DD234908A1

DD234908A1 - CLUTCH OF TWO MACHINE PARTS

Info

Publication number: DD234908A1
Application number: DD27359085A
Authority: DD
Inventors: Gerd Beierlein; Gottfried Neumaerker; Lutz Lampe; Reinhard Silge
Original assignee: Hermsdorf Keramik Veb
Priority date: 1985-02-27
Filing date: 1985-02-27
Publication date: 1986-04-16
Also published as: DE3545991A1; JPS61201928A

Abstract

Eine Kupplung zweier Maschinenteile soll so ausgebildet werden, dass sich mindestens einer der Maschinenteile relativ zum anderen parallel und rechtwinklig zu einer Drehachse bewegen kann und zwischen beiden Maschinenteilen eine im wesentlichen drehstarre Verbindung besteht. Die Kupplung soll wenig materialaufwendig und kompendioes sein und Gleitfuehrungen wegen der Verschleisserscheinungen vermeiden. Dazu wird an beiden Maschinenteilen nur eine im wesentlichen tangential zur Drehbewegung um die Drehachse gerichtete flexible Strebe starr befestigt. Die Befestigung kann kraft- und/oder formschluessig erfolgen. Fig. 3A coupling of two machine parts should be designed so that at least one of the machine parts can move relative to the other parallel and perpendicular to a rotation axis and between two machine parts there is a substantially torsionally rigid connection. The coupling should be less material and kompendioes and avoid Gleitfuehrungen because of the wear. For this purpose, only a substantially tangential to the rotational movement about the axis of rotation directed flexible strut is rigidly attached to both machine parts. The attachment can be force and / or formschlüssess. Fig. 3

Description

embodiments

Die Erfindung wird nachstehend an Hand der schematischen Zeichnung näher erläutert. Es zeigen:The invention will be explained in more detail below with reference to the schematic drawing. Show it:

Fig. 1: eine Draufsicht auf eine erfindungsgemäße Kupplung,1 shows a plan view of a coupling according to the invention,

Fig. 2: einen Schnitt durch die Kupplung der Fig. 1 entlang der Linie A-A, wobei das Gehäuse weggelassen wurde, Fig. 3: einen Axialschnitt zweier gekuppelter Wellen,2 shows a section through the coupling of FIG. 1 along the line A-A, wherein the housing has been omitted, FIG. 3 shows an axial section of two coupled shafts,

Fig. 4: einen Schnitt der Fig. 3 entlang der Linie B-B,4 shows a section of FIG. 3 along the line B-B,

Fig. 5: eine Verbindungsmöglichkeit von Strebe und Maschinenteil,5 shows a connection possibility of strut and machine part,

Fig. 6: eine weitere Verbindungsmöglichkeit undFig. 6: another connection option and

Fig. 7: eine dritte Verbindungsmöglichkeit von Strebe und Maschinenteil.Fig. 7: a third connection possibility of strut and machine part.

In den Fig. 1 und 2 ist ein Rotor 1 in einem Gehäuse 2 um eine Achse X1-X1 drehbar gelagert. Der Rotor 1 trägt auf einem Kragen einen Signalerzeuger 4, der als Ringmagnet mit wechselnder Polarität ausgebildet ist. Auf dem Rotor 1 ist mit Hilfe eines Wälzlagers 5 ein Stator 6 mit einem Stift 7 und einem Sensor 8 ebenfalls um die Achse X1-X1 drehbar gelagert. Eine Platte 9 fixiert das Wälzlager 5 exakt in einem Sitz 10 des Rotors 1. Am Gehäuse 2 befindet sich ein weiterer Stift 11. Eine flexible Strebe 12 mit federnden Hakenenden 13,14 verbindet die beiden Stifte 7 und 11 miteinander, wobei die federnde Wirkung der Hakenenden T3,14 ein schlupffreies oder zumindest schlupf armes dichtes Anliegen der Strebe 12 an den Stiften 7,11 gewährleistet.In FIGS. 1 and 2, a rotor 1 is rotatably supported in a housing 2 about an axis X1-X1. The rotor 1 carries on a collar a signal generator 4, which is designed as a ring magnet with alternating polarity. On the rotor 1, a stator 6 with a pin 7 and a sensor 8 is also rotatably mounted about the axis X1-X1 by means of a rolling bearing 5. A plate 9 fixes the roller bearing 5 exactly in a seat 10 of the rotor 1. On the housing 2 is another pin 11. A flexible strut 12 with resilient hook ends 13,14 connects the two pins 7 and 11 with each other, wherein the resilient action of Hooking T3,14 a slip-free or at least slip poor tight fit of the strut 12 on the pins 7,11 guaranteed.

Beim Drehen des Rotors 1 um die Achse X₁-Xi in Richtung eines Pfeiles 15 wird der Stator 6 durch die Strebe 12 festgehalten. Die Federkraft der Hakenenden 13,14 ist so groß, daß sie durch die Drehung des Rotors 1 nicht aufgebogen wird und damit eine Signalbeeinflussung nicht stattfindet. Die Signale werden beim Drehen des Rotors 1 und damit des Signalerzeugers 4, beim Polwechsel vor dem Sensor 8 erzeugt. Da zwischen den Hakenenden 1.3,14 und den Stiften kein Schlupf auftritt, entsteht auch kein Materialverschleiß infolge Reibung. Andererseits lassen die Taumelbewegungen der rotierenden Teile eine Relativbewegung zwischen Stators und Gehäuse 2 in axialer und radialer Richtung entstehen, die die Strebe 12 auf Biegung beanspruchen.When rotating the rotor 1 about the axis X ₁ -Xi in the direction of arrow 15, the stator 6 is held by the strut 12. The spring force of the hook ends 13,14 is so large that it is not bent by the rotation of the rotor 1 and thus a signal influencing does not take place. The signals are generated when turning the rotor 1 and thus the signal generator 4, the pole change in front of the sensor 8. Since there is no slippage between the hook ends 1,3,14 and the pins, there is no material wear due to friction. On the other hand, the tumbling movements of the rotating parts cause a relative movement between the stator and the housing 2 in the axial and radial directions, which stress the strut 12 in bending.

In den Fig. 3 und 4 sind zwei Wellen 29, 30 in Lagern 31, 32 um Achsen X₂-X₂, X3-X3 drehbar gelagert, die an ihren einander zugekehrten Enden mit Flanschen 33, 34 versehen sind. Zwischen den Flanschen 33, 34 ist eine Strebe 35 angeordnet, die mit prismatisch gestalteten Abkröpfungen 36, 37 im Flansch 33 bzw. 34 befestigt ist. Die Welle 29 ist die antreibende und die Welle die getriebene Welle. Beide Wellen 29, 30 sind aus Toleranzgründen in Richtung der Doppelpfeile 38 und 39 sowie im Winkel relativ zueinander beweglich.In FIGS. 3 and 4, two shafts 29, 30 are rotatably mounted in bearings 31, 32 about axes X ₂ -X ₂ , X ₃ -X ₃ , which are provided with flanges 33, 34 at their mutually facing ends. Between the flanges 33, 34 a strut 35 is arranged, which is fastened with prismatically shaped offsets 36, 37 in the flange 33 and 34, respectively. The shaft 29 is the driving shaft and the shaft is the driven shaft. Both shafts 29, 30 are movable for tolerance in the direction of the double arrows 38 and 39 and at an angle relative to each other.

Beim Drehen der Welle 29 wird die Welle 30 infolge der Verbindung über die Strebe 35 und der Flansche 33, 34 im wesentlichen synchron zur Welle 29 gedreht. Im Verlauf einer Umdrehung der Wellen 29 und 30 treten durch die Abweichungen der Achsen X₂-X₂ und X₃-X₃ voneinander kleine Biege- und Torsionsverformungen der Strebe 35 ohne Längenänderungen auf.When rotating the shaft 29, the shaft 30 as a result of the connection via the strut 35 and the flanges 33, 34 is rotated substantially synchronously with the shaft 29. In the course of a revolution of the shafts 29 and 30 occur by the deviations of the axes X ₂ -X ₂ and X ₃ -X ₃ from each other small bending and torsional deformation of the strut 35 without length changes.

Verschleißerscheinungen durch Reibung an den Verbindungsstellen zwischen der Strebe 35 und den Flanschen 33, 34 sind nicht vorhanden.Wear due to friction at the joints between the strut 35 and the flanges 33, 34 are not present.

In Fig. 5 ist ein Stift 16 in Draufsicht dargestellt, dessen Seiten zumindest im Bereich der Verbindung mit einer Strebe 17 mit Abfiachungen 18 versehen ist. Die Strebe 17 hat ihrerseits eine längliche Öse 19 an ihrem dem Stift 16 zugekehrten Ende, die so über das mit den Abflachungen 18 versehene Stifteride geführt wird, daß ihre Längsseiten an den Abfiachungen anliegen. Insgesamt ist die Öse 19 so groß, daß sie rundherum das flache Stiftende satt berührt. Der Stift 16 kann sowohl dem Stift 7 als auch dem StiftIn Fig. 5, a pin 16 is shown in plan view, the sides of which is provided at least in the region of the connection with a strut 17 with Abfiachungen 18. The strut 17 in turn has an elongated eyelet 19 at its end facing the pin 16, which is guided over the provided with the flats 18 Stifteride so that their longitudinal sides abut the Abfiachungen. Overall, the eyelet 19 is so large that it touches the flat end of the pen all around. The pin 16 can be both the pin 7 and the pin

der Fig. 1 und 2 entsprechen. -Figs. 1 and 2 correspond. -

Eine Draufsicht auf einen Stift 20 zeigt auch die Fig. 6. Eine Strebe 21 ist in der Nähe des Stiftes 20 als Haken 22 ausgebildet, der mit seinem freien Ende 23 in eine Nut oder Bohrung 24 des Stiftes 20 gedruckt ist. Der Stift 20 ist den Stiften 7 und 11 der Fig. 1 und vergleichbar, die keine Abnutzungserscheinungen zulassen, weil keine Reibungen zwischen dem Stift und der Strebe 21 bei entsprechenden Relativbewegungen stattfinden.A strut 21 is formed in the vicinity of the pin 20 as a hook 22 which is printed with its free end 23 in a groove or bore 24 of the pin 20. The pin 20 is similar to the pins 7 and 11 of FIG. 1 and which do not allow wear and tear, because there is no friction between the pin and the strut 21 with corresponding relative movements.

In der Draufsicht der Fig. 7 ist eine Strebe 25 mit dem halbrunden Ende eines Stiftes 26 mittels einer Schraube 27 unter Zwischenschaltung einer Scheibe 28 verschraubt. Auch in diesem Fall gilt das zu den vorigen Figuren Gesagte.In the plan view of Fig. 7, a strut 25 is screwed to the semicircular end of a pin 26 by means of a screw 27 with the interposition of a disc 28. In this case too, what has been said about the previous figures applies.

Die Erfindung ist keinesfalls an die dargestellten Ausführungsformen gebunden. Beispielsweise ist es auch möglich, die Strebe gegen Verdrehungen gesichert unmittelbar an den Maschinenteilen zu verschrauben. Die Ränder der Flansche 33 und 34 mit nicht kreisrunden Ausnehmungen für die Abkröpfungen 36 und 37 mit entsprechendem Querschnitt können zur Erleichterung des Zusammenbaues und zur Verringerung der Reibung mit der Strebe 35 entsprechend erhaben gestaltet sein. Die Ausnehmungen für die Abkröpfungen sind vorteilhaft durchgehend und an der Peripherie der Flansche 33,34 angebracht, um die Montage zu vereinfachen. Die Strebe und ihre Abkröpfungen an den Enden können aus einem Stück desselben Materials oder aus unterschiedlichen Materialien bestehen.The invention is by no means bound to the illustrated embodiments. For example, it is also possible to bolt the strut against rotation secured directly to the machine parts. The edges of the flanges 33 and 34 with non-circular recesses for the offsets 36 and 37 of corresponding cross-section may be designed to facilitate the assembly and to reduce the friction with the strut 35 correspondingly raised. The recesses for the offsets are advantageously continuous and attached to the periphery of the flanges 33,34 to facilitate the assembly. The strut and its offsets at the ends may consist of one piece of the same material or of different materials.

Claims

Invention claim:

1. Coupling two machine parts, of which at least one machine part moves relative to other machine part parallel, perpendicular and at an angle to a rotation axis, characterized in that is rigidly attached to both machine parts substantially tangential to a rotational movement about the axis of rotation only one flexible strut ,

2. Coupling according to item 1, characterized in that the one machine part in the bearing housing for a rotor and the other machine part is a cantilevered on the rotor stator.

3. Coupling according to item 1, characterized in that both machine parts are mutually facing flanges of two substantially mutually parallel waves.

4. Coupling according to items 1 to 3, characterized in that pins are provided on the machine parts, which are at least partially enclosed by the struts without slippage.

5. Coupling according to item 1 to 4, characterized in that the strut is bolted to the machine parts.

6. Coupling according to item 1 to 3, characterized in that the ends of the strut are bent and has a cross section which deviates from the circular shape.

For this 1 page drawings
Field of application of the invention

The invention relates to a coupling of two machine parts, of which at least one machine part moves relative to the other parallel, at right angles and at an angle to a rotational axis. It can be used for virtually torsionally rigid connection of two substantially parallel shafts as well as for preventing rotation of a cantilever mounted on a rotor stator, as they reach, for example, in Zündgeber of internal combustion engines for use. If two shafts are connected to each other, they can have both misalignment and directional errors.

Characteristic of the known technical solutions

In the case of ignition sensors, signal generators, for example magnetic poles, and sensors, for example Hall elements, are provided on the rotor for signaling during rotation of the magnetic poles with respect to the Hall elements. As a result of manufacturing tolerances associated with the crankshaft or camshaft of an internal combustion engine rotor performs axial or Taumeibewegungen, which then lead to changes in the distance between the signal generators and the sensors and thus erroneous Signalgäbe, if the stator is not due to the tolerance-related movements of the rotor participates. For this reason, the stator on the rotor, but secured against rotation, stored. The rotation is ensured by means of a pin and a slot or a claw, of which one securing element is attached to the stator and the other to the housing. As a result of the tumbling and axial displacements of the rotor, the pin constantly moves in the slot or the claw, and it comes on both parts to wear, which also affect the signal also incorrect. The same phenomena occur when the rotor is mounted separately from the crankshaft and connected to it via pin and slot or claw. When using diaphragm or coil springs or resilient tabs as coupling elements wear is not or hardly on, but the rotatable transmission or support for non-aligned axes of rotation is not or only with considerable space and at the expense of destructively acting constraining forces possible. This space requirement is particularly necessary when the coil spring is secured with its axis parallel to the axes of rotation. ,

Object of the invention

By the invention, the indicated deficiency to be eliminated and a little complex, kompendiöse, secured against twisting and wear and tear coupling two machine parts are created.

Explanation of the essence of the invention

The object of the invention is therefore to design a clutch so that a little material and space-consuming rotatable connection of two machine parts is formed, which is particularly useful even when the machine parts are not aligned waves.

According to the invention, this object is achieved in that a flexible strut is rigidly fixed to both machine parts substantially tangential to a rotational movement about the axis of rotation. In this case, the tangential orientation and arrangement of the strut means that in addition to the radial direction component nor a right angle to this component is present and that this directed at right angles to the radial component direction component is advantageously greater than the radial component. Advantageously, one machine part is a bearing housing for a rotor and the other machine part is a stator which is cantilevered on the rotor. The strut allows the stator to participate in the wobble and axial movements of the stator while securing against rotation of the stator relative to the housing. It ensures a flat and secure connection of the stator to the housing, which undergoes bending in accordance with the wobble and axial movements of the rotor. In another advantageous embodiment, both machine parts are mutually facing flanges of two with their axes of rotation are not completely aligned with each other to which the strut outside the axes of rotation is attached substantially tangentially. The strut is located between the flanges and ensures a low overall height. Since the angular velocities vary differently in the course of one revolution of the waves, the strut experiences changing slight deformations which cancel out in the starting position. The attachment of the strut to the machine parts can be solved differently. An advantageous attachment results when pins are provided on the machine parts, which are covered by the struts at least partially slip. For this purpose, deviating from the circular shape eyelets or offsets may be provided at the strut ends, which protrude into corresponding recesses in the pins. It is also advantageous if the struts to eliminate any slip with the pins or the machine parts are screwed twist-proof.

The invention avoids sliding bearings with their wear phenomena or technologies to minimize such wear and tear as low as possible. It bypasses material-consuming membrane and coil springs, of which the latter are also associated with a voluminous construction. Finally, the invention enables a simple coupling of non-aligned shafts. In any case, the connection of two machine parts, of which at least one part is slightly movable relative to the other axially and radially with respect to a rotational movement and the axis of rotation can be pivoted.