DE102007050562A1 - Angular contact bearing unit e.g. taper roller bearing unit, for use in motor vehicle, has elastic clamping ring blocked at ring surface against movements in radial direction such that direction is opposite to another radial direction - Google Patents

Abstract

The unit (24) has an elastic clamping ring (27) preloaded against a ring surface in a radial direction, such that the radial preloading of the ring on the surface is resolvable into axial preload components. Bearing rings (35, 36) and rolling bodies (31-34) are placed against each other in a preloaded manner in the unit by the preload force components in a self-holding manner. The ring is blocked at the surface against movements in another radial direction such that the latter radial direction is opposite to the former radial direction. An independent claim is also included for a method for assembling a bearing unit.

Description

Field of the invention

• 1. The invention relates to a storage unit with two backlash-free inclined bearings, wherein the angular contact bearings at least from bearing rings and rolling elements are formed in the - An elastic clamping ring biased with its own radial bias against at least one annular surfaces which is at least axially coupled with another of the bearing rings is - The clamping ring in a radial direction against the Ring surface biases, while the radial bias the clamping ring on the annular surface in axial biasing force components is dismantled, - The bearing rings and rolling elements biased against each other by means of the biasing force components the unit are self-locking secured.

Background of the invention

The The invention relates to a storage unit of two mutually engageable Angular contact bearings. Such storage units are in all areas to find the industry and in particular in motor vehicles and angular contact bearings of the type inclined roll or Angular contact ball bearings.

Angular contact ball bearings are rolling bearings with balls as rolling elements and usually with ball grooves as inner and outer raceway. The careers go into oblique shoulders, so that the rolling contacts between the raceways and balls each lie on a contact line, which deviate with a 90 ° Contact angle to the axis of rotation and radial plane of the respective Bearing is inclined.

Tapered roller bearings are bearings, with cylindrical rollers or tapered rollers, where the raceway with cone angle to the axis of rotation and radial plane of each Lagers is inclined and where the contact angle of the rolling contact therefore also deviates from 90 °.

The Radial plane of both bearing types is the plane perpendicular to the axially aligned axis of rotation is pierced.

The Angular contact bearings in the generic bearing unit even before mounting the bearing unit in the housing axially rectified with its axis of rotation for the purpose of clearance adjustment and especially against one another for the purpose of backlash, d. H. biased. A typical application example for Such storage units in vehicles are pinion shaft bearings. These storage units are usually self-holding, d. H. she be as finished pre-assembled and partly also pre-stressed unit delivered to the bearings for assembly. The usual Aids for the unity of the unit during storage, during transport and during assembly, such as sleeves or Fo lien, which usually hold together a unit and must be removed before assembly, are for the storage units are not provided.

in the Vehicle construction, such storage in relatively large Quantities produced. These should therefore be inexpensive Can be produced, easy to transport and quick to assemble.

US 1,908,474 shows such a bearing unit with angular contact ball bearings. Each of the angular contact ball bearings has an inner and an outer ring. In each case an outer ring of a bearing is an outer ring of the other bearing and an inner ring of a bearing is an inner ring of the other bearing in the unit axially opposite. There are also storage units of the type are known in which the two bearing against each other bearing a common bearing ring, preferably a common outer ring with two raceways, and two against each other to be set bearing rings, preferably inner rings. In the case in which the bearings have a common bearing ring, this has one of the rolling element raceways for each of the angular contact bearings.

Each inner ring of the bearing unit after US 1,908,474 is provided on the inner surface with a punctiform radial annular groove. Each annular groove is bounded on one side axially by a radially inwardly projecting projection which forms an undercut in the axial direction. The one flank of the projection is part of the end face of the inner ring, which faces the axially opposite inner ring of the other inclined bearing of the unit. The other flank is an annular surface which bounds the annular groove on one side inside.

The Ring surface is in any longitudinal sections through the bearing unit along the axis of rotation by one each to the radial plane described annular surface inclined generatrix, the on the circumference, the circumference of the inner lateral surface describe a truncated cone.

The storage unit after US 1,908,474 is biased in itself by a clamping ring. The clamping ring is elastic. The angular contact bearings are axially guided toward each other during assembly to the bearing unit until the outer rings abut each other. The clamping ring is then compressed radially inwardly to the inner diameter of an inner ring and inserted axially. In this assembly, the clamping ring is biased radially inward, introduced into the inner rings and so positio ned that each radially opposite an inner friction surface and an outer friction surface.

Of the Clamping ring can not in the inner rings to its initial dimensions rebound, as the radial dimensions of the inner friction surfaces are designed smaller than that of the respective outer Friction surface. By stored energy is the Clamping ring, each with an annular surface against one of the annular surfaces preloaded on the inner ring. The outer ring surfaces are like the outer surface of a truncated cone formed and correspond in terms of dimension and cone angle so that the outer ring surface is also under Consideration of minimum and maximum installation tolerances in each operating condition of the bearing unit with the biasing forces the clamping ring remains biased against the inner surface.

The Cross sections of the clamping ring are chosen so that the remaining Preload force is large enough to increase the preload in the To ensure storage unit under all operating conditions. The biasing forces of the radially outward bias of the clamping ring are on the inner annular surfaces in axial Disassembled force components. The axial force components on the one Inner ring are to the axial components on the other inner ring opposite, so that the inner rings pulled axially towards each other and thus be biased against the rolling elements. That goes on until the axial play in the camps is overcome is and the balls clamped between the bearing rings backlash are. As a rule, the faces of each other strained inner rings in this position still by a axial gap (remainder of the axial setting dimension) separated from each other. The cohesion under elastic bias of two bearings to a storage unit in all operating conditions is secured.

Summary of the invention

The The object of the invention is to provide a storage unit which is easy to manufacture and assemble.

The Inventive storage unit has at least two angular contact bearings in the form of angular ball or Tapered roller bearings. It is also conceivable both types of storage to be used in one unit. The means that the cohesion of Unit in itself and the bias secures is at least one clamping ring. The angular contact bearings are by one or more bearing ring in the form of inner rings and one or more outer rings educated. It is also conceivable that the unit has two angular bearings having a common inner or outer ring. In In this case, the common inner or outer ring has two Runways on two sloping shoulders on. It is also conceivable that in each case two inner or outer rings by means of a Sleeve are axially fixed together. There are too Storage units provided in which an angular bearing or both angular contact bearings more than one row of rolling elements in which the diameter of the pitch circle from one row to another Row or from angular contact bearing to angular contact of each other differ and in which rolling elements with each other Different diameters are installed.

The Bearing rings biased to produce the preload in the bearing to be, lie axially opposite each other and are axially at least as far as movable, that by means of the angular contact bearings axial preload components free of play or elastic axial can be biased against each other.

The Biasing force components are axially directed partial forces from the radial forces passing through the clamping ring or the Clamping rings Ringflache (s) are applied and due to the cone angle as well as the inclined plane in normal, radial and disassemble axial forces. The axial forces are the preload components.

The Ring surfaces are formed closed in the circumferential direction or in the circumferential direction for example by lubricating oil channels interrupted. The course of the generatrices of the ring surfaces in any longitudinal sections along the axis of rotation of the Bearing unit can be straight, concave or convex, so that the ring surfaces frustoconical-straight or frustoconical-bulbous or are truncated-inwardly domed. The cone angle or the slope to the vertical or the axis of rotation are designed so that the clamping ring to this by self-locking is held.

self-locking describes in mechanics the resistance caused by friction against slippage or twisting of two adjacent ones Body. Once the stiction overcome between the two bodies is, the bodies are no longer self-locking. In practice By self-locking is meant the property of two or more interacting elements, not independently to move or solve.

The Self-locking is due to the angle of inclination, the surface roughness the contact surfaces, the material pairing, the sliding speed, influenced by the lubricant and the heating. Of the preferred cone angle of the annular surface to the axis of rotation the bearing unit is at least 87 °.

The clamping ring engages, for example, radially in an annular gap between the facing bearing rings or between a bearing ring and a spacer or compensation ring. The annular gap is flank side z. B. limited by the end faces of two axially adjacent to each other to be biased bearing rings. In this case, the annular surfaces are formed on the end faces and are inclined towards each other. The clamping ring is biased radially against both of the annular surfaces. Alternatively, the annular surfaces are axially fixedly coupled to the bearing rings and thereby formed on spacers, sleeves or the like, so that axial biasing forces of the annular surfaces on the Dis dance pieces are transferable to the bearing rings.

The Ring surfaces are located on the annular gap axially each other facing towards and approaching in the radial Direction in which the clamping ring is biased to each other. In the opposite direction remove the ring surfaces from each other - d. H. when mounted in the storage unit Clamping ring directed radially outwards against the ring surfaces is biased, reduces the axial distance between the Ring surfaces with increasing radial distance from the axis of rotation. If the clamping ring has been spread elastically before assembly and when installed inward biases in, decreases the distance of the ring surfaces approaching the axis of rotation.

The Invention provides that the storage unit at least one spacer having. The axially adjacent bearing rings are by means of the spacer axially held at a distance. In this case the annular gap is thus on the one hand by one of the bearing rings and limited to the other side by the spacer.

The Ring surface is alternatively formed in an annular groove. The annular groove is in one or alternatively in both of the vorzuspannenden Bearing rings formed. The annular grooves are located radially opposite. The clamping ring engages radially in both annular grooves and against the Annealed ring surface in one of the annular grooves and as well supported in the other axial direction on one flank of the other groove. The bearing rings to be preloaded are either inner rings or outer rings. The annular groove is either an outer or an inner groove. At least one of the annular grooves has at least one annular surface Mistake. It is also conceivable that the clamping ring in each annular groove abuts in each case one of the annular surfaces.

A storage unit with at least one spacer is z. B. constructed as follows:
The spacer is preferably tubular. The axially opposite bearing rings are held by means of the spacer axially on Dis dance. The spacer is at least axially connected to one of the bearing rings.

In order to the bearing unit is self-holding and the bearing rings against each other are biased, is at least one of the inclined annular surfaces formed on one of the bearing rings and another on the spacer. The ring surfaces are frontally or at the front Sections or formed in annular grooves.

The Ring grooves are radially from the outside or radially from the inside in the bearing rings or in the spacer brought in. The bearing ring and the spacer are for example over a clamping ring connected together. The clamping ring becomes elastic expanded and pushed axially as long on the bearing ring until the Clamping ring in an outer annular groove of the bearing ring snaps. The clamping ring is partially radially outward out of the ring groove. Following is an end of the spacer, which may be formed as a spacer ring or as a spacer sleeve can, pushed on the clamping ring.

The End of the spacer sleeve is provided with a chamfer, so that the spacer sleeve can be pushed onto the clamping ring. As a result, the clamping ring by means of the spacer sleeve first radially displaced in the annular groove until an inner annular groove aligned on the bearing ring axially to the annular groove on the spacer ring is and the clamping ring snaps into the inner annular groove. At least one of the annular grooves has one of the annular surfaces, against the bias of the clamping ring radially outward or inward is biased. It is also conceivable that the inner groove on the bearing ring and the outer groove formed on the spacer ring is so that one end of the bearing ring over the spacer sleeve is pushed.

A self-mount via a spacer with simultaneous axial bias of the angular contact bearing according to the invention has, for example, ff. Features:
The spacer has two annular grooves. Each of these annular grooves is in each case opposite an annular groove of the bearing ring so that two pairs of radially einan of the opposite annular grooves is formed, in each of which a clamping ring or alternatively engages a locking ring. In addition, a further annular groove may be formed between an end-side portion of the bearing ring and the spacer ring. The frontal sections are provided with the annular surfaces. The annular surfaces are inclined to each other so that their distance from one another in the direction in which the clamping ring is biased decreases. In addition, the axial width of the annular groove is variable.

Increasing the clearance in the bearing unit in all operating states temporarily lead to the cancellation of self-locking. Since the clamping ring is biased against the annular surface (s), the clamping ring is the corresponding radial amount Immediately adjust elastically the increasing axial play, so that the backlash is secured in all operating conditions.

• – Radiales Vorspannen eines ersten Spannrings durch Spreizen oder radiales Einengen;
• – Einschnappen in eine Ringnut in einem Endstück eines Distanzstücks – der Spannring schnappt dabei entweder in eine innere Ringnut auf oder in eine äußere ein;
• – Radiales Vorspannen des ersten Spannrings bis dieser in die Ringnut in dem Endstück zumindest teilweise radial eintaucht, dabei einen Endabschnitt eines Lagerringes von einem der Schräglager und das Endstück solange axial ineinander Schieben, bis der Spannring in eine Ringnut des Endabschnitts radial einschnappt, und mindestens solange bis das Distanzstück sowie der Lagerring axial stirnseitig aneinander anschlagen – dabei ist es denkbar das der Endabschnitt des Lagerrings in das Endstück des Distanzstücks oder das Endstück des Distanzstücks in den Endabschnitt des Lagerrings gesteckt wird;
• – Radiales Vorspannen durch Aufspreizen oder Einengen eines zweiten Spannrings und Auf- oder Einschnappen in eine Ringnut an einem weiteren Endabschnitt in einem weiteren Lagering eines anderen der Schräglager;
• – Axiales Ineinanderschieben – Auf- oder Einschieben – des einen mit Wälzkörpern vormontierten Lagerringes und eines für beide Schräglager gemeinsamen Lagerring und zeitgleich oder zeitversetztes axiales Ineinanderschieben – Auf- oder Einschieben – des anderen mit Wälzkörpern vormontierten Lagerrings in den gemeinsamen Lagerring;
• – Axiales Ineinanderschieben – Auf- oder Einschieben – eines weiteren Endstücks des Distanzstücks und des anderen Endabschnitts am anderen Lagerrings solange bis der zweiten Spannring in eine Ringnut des anderen Endstücks am Distanzstück radial nach außen oder innen einrastet;
• – Radiales Vorspannen eines dritten Spannrings durch Aufspreizen oder Einengen und axial der Einheit zuführen, bis der dritte Spannring radial in eine axial zwischen dem Distanzring und dem anderen der Lagerringe ausgebildete Ringnut ein- oder aufschnappt;

The invention further provides a method for mounting a bearing unit by at least the following steps:

• - Radial biasing of a first clamping ring by spreading or radial concentration;
• - Snapping into an annular groove in an end piece of a spacer - the clamping ring snaps either in an inner annular groove or in an outer one;
• - Radial biasing of the first clamping ring until it at least partially dips radially into the annular groove in the tail, while an end portion of a bearing ring of one of the angular contact and the tail axially while pushing each other until the clamping ring snaps radially into an annular groove of the end portion, and at least as long until the spacer and the bearing ring axially abut each other frontally - it is conceivable that the end portion of the bearing ring is inserted into the end piece of the spacer or the end piece of the spacer in the end portion of the bearing ring;
• - Radial biasing by spreading or narrowing a second clamping ring and snapping or snapping into an annular groove at a further end portion in another bearing ring of another of the angular contact bearings;
• - Axial telescoping - pushing or pushing - one with rolling elements preassembled bearing ring and a common bearing for both angular contact bearing and simultaneous or time-delayed axial telescoping - Auf or insertion - of the other pre-assembled with rolling bearing ring in the common bearing ring;
• - Axially telescoping - pushing or pushing - another end of the spacer and the other end portion on the other bearing ring until the second clamping ring engages in an annular groove of the other end piece on the spacer radially outward or inward;
• - Radial biasing a third clamping ring by spreading or narrowing and axially feed the unit until the third clamping ring radially or in an axially formed between the spacer ring and the other of the bearing rings annular groove or snaps;

Brief description of the drawings

The Invention will be described below with reference to embodiments explained in more detail.

1 shows a bearing unit, cut in a sectional view along the unit along the axis of rotation,

2 shows the detail X 1 , enlarged and not to scale,

3 shows the detail Z 1 , enlarged and not to scale,

4 shows the detail Z 1 , enlarged and not to scale, as an alternative to the design 3 .

5 shows how the biasing forces of any biasing ring, for example, the biasing ring after 1 and 2 , are decomposed on an annular surface of the spacer to one side and on another annular surface of a bearing ring to the other side in axial biasing force components, in a non-scale representation in accordance with 2 and in

6 are the most important steps of a method for mounting an embodiment of a storage unit shown.

Detailed description the drawing

5 :

5 shows how the preload forces 1 any clamping ring 2 , For example, the clamping ring 28 to 1 and 2 , on a ring surface 3 of the spacer 4 on the one hand and on another ring surface 5 a bearing ring 6 to the other side in axial preload components 7 be disassembled.

The spacer 4 Alternatively, it may be a bearing ring of another angular contact bearing of a bearing unit, not shown. Both the spacer 4 as well as the bearing ring 6 have a common axis of rotation 8th or 9 on.

It is only the mutually operatively connected end sections 14 and 15 The Rings 4 and 6 and simplified schematically illustrated. The end section 14 of the bearing ring 6 has a cylindrical surface 16 on, in the radial an annular groove 17 is introduced. The lateral surface 16 goes to the front 18 in the ring area 5 above. The end section 15 of the spacer 4 has a cylindrical surface 19 in which an annular groove 20 is introduced. The lateral surface 19 goes to the front 21 in the ring area 3 above. The end sections 14 and 15 are arranged partially radially concentric with each other.

The ring surfaces 3 and 5 limit an annular groove 10 and are described in this case respectively by the area of a truncated cone. alternative this could be the ring surfaces 3 and 5 also be described by concave or convex curved annular surfaces. The ring groove 10 is axial from the front side on the bearing ring 6 or at the spacer 4 trained annular surfaces 3 and 5 and in the radial direction through a lateral surface 19 of the spacer 4 limited. The ring groove 10 is formed only when mounting the spacer 4 under bearing ring 6 Partially inserted into each other at the end, so that they are arranged radially concentric with each other.

Each of the ring surfaces 3 and 5 is at an angle α or β to the axis of rotation 8th respectively 9 inclined, so that with the radially directed arrow 11 marked preload forces 1 of the clamping ring 2 as at oblique planes are also broken down into axial forces, those with the arrows 7 as axial force components 7 are designated.

The rotation axis 8th is then the axis of rotation of the rings 4 and 6 when the bearing ring 6 an outer ring and the spacer 4 Accordingly, a radially outer spacer is arranged. In this case, the clamping ring 2 radially outward from the axis of rotation 8th away against the ring surfaces 3 and 5 biased. The ring groove 17 is in this case from the outside in the outer surface 16 introduced and thus an outer groove. The ring groove 20 is thus in the inner lateral surface 19 introduced and an inner groove. The ring groove 10 is an inner groove, because the clamping ring 2 radially from the axis of rotation 8th gone to the outside in this is snapped.

The rotation axis 9 is then axis of rotation when the bearing ring 6 an inner ring and the spacer 4 Accordingly, a radially inwardly disposed spacer. In this case, the clamping ring 2 radially inward in the direction of the axis of rotation 9 against the ring surfaces 3 and 5 biased. Because the clamping ring 2 in the direction of the axis of rotation 9 in the ring groove 10 pretensioned, this is an outer groove. The ring groove 17 is from the inner lateral surface 11 introduced radially and thus an inner groove. Accordingly, the radially opposite annular groove 20 in this case one from the outside radially inwards into the lateral surface 19 introduced outer groove.

The cross section of the annular groove 10 is trapezoidal and by the variable axial dimension of the annular groove 10 as long as variable, until the unit is axially biased, that is until the clamping ring 2 between the ring surfaces 3 and 5 stuck so inhibited. The ring surfaces 3 and 5 are inclined towards each other. The distance between the ring surfaces 3 and 5 will go in the direction 11 radial prestressing of the clamping ring 2 less and increases in the opposite direction.

The clamping ring 2 is a slotted ring made of elastic material, such as spring steel, whose central axis of the axis of rotation 8th respectively 9 equivalent. In the illustration after 5 has the clamping ring 2 a rectangular cross-section, which may alternatively be designed trapezoidal, round or any other way. The clamping ring 2 is with one ring edge against the ring surfaces 3 and 5 biased.

The radial depth T _{10 of} the annular groove 10 is preferably at least as large or larger than the radial thickness H _{2 of} the clamping ring 2 so that this is completely radial in the annular groove 10 dips.

The Rings 2 and 4 are axially against the action of the biasing force components by means of abutments 12 and 13 in the ring grooves 17 and 20 supported on each other. These abutments 12 or 13 may alternatively to the illustrations after 5 Axial stops should be on axially directly supported bearing rings. The effective direction of the abutment 12 in the ring groove 20 is opposite to the effective direction of the abutment 13 in the ring groove 17 , At the abutments a circlip is supported 23 starting from one of the ring grooves 17 respectively. 20 in the other of the ring grooves 17 respectively. 20 across in both annular grooves 17 and 20 simultaneously immersed or engaged radially. The abutments 12 and 13 are flanks of the ring grooves 17 respectively. 20 , The circlip 23 is axial between the abutments 12 and 13 trapped.

The circlip 23 is a slotted ring of resilient material depending on the position of the axis of rotation radially outward or radially inward into one of the annular grooves 17 respectively 22 is snapped. In the event that the circlip 23 from the axis of rotation 8th snaps radially outwards, the radial depth T _{17 of} the annular groove 17 be at least as deep as the radial thickness H _{23 of} the locking ring 23 , When the end sections 14 and 15 axially connected and braced against each other, the retaining ring 23 initially against an elastic resistance as far as radially into the annular groove 17 be biased that the axial sliding over the lateral surface 19 as long as is unhindered until the annular groove 20 the ring groove 17 radially opposite and the circlip 23 radially up and partially in the annular groove 20 einfedert into it. In the event that the circlip 23 from the axis of rotation 9 away radially outward, must the radial depth T _{20 of} the annular groove 20 be at least as deep as the radial thickness H _{23 of} the locking ring 23 ,

The width of the ring grooves 17 and 20 should be about that of the circlip 23 correspond, that is, the axial clearance between the groove and engaging locking ring 23 should not be too big. The depth T _{10 of} the annular groove 10 , the radial length of the ring areas 3 and 5 and the angles α and β are from the axial clearance A between the circlip 23 and the respective wall in the annular groove 17 and 20 as well as the requirements for self-locking. The angles α and β are preferably 87 °.

1 :

1 shows a storage unit 24 with two tilt bearings 25 and 26 that with three clamping rings 27 . 28 and 29 self-preassembled and preloaded. The angular bearings 25 and 26 have a common outer ring 30 on. Each of the angular bearings 20 and 26 is a rolling bearing with rolling elements 31 to 34 in the form of balls. The outer raceways of the rolling elements 31 . 32 . 33 and 34 for both angular contact bearings 20 and 26 are on the common outer ring 30 educated. The diameter of the rolling elements 31 . 32 . 33 and 34 within a row to each other is the same, but the diameters differ from each other from row to row.

Each of the angular contact bearings has a bearing ring 35 respectively. 36 in the form of an inner ring. In addition, the storage unit 24 with a spacer 37 provided with the bearing rings 35 and 36 axially held at a distance and with the help of which they are biased against each other. These are the bearing rings 35 and 36 axially opposite each other and are against the rolling elements 31 to 34 prestressed.

2 :

How out 2 , an enlarged view of the detail X after 1 shows, the inner bearing ring 35 an outer annular groove 38 on. The outer ring groove 38 is an inner ring groove 39 on the spacer 37 across from. The clamping ring 27 sits proportionately in both annular grooves 38 and 39 , The radial dimension H ₂₇ of the rectangular in cross section clamping ring 27 is equal to or smaller than the radial depth of the annular groove 38 , so that the clamping ring for mounting the bearing ring 35 with the spacer 37 in the ring groove 38 dips elastically yielding, and then when the annular grooves 38 or 39 are aligned one above the other, in the other of the annular grooves 39 as long as this springs up against the ring surface 50 is biased.

The flanks of the ring groove 38 are ring surfaces 48 and 49 in the center perpendicular to the axis of rotation 8th ( 1 ) of the storage unit 24 are pierced. The parallel axial distance of the ring surfaces 48 and 49 each other corresponds to at least the width of the clamping ring 27 plus a movement play of the clamping ring 27 in the ring groove 38 ,

A flank of the annular groove 39 is a ring surface 50 in the form of the outer circumferential surface of a truncated cone. The cone angle β deviates by not less than 3 ° from 90 ° and is 87 °. The ring surface 50 axially opposite annular surface 51 is in this case one perpendicular to the axis of rotation 8th pierced annular surface. The width B of the annular groove 39 at the narrowest point corresponds at least to the width of the clamping ring 27 plus a maximum game to be compensated

If the bearing ring 35 end with the spacer 37 is plugged together, is between the frontal sections 40 and 41 and by an inner lateral surface 42 of the spacer 37 one around the axis of rotation 8th ( 1 ) circumferential annular groove 43 formed, which is variable in its axial dimension at least by the extent of the maximum game to be compensated S adjustable. In this ring groove 43 grips the clamping ring 28 one. In operation, the clamping ring dives 28 completely at least radially so far into the annular groove 43 one, this does not over the lateral surfaces 44 and 45 protrudes radially. The lateral surfaces 44 are seats 45 for a shaft, not shown.

The ring groove 43 is flank side by two ring surfaces 46 and 47 limited. The one of the ring surfaces 46 is the front of the section 40 on the bearing ring 35 educated. The other ring surface 47 is the front of the section 41 at the spacer 37 formed and axially with the bearing ring 36 coupled ( 1 ). The ring surfaces 46 and 47 Both are in the shape of the outer surface of a truncated cone and run at 3 ° to the radial plane inclined mirror images of each other. The ring surfaces 47 and 48 are made of steel and ground The clamping ring 28 is radial from the axis of rotation 8th directed away with circumferential edges 52 and 53 against the ring surfaces 46 and 47 biased and provides the axial distance in the annular groove 43 at most until after the clamping ring 27 between the ring surface 50 and 49 is axially clamped.

3 and 4 :

The 3 and 4 show detail Z 1 not to scale and enlarged. The inner bearing ring 36 encompasses the end of the spacer 37 , The around the axis of rotation 8th ( 1 ) circumferential annular grooves 54 and 55 lie radially opposite each other. The ring groove 54 is in the spacer 37 formed and has flank side annular surfaces 56 and 58 on, which are aligned parallel to each other and in their center from the axis of rotation 8th are pierced. The ring groove 55 is in the bearing ring 36 introduced and has at least one annular surface 57 on in the form of an outer circumferential surface of a truncated cone with the cone angle γ on.

3 - The spacer 37 and the inner bearing ring 36 are in the with 3 dargestell Example axially around the gap S opposite each other. The gap S is at least as large as an axial clearance to be compensated in the arrangement. The clamping ring 29 is so far in the annular groove 55 immersed, as for play-free adjustment of the bearing assembly 24 is necessary and while on the ring surface 57 against radial movements to the axis of rotation 8th inhibited. Magnifications of the game in the tilt bearings 25 and 26 be compensated by the radially outwardly biased clamping ring 29 further elastic from the axis of rotation 8th sprung away.

4 - The spacer 37 and the inner bearing ring are axially with little axial bias, for example, without gap axially on block. The clamping ring 29 is in the ring groove 55 with the edge 56 on the ring surface 57 inhibited against radial movement and axially between the annular surfaces 58 and 57 as long as clamped until the elastic preload on block decreases in operation so far that the clamping ring 29 elastic springs and compensates for the resulting play. In the example below 4 is by means of the clamping ring 29 secured the location on block.

6 :

• a. Radiales Aufspreizendes Spannrings 29 und Einschnappen in die Ringnut 54, die in einem Endstück eines Distanzstücks 37 ausgebildet ist;
• b. Radiales Vorspannen des Spannrings 29, indem mit dem innere Lagerring 36 zunächst mit einer endseitigen Fase am Lagerring 36 und dann mit dem Innenumfang des Lagerrings 36 bis dieser in die Ringnut 54 in dem Endstück zumindest teilweise radial eintaucht; dabei einen Endabschnitt des Lagerringes 36 von einem der Schräglager 26 und das Endstück solange axial ineinander schieben, bis der Spannring 29 in eine Ringnut 55 des Endabschnitts radial einschnappt (4), und mindestens solange bis das Distanzstück 37 sowie der Lagerring 36 wie in 4 beschrieben axial stirnseitig aneinander anschlagen;
• c. Radiales Aufspreizen des Spannrings 27 und Einschnappen in eine Ringnut 38 an einem weiteren Endabschnitt in einem weiteren Lagering 35 des Schräglagers 25;
• d. Axiales Einschieben des einen mit Wälzkörpern 33 und 34 vormontierten inneren Lagerringes 36 in den für beide Schräglager 25 und 26 gemeinsamen äußeren Lagerring 30 und zeitgleich oder zeitversetztes axiales Ineinanderschieben des anderen mit Wälzkörpern 31 und 32 vormontierten inneren Lagerrings 35 in den gemeinsamen Lagerring 30;
• e. Axiales Aufschieben eines weiteren Endstücks des Distanzstücks 37 und des anderen Endabschnitts auf den Lagerring 35 und dabei radiales Vorspannen des Spannringes 27 in die Ringnut 38 solange bis der zweiten Spannring 27 in eine Ringnut 39 des anderen Endstücks am Distanzstück 37 einschnappt (2);
• f. Radiales und umfangsseitiges Einengen eines Spannrings 28 und axial durch einen der Lageringe 35 oder 36 hindurchführen, bis der dritte Spannring 28 radial in eine axial zwischen dem Distanzring 37 und dem anderen der Lagerringe 36 ausgebildete Ringnut 43 einschnappt (2);

In 6 are with a.) to f.) Steps of a method for mounting the bearing unit 24 shown.

• a. Radial expanding clamping ring 29 and snapping into the annular groove 54 which is in an end piece of a spacer 37 is trained;
• b. Radial pretensioning of the clamping ring 29 by using the inner bearing ring 36 initially with an end chamfer on the bearing ring 36 and then with the inner circumference of the bearing ring 36 until this in the annular groove 54 immersed in the end piece at least partially radially; while an end portion of the bearing ring 36 from one of the angular bearings 26 and axially push the tail into each other until the clamping ring 29 in an annular groove 55 the end section snaps radially ( 4 ), and at least until the spacer 37 as well as the bearing ring 36 as in 4 described axially abut each other frontally;
• c. Radial spreading of the clamping ring 27 and snapping into an annular groove 38 at a further end portion in another storage ring 35 of the inclined bearing 25 ;
• d. Axial insertion of the one with rolling elements 33 and 34 pre-assembled inner bearing ring 36 in the for both angular bearings 25 and 26 common outer bearing ring 30 and at the same time or time-shifted axial telescoping of the other with rolling elements 31 and 32 pre-assembled inner bearing ring 35 in the common bearing ring 30 ;
• e. Axial pushing on of another end piece of the spacer 37 and the other end portion on the bearing ring 35 while doing radial biasing of the clamping ring 27 in the ring groove 38 until the second clamping ring 27 in an annular groove 39 the other end piece on the spacer 37 snaps ( 2 );
• f. Radial and circumferential narrowing of a clamping ring 28 and axially by one of the bearing rings 35 or 36 pass it through until the third clamping ring 28 radially in an axial between the spacer ring 37 and the other of the bearing rings 36 trained annular groove 43 snaps ( 2 );

1

preload force

2

clamping ring

3

ring surface

4

spacer

5

ring surface

6

bearing ring

7

arrow

8th

axis of rotation

9

axis of rotation

10

ring groove

11

arrow

12

abutment

13

abutment

14

end

15

end

16

lateral surface

17

ring groove

18

front

19

lateral surface

20

ring groove

21

front

22

Not forgive

23

circlip

24

storage unit

25

angular contact bearings

26

angular contact bearings

27

clamping ring

28

clamping ring

29

clamping ring

30

outer bearing ring

31

rolling elements

32

rolling elements

33

rolling elements

34

rolling elements

35

bearing ring

36

bearing ring

37

spacer

38

ring groove

39

ring groove

40

frontal section

41

frontal section

42

lateral surface

43

ring groove

44

lateral surface

45

lateral surface

46

ring surface

47

ring surface

48

ring surface

49

ring surface

50

ring surface

51

ring surface

52

edge

53

edge

54

ring groove

55

ring groove

56

ring surface

57

ring surface

58

ring surface

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

• - US 1908474 [0007, 0008, 0010]

Claims (18)

Storage unit ( 24 ) with two backlash-free inclined bearings ( 25 . 26 ), whereby the angular contact bearings ( 25 . 26 ) at least from bearing rings ( 35 . 36 ) and rolling elements ( 31 . 32 . 33 . 34 ) are formed, in which - an elastic clamping ring ( 27 . 28 . 29 ) with its own radial prestress against an annular surface ( 3 . 5 . 46 . 47 . 50 . 57 ), which is connected to one of the bearing rings ( 35 . 36 ) is at least axially coupled, - the clamping ring ( 27 . 28 . 29 ) in a radial direction against the annular surface ( 3 . 5 . 46 . 47 . 50 . 57 ), while the radial bias of the clamping ring ( 27 . 28 . 29 ) on the ring surface ( 3 . 5 . 46 . 47 . 50 . 57 ) can be dismantled in axial prestressing force components, - the bearing rings ( 35 . 36 ) and rolling elements ( 31 . 32 . 33 . 34 ) biased against each other by means of the biasing force components in the bearing unit ( 24 ) are secured by self-holding, characterized in that the clamping ring ( 27 . 28 . 29 ) on the ring surface ( 3 . 5 . 46 . 47 . 50 . 57 ) is inhibited against movements in a second radial direction, the second radial direction being opposite to the first radial direction. ( 1 . 2 . 3 . 4 . 5 ) Bearing unit according to claim 1, characterized in that the annular surface ( 3 . 5 . 46 . 47 . 50 . 57 ) is formed geometrically as the lateral surface of a truncated cone whose axis of symmetry with the axis of rotation ( 8th . 9 ) of the storage unit ( 24 ) is identical. Bearing unit according to claim 2, characterized in that the cone angle (α, β, γ) with which the annular surface ( 3 . 5 . 46 . 47 . 50 . 57 ) to the rotation axis ( 8th . 9 ) is inclined by not less than 3 ° from the right angle. ( 2 . 3 . 4 . 5 ) Bearing unit according to claim 1, characterized in that the clamping ring ( 28 ) only with one body edge ( 52 . 53 ) against the annular surface ( 46 . 47 ) is biased. ( 2 ) Bearing unit according to claim 1, characterized in that the clamping ring ( 27 . 28 . 29 ) in any longitudinal sections along the axis of rotation ( 8th . 9 ) has rectangular shaped profile. ( 1 . 2 . 3 . 4 . 5 ) Bearing unit according to claim 1, characterized in that the annular surface ( 3 . 5 . 46 . 47 . 50 . 57 ) in one around the rotation axis ( 8th ) circumferential annular groove ( 10 . 45 . 55 ) is trained. ( 1 . 2 . 3 . 4 . 5 ) Bearing unit according to claim 6, characterized in that the annular groove ( 10 . 43 ) flank side in each axial direction through such an annular surface ( 3 . 5 . 46 . 47 ) is limited, wherein the ring surfaces ( 3 . 5 . 46 . 47 ) are mirror images of each other and that the axial distance between the annular surfaces ( 3 . 5 . 46 . 47 ) is variable, wherein the clamping ring ( 2 . 28 ) is biased radially against both annular surfaces. ( 2 and 5 ) Bearing unit according to claim 7, characterized in that the bearing rings by means of a spacer ( 4 . 37 ) are held axially at a distance and that such an annular surface ( 3 . 46 ) on one of the bearing rings ( 6 . 35 ) and another such annular surfaces ( 5 . 47 ) on the spacer ( 4 . 37 ) is trained. ( 1 . 2 . 3 . 4 and 5 ) Bearing unit according to claim 6, characterized in that the annular groove ( 39 . 55 ) axially flank side in a direction through a first annular surface ( 50 . 57 ) is limited, which is geometrically formed as the lateral surface of a truncated cone and in the other direction by a second annular surface ( 51 ) is limited, which is a pierced in the center and perpendicular from the axis of rotation annular surface and wherein the clamping ring ( 29 ) and the annular surface are non-contact with each other. ( 2 . 3 and 4 ) Bearing unit according to claim 1, characterized in that the clamping ring ( 27 . 29 ) axially between a first annular surface ( 50 . 57 ) in an annular groove ( 39 . 55 ) and a second annular surface ( 49 . 58 ) in a further annular groove ( 38 . 54 ) is clamped, of which at least the first annular surface ( 50 . 57 ) has the geometry of the lateral surface of a truncated cone. ( 2 . 3 . 4 ) Bearing unit according to claim 10, characterized in that at least the second annular surface ( 49 . 58 ) one in the center perpendicular to the axis of rotation ( 8th ) pierced annular surface is. ( 2 . 3 and 4 ) Bearing unit according to claim 10, characterized in that the annular grooves ( 38 . 39 . 54 . 55 ) lie radially at least partially opposite. ( 2 . 3 . 4 ) Bearing unit according to claim 10, characterized in that the bearing rings ( 35 . 36 ) by means of a spacer ( 37 ) are held axially at a distance and that first annular surface ( 57 ) on one of the bearing rings ( 36 ) and the second ring surface ( 58 ) on the spacer ring ( 37 ) is trained. ( 3 and 4 ) Bearing unit according to claim 13, characterized in that the first annular surface ( 50 ) in a first annular groove ( 39 ) on the spacer ( 37 ) and the second ring surface ( 49 ) in a second annular groove ( 38 ) on one of the bearing rings ( 35 ), wherein the annular grooves ( 38 . 39 ) are at least partially opposite each other radially and thereby the clamping ring ( 27 ) engages radially in both of the annular grooves. ( 2 ) Bearing unit according to claim 13, characterized in that the first annular surface ( 57 ) in a first annular groove ( 55 ) on one of the bearing rings ( 36 ) and the second ring surface ( 58 ) in a second annular groove ( 54 ) on the spacer ( 37 ) is formed, wherein the annular grooves ( 54 . 55 ) are at least partially opposite each other radially and thereby the clamping ring ( 29 ) in both of the annular grooves ( 54 . 55 ) engages radially. ( 3 and 4 ) Bearing unit according to claim 1, 6, 7, 10 or 12, characterized in that the bearing rings ( 35 . 36 ) by means of a spacer ( 37 ) are held axially at a distance and that the bearing unit ( 24 ) by means of at least one operative connection between the spacer ( 37 ) and at least one clamping ring ( 27 . 28 . 29 ) is held in itself. ( 1 . 2 . 3 . 4 . 5 ) Bearing unit according to claim 1, 6, 7, 10 or 12, characterized in that the bearing rings ( 35 . 36 ) by means of a spacer ( 37 ) are held axially at a distance and that the angular contact bearings ( 25 . 26 ) by means of at least one operative connection between the spacer ( 37 ) and at least one clamping ring ( 27 . 28 . 29 ) are biased against each other. ( 1 . 2 . 3 . 4 . 5 ) Method for mounting a storage unit ( 24 ) according to claim 1, characterized by at least the following steps: a. Radial pretensioning of a first clamping ring ( 29 ) and snapping the clamping ring ( 29 ) in an annular groove ( 54 ) in an end piece of a spacer ( 37 ); b. Radial pretensioning of the first clamping ring ( 29 ) until this in the annular groove ( 54 ) immersed at least partially radially, while an end portion of a bearing ring ( 36 ) of one of the angular contact bearings ( 25 . 26 ) and axially push the tail into each other until the clamping ring ( 29 ) in an annular groove ( 55 ) of the end portion radially locks, and at least until the spacer ( 37 ) as well as the bearing ring ( 36 ) abut each other axially on the end face; c. Radial pretensioning of a second clamping ring ( 27 ) and engaging in an annular groove ( 38 ) at a further end section in a further storage ring ( 35 ) of another of the angular contact bearings ( 25 . 26 ); d. Axial telescoping of one with rolling elements ( 33 . 34 ) pre-assembled bearing ring ( 36 ) and one for both angular contact bearings ( 25 . 26 ) common bearing ring ( 30 ) and simultaneous or time-delayed axial telescoping of the other with rolling elements ( 31 ) pre-assembled bearing ring ( 35 ) in the common bearing ring ( 30 ); e. Axial telescoping another end piece of the spacer ( 37 ) and the other end section on the other bearing ring ( 35 ) while radially biasing the second clamping ring ( 27 ) in the annular groove ( 38 ) until the second clamping ring ( 27 ) in an annular groove ( 39 ) of the other end piece on the spacer ( 37 ) locks; f. Radial pretensioning of a third clamping ring ( 28 ) and axially feed the unit until the third clamping ring ( 28 ) radially in an axially between the spacer ring ( 37 ) and the other of the bearing rings ( 35 ) formed annular groove ( 43 ) locks; ( 6 )