housing, this means that the motor-gear unit is not mounted directly on the base plate, but by means of spacers on the base plate in order to provide enough space between the motor-gear unit and the base plate for tapping to create the rotary movement towards the limit switches.

Der Abgriff von der Abtriebswelle bzw. vom Ritzel soll auf eine Gewindestange erfolgen, auf der Elemente mit einem entsprechenden Innengewinde aufgeschraubt sind, welche bei einer Drehung der Gewindestange am Mitdrehen gehindert werden und dadurch entlang der Gewindestange verschraubt werden, bis sie in einer Position, die der geöffneten bzw. geschlossenen Stellung des Tores entsprechen, jeweils einen der beiden Endschalter erreichen und betätigen. Da die Einstellung dieser Elemente erst nach Montage der Antriebseinheit vor Ort erfolgen kann, muß einerseits eine möglichst einfache Verstellung und andererseits eine möglichst genaue Umsetzung der Torbewegung erreicht werden.The tapping from the output shaft or pinion should take place on a threaded rod on which elements with a corresponding internal thread are screwed on, which are prevented from rotating when the threaded rod rotates and are thus screwed along the threaded rod until they are in a position which correspond to the open or closed position of the gate, each reach and operate one of the two limit switches. Since these elements can only be adjusted on site after the drive unit has been installed, adjustment must be as simple as possible on the one hand and conversion of the door movement as precise as possible on the other hand.

Da die Verwendung genormter Zukaufteile wesentlich preisgünstiger ist, als die Verwendung selbstgefertigter Spezialteile, ist die Verwendung handelsüblicher Muttern als auf der Gewindestange zu verschraubende Elemente besonders vorteilhaft. Diese Muttern werden dadurch am Mitdrehen mit der Gewindestange gehindert, daß ein Winkelprofil mit seinem einen Schenkel so parallel zur Gewindestange auf der Grundplatte befestigt wird, daß die Muttern mit einer ihrer Aussenflächen an dem Schenkel des Profils entlanggleiten, jedoch ein Drehen der Muttern unmöglich ist. Werden im anderen Schenkel des Winkelprofils Langlöcher mit einer Längserstreckung quer zur Längsachse der Gewindestange vorgesehen, durch welche hindurch die Verschraubung dieses Winkels mit der Grundplatte erfolgt, so ist bei Lösen dieser Muttern ein ausreichendes Abrücken des Winkels von der Gewindestange möglich, um die Muttern auf der Gewindestange entsprechend der gewünschten Grundeinstellung verschrauben zu können.Since the use of standardized purchased parts is much cheaper than the use of self-made special parts, the use of commercially available nuts is the same as on the Threaded rod elements to be screwed are particularly advantageous. These nuts are prevented from rotating with the threaded rod in that an angular profile is fastened with its one leg parallel to the threaded rod on the base plate in such a way that the nuts slide with one of their outer surfaces along the leg of the profile, but rotation of the nuts is impossible. If elongated holes with a longitudinal extension transverse to the longitudinal axis of the threaded rod are provided in the other leg of the angle profile, through which the screwing of this angle to the base plate takes place, then when these nuts are loosened, the angle can be sufficiently moved away from the threaded rod to hold the nuts on the To be able to screw the threaded rod according to the desired basic setting.

Um das Gehäuse der Antriebseinheit möglichst klein gestalten zu können, wurde der Abgriff von der Ritzeldrehung ausserhalb des Gehäuses verwirklicht, mit der Folge, daß eine Rückführung des Abgriffs in das Gehäuse hinein zu der die Endschalter betätigenden Gewindestange notwendig ist.In order to make the housing of the drive unit as small as possible, the tapping by the pinion rotation was realized outside the housing, with the result that a return of the tapping into the housing to the threaded rod actuating the limit switch is necessary.

Das Ritzel selbst besteht aufgrund der üblichen Befestigung auf der Abtriebswelle der Motor-Getriebe-Einheit mittels Kegelsitz nicht ganz aus Kunststoff, da dieser der Preßbelastung auf Dauer nicht spielfrei gewachsen wäre. Vielmehr wird eine Metallbuchse auf dem Kegelsitz der Abriebswelle befestigt, mit welcher das aus Kunststoff gefertigte Ritzel an mehreren Stellen verschraubt wird. Der Abgriff vom Ritzel zur Gewindestange für die Endschalter hin erfolgt nun dadurch, daß auf einen durch einen Absatz gebildeten, zur Motor-Getriebe-Einheit hinweisenden Aussenumfang der Metallbuchse eine Buchse aufgeschoben wird, die nach dem Aufschieben mittels eines an ihrem inneren Umfang angeordneten Ringwulstes in eine entsprechende Nut am Aussenumfang der Metallbuchse eingreift. Das Aufschieben der Buchse wird durch das mehrfache axiale Schlitzen der Buchse über den Umfang möglich. Beim Aufschieben weitet sich die Buchse und federt danach elastisch in die Ausgangsform zurück. Zur zusätzlichen Sicherung werden ein oder mehrere Kerbnägel axial durch die Metallbuchse in die Buchse hinein eingebracht. Da das Material der Buchse beim Aufschieben nachgeben und anschließend wieder zurückfedern muß, kann die Buchse aus Kunststoff, vorzugsweise aus Polyamid, gefertigt werden, was Kostenvorteile insbesondere im Hinblick auf die auf der Buchse anzubringende Kegelradverzahnung bringt.The pinion itself is not entirely made of plastic due to the usual attachment to the output shaft of the motor-gear unit by means of a conical seat, since this would not be able to cope with the pressure load in the long run without play. Rather, a metal bushing is attached to the tapered seat of the abrasion shaft, with which the pinion made of plastic is screwed in several places. The tapping from the pinion to the threaded rod for the limit switches is now carried out in that a socket is pushed onto an outer circumference of the metal bushing which is formed by a shoulder and points towards the motor-gear unit and which, after being pushed on, by means of an annular bead arranged on its inner circumference a corresponding groove engages on the outer circumference of the metal bushing. The pushing on of the socket is done by the multiple axial slits of the bushing possible over the circumference. When pushed on, the bushing widens and then springs back elastically into its original shape. For additional security, one or more notch nails are inserted axially through the metal bushing into the bushing. Since the material of the bushing has to give way when pushed on and then spring back again, the bushing can be made of plastic, preferably of polyamide, which brings cost advantages in particular with regard to the bevel gear teeth to be fitted on the bushing.

Da der Aussenumfang an der Metallbuchse, auf den die Buchse aufgeschoben wird, zum Gehäuse der Motorgetriebe-Einheit hinweist, wird die axiale Länge der Buchse so gewählt, daß sie sich durch die Grundplatte hindurch gerade bis in das Innere des Gehäuses erstreckt. An diesem Ende ist in die Buchse eine Kegelradverzahnung eingearbeitet, welche mit einem Kegelritzel kämmt, welches sich am Ende der Gewindestange befindet, die parallel zur Grundplatte zwischen Grundplatte und Motor-Getriebe-Einheit, also quer zur Abtriebswelle des Motors angeordnet und gelagert ist. Das Kegelritzel wird dabei vorzugsweise ebenfalls aus Plastikmaterial hergestellt und für den Fall, das die Gewindestange aus Metall besteht, auf das mit einem Vielzahnprofil versehene Ende der Gewindestange direkt aufgespritzt.Since the outer circumference on the metal bush, onto which the bush is pushed, points to the housing of the motor gear unit, the axial length of the bush is selected such that it extends straight through the base plate into the interior of the housing. At this end, a bevel gear toothing is worked into the bushing, which meshes with a bevel pinion, which is located at the end of the threaded rod, which is arranged and mounted parallel to the base plate between the base plate and the motor-gearbox unit, i.e. transversely to the output shaft of the motor. The bevel pinion is preferably also made of plastic material and, in the event that the threaded rod is made of metal, is sprayed directly onto the end of the threaded rod provided with a multi-tooth profile.

Dies bietet eine ganze Reihe von Vorteilen: Bezüglich der Buchse bewirkt bereits der Umstand, daß die Kegelradverzahnung zum Abgriff für die Endschalter und die Metallbuchse nicht einteilig ausgebildet sind, daß als Metallbuchse mit Kegelsitz ein herkömmliches, billiges Zukaufteil verwendet werden kann. Da für den Abtrieb zur Ansteuerung der Endschalter nur sehr geringe Kräfte übertragen werden müssen, ist die Ausbildung dieser Verzahnung aus einem Plastikmaterial völlig ausreichend. Die Herstellung aus einem solchen Material kommt jedoch wesentlich billiger als die Herstellung aus Metall, da abgesehen vom Spritzen des Plastikmaterials keine weiteren Nachbearbeitungen mehr erforderlich sind. Darüber hinaus bietet das Plastikmaterial einen Gewichtsvorteil und es ist keine zusätzliche Lagerung der Buchse in der Grundplatte notwendig, was bedeutet, daß sich die Buchse koaxial zur Abtriebswelle der Motor-Getriebe-Einheit durch die Grundplatte hindurch in das Gehäuse hinein erstreckt. Die Kegelradverzahnung auf der Buchse ragt dabei gerade über die Grundplatte hinaus, so daß die abgreifende Gewindestange mit aufgesetztem Kegelritzel so niedrig wie möglich über der Grundplatte gelagert werden kann. Die Lagerung der metallenen Gewindestange geschieht dabei konventionell in Lagerböcken, die auf der Grundplatte beispielsweise aufgeschraubt werden.This offers a whole series of advantages: With regard to the bushing, the fact that the bevel gear teeth for tapping for the limit switches and the metal bushing are not formed in one piece, that a conventional, inexpensive purchased part can be used as the metal bushing with a cone seat. Since only very small forces have to be transmitted for the output to control the limit switches, the formation of this toothing from a plastic material is completely sufficient. However, the production from such a material is much cheaper than the production from metal, since apart from spraying the plastic material, no further post-processing is required. In addition, the plastic material offers a weight advantage and no additional storage of the bushing in the base plate is necessary, which means that the bushing extends coaxially to the output shaft of the motor-gear unit through the base plate into the housing. The bevel gear teeth on the socket protrude just beyond the base plate so that the gripping threaded rod with the bevel pinion attached can be stored as low as possible above the base plate. The metal threaded rod is conventionally stored in bearing blocks that are screwed onto the base plate, for example.

Durch diese sehr flache Ausbildung des Abgriffs für die Endschalter kann die Motor-Getriebe-Einheit direkt auf die Grundplatte aufgesetzt werden, ohne daß dazwischen Distanzteile angeordnet werden müssen. Dieses Distanzteil würde nicht nur größere Abmessungen des gesamten Gehäuses sondern auch einen Gewichtszuwachs mit sich bringen, da dieses Distanzteil normalerweise aus Metall gefertigt sein muß, um bei Erhitzung des Motors, beispielsweise im Falle der Überlastung, eine ausreichende Wärmeabgabe durch dieses Distanzteil zu erreichen. Wäre dieses Distanzteil dagegen aus Polystyrol, so würde im Falle der Erhitzung des Motors das Distanzteils eventuell wegschmelzen und für den Fall, daß die Antriebseinheit dennoch in Betrieb gesetzt würde, eine starke Beschädigung der gesamten Antriebseinheit nach sich ziehen.Due to this very flat design of the tap for the limit switches, the motor-gear unit can be placed directly on the base plate without spacers having to be arranged in between. This spacer would not only bring larger dimensions of the entire housing but also an increase in weight, since this spacer normally has to be made of metal in order to achieve sufficient heat dissipation through this spacer when the motor is heated, for example in the event of an overload. If, on the other hand, this spacer were made of polystyrene, the spacer would possibly melt away if the motor were heated and, if the drive unit was nevertheless put into operation, would severely damage the entire drive unit.

Weiterhin ist in der erfindungsgemäßen Antriebseinheit eine Beleuchtung untergebracht, welche bei jedem Impuls, die die Antriebseinheit enthält, eingeschaltet wird, so daß nicht nur bei abgenommenem Deckel die Funktion der Antriebseinheit in Betrieb auch bei dunkler Umgebung kontrolliert werden kann, sondern zusätzlich aufgrund einer speziellen Ausbildung des Deckels der Antriebseinheit eine Beleuchtung des darunterbefindlichen Bereiches gegeben ist. Zu diesem Zweck ist der Deckel in seinem unteren Bereich nicht waagerecht, sondern schräg ausgebildet, und mit einem wenigstens teilweise lichtdurchlässigen Bereich ausgestattet, um das Licht der innerhalb des Gehäuses angeordneten Lichtquelle hindurchtreten zu lassen.Furthermore, in the drive unit according to the invention there is a lighting which is switched on with every impulse which contains the drive unit, so that the function of the drive unit in operation can be checked not only when the cover is removed, but also in a dark environment, but also because of a special design the cover of the drive unit is illuminated by the one below Range is given. For this purpose, the cover is not formed horizontally in its lower area, but rather at an angle, and is equipped with an at least partially translucent area in order to let the light of the light source arranged inside the housing pass through.

Ein weiteres Problem bei motorisch angetriebenen Rundumtoren war das Aufschieben von Hand sowie die Verhinderung des Einquetschens von Personen oder Gegenständen bei in Betrieb gesetzter Schließbewegung.Another problem with motorized all-round gates was pushing open by hand and preventing people or objects from being crushed when the closing movement was in operation.

Das Öffnen von Hand war beim Stand der Technik dadurch möglich, daß das Reibrad ausser Eingriff der Führungsleiste gebracht wurde, was aufgrund der wirkenden Gewichtskräfte oft umständlich war.In the prior art, manual opening was possible in that the friction wheel was disengaged from the guide bar, which was often cumbersome due to the acting weight forces.

Im vorliegenden Fall kann ggfs. nach Entriegeln des Torschlosses, das Rundumtor ohne Veränderungen an der Antriebseinheit von Hand aufgeschoben werden, da die Motor-Getriebe-Einheit nicht selbsthemmend ausgebildet ist. Hierzu bietet es sich an, das in der Getriebeeinheit enthaltene Schneckengetriebe mehrgängig auszubilden, d.h., daß die Steigung der Schnecke so groß ist, daß jeweils mehrere Gewindegänge der Schnecke gleichzeitig am Schneckenrad in Eingriff sind.In the present case, after unlocking the gate lock, the all-round door can be pushed open by hand without changes to the drive unit, since the motor-gear unit is not designed to be self-locking. For this purpose, it is advisable to design the worm gear contained in the gear unit to have multiple threads, i.e. that the pitch of the worm is so large that several threads of the worm are simultaneously engaged on the worm wheel.

Die Betätigung des Türschlosses, eines Riegels oder ähnliches, muß deshalb von Hand erfolgen, weil bei motorischem Öffnen des Tores gleichzeitig mit dem Inbetriebsetzen der Motorgetriebe-Einheit auch ein Elektromagnet im Inneren der Antriebseinheit aktiviert wird, welcher eine aus dem Gehäuse nach aussen ragende Befestigungsvorrichtung z.B. einen Seilzug oder eine Befestigungsstange anzieht, welche mit dem Türriegel verbunden ist. Da bei einem Öffnen des Tores von Hand kein elektrischer Impuls erfolgt, muß dieses Öffnen wie bei jedem Handbetrieb selbst durchgeführt werden.The operation of the door lock, a bolt or the like must be done by hand, because when the door is opened when the motor is opened, an electromagnet is activated inside the drive unit at the same time as the motor gear unit is started, which, for example, has a fastening device protruding outwards from the housing pulls a cable or a fastening rod which is connected to the door latch. Since there is no electrical impulse when the gate is opened by hand, this opening must be carried out as with any manual operation.

Die Steuerung der Antriebseinheit enthält auch die Sicherung gegen das Einklemmen von Personen oder Gegenständen: Sobald sich dem bewegenden Tor ein Widerstand entgegenstellt, schaltet der Antrieb kurz auf Gegenrichtung zum Lösen von diesem Hindernis und schaltet dann ab.The control of the drive unit also includes protection against jamming of people or objects: as soon as there is resistance to the moving gate, the drive switches briefly to the opposite direction to release this obstacle and then switches off.

Eine Ausführungsform ist anhand der Figuren im folgenden beispielhaft näher beschrieben. Es zeigen

Fig. 1
eine gesamte Schnittdarstellung der am Tor befestigten Antriebseinheit ,
Fig. 2
eine Draufsicht auf die Grundplatte der Antriebseinheit einschließlich der wesentlichen, darauf aufgebrachten Komponenten,
Fig. 3
Front- und Schnittdarstellungen der die Kegelradverzahnung tragenden Buchse,
Fig. 4
eine Detaildarstellung des in die Zahnstange eingreifenden Ritzels,
An embodiment is described in more detail below by way of example with reference to the figures. Show it
Fig. 1
an overall sectional view of the drive unit attached to the gate,
Fig. 2
a plan view of the base plate of the drive unit including the essential components applied thereon,
Fig. 3
Front and sectional views of the bush bearing the bevel gear teeth,
Fig. 4
a detailed representation of the pinion engaging in the rack,

Fig. 1 zeigt in einer Schnittdarstellung den Sturz über einer Toreinfahrt sowie Teile der Decke eines Gebäudes 49, an dem eine Führungsschiene 7 befestigt ist, in dessen offenem Profil die Lamellen des Tores 3 mittels Führungsrollen 48 geführt werden, wobei die eigentlichen, in der Fig. 1 nicht sichtbaren Tragrollen, die Führungsschiene 7 auf der Torinnenseite umgreifen und auf der Oberseite 47 der Führungsschiene 7 abrollen. An der Führungsschiene 7 ist eine Zahnstange 87 parallellaufend befestigt, die aus einem im Profil senkrecht stehenden Bandmaterial besteht, welches an seiner Oberkante eine Verzahnung 77 aufweist. Diese Verzahnung 77 greift in das Ritzel ein, welches auf der Abtriebswelle 50 der Motor-Getriebe-Einheit 2 drehfest angeordnet ist. Die Motor-Getriebe-Einheit 2 ist wie alle anderen Komponenten der Antriebseinheit auf der Grundplatte 5 der Antriebseinheit 1 befestigt, welche ihrer seits über Distanz-Elemente 34 z.B.eine Holzleiste am Tor 3 verschraubt ist. Die Motor-Getriebe-Einheit 2 ist über mehrere Füße 35 auf der Grundplatte 5 verschraubt, wobei sich zwischen der Motor-Getriebe-Einheit 2 und der Grundplatte 5 der Abgriff von der Buchse 12 über deren Kegelradverzahnung 13 auf das Kegelritzel 14 und damit die Gewindestange 9 mit den darauf laufenden Muttern 10 befindet. Die Gewindestange 9 ist dabei in Lagerbücken 15 gelagert, die als Winkelprofil ebenfalls auf der Grundplatte 5 aufgeschraubt sind. Das Ritzel 70 ist mit einer Metallbuchse 18 verschraubt, welche auf den Kegelsitz der Abtriebswelle 50 der Motor-Getriebe-Einheit 2 kraftschlüssig befestigt wird, so daß das Ritzel 70 gegen die Abtriebswelle 50 drehfest angeordnet ist.Fig. 1 shows a sectional view of the lintel over a gate entrance and parts of the ceiling of a building 49 to which a guide rail 7 is attached, in the open profile of which the slats of the gate 3 are guided by means of guide rollers 48, the actual ones shown in FIG 1 not visible idlers, grip the guide rail 7 on the inside of the door and roll on the top 47 of the guide rail 7. On the guide rail 7, a rack 87 is fastened running in parallel, which consists of a strip material standing vertically in profile, which has a toothing 77 on its upper edge. This toothing 77 engages in the pinion, which is arranged on the output shaft 50 of the motor-gear unit 2 in a rotationally fixed manner. Like all other components of the drive unit, the motor-gear unit 2 is on the base plate 5 of the drive unit 1 attached, which in turn is screwed to the gate 3 via spacer elements 34, for example a wooden strip. The motor-gear unit 2 is screwed onto the base plate 5 via a plurality of feet 35, the tap from the bushing 12 via its bevel gear teeth 13 to the bevel pinion 14 and thus the threaded rod between the motor-gear unit 2 and the base plate 5 9 with the nuts 10 running on it. The threaded rod 9 is supported in bearing brackets 15, which are also screwed onto the base plate 5 as an angle profile. The pinion 70 is screwed to a metal bushing 18, which is non-positively attached to the conical seat of the output shaft 50 of the motor-gear unit 2, so that the pinion 70 is arranged in a rotationally fixed manner against the output shaft 50.

Während das Ritzel 70 von der der Motor-Getriebe-Einheit 2 abgewandten Seite auf die Metallbuchse 18 aufgesetzt ist, ist auf einen durch einen Absatz gebildeten Aussendurchmesser 11 der Metallbuchse 18, von der der Motor-Getriebe-Einheit 2 zugewandten Seite eine Buchse 12 aufgeschoben. Die Buchse 12 greift mit einem ringförmigen Vorsprung 23 in eine entsprechende Ringnut 22 der Metallbuchse 18 ein und wird gegenüber der Metallbuchse 18 durch beispielsweise Kerbnägel 26 oder andere Verbindungselemente mit der Metallbuchse 18 drehfest verbunden.While the pinion 70 is placed on the metal bushing 18 from the side facing away from the motor-gear unit 2, a bushing 12 is pushed onto an outer diameter 11 of the metal bushing 18 formed by a shoulder, from the side facing the motor-gearbox unit 2 . The bushing 12 engages with a ring-shaped projection 23 in a corresponding annular groove 22 in the metal bushing 18 and is connected to the metal bushing 18 in a rotationally fixed manner with respect to the metal bushing 18 by, for example, notched nails 26 or other connecting elements.

Diese Buchse 12 ist gerade so lang, daß sie von der Metallbuchse 18 aus wieder durch die Öffnung 33 der Grundplatte 5 koaxial zur Abtriebswelle 50 hindurch zurück in das Gehäuse 4 ragt, und zwar gerade so weit, daß die auf der anderen Stirnseite der Buchse 12 angeordnete Kegelradverzahnung 13 gerade über die Grundplatte 5 hinausragt, um ein Eingreifen eines Kegelritzels 14 in die Kegelradverzahnung 13 zu ermöglichen. Dieses Kegelritzel 14 befindet sich auf dem einen Ende der Gewindestange 9, die parallel zur Grundplatte 5 und quer zur Abtriebswelle 50 zwischen der Motor-Getriebe-Einheit 2 und der Grundplatte 5 gelagert ist. Als Lagerbücke 15 können beispielsweise auf die Grundplatte 5 aufgeschraubte Winkelstücke dienen.This bushing 12 is just long enough that it protrudes from the metal bushing 18 through the opening 33 of the base plate 5 coaxially to the output shaft 50 back into the housing 4, to the extent that it is on the other end face of the bushing 12 arranged bevel gear teeth 13 just protrudes beyond the base plate 5 in order to allow a bevel pinion 14 to engage in the bevel gear teeth 13. This bevel pinion 14 is located on one end of the threaded rod 9, which is mounted parallel to the base plate 5 and transversely to the output shaft 50 between the motor-gear unit 2 and the base plate 5. Angle pieces screwed onto the base plate 5 can serve as the bearing bracket 15, for example.

In Fig. 1 ist hinter der Gewindestange 9 noch ein Schenkel des Winkels 16 zu erkennen, der besser in Fig. 2 dargestellt ist und die auf der Gewindestange 9 laufenden Muttern 10 am Mitdrehen mit der Gewindestange 9 hindert. In Axialrichtung oberhalb der Motor-Getriebe-Einheit 2 ist an entsprechenden Verstrebungen der Grundplatte 5 eine Platine 31 angeordnet, die die elektrischen Bausteine zur Verwirklichung der Steuerung der gesamten Antriebseinheit trägt, wie in Fig. 1 symbolisch dargestellt.In FIG. 1, one leg of the angle 16 can be seen behind the threaded rod 9, which is better shown in FIG. 2 and prevents the nuts 10 running on the threaded rod 9 from rotating with the threaded rod 9. In the axial direction above the motor-gear unit 2, a board 31 is arranged on corresponding struts of the base plate 5, which carries the electrical components for realizing the control of the entire drive unit, as symbolically shown in FIG. 1.

Im unteren Bereich des Gehäuses 4 befindet sich weiterhin eine Lichtquelle 24, die nicht nur die innerhalb des Gehäuses 4 liegenden Komponenten der Antriebseinheit 1 während des Betriebes der Antriebseinheit beleuchtet, sondern auch durch den Deckel 6 der Antriebseinheit 1 hindurch Licht abgibt, da im unteren Bereich des Deckels 6 in der Nähe der Lichtquelle 24 ein lichtdurchlässiger Bereich 25 angeordnet ist, um den Bereich unterhalb der Antriebseinheit 1 zu erleuchten.In the lower area of the housing 4 there is also a light source 24, which not only illuminates the components of the drive unit 1 located within the housing 4 during operation of the drive unit, but also emits light through the cover 6 of the drive unit 1, since in the lower area of the cover 6 in the vicinity of the light source 24, a translucent area 25 is arranged in order to illuminate the area below the drive unit 1.

Auf die Grundplatte 5 ist der Deckel 6 aufgesetzt, so daß die darunter befindlichen Gegenstände vor Verschmutzung etc. geschützt sind.The cover 6 is placed on the base plate 5, so that the objects underneath are protected from dirt, etc.

Im Gegensatz zur Schnittdarstellung der Fig. 1 zeigt Fig. 2 eine Draufsicht auf die Grundplatte 5 der Antriebseinheit 1, wobei die Motor-Getriebe-Einheit 2 entfernt und in ihrer ursprünglichen Lage lediglich gestrichelt dargestellt ist, um die darunterliegenden Gewindestangen 9 sowie deren Abgriff von der Abtriebswelle 50 besser zu zeigen. In Fig. 2 ist zu erkennen, wie sich die Buchse 12, die im übrigen in den Fig. 3a und 3 b detaillierter dargestellt ist, durch die Öffnung 33 der Grundplatte 5 koaxial zur Abtriebswelle 50 durch die Grundplatte hindurch erstreckt.In contrast to the sectional view of FIG. 1, FIG. 2 shows a top view of the base plate 5 of the drive unit 1, the motor-gear unit 2 being removed and shown in its original position only in dashed lines around the threaded rods 9 underneath and their tapping from to show the output shaft 50 better. In FIG. 2 it can be seen how the bushing 12, which is shown in more detail in FIGS. 3a and 3b, extends through the opening 33 of the base plate 5 coaxially to the output shaft 50 through the base plate.

Wie dargestellt, befindet sich nur wenig Spielraum zwischen den Aussenflächen der Buchse 12 und der Öffnung 33 in der Grundplatte und ebenso zwischen den Innenflächen der Buchse 12 und der Abtriebswelle 50. Dadurch ist sichergestellt, daß die Buchse 12, obwohl sie ausser dem Aufstecken auf die Metallbuchse 18 nirgends gelagert ist, einerseits im Normalbetrieb weder an der Grundplatte 5 im Bereich der Öffnung 33 noch an der Abtriebswelle 50 anliegt und somit sauber mit dem Kegelritzel 14 der Zahnstange 9 kämmt, andererseits führt jedoch ein durch nicht vorhergesehene Kräfte etc. herbeigeführtes Auslenken der Buchse 12 aus seiner Normallage aufgrund des begrenzten Spieles gegenüber der Grundplatte 5 und der Abtriebswelle 50 bestenfalls zu einer zusätzlichen Reibung an diesen Stellen, jedoch nicht zu einem Aussereingriffgeraten des Kegelritzels 14, wodurch ja eine gesamte Neueinstellung der beiden die Endschalter 8 betätigenden Muttern 10 notwendig werden würde. In Fig. 2 sind wiederum die beiden Lagerböcke 15 gezeigt, in denen die Gewindestangen 9 senkrecht zur Richtung der Abtriebswelle 50 und damit der Buchse 12 gelagert ist. Das Kegelritzel 14 am einen Ende der Gewindestange 9 besteht, ebenso wie die Buchse 12, aus einem Kunststoff, vorzugsweise Polyamid, und wird auf das ein Vielzahnprofil aufweisende Ende der metallenen Gewindestange 9 aufgespritzt. Neben der Gewindestange 9 sind auf der einen Seite die beiden Endschalter 8 befestigt, die in die hierfür vorhandenen Justierungsstege 29 eingedrückt und anschließend auf der Grundplatte verschraubt werden. Diese Endschalter 8 befinden sich in einem solchen Abstand von der Gewindestange 9, daß die auf der Gewindestange 9 axial verschieblichen Muttern 10 bei Passieren der Endschalter 8 diese betätigen. Die Muttern 10 sind durch einen Winkel 16 auf der anderen Seite der Gewindestange am Mitdrehen mit der Gewindestange 9 gehindert, indem der Winkel 16 mit seinem einen Schenkel auf der Grundplatte 5 verschraubt wird und dessen anderer Schenkel parallel neben der Gewindestange 9 in einem solchen Abstand aufragt, daß die Muttern 10 mit einer ihrer Aussenflächen an der Aussenfläche dieses Schenkels des Winkels 16 entlanggleiten, ohne sich mit der Gewindestange mitdrehen zu können. Die beiden Schenkel des Winkels 16 sind durch Verstrebungen 27 gegeneinander versteift. In dem auf der Grundplatte 5 aufliegenden Schenkel des Winkels 16 befinden sich mehrere Langlöcher, deren Längsachse quer zur Längserstreckung des Winkels 16 verläuft, und
durch die hindurch mittels der Befestigungsschrauben 39 ein Festlegen des Winkels 16 bezüglich der Grundplatte 5 möglich ist. Dadurch kann der gewünschte Abstand und die gewünschte Parallelität des Winkels 16 zur Gewindestange 9 eingestellt werden und für den Fall eines Nachjustierens der Endschalterpositionen, d.h., der Lage der Muttern 10 auf der Gewindestange 9, können die Befestigungsschrauben 39 etwas gelöst und daraufhin der Winkel 16 so weit von der Gewindestange 9 zurückgezogen werden, daß ein Verdrehen der Muttern 10 möglich ist. Im montierten Zustand befindet sich über dieser Endschalteransteuerung die Motor-Getriebe-Einheit 2, die in der Fig. 2 nur gestrichelt dargestellt ist, und die über die Füße 35 mit der Grundplatte 5 verschraubt ist. Ebenfalls in Fig. 2 nicht dargestellt, ist die aus Fig. 1 ersichtliche, noch über der Motor-Getriebe-Einheit 2 liegende Platine 31 für die Steuerung der Antriebseinheit 1, jedoch ist in Fig. 2 ein Teil der Verstrebungen 40 zu erkennen, die im kompletten Zustand die Platine 31 tragen.
As shown, there is little clearance between the outer surfaces of the bushing 12 and the opening 33 in the base plate and also between the inner surfaces of the bushing 12 and the output shaft 50. that the bushing 12, although it is nowhere supported except when it is plugged onto the metal bushing 18, is not in normal operation either on the base plate 5 in the area of the opening 33 or on the output shaft 50 and thus meshes cleanly with the bevel pinion 14 of the rack 9, on the other hand However, a deflection of the bushing 12 caused by unforeseen forces, etc., from its normal position due to the limited play relative to the base plate 5 and the output shaft 50 leads at best to additional friction at these points, but not to disengagement of the bevel pinion 14, as a result of which one entire readjustment of the two nuts 10 actuating the limit switches 8 would be necessary. 2 shows the two bearing blocks 15, in which the threaded rods 9 are mounted perpendicular to the direction of the output shaft 50 and thus the bushing 12. The bevel pinion 14 at one end of the threaded rod 9, like the bushing 12, consists of a plastic, preferably polyamide, and is sprayed onto the end of the metallic threaded rod 9, which has a multi-tooth profile. In addition to the threaded rod 9, the two limit switches 8 are fastened on one side, which are pressed into the adjustment webs 29 provided for this purpose and then screwed onto the base plate. These limit switches 8 are located at such a distance from the threaded rod 9 that the axially displaceable nuts 10 on the threaded rod 9 actuate them when passing the limit switches 8. The nuts 10 are prevented by an angle 16 on the other side of the threaded rod from rotating with the threaded rod 9, by screwing the angle 16 with its one leg onto the base plate 5 and its other leg projecting parallel to the threaded rod 9 at such a distance that the nuts 10 slide with one of their outer surfaces along the outer surface of this leg of the angle 16 without being able to rotate with the threaded rod. The two legs of the angle 16 are stiffened against one another by struts 27. In the leg of the angle 16 lying on the base plate 5 there are several elongated holes, the longitudinal axis of which extends transversely to the longitudinal extent of the angle 16, and
through which a fixing of the angle 16 with respect to the base plate 5 is possible by means of the fastening screws 39. As a result, the desired distance and the desired parallelism of the angle 16 to the threaded rod 9 can be set and, in the event of readjustment of the limit switch positions, ie the position of the nuts 10 on the threaded rod 9, the fastening screws 39 can be loosened somewhat and then the angle 16 so withdrawn far from the threaded rod 9, that a turning of the nuts 10 is possible. In the assembled state, the motor-gear unit 2, which is only shown in broken lines in FIG. 2, is located above this limit switch control and is screwed to the base plate 5 via the feet 35. Also not shown in FIG. 2, the circuit board 31 for the control of the drive unit 1, which can still be seen in FIG. 1 and is still located above the motor-transmission unit 2, can be seen in FIG. 2, however, a part of the struts 40 carry the board 31 in its complete condition.

Am unteren Ende der Motor-Getriebe-Einheit 2 befindet sich ferner eine Lichtquelle 24, die bei Inbetriebnahme der Antriebseinheit 1 leuchtet. Des weiteren sind auf der Grundplatte 5 zwei 12 Volt Akkumulatoren 21 angeordnet, die in Reihe geschaltet sind und zur Energieversorgung der Motor-Getriebe-Einheit 2 sowie der Lichtquelle 24 und des Elektromagneten 37 dient. Dieser Elektromagnet 37 zieht unter Strom den Seilzug 42 an, welche so mit dem Verriegelungsmechanismus, also etwa dem Schloß, des Tores 3 verbunden ist, daß bei angezogenem Elektromagneten 37 dieser Schlittenmechanismus entriegelt ist.At the lower end of the motor-transmission unit 2 there is also a light source 24 which lights up when the drive unit 1 is started up. Furthermore, two 12 volt accumulators 21 are arranged on the base plate 5, which are connected in series and are used to supply energy to the motor-transmission unit 2 and the light source 24 and the electromagnet 37. This electromagnet 37 energizes the cable 42, which is connected to the locking mechanism, that is to say the lock, of the gate 3 in such a way that this slide mechanism is unlocked when the electromagnet 37 is tightened.

Bei den Fig. 1 und 2 handelt es sich selbstverständlich nur um schematische Zeichnungen, bei denen Einzelheiten, wie die Verkabelung der einzelnen elektrischen Komponenten etc. sowie einige der notwendigen Verschraubungen, wie etwa zwischen Deckel 6 und Grundplatte 5, nur symbolisch oder überhaupt nicht dargestellt sind, um die Übersichtlichkeit zu wahren.1 and 2 are of course only schematic drawings in which details such as the wiring of the individual electrical components etc. and some of the necessary screw connections, such as between cover 6 and base plate 5, are only shown symbolically or not at all are to maintain clarity.

Die Fig. 3a und 3b zeigen die Buchse 12 in einer vergrößerten Detaildarstellung. Da raus ist zu ersehen, daß das Aufschieben der Buchse 12 auf den Aussendurchmesser 11 der Metallbuchse 18 dadurch möglich ist, daß die Buchse 12 von der Seite her, mit der sie auf die Metallbuchse 18 aufgeschoben wird, über den Umfang verteilt, mehrere Schlitze 41 aufweist, so daß sich die dazwischenliegenden Segmente 42 etwas aufbiegen können, um den ringförmig verlaufenden Vorsprung 23 über den Aussendurchmesser 11 der Metallbuchse 18 und in die Ringnut 22 einbringen zu können.3a and 3b show the socket 12 in an enlarged detail. From this it can be seen that the bushing 12 can be pushed onto the outer diameter 11 of the metal bushing 18 by the fact that the bushing 12 distributes a plurality of slots 41 from the side with which it is pushed onto the metal bushing 18 has, so that the intermediate segments 42 can bend slightly in order to be able to introduce the annular projection 23 over the outer diameter 11 of the metal bushing 18 and into the annular groove 22.

Wie Fig. 1 zeigt, ist durch zusätzliche (wie in Fig. 1 nur angedeutete) Kerbnägel 26, die von der Stirnseite der Metallbuchse 18 her bis in die Stirnseite der Buchse 12 hineinragen, ein Relativverdrehen der Buchse 12 gegenüber der Metallbuchse 18 ausgeschlossen. Anstelle dieser Kerbnägel 26 oder auch in Ergänzung hierzu, könnte auf die Buchse 12 nach Aufschieben auf die Metallbuchse 18 ihrerseits wieder ein beispielsweise aus Federstahl bestehender, annähernd geschlossener Spannring aufgeschoben werden, für dessen sicheren Sitz im Aussenumfang der Buchse 12 im Bereich der Schlitze 24 vorzugsweise eine ringförmige Nut 43 anzuordnen wäre, wie in Fig. 3a, nicht jedoch in Fig. 1 dargestellt.As FIG. 1 shows, additional (as only indicated in FIG. 1) notch nails 26, which protrude from the end face of the metal bushing 18 into the end face of the bushing 12, prevent the bushing 12 from rotating relative to the metal bushing 18. Instead of these notched nails 26 or in addition to this, an approximately closed clamping ring, for example made of spring steel, could in turn be pushed onto the socket 12 after being pushed onto the metal socket 18, preferably for its secure fit in the outer circumference of the socket 12 in the area of the slots 24 an annular groove 43 would be arranged, as shown in Fig. 3a, but not shown in Fig. 1.

Wie Fig. 3a weiterhin zeigt, verringert sich der Durchmesser der Buchse 12 von der der Metallbuchse 18 zugewandten Seite aus zum anderen Ende hin, um mit einem möglichst kleinen Durchmesser der Öffnung 33 in der Grundplatte 5 auszukommen.3a also shows, the diameter of the bushing 12 decreases from the side facing the metal bushing 18 to the other end in order to get by with the smallest possible diameter of the opening 33 in the base plate 5.

Fig. 4 zeigt eine Detaildarstellung des mit der Verzahnung 77 der Zahnstange 87 kämmenden Ritzels 70. Es ist zu erkennen, daß die Verzahnung 77 gerade Zahnflanken 80 aufweisen, die winklig zueinander stehen und in einen kreisbogenförmigen Zahngrund 81 übergehen. Die Zahnköpfe der Verzahnung 77 fallen aufgrund dieser Gestaltung sehr schmal aus, da die Zahnstange 87 aus bandförmigem Metall besteht, ist die Steifigkeit der Zähne der Verzahnung 77 jedoch auch im Kopfbereich ausreichend. Die Ritzelzähne 71 des Ritzels 70 bestehen dagegen aus Kunststoff, vorzugsweise Polyamid, und können daher bei gleicher Dimensionierung wesentlich weniger Kräfte als eine Verzahnung aus Metall aufnehmen. Aus diesem Grund sind die Ritzelzähne 71 vom Querschnitt her, insbesondere im Bereich der Zahnköpfe 78, wesentlich stärker dimensioniert, was dadurch erreicht wird, daß die etwa halbkreisförmigen Zahnköpfe 78 in Zahnflanken 79 gemäß einer Evolventen-Verzahnung übergehen. Auf diese Art und Weise ist nicht nur ein leises und reibungsarmes Abrollen zwischen Ritzel 70 und Zahnstange 87 gewährleistet, sondern es kommt auch bei einem Querversatz von Ritzel 70 bzw. Zahnstange 87, also quer zur Zeichenebene der Fig. 4, lediglich zu einem Verschleiß des weichen Ritzels 70, welches mittels der in Fig. 4 zu erkennenden vier Verschraubungen sehr einfach von der Metallbuchse 18 entfernt und ausgewechselt werden kann.4 shows a detailed illustration of the pinion 70 meshing with the toothing 77 of the toothed rack 87. It can be seen that the toothing 77 has straight tooth flanks 80 which are at an angle to one another and merge into a circular tooth base 81. The tooth heads of the toothing 77 are very narrow due to this design, since the toothed rack 87 consists of band-shaped metal, the stiffness of the teeth of the toothing 77 is however sufficient in the head area. The pinion teeth 71 of the pinion 70, on the other hand, are made of plastic, preferably polyamide, and can therefore absorb significantly less forces than a toothing made of metal with the same dimensions. For this reason, the pinion teeth 71 are dimensioned much larger in cross-section, in particular in the area of the tooth heads 78, which is achieved in that the approximately semicircular tooth heads 78 merge into tooth flanks 79 in accordance with an involute toothing. In this way, not only a quiet and low-friction rolling between the pinion 70 and rack 87 is ensured, but there is also a wear of the pinion 70 or rack 87, that is transverse to the plane of FIG. 4, only soft pinion 70, which can be very easily removed from the metal bushing 18 and replaced by means of the four screw connections shown in FIG. 4.

Claims (16)

  1. Driving unit for a gate displaceable by means of rollers along a guide rail, the driving unit being affixed to the gate and having a housing which consists of a baseplate and cover and within which a motor and gear unit is mounted by means of a number of feet at a slight distance from the baseplate, the output shaft of the motor and gear unit extending outwards from the housing via an opening in the baseplate, in order to drive the gate along the guide rail, characterized by the fact that
    (a) the housing (4) contains two limit switches (8) serving to terminate the opening and closing process,
    (b) while the limit switches (8) are actuated by contact with nuts (10) which are screwed onto a threaded rod (9) and which do not rotate together with the latter but which are axially movable,
    (c) while the threaded rod (9) is situated transversally to the output shaft (50) of the motor and gear unit (2) and is set in rotation by this latter,
    (d) a pinion (70) is mounted, fast in rotation, on the end of the output shaft (50), outside the housing (4), in order to engage a system of teeth (77) of the guide rail (7),
    (e) a bushing (12) is coaxially mounted on an outer diameter (11) belonging to the pinion (70) and facing towards the motor and is provided at its other end with a bevel gearing (13) and its long enough for the said bevel gearing (13) to be situated inside the housing (4),
    (f) the outer diameter of the bushing (12) being just short of touching the opening (33) of the baseplate (5),
    (g) the bevel gearing (13) meshes with a bevel pinion (14) at the end of the threaded rod (9) mounted transversally to the direction of the output shaft (50) and parallel to the baseplate (5),
    (h) the nuts (10) running on the threaded rod (9) are prevented, by an angle (16) screwed onto the baseplate (5), parallel to the threaded rod (9), from accompanying the rotation of the said threaded rod (9),
    (i) the motor and gear unit (2) is not of self-locking design,
    (j) an electromagnet (37) is mounted inside the housing (4), on the baseplate (5), and releases the gate when actuated,
    (k) an accumulator for the supply of power to the motor and gear unit (2) is mounted on the baseplate (5), inside the housing (4), and is connected with contacts (20) on the outside of the housing (4), which, when the gate (3) is closed, is connected, via contacts (19) permanently mounted on the building, with the supply mains, for the purpose of charging.
  2. Driving unit in accordance with Claim 1, characterized by the fact that the gate (3) is formed by gates which can negotiate bends and which consist of a number of narrow movably interconnected bars.
  3. Driving unit in accordance with any one of the foregoing claims, characterized by the fact that the gearing of the motor and gear unit (2) has a wormgear.
  4. Driving unit in accordance with Claims 3, characterized by the fact that more than one turn of the wormgear is always engaged with the wormwheel at any one time.
  5. Driving unit in accordance with any one of the foregoing claims, characterized by the fact that the pinion (70) consists of plastic, at least in the zone of the pinion teeth (71), and is wider than the system of teeth (77) of the guide rail (7).
  6. Driving unit in accordance with any one of the foregoing claims, characterized by the fact that the tooth tips (78) of the pinion teeth (71) of the pinion (70) are semicircular and that the system of teeth (77) of the guide rail (7) in each case has straight tooth flanks (80) which continue as an approximately semicircular tooth base (81).
  7. Driving unit in accordance with any one of the foregoing claims, characterized by the fact that both the bevel pinion (14) and the bushing (12) are made of plastic.
  8. Driving unit in accordance with Claim 7, characterized by the fact that the bevel (14), the bushing (12) and the pinion (70) are at least partly made of polyamide.
  9. Driving unit in accordance with any one of the foregoing claims, characterized by the fact that the pinion (70) is connected fast in rotation with the output shaft (50) of the motor and gear unit (2) by means of a metal bushing (18) situated between them.
  10. Driving unit in accordance with Claim 9, characterized by the fact that the bushing (12) is provided, on the end face nearest to the pinion (70) and in the axial direction and at a number of points on the periphery, with incisions extending approximately to that distance to which it is mounted on the outer diameter (11) of the metal bushing (18).
  11. Driving unit in accordance with anyone of the foregoing claims, characterized by the fact that the outer periphery (11) of the meal bushing (18) onto which the bushing (12) is mounted has an annular groove (22) which extends the whole way round and which is engage, after the bushing (12) has been mounted, by a correspondingly shaped projection (23) which likewise takes an annular course the whole way round and which is formed on the inner periphery of the bushing (12).
  12. Driving unit in accordance with anyone of the foregoing claims, characterized by the fact that the bushing (12) is secured against rotation in relation to the metal bushing (18) by means of one or more securing pins such as notched nails (26), which inter-connect the metal bushing (18) and the bushing (12) from the end face, and/or by means of a tension ring surrounding the bushing (12) in the zone of the metal bushing (18).
  13. Driving unit in accordance with anyone of the foregoing claims, characterized by the fact that the nuts (10) are standardized ordinary commercial hexagonal nuts.
  14. Driving unit in accordance with anyone of Claims 1-13, characterized by the fact that the fact that the nuts (10) are ordinary commercial standardized square nuts.
  15. Driving unit in accordance with anyone of the foregoing claims, characterized by the fact that the cover (6), in its side (25) which is the lower side in the assembled state, is of slanting construction and partly transparent, in order to give access to the light of a light source (24) provided inside the housing (4).
  16. Driving unit in accordance with anyone of the foregoing claims, characterized by the fact that the torque of the motor and gear unit is adjustable within certain limits in order to adapt it to gates of different weights.
EP88121120A 1988-12-16 1988-12-16 Drive unit for a door sliding horizontally along a guide rail by means of rollers Expired - Lifetime EP0374271B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT88121120T ATE82034T1 (en) 1988-12-16 1988-12-16 AUTOMATION UNIT FOR HORIZONTAL SLIDING GATE BY ROLLERS ALONG A GUIDE RAIL.
EP88121120A EP0374271B1 (en) 1988-12-16 1988-12-16 Drive unit for a door sliding horizontally along a guide rail by means of rollers
DE8888121120T DE3875738D1 (en) 1988-12-16 1988-12-16 DRIVE UNIT FOR HORIZONTAL ROLLS THROUGH A GUIDE RAIL SLIDING GATE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88121120A EP0374271B1 (en) 1988-12-16 1988-12-16 Drive unit for a door sliding horizontally along a guide rail by means of rollers

Publications (2)

Publication Number Publication Date
EP0374271A1 EP0374271A1 (en) 1990-06-27
EP0374271B1 true EP0374271B1 (en) 1992-11-04

Family

ID=8199676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121120A Expired - Lifetime EP0374271B1 (en) 1988-12-16 1988-12-16 Drive unit for a door sliding horizontally along a guide rail by means of rollers

Country Status (3)

Country Link
EP (1) EP0374271B1 (en)
AT (1) ATE82034T1 (en)
DE (1) DE3875738D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19739820A1 (en) * 1997-09-11 1999-04-01 Kaba Gallenschuetz Gmbh Door system
US11643849B2 (en) 2020-01-13 2023-05-09 Alpine Overhead Doors, Inc. Planetary gearbox system
US11486195B2 (en) 2020-01-13 2022-11-01 Alpine Overhead Doors, Inc. Limit position safety device for a rolling door
WO2021146314A1 (en) * 2020-01-13 2021-07-22 Alpine Overhead Doors, Inc. Limit position safety device for a rolling door

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996697A (en) * 1975-12-24 1976-12-14 Overhead Door Corporation Door operator with screw drive
DE2643905C2 (en) * 1976-09-29 1978-10-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen Room dividing wall element with motor drive
DE3205675A1 (en) * 1982-02-17 1983-09-01 Kurt 7403 Ammerbuch Berner Drive device for a sliding door

Also Published As

Publication number Publication date
EP0374271A1 (en) 1990-06-27
ATE82034T1 (en) 1992-11-15
DE3875738D1 (en) 1992-12-10

Similar Documents

Publication Publication Date Title
EP2879549B1 (en) Electromotive furniture drive
DE3834643C2 (en) Drive unit
DE202012001762U1 (en) Chain drive for an actuator for automatic opening and closing of a ventilation device
DE4436326C1 (en) Motor vehicle immobilisation lock
DE2854713C2 (en)
DE102006059224A1 (en) Rotary wing drive system for rotary wing door, has driven shaft, which is formed by driven shaft of closure part or by driven shaft of driving part or is actively connected with one of driven shafts
EP0374271B1 (en) Drive unit for a door sliding horizontally along a guide rail by means of rollers
AT403145B (en) DRIVER FOR A DISCONNECT SWITCH, ESPECIALLY FOR A CABINET SWITCH
DE3608988A1 (en) Device for the manual actuation of a winding shaft, which can be driven by an electric motor, e.g. of a roller blind
DE102014015388B4 (en) Device for actuating a locking device
DE19839078A1 (en) Electromechanically operated window roller blind, especially for use in cars has parallel to winding shaft, rotatable spindle whose two ends have threads, one end right-hand thread and other, left-hand thread.
DE3737385C2 (en) Device for opening and closing a gate
DE10106674A1 (en) Locking device for rotary or sliding door has locking element drive containing reversible electric drive motor that engages locking element via gears
AT513983B1 (en) Device for moving a cover for isolating basins
DE10301584B4 (en) Device for the displaceable arrangement of a panel
EP0491133A1 (en) Actuating mechanism for window and door locks or similar
DE202005001208U1 (en) Electromotive drive device for shifting movable furniture components, has linear portable control element arranged in housing with two end switches arranged at a distance to each other and functionally cooperative with it
DE10000162C2 (en) Roller shutter box
EP0500984B1 (en) Drive unit with four limit switches
DE1784529A1 (en) Spindle drive device for a sun protection
DE4344325A1 (en) Planetary gear especially for actuators for mountings
EP0373254B1 (en) Drive unit for overhead doors
DE3402107A1 (en) Drive for doors, especially sliding folding doors
DE102004009878A1 (en) Drive component for adjusting movable parts of furniture has drive motor for each drawing drive and no housing
DE8612366U1 (en) Electric actuator for the remote control of adjustable components, in particular window and door leaves, light domes and roof flaps

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): AT CH DE LI

17P Request for examination filed

Effective date: 19900810

17Q First examination report despatched

Effective date: 19911203

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FIRMA KURT BERNER

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE LI

REF Corresponds to:

Ref document number: 82034

Country of ref document: AT

Date of ref document: 19921115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3875738

Country of ref document: DE

Date of ref document: 19921210

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19921216

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19931229

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19940119

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19941231

Ref country code: CH

Effective date: 19941231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950901