Axially clamped planar serrated assembly and method of engaging constant velocity joint with hub with wheel bearing using planar serrated assembly

Abstract

The invention relates to an axially clamped flat serration assembly, comprising: a first component (10), in particular a constant velocity joint, having a first flat serration (11); a second component (20), in particular a hub with a wheel bearing, having a second planar serration (21), the first planar serration (11) and the second planar serration (12) engaging with each other; a clamping device (30) by means of which the first planar serration (11) and the second planar serration (21) are axially clamped against each other in the clamped state thereof; and a ring (40) surrounding and sealing the first planar serration (11) and the second planar serration (21) radially on the outside. In the unclamped state of the clamping device (30), the ring (40) provides assembly protection by means of which the first planar serrations (11) and the second planar serrations (21) remain loosely engaged with each other such that the axial clearance (x) is smaller than the height (h) of the teeth of the first planar serrations (11) and of the second planar serrations (21). The invention further relates to a method for joining a constant velocity joint to a hub with a wheel bearing using such a planar serration assembly.

Description

Technical Field

[0001] The present invention relates to an axially clamping planar serrated portion assembly, comprising: a first member having a first planar serrated portion; a second member having a second planar serrated portion, wherein the first planar serrated portion and the second planar serrated portion engage with each other; a clamping device by means of which the first planar serrated portion and the second planar serrated portion axially clamp each other in their clamped state; and a ring that radially surrounds and seals the first planar serrated portion and the second planar serrated portion on the outside.

[0002] Furthermore, the present invention relates to a method for engaging a constant velocity universal joint with a wheel hub having wheel bearings when using a planar serrated part assembly. Background Technology

[0003] Axially clamped planar serrated assembly (sometimes also referred to as a bevel or spur tooth assembly) is used as a backlash-free torque transmission connection in vehicle construction, such as between a drive universal joint shaft and a wheel hub. Especially when transmitting high torque, particularly in electrically driven motor vehicles, the use of axially clamped planar serrated assemblies offers advantages over conventional longitudinally mating tooth assemblies because it ensures good torque transmission even under varying high torque conditions, without relative movement (which can be generated by the torsional elasticity of the longitudinally mating teeth) and without disruptive noise (thumping).

[0004] To ensure torque transmission, the planar sawtooth assembly must be tensioned with high axial force. Corrosion must be correspondingly protected for the two mating planar sawtooth sections, which are thus subjected to high material stress. Furthermore, during assembly, care must be taken to ensure that the corresponding planar sawtooth sections properly engage with each other, thus avoiding tooth-to-tooth assembly.

[0005] To avoid such tooth-to-tooth assembly, document DE 10 2007 057 047 A1 proposes an axially clamping planar serrated assembly, in which the clamping device is supported by a spring element via connecting bolts. The possible spring travel between the tooth-to-tooth and tooth-to-back positions is negligible, less than the height of the teeth in the planar serrated assembly. The spring element can be an elastomer sleeve and / or a helical spring. When assembling the hub assembly and the universal joint assembly connected to it via the planar serrated assembly, the connecting bolts are tightened with a small torque in the first step to automatically establish a tooth-to-back position in the planar serrated assembly by applying torque or under the action of the spring element in the tooth-to-tooth position. Only after a temporary interruption is full tension of the aforementioned components achieved by tightening the bolt connection with a high torque. However, installing the spring element implies additional assembly costs. Furthermore, the spring element (which is only needed for assembly to avoid the tooth-to-tooth position) remains in the entire assembly, increasing its weight. Additionally, corresponding structural space must be provided for the spring element. Therefore, efforts are currently being made to avoid using such spring components.

[0006] A planar serrated assembly with axial clamping of the type mentioned at the beginning is known from document DE 10 2005 018 126 A1. The aforementioned spring element is eliminated in this assembly. However, in this case, it is difficult to prevent tooth-to-tooth positioning during clamping because it is not only necessary to align the two mutually mating planar serrated portions with each other, but also to simultaneously supply and tighten the clamping device while ensuring proper alignment. In other words, the constant velocity universal joint of the universal joint shaft must be held in place relative to the hub while the connecting bolts are being placed. This can be done by an assembly worker or it can be automated. However, due to the time coupling, the positioning and tightening of the components to be joined need to be completed in the same assembly cycle. This is technically complex because three parts must be operated simultaneously, thus requiring improvement.

[0007] Furthermore, the sealing of the planar serrated portion assembly according to document DE 10 2005 018 126 A1 is relatively complex. However, for the reasons already mentioned, such a seal should not be abandoned. Document DE 10 2005 018 126 A1 proposes a simple sealing ring made of plastic or alternatively a sealant to prevent moisture and dirt from entering the joint of the paired planar serrated portions from the outside.

[0008] In this regard, a rubber-metal seal is proposed in document DE 10 2012 207 054 A1, which radially surrounds interlocking planar serrated portions. This seal is quite complex. The rubber lip of the seal must be painted on the contact surface on the journal. However, this painting is associated with high consumption and cost. Furthermore, the rubber lip must be protected from damage during assembly. For this reason, the rubber-metal seal at the wheel bearing is protected by a transport protector in the form of a cap before installation. There is also a need for simplification and improvement in this regard. Summary of the Invention

[0009] In general, the purpose of this invention is to further improve the assembly and sealing of the axially clamping planar serrated portion assembly.

[0010] This objective is achieved by an axially clamping planar serrated portion assembly having the features of claim 1. The axially clamping planar serrated portion assembly according to the invention comprises: a first member having a first planar serrated portion; a second member having a second planar serrated portion, wherein the first and second planar serrated portions engage with each other; a clamping device by which the first and second planar serrated portions axially clamp each other in their clamped state; and a ring that radially surrounds and seals the first and second planar serrated portions on the outside. Here, in the unclamped state of the clamping device, the ring provides assembly protection by which the first and second planar serrated portions remain loosely engaged with each other, such that the axial clearance is less than the height of the teeth of the first and second planar serrated portions.

[0011] Therefore, compared to document DE 10 2005 018 126 A1, the assembly steps (i.e., alignment of the components to be joined while ensuring that tooth-to-tooth assembly is eliminated, and clamping on the other hand) can be decoupled without problems. This keeps the operation simple. Furthermore, due to the ring design, compared to document DE 10 2007 057 047 A1, the additional spring element can be omitted.

[0012] Furthermore, the ring also provides a sealing function to prevent the intrusion of moisture and dirt, thus eliminating the need for additional measures in this regard. In particular, it eliminates the need for complex rubber-metal seals and / or painted components. It also eliminates the need for transport protective elements as described in conjunction with document DE10 2012 207 054 A1.

[0013] Therefore, the solution according to the invention overcomes the aforementioned problems related to assembly and corrosion in an extremely simple manner while reducing the number of components and procedures required in this regard. This results in significant cost savings in the manufacture of the axially clamping planar serrated assembly.

[0014] The specific embodiments of the present invention are the subject of the other claims.

[0015] Thus, for example, the ring can be fixed at one of the first and second components and connected to the other of the first and second components via a locking mechanism. This allows the ring to be pre-assembled at one of the components to be joined together. For this purpose, the ring can be securely pressed, glued, or otherwise fixed at one of the two components.

[0016] According to another particular embodiment of the invention, the ring is configured with locking noses distributed around its periphery, and the locking noses engage with one or more notches in another member after overcoming a protrusion in that member. Upon overcoming the protrusion, the ring is temporarily slightly elastically expanded so as to spring back after overcoming the protrusion. Preferably, the number of locking noses spaced apart from each other can be selected as needed. It is generally preferably selected in the range of 3 to 20.

[0017] The ring may in particular have a section that forms a locking nose, wherein the section of the ring's locking nose can be radially elastically spring in and out, so as to easily and reliably overcome locking resistance.

[0018] During assembly, the correct connection can be verified by the snap-fit ​​mechanism. In particular, this can identify the absence of unwanted tooth-to-tooth positions.

[0019] According to another particular embodiment of the invention, in the unclamped state of the clamping device, the locking nose is axially and clearance-wise received in one or more corresponding recesses. From this pre-assembled state, clamping of the planar serrated assembly can then be performed in another step. The ring with the locking nose is preferably configured for pre-assembly such that the weight of the components to be joined together and the force exerted during the placement of the clamping device are maintained if the pre-assembled state is not loosened again.

[0020] Preferably, the ring can be coordinated with the planar serrated portions to be paired such that when the protrusion is overcome by the locking nose, the overlap of the teeth of the first and second planar serrated portions is 30% to 90% of their tooth height. This allows for reliable elimination of tooth-to-tooth misalignment after pre-assembly.

[0021] Instead of pre-fixation via the locking nose, for this purpose, the ring may be slotted at multiple locations on its circumference, allowing it to be inserted into other components with full attachment. The slot dimensions are designed to ensure the same retention and sealing functions described above regarding the locking nose.

[0022] According to another particular embodiment of the invention, the ring has a surrounding sealing surface that presses against a corresponding sealing surface of another component in the clamping state of the clamping device. In this case, the clamping process of the clamping device can be used to further enhance the sealing effect. Clearly, the force required for this additional sealing effect is only a minimal fraction of the total axial force required for clamping the planar serrated assembly.

[0023] Furthermore, the surrounding sealing surface at the ring and the corresponding sealing surface at another component can optionally be tapered to further improve the sealing effect.

[0024] According to another particular embodiment of the invention, the ring is entirely made of plastic, thereby allowing it to be manufactured particularly simply and cost-effectively.

[0025] The aforementioned axially clamping planar serrated portion assembly is preferably used to connect a constant velocity universal joint to a wheel hub with a wheel bearing; however, the invention is not limited to this purpose. In the case mentioned above, the first component is a constant velocity universal joint, the second component is a wheel hub with a wheel bearing, and the clamping device is a clamping bolt, which is centrally guided through the first and second planar serrated portions to clamp the first and second components together. It has been shown that such a connection can reliably transmit high torque transfer with a compact external size without interference noise generation and possible relative movement in the connection.

[0026] In one implementation variant, the ring can lock and seal against the inner ring of the wheel bearing (which is fitted to the hub in its aspect). In this case, the inner ring is understood as a component to be separately fixed to the hub.

[0027] In another embodiment, with the clamping bolts in the clamped state, the ring can axially press against and seal the wheel bearing seal. This allows the paired planar serrated portions and the wheel bearing seal to support each other, and reduces the number of interfaces to the external environment.

[0028] In this variation, the ring and hub sections can be locked together, regardless of whether the wheel bearing has its own inner ring.

[0029] The aforementioned axially clamped planar serrated portion assembly achieves an advantageous and easily operable assembly process while ensuring proper meshing of the paired planar serrated portions. In particular, a method with the features of claim 15 is proposed. This method, when using the aforementioned planar serrated portion assembly, involves engaging a constant velocity universal joint with a wheel hub equipped with a wheel bearing. In a first step, a ring is used to loosely assemble the constant velocity universal joint and the wheel hub with the wheel bearing, and the ring ensures that partial engagement of the first and second planar serrated portions is maintained. In a second step, a clamping bolt is used to clamp the first and second planar serrated portions together, wherein the first and second planar serrated portions abut against each other without gaps, and the ring radially outwards seals the engagement of the first and second planar serrated portions. Attached Figure Description

[0030] The path for carrying out the invention will now be described in more detail with reference to the embodiments shown in the accompanying drawings. In the drawings: Figure 1 A longitudinal sectional view of an axially clamping planar serrated portion assembly according to a first embodiment of the present invention is shown. Figure 2 A schematic diagram of another embodiment is shown to illustrate the pre-assembly position (left) and final assembly position (right) of components to be joined together, including a planar serrated portion assembly with axial clamping. Figure 3 A longitudinal sectional view of an axially clamping planar serrated portion assembly according to another embodiment of the present invention is shown. Figure 4 An axial view of the first implementation variant of the ring is shown. Figure 5 An axial view of a second implementation variant of the ring is shown, and Figure 6 An exploded view of a constant velocity universal joint and a wheel hub with wheel bearings is shown, which can be interconnected via a planar serrated assembly that is axially clamped. Detailed Implementation

[0031] Figure 1 The first embodiment shows an axially tensioned planar serrated assembly in the final tensioned assembly position.

[0032] The axially clamped planar serrated portion assembly includes a first member 10 with a first planar serrated portion 11. Currently, an end-side radial toothed structure at one member is understood as a planar serrated portion, which can be connected to a corresponding end-side radial toothed structure at another member for torque transmission purposes. Currently, the first member 10 is... Figure 6 The constant velocity universal joint 110 is shown as a universal joint shaft, but is not limited thereto.

[0033] The axially clamped planar serrated portion assembly further includes a second member 20 with a second planar serrated portion 21. The second member 20 is currently in... Figure 6 The example shown is a hub 120 with a wheel bearing 150, but is not limited thereto.

[0034] Here, the first planar serrated portion 11 and the second planar serrated portion 21 mesh with each other. Figure 1 It is gapless and suitable for transmitting high torque.

[0035] In addition, a clamping device 30 is provided, preferably in the form of a clamping bolt 130, through which the first planar serrated portion 11 and the second planar serrated portion 21 are axially clamped to each other in their clamped state.

[0036] The clamping device 30 preferably extends centrally through the two planar serrated portions 11 and 21. The clamping device 30, or clamping bolt 130, is particularly supported at the second member 20 and screwed onto the first member 10. Reverse installation is also possible.

[0037] The axially clamped planar serrated portion assembly ultimately includes a ring 40 that radially surrounds and seals the first planar serrated portion 11 and the second planar serrated portion 21 on the outside.

[0038] In the unclamped state of the clamping device 30, the ring 40 provides assembly protection by maintaining the first planar serrated portion 11 and the second planar serrated portion 21 loosely engaged with each other. Currently, this loosely engaged state is also considered a pre-assembled position, in which the first component 10 and the second component 20 are roughly aligned with each other.

[0039] As in Figure 2 As shown on the left, in the pre-assembly position, the axial clearance x between the two planar serrated portions 11 and 21 is less than the height h of the teeth of the first planar serrated portion 11 and the second planar serrated portion 21. If the pre-assembly position is reached, it can be concluded that the tooth-to-tooth position of the teeth of the first planar serrated portion 11 and the second planar serrated portion 21 is excluded.

[0040] Accordingly, in the second step, after the pre-assembly position is established, the clamping device 30 can be clamped to establish a gapless engagement between the first planar serrated portion 11 and the second planar serrated portion 21 and accordingly reach the... Figure 2 The right side of the middle and in Figure 1 The final assembly position is shown in the diagram.

[0041] In the final assembly position, the ring 40 reliably prevents moisture and dirt from entering the joint between the first planar serrated portion 11 and the second planar serrated portion 21 from the outside, thereby protecting the engagement from corrosion.

[0042] The arrangement and design of ring 40 with respect to the first member 10 and the second member 20 can be carried out in different ways as will be described in detail below. It should be noted that the arrangement of ring 40 and possible joining structures with respect to the first member 10 and the second member 20 can also be reversed in principle.

[0043] In one implementation variant, such as in Figures 1 to 3 As exemplarily shown, ring 40 can be secured at one of the first and second components, 10, 20, and is connected to the other of the first and second components, 20, 10, via a locking mechanism 41. This locking mechanism reliably identifies the arrival at the pre-assembly position, i.e., excludes the tooth-to-tooth position.

[0044] The ring 40 can be secured at one of the first and second components 10 and 20 (currently, exemplary, the first component 10) by pressing, bonding, or other means. Preferably, this is done before the two components 10 and 20 are engaged together to reach a pre-assembled position.

[0045] For the locking mechanism 41, a locking nose 41a may be constructed at the ring 40, which is distributed around the periphery of the ring and engages in one or more notches 23 at the other or second member 20 after overcoming a protrusion 22 at another member (currently exemplarily the second member 20).

[0046] exist Figure 4 An axial view of such a ring 40 is shown. The ring 40 currently has three locking noses 41a at its inner peripheral surface 42. However, the number of locking noses 41a may be less or greater than shown. Preferably, the number is in the range of about 3 to 20.

[0047] Accordingly, the corresponding protrusion 22 and the corresponding recess 23 are located at the outer peripheral section of the second member 20. The protrusion 22 and the recess 23 can be configured as a continuous surrounding structure, such that the angular position of the ring 40 in the circumferential direction is not important in assembly. However, the protrusion 22 can also be provided by multiple individual protrusions and / or the recess 23 can be provided by multiple individual recesses.

[0048] In a variation of the illustrated embodiment, instead of being located at the inner peripheral surface 42, the locking nose 41a may also be arranged at the outer peripheral surface 43 of the ring 40. Accordingly, the protrusion 22 and the notch 23 of the second member 20 are then located at its inner peripheral section.

[0049] As already mentioned, in the unclamped state of the clamping device 30, the locking nose 41a is received with axial clearance in one or more corresponding recesses 23. Preferably, when overcoming the protrusion 22 by the locking nose 41a, the overlap of the teeth of the first planar serrated portion 11 and the second planar serrated portion 21 is 30% to 90% of its tooth height.

[0050] Instead of using the card lock nose 41a, similar to Figure 2 The left side can also achieve pre-fixation of the pre-assembly position via a grooved ring 40 in this sub-region. Figure 5 Accordingly, another embodiment of the ring 40 is shown exemplarily, which has slots at multiple locations on its periphery. This facilitates clamping it at either the outer or inner peripheral segment of the second member 20. The slots 45 are positioned such that retention by the ring ensures a sealing effect. The number of slots 45 is... Figure 5 Four are shown in the diagram. However, similar to the number of locking noses 41a, the number can also be chosen to be smaller or larger. For not only locking noses 41a but also slots 45, the coordination is implemented such that the connection can reliably retain the self-weight of the components 10 and 20 to be engaged with each other, as well as the force when the clamping device 30 is placed.

[0051] To facilitate assembly, especially when using a locking mechanism 41 with locking noses 41a, the ring 40 may have sections 44 where these locking noses 41a are constructed, which can be radially elastically spring in and out, so as to more easily overcome the locking resistance formed by the protrusions 22.

[0052] Therefore, the chamfers constructed at the locking nose 41a and / or protrusion 22 can also serve a supporting function.

[0053] In addition, the ring 40 may have a surrounding sealing surface 46, which is pressed against the corresponding sealing surface 24 of another component (currently exemplarily the second component 20) in the clamping state of the clamping device 30.

[0054] The sealing surface 46 at ring 40 can be formed by its end sidewall section, as shown in Figure 1 and Figure 2 As shown in the image.

[0055] As in accordance with Figure 3 As shown in another embodiment, the surrounding sealing surface 46 at the ring 40 and the corresponding sealing surface 24 at the other member 20 may be constructed in a tapered shape.

[0056] In other embodiments and in further variants not shown, corresponding tapered sealing surfaces 46 or 24 may also be provided. For example, in Figure 1 and Figure 2 The chamfer of the central protrusion 22 can be used as a contact surface for the corresponding inclined sealing surface additionally provided on the ring side.

[0057] Ring 40 can be made entirely of plastic, thus avoiding the need for a sensitive sealing lip.

[0058] The aforementioned ring 40 serves as an assembly aid for positioning the components 10 and 20 to be joined without tooth-to-tooth contact. This engagement to reach the pre-assembled position can be performed in the first step or work cycle. When the clamping device 30 is subsequently placed and clamped in the second step or work cycle, no additional holding device is required for the corresponding second component 20 in this embodiment. The axial force applied during clamping is on the order of approximately 80 kN and greater.

[0059] In one implementation variant, the retaining force of the ring 40 can be configured to enable axial movement to the final position while fully utilizing the clamping force of the clamping device 30.

[0060] As mentioned above, the aforementioned axially clamping planar serrated portion assembly can be used to connect the constant velocity universal joint 110 to the hub 120 with the wheel bearing 150, as this is in Figure 6 As shown in the image.

[0061] Regarding the foregoing embodiments and variations, the first component 10 is a constant velocity joint 110 and the second component 20 is a hub 120 with a wheel bearing 150, wherein the ring 40 is fixed to the first component 10 and to the second component 20 via a locking lug 41a or in the region of the groove 45. However, the ring 40 can also be installed in reverse, that is, fixed to the second component 20 or the hub 120 with the wheel bearing 150, and the region with the locking lug 41a or the groove 45 is connected to the first component 10 or the constant velocity joint 110. Similarly, corresponding notches and protrusions can be provided on the first component 10 or the constant velocity joint 110.

[0062] A section of the wheel bearing 150 can be integrated into the wheel hub 120. This is particularly suitable for the inner ring of the wheel bearing 150. However, the inner ring can also be provided entirely or partially as a separate component 151, as currently shown. In the illustrated embodiment, the outer ring 152 of the wheel bearing 150 is supported internally by two rolling element rings 153. Figure 6 In this example, the oscillating bearing 160 is flange-connected to the outer ring 152.

[0063] Clamping device 30 Figure 6 The center is formed by clamping bolts 130, which are guided through the first planar serrated portion 11 at the constant velocity universal joint 110 and the second planar serrated portion 21 at the hub, so as to axially clamp the relevant components together.

[0064] In one embodiment, the head 131 of the clamping bolt 130 is supported at the hub, while the threaded section 132 of the clamping bolt 130 is screwed into the threaded hole 12 at the constant velocity universal joint 110 (preferably its universal joint cover).

[0065] The ring 40, serving as an assembly aid and sealing device, is fixed to the outer peripheral section of the constant velocity universal joint 10. Figures 1 to 3 It can be identified that the ring 40 is connected to a corresponding mating structure (especially its inner ring 151) at the hub 120 and / or the wheel bearing 150.

[0066] Figure 1 An exemplary variant is shown in which the aforementioned protrusion 22 and recess 23 are constructed at the inner ring 151 of the wheel bearing 50 / 150. In this case, the ring 40 can be engaged with and abutted against the inner ring 151 for sealing.

[0067] exist Figure 1 In the middle, the corresponding sealing surface 46 of the inner ring 40 is supported at the corresponding wall section of the inner ring 151. During assembly, the sealing surface 46 can press against the corresponding wall section of the inner ring 151 to improve the sealing effect.

[0068] In this variation, such as in Figure 2 As exemplarily shown, in the clamped state of the clamping bolt 30, the ring 40 can axially press against and seal the sealing ring 154 of the wheel bearing seal of the wheel bearing 50 / 150. In this case, the sealing ring 154 (against which the ring 40 is supported) is fixedly arranged at the inner ring 151 of the wheel bearing 50, and if necessary at the hub 120, so as to avoid relative movement between the sealing ring 154 and the ring 40 during operation.

[0069] As in Figure 3 As shown, a mating structure for directly connecting the ring 40 to the hub 120 can also be constructed independently of the presence of the inner ring 151 of the wheel bearings 50 / 150. Figure 3 In one implementation variant, the protrusion 22, the notch 23, and the sealing surface 24 are respectively directly molded onto the second member 20, which forms the hub 120.

[0070] Finally, a method for engaging the constant velocity universal joint 110 with a wheel hub 120 having a wheel bearing 150 when using a planar serrated assembly of the aforementioned type will be briefly described. It should be noted that this method can also be applied to other uses of the aforementioned planar serrated assembly, where, in the above sense, the constant velocity universal joint 110 can be understood as the first component 10 and correspondingly the wheel hub 120 as the second component 20.

[0071] During assembly, the ring 40 can first be fixed to the first component 10 or the constant velocity universal joint 110. The first component 10 or the constant velocity universal joint 110 is supplied to the engagement process with the ring 40 attached.

[0072] In the first step of the engagement process, the constant velocity joint 110 and the hub 120 with the wheel bearing 150 are loosely assembled together using the ring 40. Here, the first planar serrated portion 11 and the second planar serrated portion 21 are partially engaged, so that their teeth overlap, but they have not yet reached the gap-free position. In this pre-assembled position, the hub 120 is fixed relative to the constant velocity joint 110, so that the two components can no longer be easily separated from each other, but at the same time, the planar serrated portions 11 and 21 are not in a tooth-to-tooth position. This process is simple to operate.

[0073] In the second step, the first planar serrated portion 11 and the second planar serrated portion 21 are clamped together using clamping bolt 130. Since the hub 120 is pre-fixed relative to the constant velocity universal joint 110, no additional retaining device is required when placing and tightening the clamping bolt 130. By tightening, the first planar serrated portion 11 and the second planar serrated portion 21 come into close contact with each other without gaps. The appropriate clamping is selected according to the torque to be transmitted. This process can also be performed simply. When the assembly position is reached, the ring 40 seals the engagement of the first planar serrated portion 11 and the second planar serrated portion 21 radially outward, thus transforming it from an assembly aid into a sealing device.

[0074] The axially clamped planar serrated assembly is detachable, and in particular, can be disassembled without damage. This is advantageous in customer service situations.

[0075] For this purpose, the locking mechanism 41 can be configured such that the locking nose 41a can be released by a higher axial force or bending moment. Accordingly, a suitable contact bevel or chamfer can be provided.

[0076] Similarly, when using slot 45 for clamping, the clamping force can be adjusted so that it is possible to loosen when the clamping force is overcome.

[0077] One method for disassembly, for example in a customer service situation, can be performed in a simple manner as follows. First, slightly loosen the clamping device 30 or clamping bolt 130, preferably so that the partial engagement of the serrated portions 11 and 21 remains intact. For this purpose, the clamping bolt 130 can be loosened, for example, by approximately 3 to 9 mm (corresponding to 2 to 6 turns in a 1.5 mm pitch). Use a soft-faced hammer to tap the head 31 of the clamping bolt 130 until the ring 40 is released in the area of ​​the locking mechanism 41 or the slot 45. The constant velocity universal joint 110 can be prevented from falling off by the clamping bolt 130 not being fully loosened. After the ring 40 is loosened, the clamping device 30 or clamping bolt 130 can be completely unscrewed.

[0078] The invention has been described in more detail above with reference to embodiments and other variations. Even if not explicitly described, individual technical features set forth above in the context of other individual features may be implemented independently of or in combination with other individual features, provided it is technically feasible. Therefore, the invention is explicitly not limited to the described embodiments and variations, but includes all designs defined by the claims.

[0079] List of reference numerals 10 First Component 11 First Plane Serrated Section 12 Threaded holes 20 Second component 21 Second plane sawtooth section 22. Protrusion 23 Notch 24 Sealing surface 30 Clamping equipment 40 rings 41. Locking mechanism 41a Card Lock Nose 42 Inner peripheral surface 43. Outer peripheral surface Section 44 45 slots 46 Sealing surface 50 wheel bearings 110 constant velocity universal joint 120 rims 130 clamping bolt 131 Head 132 Threaded Section 150 wheel bearings 151 Inner ring as a separate component 152 Outer Ring 153 Rolling element ring 154 wheel bearing sealing ring 160 Oscillating Bearing h tooth height x-axis clearance Axis A.

Claims

1. An axially clamping planar serrated portion assembly, comprising: The first component (10) has a first planar serrated portion (11). The second component (20) has a second planar serrated portion (21). The first planar serrated portion (11) and the second planar serrated portion (21) mesh with each other. A clamping device (30) wherein, in its clamping state, the first planar serrated portion (11) and the second planar serrated portion (21) are axially clamped together, and A ring (40) radially surrounds and seals the first planar serrated portion (11) and the second planar serrated portion (21) on the outside. Its features In the unclamped state of the clamping device (30), the ring (40) provides assembly protection, through which the first planar serrated portion (11) and the second planar serrated portion (21) remain loosely engaged with each other, such that the axial clearance (x) is less than the height (h) of the teeth of the first planar serrated portion (11) and the second planar serrated portion (21).

2. The axially clamping planar serrated portion assembly according to claim 1, characterized in that, The ring (40) is fixed at one of the first member (10) and the second member (20) and is connected to the other of the first member (10) and the second member (20) via a locking mechanism (41).

3. The axially clamping planar serrated portion assembly according to claim 21, characterized in that, The ring (40) is configured with a locking nose (41a) which is distributed around the periphery of the ring and engages in one or more notches (23) in the other member after overcoming a protrusion (22) in the other member.

4. The axially clamping planar serrated portion assembly according to claim 3, characterized in that, The ring (40) has a section (44) that constitutes the locking nose, and the section (44) of the ring (40) that constitutes the locking nose is radially elastically spring-in and spring-out to overcome locking resistance.

5. The axially clamping planar serrated portion assembly according to any one of claims 3 or 4, characterized in that, The locking nose (41a) is axially and gap-equipped in one or more corresponding notches (23) in the unclamped state of the clamping device (30).

6. The axially clamping planar serrated portion assembly according to any one of claims 3 to 5, characterized in that, When the protrusion (22) is overcome by the locking nose (41a), the overlap of the teeth of the first planar serrated portion (11) and the second planar serrated portion (21) is 30% to 90% of its tooth height (h).

7. The axially clamping planar serrated portion assembly according to any one of claims 1 or 2, characterized in that, The ring (40) has grooves at multiple locations on its periphery.

8. The axially clamping planar serrated portion assembly according to any one of claims 1 to 6, characterized in that, The ring has a surrounding sealing surface (46) that, in the clamping state of the clamping device (30), presses against a corresponding sealing surface (24) of another component.

9. The axially clamping planar serrated portion assembly according to claim 8, characterized in that, The surrounding sealing surface (46) at the ring (40) and the corresponding sealing surface (24) at the other component are tapered.

10. The axially clamping planar serrated portion assembly according to any one of claims 1 to 9, characterized in that, The ring (40) is made entirely of plastic.

11. The axially clamping planar serrated portion assembly according to any one of claims 1 to 10, characterized in that, The first component (10) is a constant velocity universal joint (110), the second component (20) is a hub (120) with a wheel bearing (150), and the clamping device (30) is a clamping bolt (130) which is guided at the center through the first planar serrated portion (11) and the second planar serrated portion (21) to clamp the first component (10) and the second component (20) together.

12. The axially clamping planar serrated portion assembly according to claim 11, characterized in that, The ring (40) engages with and seals against the inner ring (151) of the wheel bearing (150) mounted on the hub (120).

13. The axially clamping planar serrated portion assembly according to claim 11 or 12, characterized in that, In the clamped state of the clamping bolt (30), the ring (40) axially presses against the sealing ring (154) of the wheel bearing seal of the wheel bearing (150) and seals it.

14. The axially clamping planar serrated portion assembly according to claim 11, characterized in that, The ring (40) and the hub (120) are locked in section.

15. A method for engaging a constant velocity universal joint (110) with a wheel hub (120) having a wheel bearing (150) using a planar serrated portion assembly according to any one of claims 11 to 14, wherein In the first step, the constant velocity universal joint (110) and the wheel hub (120) with the wheel bearing (150) are loosely assembled together using the ring (40), and the ring (40) ensures that the partial engagement of the first planar serrated portion (11) and the second planar serrated portion (21) is maintained. In the second step, the first planar serrated portion (11) and the second planar serrated portion (21) are clamped together using the clamping bolt (130), wherein, The first planar serrated portion (11) and the second planar serrated portion (21) are closely abutted to each other without gaps and the ring (40) seals the engagement between the first planar serrated portion (11) and the second planar serrated portion (21) radially outward.

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