EP0373254B1 - Drive unit for overhead doors - Google Patents

Drive unit for overhead doors Download PDF

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Publication number
EP0373254B1
EP0373254B1 EP88121121A EP88121121A EP0373254B1 EP 0373254 B1 EP0373254 B1 EP 0373254B1 EP 88121121 A EP88121121 A EP 88121121A EP 88121121 A EP88121121 A EP 88121121A EP 0373254 B1 EP0373254 B1 EP 0373254B1
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EP
European Patent Office
Prior art keywords
pinion
threaded rod
drive unit
sleeve
motor
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
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EP88121121A
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German (de)
French (fr)
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EP0373254A1 (en
Inventor
Kurt Berner
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Individual
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Individual
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Publication date
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Priority to DE88121121T priority Critical patent/DE3885623D1/en
Priority to AT88121121T priority patent/ATE95586T1/en
Priority to EP88121121A priority patent/EP0373254B1/en
Publication of EP0373254A1 publication Critical patent/EP0373254A1/en
Application granted granted Critical
Publication of EP0373254B1 publication Critical patent/EP0373254B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • E05F15/668—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages

Definitions

  • drives are known in which, for example, a guide plate is installed in the garage in the area of the ceiling, in which a drive chain or a similar medium rotates and thereby moves a carriage along this guide rail .
  • This carriage is connected to the door leaf via a guide rod, so that when the carriage is moved back, the door leaf is moved upward, that is to say into the open position.
  • the drive chain or equivalent element runs over two sprockets or rollers, one of which is close to the gate to be moved and the other at the opposite end.
  • the pinion is usually driven at the opposite end by means of a drive unit arranged there, which contains an electric motor. This solution is shown, for example, in DE-U-8710940.9.
  • limit switches or other elements In order to stop the movement of the chain and thus this door leaf in the correct end positions, limit switches or other elements with the same effect are necessary. It is possible to either accommodate these limit switches in a protected manner within the drive unit, or to arrange these limit switches in the area of the door leaf or the drive chain.
  • the present invention relates to the variant with limit switches arranged within the drive unit.
  • a drive unit shows US-A 3996697 according to the preamble of claim 1, in which the drive unit for a garage door is also housed within the drive housing and the limit switches realizing the end positions of the door are switched by control nuts which are displaceable on a threaded rod and are prevented from rotating.
  • the threaded rod is operatively connected to the motor of the drive unit.
  • the aforementioned drive unit is not for opening a swing gate, but one Stepping gates with horizontally divided segments are provided, which are pulled up along guide rails.
  • the mediating drive element is a long threaded spindle, which is installed under the ceiling of the building and on which a slide is moved as a non-rotating nut.
  • the drive motor is arranged parallel to the longitudinal extension of the threaded rods, and connected to them via circumferential drive elements such as chains and toothed belts, all of which are located within the housing, so that the output pinion of the motor does not have to protrude from the housing. Instead, the threaded rod driving the carriage is inserted into the housing.
  • an electric motor-gear unit is used as the drive source, the output shaft of which must be connected to the pinion of the drive chain to be driven.
  • This motor-gear unit is screwed to the base plate by means of several feet and later protected by a cover, which together with the base plate forms the housing of the drive unit.
  • the output shaft of this motor-gear unit protrudes from the housing through an opening in the base plate, so that the driven pinion for moving the drive chain is located outside the housing.
  • the present invention relates to the variant with limit switches arranged within the drive unit.
  • the limit switches are also located inside the housing for protection against dirt and damage, a tap must be made between the output shaft and the chain sprocket to control the limit switches. 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 tap is taken from the output shaft inside the housing, this previously meant mounting the motor-gear unit not directly on the base plate, but by means of a spacer on the base plate, in order to provide enough space between the motor-gear unit and the base plate for picking up to create the rotary movement towards the limit switches.
  • This tapping was usually carried out on a threaded rod on one end of a gearwheel to remove the rotary movement from the output shaft.
  • this threaded rod there were, for example, specially manufactured plastic parts with an internal thread, which were prevented from rotating with the threaded rod by a securing element, for example a spring clip.
  • a securing element for example a spring clip.
  • the threaded rod rotated there was therefore an axial displacement of the plastic parts, which in this way reached and actuated limit switches mounted parallel to the threaded rod.
  • the securing element i.e. the spring clip
  • the implementation of the tap from the output shaft to the limit switches was very expensive because of this either standardized bought-in parts had to be used, which, however, did not allow an optimal reduction in the dimensions of the entire drive unit, or special gearwheels were produced in coordination with the output shaft, for which in turn a corresponding bearing had to be provided in the housing or the base plate, all of which together were considerable Cost required. It is therefore the object of the invention to avoid the disadvantages of the prior art and to improve this drive unit in particular in a drive unit with a purchased motor-gear unit and an arrangement of the limit switches in the housing in such a way that the entire drive unit is as small and flat as possible and lightweight, and despite robust control and precise and quick setting of the limit switches, only a low cost is required.
  • a socket is pushed onto an outer periphery of this metal pinion formed by a shoulder, which after being pushed engages in a corresponding groove on the outer periphery of the pinion by means of an annular bead arranged on its inner periphery. Sliding on the bushing is made possible by multiple axial slitting of the bushing 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 pins are axially inserted through the metal pinion Inserted socket. Since the material of the bushing has to give way when pushed on and then spring back again, the bushing is preferably made of plastic, namely polyamide.
  • the axial length of the bushing 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 a 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 consists of metal, is sprayed directly onto the end of the threaded rod provided with a multi-tooth profile.
  • This very flat design of the tap for the limit switches means that the motor-gear unit can be placed directly on the base plate without a spacer attached in between.
  • This spacer not only brought about larger dimensions of the entire housing, but also an increase in weight, since this spacer was normally made of metal in order to achieve additional large-area heat emission through this spacer when the engine was heated, for example in the event of a blow. If, on the other hand, this spacer were also made of, for example, polystyrene and possibly made in one piece with the base plate, the plastic material surrounding the screwing points would become dough in the event of excessive heating of the motor and the entire motor-transmission unit could fall off the ceiling if the cover of the Housing is not designed to be sufficiently stable.
  • plate-shaped reinforcing elements made of sheet metal are used on both sides of the base plate. Since the motor-gear unit used here is screwed together with three fastening points, which are arranged concentrically around the output shaft of the motor, the reinforcing elements have the shape of a ring, which surrounds the opening in the base plate for the passage of the output shaft, from the radial Strive three arms, at the ends of which are the holes for fastening the holding points of the motor-gear unit.
  • This star-shaped design of the reinforcing elements offers the advantage, despite the concentric opening for the output shaft, that all fastening points of the motor-gear unit are connected to each other via metal parts for better heat exchange in the event of heating.
  • this one-piece design of the reinforcing part achieves greater stability of the overall arrangement, that is to say after it has been screwed to the motor-gear unit, than when using individual reinforcing elements at each fastening point.
  • the one reinforcement element namely on the side of the motor-transmission unit, i.e. the housing, is cast directly into the base plate during manufacture of the base plate, whereas the corresponding reinforcement element on the opposite side is only cast in with the Screwing is placed on the base plate.
  • the manufacturing effort in the manufacture of the base plates is reduced compared to the pouring of both reinforcement parts without compromising on stability.
  • the hex nuts are prevented from rotating with the threaded rod by means of an angle profile, which is screwed to the base plate with one leg and runs parallel to the threaded rod with its other leg at such a distance that the nuts are on the outside of this leg one of her six Outer surfaces can slide axially to the threaded rod, but rotation of the hexagon nuts is no longer possible.
  • elongated holes are arranged transversely to the longitudinal extent of the angle profile in the leg which is screwed to the base plate. As a result, the distance of the angle profile from the threaded rod can be varied over a certain range.
  • the angle profile can be slightly removed from the threaded rod and then the nuts screwed onto the threaded rod can be screwed into the desired starting position so that the opening and closing movements in the desired door position are ended. Since each of the nuts can be adjusted in six equally distributed positions per full revolution, a sufficiently fine adjustment of the positions in which the limit switches respond is guaranteed.
  • the attachment of the limit switch itself on the base plate next to the threaded rod depends on the type of limit switch used. In addition to screwing the limit switches, they are pressed between appropriately arranged webs on the base plate for initial adjustment.
  • Figure 1 shows a partial cross section through the entire drive unit 20 with the motor-gear unit 3, which is mounted on the base plate 1 and covered by the cover 2 and on the other side of the base plate 1, the pinion 7 for moving the chain 18 in the Rail 19 drives.
  • the minimum distance A between base plate 1 and the building ceiling above it and the clear height B of the housing consisting of base plate 1 and cover 2 are also shown. Furthermore, the distance F between the underside of the motor-gear unit 3 and the base plate 1 is of interest for accommodating the output for controlling the limit switches 8.
  • the motor-gear unit 3 can be seen, which is screwed to the base plate 1 via its feet 4, the base plate 1, which is made of polystyrene, by reinforcing elements 21 on both sides, which also dissipate heat when the motor gear unit is heated. Unit 3 serve, is stiffened. Of the two reinforcing elements 21, one is injected directly into the base plate 1, while the other is only placed on the base plate 1 when the motor-gear unit 3 is being installed.
  • both the base plate 1 and the reinforcing elements 21 have an opening 6 in their center. Through this, the output shaft 5 of the motor-gear unit 3 protrudes through the base plate 1 out of the housing.
  • a pinion 7 is fastened by means of a conical seat and a shaft nut, which at the same time serves as a drive and deflection roller for the chain 18, which rotates in the rail 19 in order to use a connecting rod, not shown, to move the door leaf of the swing gate, which is also not shown to move.
  • the pinion 7 On the side facing the base plate, the pinion 7 has, through a shoulder, an additional outer circumference 11 with a circumferential annular groove 22, onto which a correspondingly designed bushing 12 can be slid, which has a corresponding annular projection 23 on its inner circumference, which protrudes into the Ring groove 22 engages.
  • FIG. 1 shows, additional notch nails 26, which protrude from the face of the pinion 7 into the face of the bush 12, prevent the bush 12 from rotating relative to the pinion 7.
  • an approximately closed clamping ring for example made of spring steel, could be pushed onto the socket 12 after being pushed onto the pinion 7, for its secure fit in the outer circumference of the socket 12 in the area of the slots 24 an annular one Groove 32 is arranged.
  • the diameter of the bushing 12 tapers from the side facing the pinion 7 to the other end in order to get by with the smallest possible diameter of the opening 6 in the base plate 1.
  • the end face of the opening 6 extends very close to the outer surface of the bushing 12, but does not touch it in normal operation. The same applies to the inner diameter 27 of the bushing 12, which approximates the output shaft 5 of the motor-gear unit 3.
  • This bevel gear toothing 13 is arranged on the end of the bushing 12 facing away from the pinion 7, the axial dimension of the bushing 12 being selected such that the bevel gear toothing 13 projects straight into the interior of the housing.
  • a bevel pinion 14 which, like bushing 12, is made of polyamide and is sprayed onto one end of a threaded rod 9, which, as can be seen in FIG. 1, is arranged parallel to the base plate 1 and at right angles to the output shaft 5 .
  • the threaded rod 9 is mounted in two bearing blocks 15 near its ends, which are formed in one piece with the base plate 1.
  • the threaded rod 9 runs directly in the polystyrene of the pillow blocks.
  • the number of teeth of the bevel gear teeth 13 and the bevel pinion 14 must be selected depending on the desired reduction between the output shaft 5 and the axial movement of the nuts 10, in order on the one hand to ensure that the outside diameter of the bevel pinion 14 is sufficient design small and on the other hand, taking into account the six outer surfaces of the nuts 10, corresponding to a 60 ° division, and taking into account the pitch of the thread of the threaded rod 9, a sufficiently precise adjustment possibility for the limit switches 8 of the drive unit.
  • Figure 2 shows a top view of the base plate from the side of the motor-gear unit more clearly the tap from the socket 12 to control the limit switch 8.
  • the bevel pinion 14 at the end of the threaded rod 9 can be seen in Figure 2, which meshes with the bevel gear teeth 13 on the end face of the bush 12.
  • the shape of the reinforcing elements 21, which surround the opening 6 and thus the socket 12, can be clearly seen in the view in FIG. 2:
  • the opening 6 is enclosed by the annular part of the reinforcing elements 21, from which radial extensions extend to the fastening points 28
  • Motor-gear unit 3 which is indicated in FIG. 2 with dashed lines, is sufficient.
  • the screw connections of the motor-gear unit thus run through two reinforcement elements 21, and at the same time the individual fastening points 28 on both sides of the base plate 1 are connected to one another by a metal reinforcement element 21, and thus in a heat-conducting manner.
  • the threaded rod 9 guides the rotary movement tapped from the bush 12 out of the low free space between the motor-gear unit 3 and the base plate 1, as can be seen in FIG. 1, so that the limit switches 8 and the ones that actuate them Nuts 10 are arranged on the threaded rod 9 in the more accessible area next to the motor-gear unit 3.
  • Two conventional, standardized and identical hexagon nuts 10 are arranged on the threaded rod 9. These run with one of their six outer surfaces on one to the threaded rod 9 parallel at the correct distance along the outer surface of an angle 16, and are prevented from rotating with the threaded rod 9 by this almost play-free system. As a result, when the threaded rod 9 is rotated, the two nuts 10 move along the threaded rod 9.
  • each axial position of the nuts 10 with respect to the threaded rod 9 corresponds to a specific position of the door leaf (not shown) to be moved by the drive unit.
  • the nuts 10 In order to bring about a termination of the opening or closing process for a desired open or closed position, the nuts 10 must be axially adjusted with respect to the threaded rod 9 such that when the desired end positions of the door leaf are reached, one of the two nuts 10 just one of the two limit switches 8 next to the threaded rod 9 actuated by pushing away the corresponding contact of the limit switch 8.
  • the limit switches 8 themselves are fastened by screwing in addition to being inserted into lateral limiting webs 29, which are formed in one piece with the base plate 1.
  • the threaded rod 9 is mounted in two bearing blocks 15, which are also formed integrally with the base plate, at a distance from the limit switches 8 such that the nuts 10 actuate the limit switches as they move past the limit switches 8 along the threaded rod 9.
  • an angle 16 is screwed onto the base plate 1, on the outer surface of which is perpendicular to the base plate 1, the two nuts 10 each slide along one of their outer surfaces without being able to rotate.
  • the distance of the angle 16 from the threaded rod 9 can be adjusted or the angle 16 can be retracted from the threaded rod 9 to such an extent that the nuts 10 can be rotated to change the setting for the limit switch.

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  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The invention relates to drive units for the motive movement of upwardly opening swing doors, such as, for example, garage doors. So that these drive units can be as little susceptible to faults as possible and nevertheless be small and lightweight, it is proposed to accommodate the limit switches (8) protectively within the drive housing consisting of the base plate (1) and cover (2). Since the output shaft (5) projects outwards through the base plate (1), where a pinion (7) for driving a chain (18), for example, is fastened to it, it is proposed to push a bush (12), especially consisting of plastic, fixedly in terms of rotation onto an outside diameter of the pinion (7), in such a way that the bush (12) projects back just inside the housing coaxially relative to the output shaft (5), this end of the bush (12) having a bevel gear (13). There meshes with this a bevel pinion (14) at the end of a threaded rod (9) on which are located nuts (10) which are prevented from corotating with the threaded rod (9) by an angle piece (16) bearing in parallel against them and which consequently move axially along the threaded rod (9) in a similar way to the movement of the door. Because the limit switches (8) are arranged parallel to the threaded rod (9), these nuts (10) of variable basic position as a result of the removal of the angle piece (16) are used for actuating the limit switches (8). <IMAGE>

Description

Zum automatischen Öffnen von Schwingtoren wie den nach oben Öffnenden allgemein üblichen Garagentoren sind Antriebe bekannt, bei denen etwa in der Garage in dem Bereich der Decke eine Führungsscheine montiert ist, in der eine Antriebskette oder ein ähnliches Medium umläuft und dadurch einen Schlitten entlang dieser Führungsschiene bewegt. Dieser Schlitten ist über eine Führungsstange mit dem Torblatt verbunden, sodaß beim Zurückbewegen des Schlittens das Torblatt nach oben, also in die geöffnete Stellung, bewegt wird. Die Antriebskette oder das äquivalente Element läuft über zwei Ritzel oder Rollen um, von denen sich die eine in der Nähe des zu bewegenden Tores und die andere am abgewandten Ende befindet. Üblicherweise wird das Ritzel am abgewandten Ende mittels einer dort angeordneten Antriebseinheit, die einen Elektromotor enthält angetrieben. Diese Lösung zeigt beispielsweise die DE-U-8710940.9. Um die Bewegung der Kette und damit dieses Torblattes in den richtigen Endstellungen anzuhalten, sind Endschalter oder andere Elemente mit gleicher Wirkung notwendig. Dabei besteht die Möglichkeit, diese Endschalter entweder innerhalb der Antriebseinheit geschützt unterzubringen, oder diese Endschalter im Bereich des Torblattes oder der Antriebskette anzuordnen.For the automatic opening of up-and-over doors such as the generally opening garage doors, drives are known in which, for example, a guide plate is installed in the garage in the area of the ceiling, in which a drive chain or a similar medium rotates and thereby moves a carriage along this guide rail . This carriage is connected to the door leaf via a guide rod, so that when the carriage is moved back, the door leaf is moved upward, that is to say into the open position. The drive chain or equivalent element runs over two sprockets or rollers, one of which is close to the gate to be moved and the other at the opposite end. The pinion is usually driven at the opposite end by means of a drive unit arranged there, which contains an electric motor. This solution is shown, for example, in DE-U-8710940.9. In order to stop the movement of the chain and thus this door leaf in the correct end positions, limit switches or other elements with the same effect are necessary. It is possible to either accommodate these limit switches in a protected manner within the drive unit, or to arrange these limit switches in the area of the door leaf or the drive chain.

Die vorliegende Erfindung betrifft die Variante mit innerhalb der Antriebseinheit angeordneten Endschaltern. Eine solche Antriebseinheit zeigt US-A 3996697 gemäß dem Oberbegriff des Anspruchs 1, bei der die Antriebseinheit für ein Garagentor ebenfalls innerhalb des Antriebsgehäuses untergebracht ist und die die Endstellungen des Tores realisierenden Endschalter durch auf einer Gewindestange verschiebliche, an der Drehung gehinderte Steuermuttern geschaltet werden. Die Gewindestange ist dabei mit dem Motor der Antriebeinheit wirkverbunden.The present invention relates to the variant with limit switches arranged within the drive unit. Such a drive unit shows US-A 3996697 according to the preamble of claim 1, in which the drive unit for a garage door is also housed within the drive housing and the limit switches realizing the end positions of the door are switched by control nuts which are displaceable on a threaded rod and are prevented from rotating. The threaded rod is operatively connected to the motor of the drive unit.

Allerdings ist die vorgenannte Antriebseinheit nicht zum Öffnen eines Schwingtores, sondern eines Stegmenttores mit horizontal unterteilten Segmenten vorgesehen, die entlang von Führungsschienen hochgezogen werden. Weiterhin ist das vermittelnde Antriebselement eine unter der Gebäudedecke verlegte, lange Gewindespindel, auf der als nichtmitdrehende Mutter ein Schlitten verschoben wird. Der Antriebsmotor ist dabei parallel zur Längserstreckung der Gewindestangen angeordnet, und mit diesen über umlaufende Antriebselemente wie Ketten und Zahnriemen verbunden, die sich sämtliche innerhalb des Gehäuses befinden, sodaß auch das Abtriebsritzel des Motors nicht aus dem Gehäuse herausragen muß. Stattdessen ist die den Schlitten antreibende Gewindestange bis in das Gehäuse hineingeführt.However, the aforementioned drive unit is not for opening a swing gate, but one Stepping gates with horizontally divided segments are provided, which are pulled up along guide rails. Furthermore, the mediating drive element is a long threaded spindle, which is installed under the ceiling of the building and on which a slide is moved as a non-rotating nut. The drive motor is arranged parallel to the longitudinal extension of the threaded rods, and connected to them via circumferential drive elements such as chains and toothed belts, all of which are located within the housing, so that the output pinion of the motor does not have to protrude from the housing. Instead, the threaded rod driving the carriage is inserted into the housing.

Sowohl teilweise beim Stand der Technik als auch bei der vorliegenden Erfindung wird als Antriebsquelle eine elektrische Motor-Getriebe-Einheit verwendet, deren Abtriebswelle mit dem anzutreibenden Ritzel der Antriebskette verbunden werden muß. Diese Motor-Getriebe-Einheit wird mittels mehrerer Füße im Abstand zur Grundplatte verschraubt und später durch einen Deckel, der zusammen mit der Grundplatte das Gehäuse der Antriebseinheit bildet, geschützt. Die Abtriebswelle dieser Motor-Getriebe-Einheit ragt dabei durch eine Öffnung in der Grundplatte aus dem Gehäuse heraus, sodaß sich das angetriebene Ritzel zur Bewegung der Antriebskette außerhalb des Gehäuses befindet.
Die vorliegende Erfindung betrifft die Variante mit innerhalb der Antriebseinheit angeordneten Endschaltern.Both partially in the prior art and in the present invention, an electric motor-gear unit is used as the drive source, the output shaft of which must be connected to the pinion of the drive chain to be driven. This motor-gear unit is screwed to the base plate by means of several feet and later protected by a cover, which together with the base plate forms the housing of the drive unit. The output shaft of this motor-gear unit protrudes from the housing through an opening in the base plate, so that the driven pinion for moving the drive chain is located outside the housing.
The present invention relates to the variant with limit switches arranged within the drive unit.

Da sich die Endschalter zwecks Schutz vor Verschmutzung und Beschädigung ebenfalls innerhalb des Gehäuses befinden, muß zwischen der Abtriebswelle und dem Ritzel für die Kette noch ein Abgriff zur Ansteuerung der Endschalter erfolgen. Dieser Abgriff kann außerhalb des Gehäuses, etwa in der Nähe des Ritzels, erfolgen, was zur Folge hat, daß eine Rückführung dieses Abgriffs ins Gehäuse zu den Endschaltern hin notwendig ist. Erfolgt der Abgriff dagegen an der Abtriebswelle innerhalb des Gehäuses, so bedeutete dies bisher eine Montage der Motor-Getriebe-Einheit nicht direkt auf der Grundplatte, sondern mittels Distanzteiles an der Grundplatte, um noch genügend Platz zwischen Motor-Getriebe-Einheit und Grundplatte zum Abgriff der Drehbewegung zu den Endschaltern hin zu schaffen.Since the limit switches are also located inside the housing for protection against dirt and damage, a tap must be made between the output shaft and the chain sprocket to control the limit switches. 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 tap is taken from the output shaft inside the housing, this previously meant mounting the motor-gear unit not directly on the base plate, but by means of a spacer on the base plate, in order to provide enough space between the motor-gear unit and the base plate for picking up to create the rotary movement towards the limit switches.

Dieser Abgriff erfolgte meist auf eine Gewindestange auf der einen Stirnseite ein Zahnrad zur Abnahme der Drehbewegung von der Abtriebswelle montiert war. Auf dieser Gewindestange befanden sich beispielsweise speziell gefertigte Kunststoffteile mit Innengewinde, die durch ein Sicherungselement, beispielsweise einen Federbügel, am Mitdrehen mit der Gewindestange gehindert waren. Bei Drehung der Gewindestange erfolgte deshalb eine Axialverschiebung der Kunststoffteile, die auf diese Weise parallel neben der Gewindestange montierte Endschalter erreichten und betätigten. Zum Einstellen der Schaltpositionen wurde das Sicherungselement, also etwa der Federbügel, entfernt und das Kunstsoffteil auf der Gewindestange um die gewünschte Länge weitergeschraubt und anschließend wieder durch den Federbügel gesichert.This tapping was usually carried out on a threaded rod on one end of a gearwheel to remove the rotary movement from the output shaft. On this threaded rod there were, for example, specially manufactured plastic parts with an internal thread, which were prevented from rotating with the threaded rod by a securing element, for example a spring clip. When the threaded rod rotated, there was therefore an axial displacement of the plastic parts, which in this way reached and actuated limit switches mounted parallel to the threaded rod. To set the switching positions, the securing element, i.e. the spring clip, was removed and the plastic part was screwed on the threaded rod by the desired length and then secured again by the spring clip.

Dabei erforderten sowohl die speziell gefertigten, auf der Gewindestange laufenden Kunststoffteile hohe Formkosten, die bei Umgestaltung der Antriebseinheit ebenso neu zu investieren waren, wie die Vorrichtungs- bzw. Werkzeugkosten zum Herstellen der speziell angepaßten Federbügel als Sicherungselemente.Both the specially manufactured plastic parts running on the threaded rod required high molding costs, which had to be reinvested when redesigning the drive unit, as did the device and tool costs for producing the specially adapted spring clips as securing elements.

Ebenso war die Realisierung des Abgriffes von der Abtriebswelle zu den Endschaltern hin sehr kostenintensiv, da hierfür entweder genormte Zukaufteile verwendet werden mußten, die jedoch keine optimale Verkleinerung der Abmessungen der ganzen Antriebseinheit zuliessen, oder es wurden spezielle Zahnräder in Abstimmung auf die Abtriebswelle hergestellt, für die wiederum eine entsprechende Lagerung im Gehäuse oder der Grundplatte vorgesehen werden mußte, was zusammen insgesamt erhebliche Kosten erforderte. Es ist daher die Aufgabe gemäß der Erfindung, die Nachteile des Standes der Technik zu vermeiden und insbesondere bei einer Antriebseinheit mit zugekaufter Motor-Getriebe-Einheit und einer Anordnung der Endschalter im Gehäuse diese Antriebseinheit so zu verbessern, daß die gesamte Antriebseinheit möglichst klein, flach und leicht gebaut und trotz robuster Ansteuerung und genauer und schneller Einstellung der Endschalter nur ein geringer Kostenaufwand notwendig ist.Likewise, the implementation of the tap from the output shaft to the limit switches was very expensive because of this either standardized bought-in parts had to be used, which, however, did not allow an optimal reduction in the dimensions of the entire drive unit, or special gearwheels were produced in coordination with the output shaft, for which in turn a corresponding bearing had to be provided in the housing or the base plate, all of which together were considerable Cost required. It is therefore the object of the invention to avoid the disadvantages of the prior art and to improve this drive unit in particular in a drive unit with a purchased motor-gear unit and an arrangement of the limit switches in the housing in such a way that the entire drive unit is as small and flat as possible and lightweight, and despite robust control and precise and quick setting of the limit switches, only a low cost is required.

Die Lösung dieser Aufgabe wird durch die folgende spezielle Ausbildung des Abtriebes für die Endschalter im Zusammenhang mit einer speziellen Befestigung der Motor-Getriebe-Einheit erreicht. Zunächsteinmal ist auf der Abtriebswelle der Motor-Getriebe-Einheit ein handelsübliches Ritzel aus Metall zur Übertragung der Hauptantriebskraft auf die Kette angeordnet, welches beispielsweise mittels Kegelsitz und Spannschraube befestigt wird. Außer der Lagerung in der Motor-Getriebe-Eiheit erfolgt keine weitere Lagerung der Abtriebswelle oder des Ritzels. Die Abtriebswelle erstreckt sich dabei ja durch die Grundplatte hindurch zur Außenseite des Gehäuses.This problem is solved by the following special design of the output for the limit switches in connection with a special fastening of the motor-gear unit. First of all, a commercially available metal sprocket for transmitting the main driving force to the chain is arranged on the output shaft of the motor-gear unit, which is fastened, for example, by means of a conical seat and a tensioning screw. Apart from the bearing in the motor-gear unit, there is no further bearing for the output shaft or the pinion. The output shaft extends through the base plate to the outside of the housing.

Zum Abgriff für die Endschalterbetätigung ist auf einen, durch einen Absatz gebildeten, Außenumfang dieses metallenen Ritzels eine Buchse aufgeschoben, die nach dem Aufschieben mittels eines an ihrem inneren Umfang angeordneten Ringwulstes in eine entsprechende Nut am Außenumfang des Ritzels 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 das Metallritzel in die Buchse eingebracht. Da das Material der Buchse beim Aufschieben nachgeben und anschließend wieder zurückfedern muß, ist die Buchse vorzugsweise aus Kunststoff, nämlich Polyamid, gefertigt.To tap for the limit switch actuation, a socket is pushed onto an outer periphery of this metal pinion formed by a shoulder, which after being pushed engages in a corresponding groove on the outer periphery of the pinion by means of an annular bead arranged on its inner periphery. Sliding on the bushing is made possible by multiple axial slitting of the bushing 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 pins are axially inserted through the metal pinion Inserted socket. Since the material of the bushing has to give way when pushed on and then spring back again, the bushing is preferably made of plastic, namely polyamide.

Da der Außenumfang am Ritzel, auf den die Buchse aufgeschoben wird, zum Gehäuse der Motor-Getriebe-Einheit hinweist, wird die axiale Länge der Buchse so gewählt, daß sie sich durch die Grundplatte hindurch gerade bis ins Innere des Gehäuses erstreckt. An diesem Ende ist in die Buchse eine Kegelradverzahnung eingearbeitet, welche mit einem Kegelritzel kämmt, welches sich am Ende einer 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, daß die Gewindestange aus Metall besteht, auf das mit einem Vielzahnprofil versehene Ende der Gewindestange direkt aufgespritzt.Since the outer circumference on the pinion onto which the bushing is pushed points toward the housing of the motor-gear unit, the axial length of the bushing 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 a 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 consists 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 Kegelverzahnung zum Abgriff für die Endschalter und das Ritzel für den Kettenantrieb nicht einteilig ausgebildet sind, daß als Ritzel ein herkömmliches, genormtes Zukaufteil verwendet weden kann. Da für den Abtrieb zur Ansteuerung der Endschalter 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 Gießen des Plastikmaterials keine weiteren Nachbearbeitungen mehr erforderlich sind. Darüberhinaus 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 des Motors durch die Grundplatte hindurch in das Gehäuse hinein erstreckt. Die Verzahnung der Buchse ragt dabei gerade über die Grundplatte hinaus, sodaß die abgreifende Gewindestange mit aufgesetztem Kegelritzel so niedrig wie möglich über der Grundplatte gelagert werden kann. Die Lagerung der metallenen Gewindestange geschieht dabei direkt in den Lagerböcken, die einteilig und aus dem gleichen Plastikmaterial, meist Polystyrol, wie die Grundplatte gefertigt ist.This offers a number of advantages:
With regard to the socket, the fact that the bevel gear for tapping for the limit switches and the pinion for the chain drive are not formed in one piece, that a conventional, standardized purchased part can be used as the pinion. Since very low 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 the casting of 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 through the base plate into the housing. The teeth of the bushing protrude just beyond the base plate so that the threaded rod with the bevel pinion is as low as possible possible can be stored over the base plate. The metal threaded rod is stored directly in the pedestals, which are made in one piece and from the same plastic material, usually polystyrene, as the base plate.

Durch diese sehr flache Ausbildung des Abgriffs für die Endschalter kann die Motor-Getriebe-Einheit direkt auf die Grundplatte aufgesetzt werden, ohne dazwischen befestigtes Distanzteil. Dieses Distanzteil bewirkte nicht nur größere Abmessungen des gesamten Gehäuses, sondern auch einen Gewichtszuwachs, da diese Distanzteil normalerweise aus Metall gefertigt war, um bei einer Erhitzung des Motors, beispielsweise im Falle des Durchbrennens, eine zusätzliche großflächige Wärmeabgabe durch dieses Distanzteil zu erreichen. Wäre dieses Distanzteil dagegen ebenfalls aus beispielsweise Polystyrol und eventuell einstückig mit der Grundplatte ausgebildet, so würde im Falle der starken Erhitzung des Motors das die Verschraubungspunkte umbebende Plastikmaterial teigig werden und die gesamte Motor-Getriebe-Einheit könnte von der Raumdecke herabfallen, sofern der Deckel des Gehäuses nicht ausreichend stabil gestaltet ist.This very flat design of the tap for the limit switches means that the motor-gear unit can be placed directly on the base plate without a spacer attached in between. This spacer not only brought about larger dimensions of the entire housing, but also an increase in weight, since this spacer was normally made of metal in order to achieve additional large-area heat emission through this spacer when the engine was heated, for example in the event of a blow. If, on the other hand, this spacer were also made of, for example, polystyrene and possibly made in one piece with the base plate, the plastic material surrounding the screwing points would become dough in the event of excessive heating of the motor and the entire motor-transmission unit could fall off the ceiling if the cover of the Housing is not designed to be sufficiently stable.

Um die Gefahr durch das punktuelle Anschmelzen der Befestigungspunkte der Motor-Getriebe-Einheit an der Grundplatte zu vermeiden, und dennoch einen Gewichtsvorteil gegenüber der Ausführung beim Stand der Technik zu haben, werden beidseitig der Grundplatte plattenförmige Verstärkungselemente aus Metallblechen verwendet. Da die vorliegend verwendete Motor-Getriebe-Einheit mit drei Befestigungspunkten, die konzentrisch um die Abtriebswelle des Motors herum angeordnet sind, verschraubt wird, haben die Verstärkungselemente die Form eines Ringes, der die Öffnung in der Grundplatte zum Hindurchtreten der Abtriebswelle umschließt, von der radial drei Arme abstreben, an deren Enden sich die Bohrungen zum Befestigen der Haltepunkte der Motor-Getriebe-Einheit befinden. Diese sternförmige Gestaltung der Verstärkungselemente bietet trotz der konzentrischen Öffnung für die Abtriebswelle den Vorteil, daß sämtliche Befestigungspunkte der Motor-Getriebe-Einheit über Metallteile zum besseren Wärmeaustausch im Fall der Erhitzung miteinander verbunden sind. Gelichzeitig wird durch diese einstückige Ausbildung des Verstärkungsteiles eine höhere Stabilität der Gesamtanordnung, also nach Verschrauben mit der Motor-Getriebe-Einheit, erreicht, als bei Verwendung einzelner Verstärkungselemente an jedem Befestigungspunkt.In order to avoid the risk of the mounting points of the motor-gear unit melting on the base plate, and still have a weight advantage over the design in the prior art, plate-shaped reinforcing elements made of sheet metal are used on both sides of the base plate. Since the motor-gear unit used here is screwed together with three fastening points, which are arranged concentrically around the output shaft of the motor, the reinforcing elements have the shape of a ring, which surrounds the opening in the base plate for the passage of the output shaft, from the radial Strive three arms, at the ends of which are the holes for fastening the holding points of the motor-gear unit. This star-shaped design of the reinforcing elements offers the advantage, despite the concentric opening for the output shaft, that all fastening points of the motor-gear unit are connected to each other via metal parts for better heat exchange in the event of heating. At the same time, this one-piece design of the reinforcing part achieves greater stability of the overall arrangement, that is to say after it has been screwed to the motor-gear unit, than when using individual reinforcing elements at each fastening point.

Von den auf beiden Seiten der Grundplatte verwendeten Verstärkungselementen wird das eine Verstärkungselement, nämlich auf der Seite der Motor-Getriebe-Einheit, also des Gehäuses, bei der Herstellung der Grundplatte direkt in die Grundplatte miteingegossen, wogegen auf der gegenüberliegenden Seite das entsprechende Verstärkungselement lediglich beim Verschrauben auf die Grundplatte aufgelegt wird. Hierdurch wird der Fertigungsaufwand bei der Herstellung der Grundplatten gegenüber dem Eingießen beider Verstärkungsteile ohne Abstriche bei der Stabilität gesenkt.Of the reinforcement elements used on both sides of the base plate, the one reinforcement element, namely on the side of the motor-transmission unit, i.e. the housing, is cast directly into the base plate during manufacture of the base plate, whereas the corresponding reinforcement element on the opposite side is only cast in with the Screwing is placed on the base plate. As a result, the manufacturing effort in the manufacture of the base plates is reduced compared to the pouring of both reinforcement parts without compromising on stability.

Die neben der Gewindestange angeordneten mechanischen Endschalter für die geöffnete und geschloßene Stellung des Tores werden dadurch betätigt, daß auf die Gewindestange an Stelle der bisher verwendeten Kunststoffelemente handelsübliche Sechskant-Muttern aufgeschraubt werden, welche bei Drehung der Gewindestange am Mitdrehen gehindert werden und somit bei Drehung der Gewindestange eine Längsbewegung entlang der Gewindestange vollziehen. Hierdurch erreichen sie bei entsprechender Voreinstellung im gewünschten Bewegungszustand des Tores die Endschalter und beenden dessen Bewegung. Die Verwendung handelsüblicher Sechskant-Muttern ist selbstverständlich gegenüber der Herstellung speziell geformter Kunststoffelemente wesentlich kostengünstiger.The mechanical limit switches for the open and closed position of the gate, which are arranged next to the threaded rod, are actuated by screwing standard hexagon nuts onto the threaded rod instead of the plastic elements previously used, which are prevented from rotating when the threaded rod rotates and thus when the threaded rod rotates Carry out a longitudinal movement along the threaded rod. With the appropriate presetting in the desired state of movement of the gate, they thereby reach the limit switches and stop their movement. The use of commercially available hexagon nuts is of course much cheaper than the production of specially shaped plastic elements.

Die Verhinderung des Mitdrehens der Sechskant-Muttern mit der Gewindestange geschieht durch ein Winkelprofil, welches mit seinem einen Schenkel auf der Grundplatte verschraubt wird und mit seinem anderen Schenkel parallel zur Gewindestange in einem solchen Abstand verläuft, daß an der Außenseite dieses Schenkels die Muttern zwar mit einer ihrer sechs Außenflächen axial zur Gewindestange entlanggleiten können, jedoch eine Drehung der Sechskant- Muttern nicht mehr möglich ist. Um den richtigen Abstand des Winkelprofil von der Gewindestange einstellen zu können, sind in dem Schenkel, der mit der Grundplatte verschraubt wird, Langlöcher quer zur Längserstreckung des Winkelprofils angeordnet. Hierdurch kann der Abstand des Winkelprofils von der Gewindestange über einen gewißen Bereich variiert werden. Ebenso kann nach Lösen der Verschraubung des Winkelprofils auf der Grundplatte das Winkelprofil von der Gewindestange etwas entfernt und nachfolgend die auf der Gewindestange aufgeschraubten Muttern in die gewünschte Ausgangslage verschraubt werden, damit ein Beenden der Öffnungs- und Schließbewegungen in der gewünschten Torstellung erfolgt. Da jede der Muttern pro voller Umdrehung in sechs gleichmaßig verteilten Stellungen einstellbar ist, ist eine ausreichend feine Einstellung der Positionen, in denen die Endschalter ansprechen, gewährleistet.The hex nuts are prevented from rotating with the threaded rod by means of an angle profile, which is screwed to the base plate with one leg and runs parallel to the threaded rod with its other leg at such a distance that the nuts are on the outside of this leg one of her six Outer surfaces can slide axially to the threaded rod, but rotation of the hexagon nuts is no longer possible. In order to be able to set the correct distance of the angle profile from the threaded rod, elongated holes are arranged transversely to the longitudinal extent of the angle profile in the leg which is screwed to the base plate. As a result, the distance of the angle profile from the threaded rod can be varied over a certain range. Likewise, after loosening the screw connection of the angle profile on the base plate, the angle profile can be slightly removed from the threaded rod and then the nuts screwed onto the threaded rod can be screwed into the desired starting position so that the opening and closing movements in the desired door position are ended. Since each of the nuts can be adjusted in six equally distributed positions per full revolution, a sufficiently fine adjustment of the positions in which the limit switches respond is guaranteed.

Die Befestigung der Endschalter selbst auf der Grundplatte neben der Gewindestange hängt von der Art der verwendeten Endschalter ab. Zusätzlich zur Verschraubung der Endschalter werden diese zwischen entsprechend angeordnete Stege der Grundplatte zur Erstjustierung eingedrückt.The attachment of the limit switch itself on the base plate next to the threaded rod depends on the type of limit switch used. In addition to screwing the limit switches, they are pressed between appropriately arranged webs on the base plate for initial adjustment.

Eine Ausführungsform gemäß der Erfindung wird im Folgenden an Hand der Figuren beispielhaft näher erläutert. Es zeigen:

Figur 1
eine teilweise Querschnittsdarstellung durch die Antriebseinheit gemäß der Erfindung,
Figur 2
eine Aufsicht auf die Grundplatte von der Seite der Motor-Getriebe-Einheit her und
Figur 3a, b
Einzeldarstellung eines Bauteiles.
An embodiment according to the invention is explained in more detail below with reference to the figures. Show it:
Figure 1
2 shows a partial cross-sectional view through the drive unit according to the invention,
Figure 2
a view of the base plate from the side of the motor-gear unit and
Figure 3a, b
Individual representation of a component.

Figur 1 zeigt einen teilweisen Querschnitt durch die gesamte Antriebseinheit 20 mit der Motor-Getriebe-Einheit 3, die auf der Grundplatte 1 montiert und vom Deckel 2 abgedeckt ist und auf der anderen Seite der Grundplatte 1 das Ritzel 7 zum Bewegen der Kette 18 in der Schiene 19 antreibt.Figure 1 shows a partial cross section through the entire drive unit 20 with the motor-gear unit 3, which is mounted on the base plate 1 and covered by the cover 2 and on the other side of the base plate 1, the pinion 7 for moving the chain 18 in the Rail 19 drives.

Hierbei sind außer der Gesamthöhe C der Antriebseinheit 20 auch der Mindestabstand A zwischen Grundplatte 1 und der darüber liegenden Gebäudedecke sowie die lichte Höhe B des aus Grundplatte 1 und Deckel 2 bestehenden Gehäuses eingezeichnet. Ferner ist für die Unterbringung des Abtriebs zur Ansteuerung der Endschalter 8 noch der Abstand F zwischen der Unterseite der Motor-Getriebe-Einheit 3 und der Grundplatte 1 von Interesse.In addition to the total height C of the drive unit 20, the minimum distance A between base plate 1 and the building ceiling above it and the clear height B of the housing consisting of base plate 1 and cover 2 are also shown. Furthermore, the distance F between the underside of the motor-gear unit 3 and the base plate 1 is of interest for accommodating the output for controlling the limit switches 8.

In der Figur 1 ist die Motor-Getriebe-Einheit 3 zu erkennen, die über ihre Füße 4 mit der Grundplatte 1 verschraubt wird, wobei die aus Polystyrol bestehende Grundplatte 1 durch beidseitige Verstärkungselemente 21, die auch der Wärmeableitung bei Erhitzen der Motor-Getriebe-Einheit 3 dienen, versteift wird. Von den beiden Verstärkungselementen 21 ist die eine direkt in die Grundplatte 1 eingespritzt, während die andere erst beim Montieren der Motor-Getriebe-Einheit 3 auf die Grundplatte 1 aufgelegt wird.In FIG. 1, the motor-gear unit 3 can be seen, which is screwed to the base plate 1 via its feet 4, the base plate 1, which is made of polystyrene, by reinforcing elements 21 on both sides, which also dissipate heat when the motor gear unit is heated. Unit 3 serve, is stiffened. Of the two reinforcing elements 21, one is injected directly into the base plate 1, while the other is only placed on the base plate 1 when the motor-gear unit 3 is being installed.

Um ein Hindurchtreten der Abtriebswelle 5 der Motor-Getriebe-Einheit 3, die ja länger ist als die Füße 4, zu ermöglichen, weisen sowohl die Grundplatte 1 als auch die Verstärkungselemente 21 in ihrem Zentrum eine Öffnung 6 auf. Durch diese ragt die Abtriebswelle 5 der Motor-Getriebe-Einheit 3 durch die Grundplatte 1 aus dem Gehäuse nach außen. Auf dem Ende der Abtriebswelle 5 ist ein Ritzel 7 mittels Kegelsitz und Wellenmutter befestigt, welches gleichzeitig als Antrieb und Umlenkrolle für die Kette 18 dient, welche in der Schiene 19 umläuft, um über eine nicht dargestellte Verbindungsstange das zu bewegende Torblatt des ebenfalls nicht dargestellten Schwingtores zu bewegen.In order to allow the output shaft 5 of the motor-gear unit 3, which is longer than the feet 4, to pass through, both the base plate 1 and the reinforcing elements 21 have an opening 6 in their center. Through this, the output shaft 5 of the motor-gear unit 3 protrudes through the base plate 1 out of the housing. At the end of the output shaft 5, a pinion 7 is fastened by means of a conical seat and a shaft nut, which at the same time serves as a drive and deflection roller for the chain 18, which rotates in the rail 19 in order to use a connecting rod, not shown, to move the door leaf of the swing gate, which is also not shown to move.

Auf der der Grundplatte zugewandten Seite weist das Ritzel 7 durch einen Absatz einen zusätzlichen Außenumfang 11 mit einer umlaufenden Ringnut 22 auf, auf welchen eine entsprechend gestaltete Buchse 12 aufgeschoben werden kann, die an ihrem Innenumfang einen entsprechenden, ringförmigen Vorsprung 23 aufweist, welcher in die Ringnut 22 eingreift.On the side facing the base plate, the pinion 7 has, through a shoulder, an additional outer circumference 11 with a circumferential annular groove 22, onto which a correspondingly designed bushing 12 can be slid, which has a corresponding annular projection 23 on its inner circumference, which protrudes into the Ring groove 22 engages.

Die Figuren 3A und 3B zeigen die Buchse 12 in einer vergrößerten Detaildarstellung. Daraus ist zu ersehen, daß das Aufschieben der Buchse 12 auf den Außendurchmesser 11 des Ritzels 7 dadurch möglich ist, daß die Buchse 12 von der Seite her, mit der sie auf das Ritzel 7 aufgeschoben wird über den Umfang verteilt mehrere Schlitze 24 aufweist, sodaß sich die dazwischenliegenden Segmente 25 etwas aufbiegen können, um den ringförmig umlaufenden Vorsprung 23 über den Außendurchmesser 11 des Ritzels 7 und in die Ringnut 22 einbringen zu können.Figures 3A and 3B show the socket 12 in an enlarged detail. From this it can be seen that the sliding of the bushing 12 onto the outer diameter 11 of the pinion 7 is possible in that the bushing 12 has several slots 24 distributed over the circumference from the side with which it is pushed onto the pinion 7, so that the intermediate segments 25 can bend slightly in order to be able to introduce the annular circumferential projection 23 over the outer diameter 11 of the pinion 7 and into the annular groove 22.

Wie Figur 1 zeigt, ist durch zusätzliche Kerbnägel 26, die von der Stirnseite des Ritzels 7 her bis in die Stirnseite der Buchse 12 hineinragen, ein Relativverdrehen der Buchse 12 gegenüber dem Ritzel 7 ausgeschlossen. Anstelle dieser Kerbnägel 26 oder auch in Ergänzung hierzu könnte auf die Buchse 12 nach Aufschieben auf das Ritzel 7 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 eine ringförmige Nut 32 angeordnet ist.As FIG. 1 shows, additional notch nails 26, which protrude from the face of the pinion 7 into the face of the bush 12, prevent the bush 12 from rotating relative to the pinion 7. Instead of these notched nails 26 or in addition to this, an approximately closed clamping ring, for example made of spring steel, could be pushed onto the socket 12 after being pushed onto the pinion 7, for its secure fit in the outer circumference of the socket 12 in the area of the slots 24 an annular one Groove 32 is arranged.

Wie die Figur 1 und auch die Figur 3A zeigen, verjüngt sich der Durchmesser der Buchse 12 von der dem Ritzel 7 zugewandten Seite aus zum anderen Ende hin, um mit einem möglichst kleinen Durchmesser der Öffnung 6 in der Grundplatte 1 auszukommen. Wie Figur 1 zeigt, reicht die Stirnseite der Öffnung 6 sehr nahe an die Außenfläche der Buchse 12 heran, berührt diese jedoch im Normalbetrieb nicht. Gleiches gilt für den Innendurchmesser 27 der Buchse 12, welcher annähernd an die Abtriebswelle 5 der Motor-Getriebe-Einheit 3 heranreicht. Sollte es aufgrund einseitiger oder zu hoher Belastungen der gesamten Antriebseinheit zu einem Winkelversatz der Buchse 12 gegenüber der Abtriebswelle 5 oder der Mitte der Öffnung 6 der Grundplatte 1 kommen, so wird die Buchse 12 mit dem entsprechenden Außen- oder Innendurchmesser automatisch in der Öffnung 6 der Grundplatte 1 oder an der Abtriebswelle 5 gelagert, was zwar das Auftreten mechanischer Reibung zur Folge hat, jedoch andererseits verhindert, daß ein so großer Winkelversatz der Buchse 12 auftritt, daß Kegelritzel 14 und Kegelradverzahnung 13 der Buchse 12 außer Eingriff geraten.As FIG. 1 and also FIG. 3A show, the diameter of the bushing 12 tapers from the side facing the pinion 7 to the other end in order to get by with the smallest possible diameter of the opening 6 in the base plate 1. As FIG. 1 shows, the end face of the opening 6 extends very close to the outer surface of the bushing 12, but does not touch it in normal operation. The same applies to the inner diameter 27 of the bushing 12, which approximates the output shaft 5 of the motor-gear unit 3. Should there be an angular misalignment of the bushing 12 with respect to the output shaft 5 or the center of the opening 6 of the base plate 1 due to one-sided or excessive loads on the entire drive unit, the bushing 12 with the corresponding outside or inside diameter will automatically be in the opening 6 of the Base plate 1 or mounted on the output shaft 5, which does indeed result in the occurrence of mechanical friction, but on the other hand prevents such a large Angular misalignment of the bushing 12 occurs that the bevel pinion 14 and bevel gear teeth 13 of the bushing 12 disengage.

Diese Kegelradverzahnung 13 ist an dem vom Ritzel 7 abgewandten Ende der Buchse 12 angeordnet, wobei die axiale Abmessung der Buchse 12 so gewählt ist, daß die Kegelradverzahnung 13 gerade in das Innere des Gehäuses hineinragt. Dort steht sie im Eingriff mit einem Kegelritzel 14, welches ebenso wie Buchse 12 aus Polyamid gefertigt ist und auf das eine Ende einer Gewindestange 9 aufgespritzt ist, welche, wie in Figur 1 zu sehen, parallel zur Grundplatte 1 und rechtwinklig zur Abtriebswelhe 5 angeordnet ist.This bevel gear toothing 13 is arranged on the end of the bushing 12 facing away from the pinion 7, the axial dimension of the bushing 12 being selected such that the bevel gear toothing 13 projects straight into the interior of the housing. There it is in engagement with a bevel pinion 14, which, like bushing 12, is made of polyamide and is sprayed onto one end of a threaded rod 9, which, as can be seen in FIG. 1, is arranged parallel to the base plate 1 and at right angles to the output shaft 5 .

Da die Kegelradverzahnung 13 der Buchse 12 nur geringfügig über die Fläche der Grundplatte 1 hervorragt, und ein Kegelritzel 14 verwendet wird, dessen Außendurchmesser geringer ist als der Abstand F, also die Höhe der Füße 4 der Motor-Getriebe-Einheit 3, kann dieser für die Betätigung der Endschalter 8 benötigte Abtrieb über die Gewindestange 9 ohne zusätzliche Abstandshalter zwischen der Motor-Getriebe-Einheit 3 und der Grundplatte 1 untergebracht werden.Since the bevel gear teeth 13 of the bushing 12 protrude only slightly over the surface of the base plate 1, and a bevel pinion 14 is used, the outer diameter of which is smaller than the distance F, that is, the height of the feet 4 of the motor-gear unit 3, this can be used for the actuation of the limit switch 8 required output can be accommodated via the threaded rod 9 without additional spacers between the motor-gear unit 3 and the base plate 1.

Die Gewindestange 9 ist in zwei Lagerböcken 15 in der Nähe ihrer Enden gelagert, die einstückig mit der Grundplatte 1 ausgebildet sind. Die Gewindestange 9 läuft dabei direkt im Polystyrol der Lagerböcke.The threaded rod 9 is mounted in two bearing blocks 15 near its ends, which are formed in one piece with the base plate 1. The threaded rod 9 runs directly in the polystyrene of the pillow blocks.

Auf der Gewindestange 9 sind, wie bei Figur 2 zu erkennen, zwei genormte Sechskant-Muttern aufgeschraubt, die durch einen parallel zur Gewindestange 9 befestigten Winkel 16 am Mitdrehen mit der Gewindestange gehindert sind. Hierdurch ergibt sich bei Drehung der Gewindestange 9 eine Axialbewegung der Muttern 10, die auf der dem Winkel 16 gegenüberliegenden Seite die Endschalter 8 betätigen. Selbstverständlich müssen Zähnezahl der Kegelradverzahnung 13 sowie des Kegelritzels 14 abhängig von der gewünschten Untersetzung zwischen Abtriebswelle 5 und Axialbewegung der Muttern 10 gewählt werden, um einerseits den Außendurchmesser des Kegelritzels 14 ausreichend klein gestalten und andererseits unter Berücksichtigung der sechs Außenflächen der Muttern 10, entsprechend einer 60°-Teilung, und unter Berücksichtigung der Steigung des Gewindes der Gewindestange 9 eine ausreichend genaue Justiermöglichkeit für die Endschalter 8 der Antriebseinheit zu erhalten.As can be seen in FIG. 2, two standardized hexagon nuts are screwed onto the threaded rod 9 and are prevented from rotating with the threaded rod by an angle 16 fastened parallel to the threaded rod 9. This results in an axial movement of the nuts 10 upon rotation of the threaded rod 9, which actuate the limit switches 8 on the side opposite the angle 16. Of course, the number of teeth of the bevel gear teeth 13 and the bevel pinion 14 must be selected depending on the desired reduction between the output shaft 5 and the axial movement of the nuts 10, in order on the one hand to ensure that the outside diameter of the bevel pinion 14 is sufficient design small and on the other hand, taking into account the six outer surfaces of the nuts 10, corresponding to a 60 ° division, and taking into account the pitch of the thread of the threaded rod 9, a sufficiently precise adjustment possibility for the limit switches 8 of the drive unit.

Figur 2 zeigt in einer Aufsicht auf die Grundplatte von der Seite der Motor-Getriebe-Einheit her deutlicher den Abgriff von der Buchse 12 zur Ansteuerung der Endschalter 8. Zunächsteinmal ist in der Figur 2 das Kegelritzel 14 am Ende der Gewindestange 9 zu erkennen, welches mit der Kegelradverzahnung 13 an der Stirnseite der Buchse 12 kämmt.Figure 2 shows a top view of the base plate from the side of the motor-gear unit more clearly the tap from the socket 12 to control the limit switch 8. First of all, the bevel pinion 14 at the end of the threaded rod 9 can be seen in Figure 2, which meshes with the bevel gear teeth 13 on the end face of the bush 12.

In der Ansicht der Figur 2 ist die Form der Verstärkungselemente 21, welche die Öffnung 6 und damit die Buchse 12 umgeben, gut zu erkennen: Die Öffnung 6 wird vom ringförmigen Teil der Verstärkungselemente 21 umschlossen, von dem aus radiale Ausläufer zu den Befestigungspunkten 28 der Motor-Getriebe-Einheit 3, die in Figur 2 mit gestrichelten Linien angedeutet ist, reichen. Die Verschraubungen der Motor-Getriebe-Einheit verlaufen damit durch jeweils zwei Verstärkungselemente 21 hindurch, und gleichzeitig sind die einzelnen Befestigungspunkte 28 auf beiden Seiten der Grundplatte 1 durch jeweils ein metallenes Verstärkungselement 21, und damit wärmeleitend, miteinander verbunden.The shape of the reinforcing elements 21, which surround the opening 6 and thus the socket 12, can be clearly seen in the view in FIG. 2: The opening 6 is enclosed by the annular part of the reinforcing elements 21, from which radial extensions extend to the fastening points 28 Motor-gear unit 3, which is indicated in FIG. 2 with dashed lines, is sufficient. The screw connections of the motor-gear unit thus run through two reinforcement elements 21, and at the same time the individual fastening points 28 on both sides of the base plate 1 are connected to one another by a metal reinforcement element 21, and thus in a heat-conducting manner.

Wie die Figur 2 weiterhin zeigt, leitet die Gewindestange 9 die von der Buchse 12 abgegriffene Drehbewegung aus dem niedrigen Freiraum zwischen Motor-Getriebe-Einheit 3 und Grundplatte 1, wie in Figur 1 zu erkennen, heraus, sodaß die Endschalter 8 sowie die sie betätigenden Muttern 10 auf der Gewindestange 9 im besser zugänglichen Bereich neben der Motor-Getriebe-Einheit 3 angeordnet sind.As FIG. 2 also shows, the threaded rod 9 guides the rotary movement tapped from the bush 12 out of the low free space between the motor-gear unit 3 and the base plate 1, as can be seen in FIG. 1, so that the limit switches 8 and the ones that actuate them Nuts 10 are arranged on the threaded rod 9 in the more accessible area next to the motor-gear unit 3.

Auf der Gewindestange 9 sind zwei herkömmliche, genormte und gleiche Sechskant-Muttern 10 angeordnet. Diese laufen mit einer ihrer sechs Außenflächen an einer zur Gewindestange 9 parallel im richtigen Abstand verlaufenden Außenfläche eines Winkels 16 entlang, und sind durch diese annähernd spielfreie Anlage am Mitdrehen mit der Gewindestange 9 gehindert. Hierdurch kommt es beim Drehen der Gewindestange 9 zu einer Bewegung der beiden Muttern 10 längs der Gewindestange 9.Two conventional, standardized and identical hexagon nuts 10 are arranged on the threaded rod 9. These run with one of their six outer surfaces on one to the threaded rod 9 parallel at the correct distance along the outer surface of an angle 16, and are prevented from rotating with the threaded rod 9 by this almost play-free system. As a result, when the threaded rod 9 is rotated, the two nuts 10 move along the threaded rod 9.

Abhängig von der gewählten axialen Ausgangsstellung der Muttern 10 auf der Gewindestange 9 entspricht jede Axialstellung der Muttern 10 bezüglich der Gewindestange 9 einer bestimmten Stellung des durch die Antriebseinheit zu bewegenden, nicht dargestellten Torblattes. Um einer gewünschten geöffneten oder geschlossenen Stellung ein Beenden des Öffnungs- oder Schließvorganges zu bewirken, müssen die Muttern 10 bezüglich der Gewindestange 9 axial so eingestellt werden, daß bei Erreichen der gewünschten Endpositionen des Torblattes jeweils eine der beiden Muttern 10 gerade jeweils eine der beiden Endschalter 8 neben der Gewindestange 9 durch Wegschieben des entsprechenden Kontaktes des Endschalters 8 betätigt. Die Endschalter 8 selbst sind im vorliegenden Fall durch Verschraubung zusätzlich zum Einstecken in seitliche Begrenzungsstege 29, die einstückig mit der Grundplatte 1 ausgebildet sind, befestigt.Depending on the selected axial starting position of the nuts 10 on the threaded rod 9, each axial position of the nuts 10 with respect to the threaded rod 9 corresponds to a specific position of the door leaf (not shown) to be moved by the drive unit. In order to bring about a termination of the opening or closing process for a desired open or closed position, the nuts 10 must be axially adjusted with respect to the threaded rod 9 such that when the desired end positions of the door leaf are reached, one of the two nuts 10 just one of the two limit switches 8 next to the threaded rod 9 actuated by pushing away the corresponding contact of the limit switch 8. In the present case, the limit switches 8 themselves are fastened by screwing in addition to being inserted into lateral limiting webs 29, which are formed in one piece with the base plate 1.

Die Gewindestange 9 ist in zwei Lagerböcken 15, die ebenfalls einstückig mit der Grundplatte ausgebildet sind, so im Abstand zu den Endschaltern 8 gelagert, daß die Muttern 10 beim Vorbeiwandern an den Endschaltern 8 entlang der Gewindestange 9 die Endschalter betätigen.The threaded rod 9 is mounted in two bearing blocks 15, which are also formed integrally with the base plate, at a distance from the limit switches 8 such that the nuts 10 actuate the limit switches as they move past the limit switches 8 along the threaded rod 9.

Auf der den Endschaltern 8 gegenüberliegenden Seite der Gewindestange 9 ist ein Winkel 16 auf der Grundplatte 1 aufgeschraubt, an dessen senkrecht zur Grundplatte 1 stehenden Außenfläche die beiden Muttern 10 mit jeweils einer ihrer Außenflächen entlang gleiten, ohne sich drehen zu können.On the side of the threaded rod 9 opposite the limit switches 8, an angle 16 is screwed onto the base plate 1, on the outer surface of which is perpendicular to the base plate 1, the two nuts 10 each slide along one of their outer surfaces without being able to rotate.

Da insbesondere bei der Inbetriebnahme des ganzen Torantriebs zunächst die Grundeinstellung der Muttern 10 auf der Gewindestange 9 ermittelt werden muß, wozu die Muttern 10 auf der Gewindestange 9 verdreht werden müssen, muß der die Muttern 10 am Drehen hindernde Winkel 16 leicht entfernt werden können. Gleichzeitig muß dieser Winkel 16 in seinem Abstand zur Gewindestange 9 leicht und genau justiert werden können. Deshalb sind in dem parallel zur Grundplatte 1 liegenden Schenkel des Winkels 16 Langlöcher angeordnet, die quer zur Längserstreckung des Winkels 16 verlaufen und durch die die Verschraubung des Winkels 16 mit der Grundplatte 1 geschieht. Auf diese Art und Weise kann nach Lockern der Befestigungsschrauben 30 der Abstand des Winkels 16 von der Gewindestange 9 eingestellt oder auch der Winkel 16 soweit von der Gewindestange 9 zurückgezogen werden, daß ein Verdrehen der Muttern 10 zum Verändern der Einstellung für die Endabschaltung möglich ist.Since the basic setting of the nuts 10 on the threaded rod 9 must first be determined, especially for the commissioning of the entire door drive, for which purpose the nuts 10 on the Threaded rod 9 must be rotated, the angle 10 preventing rotation of the nuts 10 must be easily removed. At the same time, this angle 16 must be able to be easily and precisely adjusted in its distance from the threaded rod 9. Therefore, 16 slots are arranged in the leg of the angle lying parallel to the base plate 1, which extend transversely to the longitudinal extent of the angle 16 and through which the angle 16 is screwed to the base plate 1. In this way, after loosening the fastening screws 30, the distance of the angle 16 from the threaded rod 9 can be adjusted or the angle 16 can be retracted from the threaded rod 9 to such an extent that the nuts 10 can be rotated to change the setting for the limit switch.

Im vorliegenden Falle besteht auch der Winkel 16 aus einem Kunststoff, nämlich Polyamid, wobei seine beiden Schenkel durch mehrere Querrippen 31 miteinander verstrebt sind.In the present case, the angle 16 also consists of a plastic, namely polyamide, its two legs being braced together by a plurality of transverse ribs 31.

Claims (10)

  1. Drive unit for pivotal doors
    - which is mounted in a housing comprising a baseplate and cover, having
    - a motor-and-gear unit (3) which is mounted by means of a plurality of feet spaced from the baseplate (1) within the housing,
    - the output shaft of the motor-and-gear unit extending outwards through an opening in the baseplate to drive the tilting door by way of a set-on pinion (7) and where appropriate a transmission element such as a chain (18),
    - having two limit switches (8) within the housing to end the opening or closing procedure,
    - the limit switches (8) being actuated by contact with elements which are screwed onto a threaded rod (9) and which do not rotate with the latter but are axially movable,
    characterized in that
    - the threaded rod (9) lies transversely with respect to the output shaft (5) of the motor-and-gear unit (3) and is rotated thereby,
    - a sleeve (12) is pushed coaxially onto an external diameter (11) of the pinion (7) pointing towards the motor side and has at its other end a bevel gear toothing (13) and is sufficiently long for this toothing to be within the housing,
    - the sleeve (12) just fails to touch with its external diameter the opening (6) of the baseplate (1),
    - the bevel gear toothing (13) meshes with a bevel pinion (14) at the end of the threaded rod (9), which is mounted in a manner transverse with respect to the direction of the output shaft (5) in bearing blocks (15) connected to the baseplate (1),
    - on which output shaft (5) two commercially available standard nuts (10) are axially movable for actuating the limit switches (8), and
    - are prevented from turning with the threaded rod (9) by an angle piece (16) screwed onto the baseplate (1) parallel to the threaded rod (9).
  2. Drive unit according to Claim 1, characterized in that both the bevel pinion (14) and the sleeve (12) are made from synthetic material.
  3. Drive unit according to Claim 2, characterized in that the bevel pinion (14) and the sleeve (12) are made from polyamide.
  4. Drive unit according to one of the preceding claims, characterized in that the sleeve (12) has incisions on the end side pointing towards the pinion (7) in the axial direction at a plurality of points on the periphery which are approximately as long as the distance by which it is pushed onto the external diameter (11) of the pinion (7).
  5. Drive unit according to one of the preceding claims, characterized in that the external periphery (11) of the pinion (7) onto which the sleeve (12) is pushed has a peripheral annular groove (22) into which there engages, once the sleeve (12) has been pushed on, a correspondingly shaped projection (23) which also runs peripherally in annular manner and is constructed on the internal periphery of the sleeve (12).
  6. Drive unit according to one of the preceding claims, characterized in that the sleeve (12) is prevented from turning with respect to the pinion (7) by means of one or more securing pins such as notched studs 26 which connect the pinion (7) and the sleeve (12) to one another from the end side, and/or a clamping ring surrounding the sleeve (12) in the region of the pinion (7).
  7. Drive unit according to one of the preceding claims, characterized in that the nuts (10) are hexagonal nuts.
  8. Drive unit according to one of Claims 1-6, characterized in that the nuts (10) are rectangular nuts.
  9. Drive unit according to one of the preceding claims, characterized in that the baseplate (1) of polystyrene has on both sides in the region of securing the motor-and-gear unit (3) reinforcing elements (21), of which one reinforcing element (21) is cast into the baseplate (1) and the other reinforcing element (21) is placed on the baseplate (1).
  10. Drive unit according to Claim 9, characterized in that the reinforcing elements (21) are of a sheet metal which has the shape of a ring from which extensions radiate, in the ends of which the bores through which the motor-and-gear unit (3) is screwed are located.
EP88121121A 1988-12-16 1988-12-16 Drive unit for overhead doors Expired - Lifetime EP0373254B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE88121121T DE3885623D1 (en) 1988-12-16 1988-12-16 Drive unit for up-and-over doors.
AT88121121T ATE95586T1 (en) 1988-12-16 1988-12-16 OPERATOR UNIT FOR SWINGING GATES.
EP88121121A EP0373254B1 (en) 1988-12-16 1988-12-16 Drive unit for overhead doors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88121121A EP0373254B1 (en) 1988-12-16 1988-12-16 Drive unit for overhead doors

Publications (2)

Publication Number Publication Date
EP0373254A1 EP0373254A1 (en) 1990-06-20
EP0373254B1 true EP0373254B1 (en) 1993-10-06

Family

ID=8199677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121121A Expired - Lifetime EP0373254B1 (en) 1988-12-16 1988-12-16 Drive unit for overhead doors

Country Status (3)

Country Link
EP (1) EP0373254B1 (en)
AT (1) ATE95586T1 (en)
DE (1) DE3885623D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59106826D1 (en) * 1991-02-27 1995-12-07 Kurt Berner Drive unit with 4 limit switches.

Family Cites Families (2)

* 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
DE8710940U1 (en) * 1987-08-11 1987-12-10 Berner, Kurt, 7407 Rottenburg Drive device for a door, in particular a garage door

Also Published As

Publication number Publication date
DE3885623D1 (en) 1993-12-16
ATE95586T1 (en) 1993-10-15
EP0373254A1 (en) 1990-06-20

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