DE102009018721A1 - Clutch has adjustment for axial or radial or angular offset between two clutch halves, where former clutch half has rotary axis and latter clutch half has another rotary axis - Google Patents

Abstract

The clutch has an adjustment for an axial or radial or angular offset between two clutch halves, where the former clutch half has a rotary axis and latter clutch half has another rotary axis. The former rotary axis and the latter rotary axis are mounted around offset rotational axis (a-D) in offset manner. The external diameter (DA) of the tappet is smaller than the internal diameter (di) of the recesses.

Description

The The invention relates to a coupling with a compensation of an axial and / or radial and / or angular offset between two coupling halves.

In DE 42 16 743 C1 describes a coupling that allows a radial offset between two coupling halves. This contains three concentric superimposed annular intermediate coupling members with radial arms. Each intermediate coupling member is connected via a link and a radial arm with the one coupling half and with another link and another radial arm with the other coupling half. The coupling halves have axial projections with recesses in which rubber bearings sit. The handlebars have pin bodies which are mounted in the rubber bearings. The intermediate coupling members are supported by shoulders and annular surfaces against each other.

A coupling for two rotating bodies, such as shafts, is in DE 42 20 049 A1 described with which any offset is to be compensated. By means of a membrane, which is connected on the one hand with the one and on the other with the other shaft, lines are to be formed in the membrane, which interrupt any radial connection between an outer edge and an inner edge of the membrane, whereby resilient regions are formed, which form back again and field the offenses.

The The above solutions are constructive and manufacturing technology elaborately designed, only small axial misalignment tolerances balance and work with relatively high losses.

task The invention is to provide a clutch with a balance of an axial and / or radial and / or angular offset between two coupling halves to develop, which has a simple structural design, compensates for very high axial and angular misalignments, virtually friction-free works and ensures high efficiency.

These Task is with the features of the first and second claim solved. Advantageous embodiments will be apparent from the Dependent claims.

at the inventive coupling to compensate for a axial and / or radial and / or angular offset between a first coupling half, which has a first axis of rotation and a second coupling half having a second axis of rotation, are the first axis of rotation and the second axis of rotation about a rotation axis offset arranged offset / mounted to each other and the first coupling half has several recesses distributed over the circumference an inner diameter and the second coupling half several above the circumference distributed driver with an outer diameter on, in which engage the driver, wherein the outer diameter the driver is smaller than the inner diameter of the recesses.

alternative The clutch can be several over the circumference on a first Semicircle distributed drivers with an outer diameter have on the second coupling half and the first Coupling half with several over the circumference be provided in a second circle distributed recesses, in which engage the drivers, with the centers of the two Subcircuits about a radial center offset to each other eccentric / offset are arranged and also here the outer diameter of the driver smaller than the inner diameter of the recesses.

at a rotational movement of the first coupling half in dependence from the offset to the second coupling half are one, several or all drivers with the recesses of the second coupling half in operative connection and transmit the rotational movement on this.

Of the Inner diameter of the recesses is substantially twice the rotation axis offset or the center offset plus the Outside diameter of the driver. If necessary, the Inner diameter of the recesses also slightly larger to get voted.

The Mitnehmer the second coupling half can in the recesses of the first coupling half preferred as far as possible roll off with little friction. The recesses are z. B. thereby formed the inner diameter of an inner ring of a ball bearing, on which the engaged carriers are supported and so transmit the required torque. The inner rings The ball bearings can rotate, causing no friction wear occurs. Alternatively, the driver in the form of a ball bearing be formed, which then at the inner diameter of a recess attack in the first half of the coupling and roll on this.

Prefers the drivers are mounted on a rubber sleeve.

It is possible, the carriers in the form of sleeves form, who sit on the rubber sleeves, the Rubber sleeves turn on with the second coupling half attached bolts are arranged.

The first coupling half preferably forms the output flange and the second coupling half the drive flange of the Clutch.

The Carrier sit in particular axially movable in the recesses.

By the coupling according to the invention, the one extremely has a simple structural design with few components, can radial offset, axial offset and also angular misalignment balanced almost frictionless between the two coupling parts become.

The Invention will be described below with reference to an embodiment and associated drawings explained in more detail. Show it:

1 : Front view of the coupling from the direction of the drive flange,

2 : Three-dimensional representation of a driver engaging in a recess.

Gem. 1 is a coupling according to the invention in the front view from the direction of the drive flange 1 (first coupling half) shown. The drive flange 1 has a first axis of rotation A1 and here has a total of 8 recesses 2 having an inner diameter di, each recess 2 on an inner ring 3.1 a ball bearing 3 is trained. The ball bearing 3 each sits with its outer ring 3.2 in a hole 4 the drive flange 1 , The ball bearings 3 and thus the recesses 2 are all on a common first pitch circle T1 with a first center M1, which is here on the first axis of rotation A1. Inside on the drive flange 1 are attachment positions 5 provided for securing a drive shaft, not shown.

The drive flange 1 is drivable about the first axis of rotation A1 by means of the drive shaft, not shown.

Behind the drive flange 1 (first coupling half) is seated at a distance that allows axial relative movement, the output flange 10 (second coupling half). The drive flange 10 is rotatable about a second axis of rotation A2 and has one of the number of recesses 2 corresponding number (here eight) of drivers 12 with an outer diameter DA on. The drivers 12 sit on a second common pitch T2 with a second center M2, which lies on the second axis of rotation A2.

The first axis of rotation A1 is eccentrically mounted to the second axis of rotation A2 about a rotational axis offset a _D , so that in all directions an additional radial offset between the drive flange 1 and output flange 10 can occur and this is compensated. Since the first center point M1 lies on the first axis of rotation A1 and the second center point M2 on the second axis of rotation A2, the radial center offset a _{T of} the two pitch circles T1, T2 corresponds to the rotational axis offset a _D. The inner diameter di of each recess 2 is greater than the outer diameter DA of the driver 10 , In the example shown, di = DA + 2a corresponds to _D = DA + 2a _T.

The three-dimensional representation of one in a recess 2 engaging driver 12 is in 2 shown.

Every driver 12 has a sleeve on its outer circumference 13 on that on a rubber sleeve 14 sitting, with the rubber sleeve 14 turn on with the output flange 10 connected bolts 15 is arranged.

During a rotary movement of the drive flange 1 Depending on the size of the offset a _D or a _T (s. 1 ) only some or all recesses 2 with its inner diameter di (here inner diameter di an inner ring 3.1 a ball bearing 3 ) to the outer diameter DA of the driver 12 on and transferred to this a torque, so that the output flange 10 also rotated. The inner ring rotates 3.1 of the ball bearing 3 , so that a low-friction power transmission is ensured.

If the offset a _D or a _T becomes smaller (see 1 ), so are more and more recesses 1 the drive flange 1 with the carriers 12 in operative connection and thereby drive the output flange 10 at. With an offset a _D and a _T = 0 are all drivers 12 with the inner diameters di the recesses 2 in active connection.

Consequently can easily do a radial compensation between the two Coupling halves done.

Out 2 it is obvious that the drivers 12 axially free in the recesses are movable, which in conjunction with the spacing of the coupling halves also an axial compensation between drive flange 1 and output flange 10 can be realized.

By the inventive design of the coupling can also an angular offset between the coupling halves be compensated, resulting in an elastic mounting of the driver is favored.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 4216743 C1 [0002]
• - DE 4220049 A1 [0003]

Claims (12)

Coupling with a compensation of an axial and / or radial and / or angular offset between a first coupling half, which has a first axis of rotation and a second coupling half, which has a second axis of rotation, wherein the first axis of rotation and the second axis of rotation about a rotational axis offset (a _D ) to each other eccentrically / staggered arranged / mounted and the first coupling half a plurality of circumferentially distributed recesses having an inner diameter (di) and the second coupling half a plurality of circumferentially distributed driver having an outer diameter (DA), which engage in the recesses, wherein the Outer diameter (DA) of the driver is smaller than the inner diameter (di) of the recesses. Clutch with a compensation of an axial and / or radial and / or angular offset between a first coupling half having a first axis of rotation and a second coupling half having a second axis of rotation and the first coupling half a plurality of circumferentially distributed on a first pitch recesses with a Inner diameter (di) and the second coupling half a plurality of distributed over the circumference on a second pitch circle driver having an outer diameter (DA), which engage in the recesses, the centers of the two pitch circles by a radial center offset (a _T ) to each other eccentric / offset are arranged and the outer diameter (DA) of the driver is smaller than the inner diameter (di) of the recesses. Coupling according to claim 1 or 2, characterized in that during a rotational movement of the first coupling half in dependence on the rotational axis offset (a _D ) and / or the radial center offset (a _T ) to the second coupling half one, several or all drivers with the recesses of the second coupling half are in operative connection and the rotary motion on this ask. Coupling according to one of claims 1 to 3, characterized in that substantially di ≥ DA + 2a _D or di ≥ DA + 2a _T. Coupling according to one of claims 1 to 4, characterized in that the drivers in the recesses roll off. Coupling according to one of claims 1 to 5, characterized in that the recesses by the inner diameter an inner ring of a ball bearing are formed, in which the Driver intervene. Coupling according to one of claims 1 to 6, characterized in that the drivers mounted rotatably are. Coupling according to one of claims 1 to 7, characterized in that the drivers in the form of a ball bearing are formed. Coupling according to one of claims 1 to 8, characterized in that the drivers on a rubber sleeve are stored. Coupling according to one of claims 1 to 9, characterized in that the drivers in the form of sleeves are formed, which sit on the rubber sleeves, wherein the rubber sleeves on with the second coupling half attached bolts are arranged. Coupling according to one of claims 1 to 10, characterized in that the first coupling half a drive flange and the second coupling half Output flange is. Coupling according to one of claims 1 to 11, characterized in that the drivers axially movable in the Recesses sit.