Wave spring for a shaft bearing assembly, housing for a shaft bearing assembly, shaft bearing assembly, machine and motor vehicle

Abstract

The invention relates to a wave spring (1) for a shaft bearing assembly (2), wherein the wave spring (1) comprises a coil arrangement (5) with a complete helical coil (5a) made of a spring material strip (6) and an axially outwardly extending end leg (7, 7a, 7b) which is formed integrally with the coil arrangement (5) and deviates from the helical shape of the coil arrangement (5) in that the end leg (7, 7a) extends radially outward in a spiral shape, or in that the end leg (7, 7b) extends radially inward in a spiral shape. In the shaft bearing assembly (2), the wave spring (1) sits in a wave spring seat (13) of a housing (3) of the shaft bearing assembly (2) and is axially secured by clamping the end leg (7) against an end leg contact surface (13a). The invention further relates to said housing (3), a machine comprising the shaft bearing assembly (2), and a motor vehicle comprising the machine (4).

Description

[0001] The present invention relates to a wave spring for a shaft bearing assembly. Furthermore, the invention relates to a housing for a shaft bearing assembly. Furthermore, the invention relates to a shaft bearing assembly comprising the wave spring and the housing. The invention also includes a machine, in particular an electric machine, and a motor vehicle.

[0002] A conventional shaft bearing assembly comprises a bearing arranged in a bearing seat of a housing of the shaft bearing assembly, by means of which a shaft is supported. The bearing is, for example, a rolling bearing designed as a radial bearing, which has an inner bearing ring and an outer bearing ring, with rolling elements (such as balls, needles, cylinders, etc.) guided between the bearing rings. The inner bearing ring encloses an outer peripheral surface of the supported shaft, and the bearing is seated in the bearing seat of the housing via the outer bearing ring, so that the shaft is supported on the housing by means of the radial bearing. To ensure the longest possible service life of the rolling bearing and consequently of the shaft bearing assembly, there is a need to prevent unwanted movement of the inner bearing ring in relation to the shaft and unwanted movement of the outer bearing ring in relation to the housing.Such movement is known as creep, which can lead to material abrasion, resulting in rust and material buildup between the bearing seat and the bearing outer ring. This can cause the bearing to seize and ultimately lead to failure of the affected shaft bearing assembly.

[0003] From the prior art - from DE 10 2019 214 673 A1 or WO 2023 062 145 A1 - it is known to clamp the corresponding radial bearing using a conventional wave spring. However, when assembling the conventional shaft bearing assembly or a machine having such a shaft bearing assembly, the wave spring must be held in position between the housing and the bearing seat or the bearing. However, such positioning is currently not feasible for all housing geometries and / or assembly types, or at least involves considerable effort. One example is the joining of a permanent magnet-excited rotor into a stator with simultaneous bearing cover joining. The loose wave spring is magnetically attracted by the permanent magnets of the rotor to be joined and must therefore be laboriously held in an assembly position. There is also a risk that the wave spring will fall out of its assembly position when handling the parts to be joined.

[0004] The object of the present invention is to provide a solution to enable a wave spring to be mounted as simply as possible without impairing the function of the wave spring.

[0005] This problem is solved by the subject matter of the independent claims. Further possible embodiments of the invention are disclosed in the subclaims, the description, and the figures. Features, advantages, and possible embodiments presented in the description for one of the subject matter of the independent claims are to be regarded, across categories and embodiments, at least analogously as features, advantages, and possible embodiments of the respective subject matter of the other independent claims, as well as any possible combination of the subject matter of the independent claims, optionally in conjunction with one or more of the subclaims.

[0006] According to the invention, a wave spring and a housing for a shaft bearing arrangement are proposed. The wave spring and the housing each form a component of a shaft bearing arrangement according to the invention. According to the invention, a machine having the shaft arrangement, i.e. the housing and the wave spring, and a motor vehicle having the machine are also proposed. When the machine is installed as intended, it forms a component of the motor vehicle, which is in particular a purely or hybrid electrically driven motor vehicle. The machine is, for example, an electrical machine, i.e. an electromechanical energy converter. For example, the machine is designed as a traction machine for the motor vehicle or of the motor vehicle.

[0007] The wave spring has a coil arrangement that has one complete helical coil or more complete helical coils. A complete coil is defined as a coil that runs through 360°. In particular, the wave spring can have a partially helical coil, i.e., a coil that runs through less than 360°. The coil or coils of the coil arrangement are formed from a flat spring material strip, for example, from spring steel. The spring material strip is corrugated along the coil or coils. The helical shape of the coils or coil arrangement has a constant radius. This applies to both the inner and outer radius of the coil arrangement, since the spring material strip is always the same width along its longitudinal extent or along its neutral axis. The shape of the wave spring is clearly shown by Fig. 3. The wave spring further comprises an axially outer end leg which is formed integrally with the winding arrangement and deviates from the helical shape of the winding arrangement in that the end leg runs spirally radially inwards or spirally radially outwards. In other words, the end leg branches off from the helical shape of the winding arrangement, for example at a branching point. Starting from this branching point, the end leg has an increasing radius with increasing distance from the branching point along its longitudinal extent if the end leg runs spirally outwards, or a decreasing radius if the end leg runs spirally inwards. A distal end of the end leg therefore has a different, i.e. a larger or smaller, inner and outer radius than the winding arrangement.In particular, the outer radius of the end leg at the distal end is larger than the outer radius of the winding arrangement by the width of the spring material strip if the end leg extends spirally radially outward. In the case where the end leg extends spirally radially inward, it is particularly provided that the inner radius of the end leg at the distal end is smaller than the inner radius of the winding arrangement by the width of the spring material strip.

[0008] The end leg, which deviates from the helical shape, acts as a securing element of the wave spring, securing the entire wave spring against unwanted axial movement, while limiting neither the spring action nor the axial spring travel of the wave spring. This is because the entire wave spring terminates at the end leg, meaning that no further element of the wave spring is connected axially to the distal end of the end leg that could influence the spring action or spring travel. In the intended installation position, the wave spring is supported directly on a counterbearing, for example, on a housing wall, via the end leg.

[0009] The housing for the shaft bearing assembly has a bearing seat for a radial bearing and a wave spring seat for the wave spring. The wave spring seat has an end leg contact surface to which the end leg is clamped when the wave spring is seated in the wave spring seat as intended, thereby axially securing the wave spring. If the end leg extends spirally radially inward, it is clamped on a radially inner narrow side of the spring material strip to the end leg contact surface, which in this case points radially outward, so that a force or frictional connection is created between the end leg and the end leg contact surface, by means of which the wave spring is axially held.If, however, the end leg extends radially outward, it is clamped on a radially outer narrow side of the spring material strip to the end leg contact surface, which in this case faces radially inward, so that a force or frictional connection is established between the end leg and the end leg contact surface, by means of which the wave spring is held axially. Thus, for the shaft bearing assembly, which comprises the wave spring and the housing, the wave spring sits in the wave spring seat and is axially secured by force-fitting, with the end leg clamped to the end leg contact surface. This is advantageous in that the end leg contact surface is particularly easy to manufacture.

[0010] Thanks to the locking device, an assembly of the shaft bearing arrangement or the machine containing the wave spring can be easily handled without the wave spring falling out of its wave spring seat. Furthermore, it is ensured that the wave spring remains in the wave spring seat, even if a force is exerted on the wave spring during assembly of the shaft bearing arrangement or the machine, for example, a force from a magnetic component of the shaft bearing arrangement or the machine. Thus, when assembling an electrical machine, a permanent magnet rotor with a pre-mounted radial bearing can be easily and inexpensively inserted into the associated stator without the wave spring being undesirably disengaged from the wave spring seat by the magnetic force emanating from the rotor.

[0011] In another possible embodiment of the housing, the wave spring seat has an axial locking groove designed such that - when the wave spring is seated in the wave spring seat as intended - the end leg engages in the axial locking groove and is thereby axially secured with a positive fit. Thus, for the shaft bearing arrangement comprising the wave spring and the housing, the wave spring sits in the wave spring seat and is axially secured with a positive fit by the end leg engaging in the axial locking groove of the housing. In this way, the wave spring is even more reliably secured against axial movement and against falling out of the wave spring seat. It is conceivable for the wave spring to be axially secured in the wave spring seat with both a non-positive and a positive fit. In such a case, a groove bottom of the axial locking groove acts as the end leg contact surface.

[0012] The assembly of the shaft bearing arrangement or the machine is particularly simple if - as provided in a possible further development of the housing - the wave spring seat has an introduction chamfer which is designed in such a way that when the wave spring is moved axially towards the wave spring seat, the end leg is radially tensioned. During assembly, the end leg initially comes into contact with a conical portion of the introduction chamfer when the wave spring is moved axially towards the wave spring seat. As the wave spring is moved further axially, the end leg is tensioned radially towards the helical winding arrangement by an inner or outer peripheral edge (depending on whether the end leg runs spirally radially inwards or spirally radially outwards) sliding on the conical portion of the introduction chamfer.As soon as the end leg is fully seated against a cylindrical portion of the lead-in chamfer, the axially securing force connection for the wave spring is formed; this is because the cylindrical portion can form the end leg contact surface, or the cylindrical portion has the end leg contact surface. In particular, the axial locking groove directly adjoins the conical portion or the cylindrical portion of the lead-in chamfer, with the end leg relaxing after the conical portion or the cylindrical portion by engaging the axial locking groove. In this relaxed state, the end leg engages positively in the axial locking groove, from which the end leg can only be removed if it is radially tightened again.

[0013] In a further possible embodiment, the wave spring seat has a disassembly chamfer which is designed such that upon axial movement of the wave spring out of its wave spring seat, the end leg is radially tensioned, whereby the end leg is disengaged from the axial securing groove. A conical portion of the disassembly chamfer rises in the opposite direction to the conical portion of the insertion chamfer. During disassembly of the wave spring, the end leg initially comes into contact with the conical portion of the disassembly chamfer when the wave spring is moved axially against the assembly direction, i.e. in the direction away from the wave spring seat. With further axial movement of the wave spring, the end leg is radially tensioned in the direction of the helical winding arrangement by the inner or outer peripheral edge (depending on whether the end leg runs spirally radially inwards or spirally radially outwards) sliding on the conical portion of the disassembly chamfer.This disengages the end leg from the axial locking groove, allowing further axial movement for disassembly. Thanks to the disassembly chamfer, the wave spring can be removed from its wave spring seat particularly easily and with minimal effort if necessary.

[0014] The shaft bearing assembly comprises, in particular, a radial bearing, which is connected to the bearing seat via its outer bearing ring. An inner bearing ring of the radial bearing sits on an outer circumferential or lateral surface of a shaft, which is supported by the shaft bearing assembly. Once the shaft bearing assembly has been assembled as intended, the wave spring is axially clamped between the radial bearing and the housing. The wave spring is clamped, for example, between the bearing outer ring and the housing; such a configuration is chosen when high speed gradients are to be expected during intended use of the shaft bearing assembly, for example, rapid speed changes of ten thousand or more revolutions per minute. If the shaft bearing assembly is designed for lower expected speed gradients, the wave spring can be clamped between the bearing inner ring and the housing.Due to its tensioned state in the intended installation position, the wave spring exerts a spring force on the radial bearing in the axial direction, pressing it against a shaft shoulder on the shaft. The radial bearing and the wave spring are therefore arranged between the housing and the shaft shoulder.

[0015] According to a further possible embodiment of the wave spring, the end leg extends from its branching point, at which it deviates for the first time from the helical shape of the winding arrangement when viewed in the circumferential direction, over less than 360°, in particular less than 180°, in particular over a maximum of 135°. In other words: the end leg forms less than one complete spiral turn, wherein the distal end of the end leg and the branching point, with a center point of the winding arrangement as the apex, enclose an angle of less than 360°, in particular less than 180°, in particular a maximum of 135°. This makes the wave spring particularly compact and material-efficient. This is because it dispenses with unnecessary spiral turns that would sit in the axial securing groove and contribute nothing to the spring effect of the wave spring.

[0016] To further simplify disassembly of the wave spring, a further possible embodiment of the wave spring provides for a tool engagement structure to be formed on its end leg for clamping the end leg. This can, for example, be an opening penetrating the end leg that corresponds to a pin or the like of a tool. The tool engagement structure here does not simply refer to the spring material strip itself or its shape. Instead, the tool engagement structure is specifically formed during the manufacture of the wave spring, for example, by means of a corresponding, in particular, machining process.

[0017] If the end leg extends spirally outward, another possible embodiment of the wave spring provides for the end leg to have an end leg extension that extends radially inward. This allows the end leg to be tensioned particularly easily toward the coil arrangement by grasping the end leg extension through the material-free interior of the wave spring and tensioning it inward. This makes both installation and removal of the wave spring particularly easy.

[0018] A possible refinement in this context provides for the tool engagement structure to be located on the end leg extension, particularly at its inward-facing end. This makes the tool engagement structure particularly easy to reach with the appropriate tool, which further significantly simplifies the installation and removal of the wave spring.

[0019] Further features of the invention may emerge from the claims, the figures, and the description of the figures. The features and combinations of features mentioned above in the description, as well as the features and combinations of features shown below in the description of the figures and / or in the figures alone, can be used not only in the respective combinations specified, but also in other combinations or on their own, without departing from the scope of the invention.

[0020] The drawing shows Fig. 1 is a schematic view of a wave spring along the axial direction, the wave spring having a helical winding arrangement and an end leg which extends spirally radially outwards, Fig. 2 a schematic view of the wave spring along the axial direction, with the end leg of the wave spring extending spirally radially inwards, Fig. 3 a schematic view of the wave spring in side view, Fig. 4 is a partial and sectional view of a shaft bearing arrangement showing the Fig. 1 shown wave spring, and Fig. 5 is a partial and sectional view of a shaft bearing arrangement showing the Fig. 2 has a wave spring.

[0021] The following describes a wave spring 1 for a shaft bearing assembly 2, a housing 3 for the shaft bearing assembly 2, a machine 4 having the shaft bearing assembly 2, and a motor vehicle 4 having the machine (not shown in the figures). In the figures, identical and functionally equivalent elements are provided with the same reference numerals.

[0022] The shaft bearing arrangement 2 (first used in Fig. 4) has the Fig. 1-3 schematically shown wave spring 1 and the housing 3 and forms in turn a component of the machine 4, which in the Fig. 4 and Fig. 5 is only partially or partially shown. In this example, the machine 4 is an electromechanical energy converter, i.e., an electric machine. The electric machine forms a component of the motor vehicle, with the machine 4, according to the example described here, being designed as an electric traction machine of the motor vehicle. Consequently, the motor vehicle is a purely or hybrid electric motor vehicle.

[0023] The wave spring 1 has a winding arrangement 5 having one complete helical winding 5a or more complete helical windings 5a. As shown in Fig. As shown in Figure 3, the wave spring 1 can have a partially helical winding 5b. The windings 5a, 5b of the winding arrangement 5 are formed from a flat spring material strip 6, the material of which is spring steel in this case. Along the windings 5a, 5b, the spring material strip 6 is corrugated, as shown in Figure 3. Fig. 3. The helical shape of the windings 5a, 5b or the winding arrangement 5 has a constant outer radius r Wa and a constant inner radius r Wi , since the spring material strip 6 has a constant width b along its longitudinal extent or along its neutral fiber. The wave spring 1 further has an axially outer end leg 7, which is formed integrally with the winding arrangement 5, i.e. consists of the spring material strip 6. As can be seen from the Fig. 1, Fig. 2, Fig. 4 and Fig. 5, the end leg 7 branches off spirally from the helical shape of the winding arrangement 5 at a branching point 8, whereby the end leg 7 spirals outwards radially (see Fig. 1; end leg 7a) or spirally radially inwards (see Fig. 2; end leg 7b). In this case, the end leg extends over less than 360°, in particular less than 180°, in particular over a maximum of 135°, so that the end leg does not form a complete, 360° sweeping spiral turn. With increasing distance from the branching point 8, an outer radius r Ea and an inner radius r Ei of the end leg 7a along its longitudinal extent, since the end leg 7a extends spirally outwards. The outer radius r Ea of the end leg 7a is therefore larger at its distal end 7c than the outer radius r Waof the winding arrangement 5, in this example by the width b of the spring material strip 6. In contrast, the outer radius r Ea and the inner radius r Ei of the end leg 7b along its longitudinal extent, since the end leg 7b extends spirally inwards. The inner radius r Ei of the end leg 7b is therefore smaller at its distal end 7c than the inner radius r Wi the winding arrangement 5, in the present example smaller by the width b of the spring material strip 6.

[0024] Out of Fig. 1 further shows that a tool engagement structure 9 for clamping the end leg 7 is formed on the end leg 7—that is, on the end leg 7a running spirally outward or on the end leg 7b running spirally inward. Two or more tool engagement structures 9 are conceivable, which may be of the same or different design. The tool engagement structure 9 is arranged in particular on the distal end 7c of the respective end leg 7. If the end leg 7 runs radially outward, that is, here at the end leg 7a, the end leg 7a has an end leg extension 10 that extends radially inward. The tool engagement structure 9 or one of the tool engagement structures 9 can be arranged on the end leg extension 10. As can be seen from Fig. 1, in the present example, it is provided that one of the tool engagement structures 9 is arranged at a radially inwardly pointing end 10a of the end leg extension 10.

[0025] Fig. 4 and Fig. 5 each show a partial and sectional view of the shaft bearing assembly 2, which is part of the machine 4. The shaft bearing assembly 2 comprises the housing 3, which has a bearing seat 11 for a radial bearing 12 and a wave spring seat 13 for the wave spring 1. If the wave spring 1 is arranged in its intended installation position, i.e. in the shaft bearing assembly 2 or in an assembly for producing the shaft bearing assembly 2, the end leg 7 is clamped against an end leg contact surface 13a of the wave spring seat 13. This creates a force or tight fit between the end leg 7 and the housing 3 or the wave spring seat 13, by means of which the wave spring 1 is axially secured in a force-fitting manner. In the case of the end leg 7a - that is, if the end leg 7 is designed such that it branches out radially outwards from the branch point 8 of the helical winding arrangement 5 (see Fig. 4) - the end leg 7a is clamped on a radially outer narrow side 6a of the spring material strip 6 to the end leg contact surface 13a, which in this case points radially inward, so that the force or frictional connection is mediated between the end leg 7a and the end leg contact surface 13a, by means of which the wave spring 1 is held axially. If, on the other hand, the end leg 7 is designed such that it branches off radially inward from the helical winding arrangement 5 at the branching point 8 - i.e. at the end leg 7b (see Fig. 5) - the end leg 7b is clamped on a radially inner narrow side 6b of the spring material strip 6 to the end leg contact surface 13a, which in this case points radially outwards, so that the force or frictional connection is mediated between the end leg 7b and the end leg contact surface 13a, by means of which the wave spring 1 is held axially.

[0026] Out of Fig. 4 and out Fig. 5 further shows that the wave spring seat 13 has an axial locking groove 14, into which the end leg 7 engages, so that the wave spring 1 is axially secured in a form-fitting manner. In the present example, the wave spring 1 is thus axially secured in a force-fitting and form-fitting manner. A groove bottom of the axial locking groove 14 functions here as the end leg contact surface 13a. Furthermore, in Fig. 4 and Fig. 5 that the wave spring seat 13 has an insertion chamfer 15 for easy assembly or mounting of the shaft bearing arrangement 2, which is designed such that upon axial movement of the wave spring 1 in the direction of the wave spring seat 13, the end leg 7 is radially tensioned. By the end leg 7a ( Fig. 4) or 7b ( Fig. 5) is moved toward the wave spring seat 13, an outer peripheral edge of the end leg 7a or an inner peripheral edge of the end leg 7b slides along a conical portion 15a of the insertion bevel 15, whereby the end leg 7a is tensioned radially inward or the end leg 7b is tensioned radially outward. As soon as the end leg 7 reaches the axial securing groove 14, it engages therein, whereby the end leg 7 is released, so that a positive connection is created between the wave spring seat 13 and the wave spring 1, whereby the wave spring 1 is positively secured to the housing 3 via its end leg 7.

[0027] According to the present example, the wave spring seat 13 also has a disassembly chamfer 16, which is designed such that upon axial movement of the properly mounted wave spring 1 out of its wave spring seat 13, the end leg 7 is radially tensioned, whereby the end leg 7 is disengaged from the axial securing groove 14. A conical portion 16a of the disassembly chamfer 16 rises opposite to the conical portion 15a of the insertion chamfer 15, which in Fig. 4 and Fig. 5 can be clearly seen. When the wave spring 1 is moved axially in the opposite direction of assembly, i.e. out of the wave spring seat 13, the end leg 7a ( Fig. 4) or 7b ( Fig. 5) initially comes into contact with the conical portion 16a of the disassembly chamfer 16. With further axial movement of the wave spring 1, the end leg 7a is tensioned radially inward or the end leg 7b is tensioned radially outward, as the outer peripheral edge of the end leg 7a or the inner peripheral edge of the end leg 7b slides on the conical portion 16b of the disassembly chamfer 16.

[0028] Out of Fig. 4 and Fig.5 further shows that the shaft bearing assembly 2 comprises the radial bearing 12, which is seated in the bearing seat 11 via its bearing outer ring 12a. An inner bearing ring 12b of the radial bearing 12 sits on an outer circumferential or circumferential surface 17a of a shaft 17, which is supported by the shaft bearing assembly 2. Once the shaft bearing assembly 2 has been assembled as intended, the wave spring 1 is clamped between the bearing outer ring 12a and the housing 3. In the intended installation position, the wave spring 1 exerts a spring force on the radial bearing 12 in the axial direction, whereby it is pressed on the shaft 17 against its shaft shoulder 17b. The radial bearing 12 and the wave spring 1 are thus arranged between the housing 3 and the shaft shoulder 17b. List of reference symbols 1 wave spring 2 Shaft bearing arrangement 3 housings 4 machine 5 Winding arrangement 5a complete turn 5b partial winding 6 spring material band 6a radially outer narrow side of the spring material strip 6b radially inner narrow side of the spring material strip 7 end legs 7a radially inwardly extending end leg 7b radially outwardly extending end leg 7c distal end of the terminal limb 8 Junction 9 Tool attack structure 10 distal femoral process 10a End of the distal femoral process 11 Bearing seat 12 radial bearings 12a Bearing outer ring 12b Bearing inner ring 13 Wave spring seat 14 Axial locking groove 15 Insertion chamfer 15a Cone share 16 Disassembly phase 16a cone portion 17 Wave 17a Outer peripheral surface 17b Wave shoulder r Wa Outer radius of the winding arrangement r WiInner radius of the winding arrangement b Width of the spring material strip r Ea Outer radius of the end leg r Ei Inner radius of the end leg QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2019 214 673 A1

[0003] WO 2023 062 145 A1

[0003]

Claims

[1] Wave spring (1) for a shaft bearing arrangement (2), the wave spring (1) comprising: - a winding arrangement (5) with a complete helical winding (5a) made of a spring material strip (6), - an axially outer end leg (7, 7a, 7b) which is formed in one piece with the winding arrangement (5) and deviates from the helical shape of the winding arrangement (5) in that the end leg (7, 7a) extends spirally radially outwards, or in that the end leg (7, 7b) extends spirally radially inwards. [2] Wave spring (1) according to claim 1, characterized by that the end leg (7, 7a, 7b) extends from its branching point (8), at which it deviates for the first time from the helical shape of the winding arrangement (5) when viewed in the circumferential direction, over less than 360°, in particular less than 180°, in particular over a maximum of 135°. [3] Wave spring (1) according to claim 1 or 2, characterized bythat a tool engagement structure (9) for clamping the end leg (7, 7a, 7b) is formed on the end leg (7, 7a, 7b). [4] Wave spring (1) according to one of the preceding claims, characterized by that, if the end leg (7, 7a) extends spirally radially outwards, the end leg (7, 7a) has an end leg extension (10) which extends radially inwards. [5] Wave spring (1) according to claim 3 and 4, characterized by that the tool engagement structure (9) is arranged on the end leg extension (10), in particular on its inwardly facing end (10a). [6] Housing (3) for a shaft bearing arrangement (2), which has a bearing seat (11) for a radial bearing (12) and a wave spring seat (13) for the wave spring (1) designed according to one of the preceding claims, wherein the wave spring seat (13) has an end leg contact surface (13a) to which, when the wave spring (1) is seated as intended in the wave spring seat (13), the end leg (7) is clamped, whereby the wave spring (1) is axially secured in a force-fitting manner. [7] Housing (3) according to claim 6, characterized by that the wave spring seat (13) has an insertion bevel (15) which is designed such that when the wave spring (1) is moved axially in the direction towards the wave spring seat (13) the end leg (7) is tensioned radially. [8] Housing (3) according to claim 6 or 7, characterized bythat the wave spring seat (13) has an axial securing groove (14) which is designed such that, when the wave spring (1) is seated in the wave spring seat (13) as intended, the end leg (7) engages in the axial securing groove (14) and is thereby axially secured in a form-fitting manner. [9] Housing (3) according to claim 8, characterized by that the wave spring seat (13) has a disassembly chamfer (16) which is designed such that when the wave spring (1) is moved axially out of its wave spring seat (13), the end leg (7) is radially tensioned, whereby the end leg (7) is disengaged from the axial securing groove (14). [10] Shaft bearing arrangement (2) with a housing (3) designed according to one of claims 6 to 9 and with a wave spring (1) designed according to one of claims 1 to 5, which sits in the wave spring seat (13) and is axially secured by the end leg (7) being clamped to an end leg contact surface (13a). [11] Machine (4) with a shaft bearing arrangement (2) designed according to claim 10, wherein the machine (4) is configured in particular as an electric traction machine for a motor vehicle. [12] Motor vehicle with an engine (4) designed according to claim 11.

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