Sliding sleeve for synchronizer, synchronizer and electric shaft

Abstract

The invention relates to a sliding sleeve (7) for a synchronizing device, comprising an annular sleeve body (17) having a first and a second end face, the sleeve body having an inner toothing on the inner circumferential surface, the inner toothing having teeth, the teeth having a wedge-shaped top ramp (23) on the distal end region, the inner toothing having at least one axial stop, the axial mobility of the sliding sleeve is limited by an axial stop, which is formed between the teeth of the internal tooth portion and is formed in a module tooth (20) having a width in the circumferential direction that is greater than the width of the teeth of the internal tooth portion, the module tooth having at least one recess extending in the axial direction, the recess extends from the first end face of the sleeve body in the direction of the second end face of the sleeve body, and the recess is at least as wide as the width of the tooth space between the teeth of the internal tooth portion in the circumferential direction. The invention also relates to a synchronization device and an electric axle for a motor vehicle.

Description

Technical Field

[0001] The invention relates to a sliding sleeve for a synchronizing device, comprising an annular sleeve body having a first and a second end face, and having an internal toothing on the inner circumference, the internal toothing having teeth which have a wedge-shaped top bevel at a distal end region, and having at least one axial stop by which the axial mobility of the sliding sleeve is limited, the axial stop being formed between the teeth of the internal toothing.

[0002] The present invention also relates to a synchronization device, which comprises: a first receiving portion for a first drive element and a second receiving portion for a second drive element that can be separated from the first drive element; an axially movable sliding sleeve, which has an internal toothing; a synchronous hub, which has an external toothing and is arranged below the sliding sleeve in a radial direction; and a coupling body, which has an external toothing, the internal toothing of the sliding sleeve engaging in the external toothing of the synchronous hub, and the internal toothing is arranged to be able to engage in the external toothing of the coupling body by axial movement; and at least one axial stop, by which the axial movability of the sliding sleeve is limited, and the axial stop is integrated into the internal toothing of the sliding sleeve.

[0003] The invention also relates to an electric axle for a motor vehicle, comprising a synchronization device. Background Art

[0004] In order to limit the switching travel of a synchronization device, such as, in particular, a freewheeling synchronization device, it is known to provide a mechanical stop for a sliding sleeve (also referred to as a "switching sleeve"). The switching travel during synchronization is defined by the axial displacement travel of the sliding sleeve from the neutral position to the end stop, at which the sliding sleeve fully engages in the toothing of the coupling body for the purpose of transmitting force.

[0005] In addition to axial stops in the form of circumferential rims on the coupling body, sliding sleeves with axial stops have also been described in the prior art. For example, AT519200A1 describes a claw coupling device, which includes: a first receptacle for a first drive element and a second receptacle for a second drive element that can be separated from the first drive element; an axially movable sliding sleeve, which has an internal toothing; a synchronous hub, which has an external toothing and is arranged below the sliding sleeve in the radial direction; and a coupling body, which has an external toothing, the internal toothing of the sliding sleeve engaging in the external toothing of the synchronous hub, and the internal toothing is arranged to engage in the external toothing of the coupling body by axial displacement; and at least one axial stop, by which the axial movability of the sliding sleeve is limited and which is integrated into the internal toothing of the sliding sleeve.

[0006] DE 10 2014 208 031 A1 describes a sliding sleeve for synchronizing a gear wheel with a shaft, the sliding sleeve having a coupling toothing for engaging in a counter toothing, the engagement being established by an axial movement of the sliding sleeve. The axial movement is limited by means of a stop element fixed to the sliding sleeve and provided for interacting with the counter toothing. The stop element can be formed on the internal toothing of the sliding sleeve.

[0007] DE102012223761A1 discloses a sliding sleeve of a gear-shift transmission for a motor vehicle, which has an internal toothing with engaging teeth for engaging in counter-toothing and stop teeth as two different tooth types, an axial stop being provided on each stop tooth, and a part of the stop teeth having grooves. The stop teeth can be wider or narrower or shorter than the engaging teeth.

[0008] DE102007030507A1 describes a sliding sleeve for shifting the gear stages of a stepped transmission, the stepped transmission having at least one gear gear whose coupling toothing has coupling teeth, the sliding sleeve being movable from a neutral position in the direction of the gear gear and having teeth for engaging with the coupling teeth, the teeth of the sliding sleeve having tooth tops, and the sliding sleeve having one or more stops for limiting axial mobility, the stops being arranged on the tooth tops and forming stop teeth. Summary of the invention

[0009] The object of the present invention is to provide an axial stop for a synchronization device which is simple to produce and thus enables a space-saving design of the synchronization device, in particular in an electric shaft.

[0010] The object of the present invention is achieved in the sliding sleeve mentioned at the beginning in the following way: the axial stop is formed in a modular toothing, which has a width in the circumferential direction, which is greater than the width of the teeth of the internal toothing, and the modular toothing has at least one recess in the axial direction, which starts on the first end face of the sleeve body and extends in the direction of the second end face of the sleeve body, and the recess is at least as wide in the circumferential direction as the width of the tooth gap between the teeth of the internal toothing.

[0011] This object is also achieved by a synchronization device mentioned at the outset, which has a sliding sleeve according to the invention, or by an electric shaft mentioned at the outset, which has a synchronization device according to the invention.

[0012] Advantageously, a modular toothing is provided by the at least one recess, which forms the toothing for receiving the toothing of the coupling body. The modular toothing thus not only fulfills the function of an axial stop, but also, as part of the internal toothing, fulfills the function of the internal toothing. In contrast to the prior art, the invention makes it possible to design the internal toothing over the entire circumference. The invention makes it possible to provide a compact, axially short synchronization device, thereby simplifying in particular the installation of the synchronization device in the electric shaft.

[0013] According to one embodiment of the invention, it can be provided that the modular toothing has a plurality of recesses in the axial direction, between each recess a tooth is formed, which tooth is formed identically to the tooth of the internal toothing except for the axial length. It is thus possible to form the modular toothing wider in the circumferential direction, so that the modular toothing can contribute to improving the strength of the sliding sleeve itself, so that the sliding sleeve can optionally also be formed shorter in the axial direction. In addition, the mechanical load of the modular toothing can thus be distributed over a larger contact surface of the modular toothing with the toothing of the coupling body during synchronization of different speeds.

[0014] According to another embodiment of the invention, it can be provided that the module tooth has a radial depression which is formed spaced apart from the recess. Thus, the module tooth can also be used to receive or abut against a pressure piece of a synchronization device, as is known per se from the prior art.

[0015] According to another embodiment of the invention, it is possible that the recess has an end face in the axial direction, which is formed with a wedge surface extending opposite to the top bevel, so that the tooth of the coupling body has a larger contact surface on the axial stop and can thus better prevent the tooth from breaking at the axial end of the toothed portion of the coupling body.

[0016] According to another embodiment of the invention, it can also be provided that a plurality of modular teeth are arranged distributed on the circumference of the inner toothing, the modular teeth having at least one recess among the recesses, so that the force flow during the coupling process can be homogenized. In particular, it can be achieved that the impact loads and axial forces during switching are better distributed over the entire circumference of the coupling body. In addition, the manufacturability of the sliding sleeve in sintering technology can also be improved in that the pressure application can be implemented more uniformly during the extrusion of the powder or during calibration.

[0017] Preferably, according to one embodiment of the invention, all modular teeth are designed identically, so that the effects mentioned above can be provided distributed over the circumference of the sliding sleeve.

[0018] Simpler production of the modular toothing can be achieved if the sliding sleeve is designed as a sintered component. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For a better understanding of the invention, the invention is explained in more detail with the aid of the following drawings.

[0020] The attached drawings are greatly simplified schematic diagrams:

[0021] Figure 1 Display electric axis;

[0022] Figure 2 Displays a portion of the synchronization device;

[0023] Figure 3 The sliding sleeve is shown in a front view;

[0024] Figure 4 Display Press Figure 3 A partial enlarged view of the sliding sleeve;

[0025] Figure 5 An embodiment of the module teeth is shown. DETAILED DESCRIPTION

[0026] First of all, it should be pointed out that in the various embodiments described, the same components are provided with the same reference numerals or the same component names, and the disclosure contained in the entire description can be applied to the same components with the same reference numerals or the same component names in a meaningful manner. The orientation descriptions selected in the description, such as top, bottom, lateral, etc., also refer to the directly described and described figures, and these orientation descriptions can be applied to the new orientation in a meaningful manner when the orientation changes.

[0027] exist Figure 1 2 , a so-called electric axle 1 of an electric vehicle is described in a simplified and exemplary manner. In addition to an electric motor 2 and a power electronics module 3 , the electric axle 1 also comprises a synchronization device 4 .

[0028] Although the electric shaft 1 is the preferred application of the synchronization device 4 , the synchronization device 4 can also be used in applications in which freewheeling synchronization is used.

[0029] exist Figure 2 , a detail of an embodiment of a synchronization device 4 is depicted in an oblique view. The synchronization device 4 comprises a first receiving element 5 for a first drive element (e.g. a first shaft body or a first shaft) not depicted and a second receiving element 6 for a second drive element (e.g. a second shaft body or a second shaft) that can be separated from the first drive element. The synchronization device 4 further comprises an annular sliding sleeve 7, a synchronization ring 8, an annular synchronization hub 9 and an annular coupling body 10.

[0030] The coupling body 10 is connected to the second receiving element 6 in a rotationally fixed manner or is formed integrally with the second receiving element and has an external toothing 11 . The external toothing 11 is designed as a spur toothing having teeth 12 .

[0031] The synchronous hub 9 also has an external toothing, but the external toothing is Figure 2 The outer toothing of the synchronous hub 9 is also designed as a spur toothing with teeth. The synchronous hub 9 is arranged on the first receiving element 5 to be connected to the first receiving element in a rotationally fixed manner or to be formed integrally with the first receiving element. The synchronous hub is arranged below the sliding sleeve 7 in the radial direction.

[0032] The synchronizer ring 8 is arranged on the coupling body 10. The synchronizer ring 8 preferably has an external toothing 13 with teeth 14. The external toothing 13 is designed as a spur toothing.

[0033] The external toothing 11 of the coupling body 9 and the external toothing 13 of the synchronizer hub 9 and the synchronizer ring 8 are formed at the same radial height.

[0034] Preferably, the synchronizer ring 8 has a conical surface 15 on the radial inner surface, which rests on a corresponding conical surface 16 of the coupling body 10. In addition, it can be provided that a friction ring or a friction group with a plurality of friction rings is arranged between the two conical surfaces 15, 16, which friction ring or friction group has conical friction surfaces (optionally composed of friction material or friction lining) on ​​the outer and inner circumferences.

[0035] The sliding sleeve 7 has a sleeve body 17. The sleeve body 17 has an internal toothing 18 on the radial inner circumference, which has teeth 19. The internal toothing 18 is designed as a spur toothing and is in permanent engagement with the external toothing of the synchronizer hub 9.

[0036] The sliding sleeve 7 is axially movable in the synchronization device 4, so that the sliding sleeve can be axially moved from a first position to a second position, in which the two drive elements are not coupled to each other, and in which the torque is transmitted between the two drive elements. Figure 2 , the second position of the sliding sleeve 7 is described. Accordingly, the external toothing 11 of the coupling body 10, the external toothing 12 of the synchronizer ring 8, the external toothing of the synchronizer hub 9, and the internal toothing 18 of the sliding sleeve 7 are adapted to each other, so that the internal toothing 18 of the sliding sleeve 7 can mesh with the external toothing of the synchronizer hub 9 and can also mesh with the external toothing 11 of the coupling body 10 and the external toothing 12 of the synchronizer ring 8 in the second position.

[0037] The synchronization device 4 is configured as a one-sided inertia synchronization device. The sliding sleeve 7 cannot therefore move onto the other coupling body, as is known from the gearshift transmission. The power transmission between the sliding sleeve 7 and the coupling body 10 is only realized when the two drive elements mentioned above are synchronized. Previously, the power transmission was blocked by the synchronizer ring 8.

[0038] The synchronization device 4 may also be configured without the synchronization ring 8 .

[0039] An embodiment of the sliding sleeve 7 is Figure 3 and Figure 4 Described in.

[0040] The sliding sleeve 7 has a modular toothing 20. The modular toothing 20 is integrated into the inner toothing 18. The modular toothing does not extend inwardly beyond the inner toothing 18 in the radial direction. The modular toothing 20 forms an axial stop for the sliding sleeve 7, so that the sliding sleeve 7 can only be moved so far in the axial direction until the coupling body 10 comes into contact with the axial stop. The sliding sleeve 7 is thus prevented from "moving beyond" (that is, moving too far) in the axial direction.

[0041] The modular teeth 20 extend in the axial direction between a first end face 21 and a second end face 22 of the sleeve body 17 , like the teeth 19 of the internal toothing 18 .

[0042] If Figure 4 It can be seen that the teeth 19 of the internal toothing 18 of the sliding sleeve 7 have a wedge-shaped top bevel 23 in the distal end region. The teeth 12 of the coupling body 10 and the teeth 14 of the synchronizer ring 8 also have such wedge-shaped top bevels at the distal ends of these teeth 12, 14, which face the top bevels 23 of the teeth 19 of the internal toothing 18 of the sliding sleeve 7. Such a design of the toothing of the inertial synchronizer is known, so that a further explanation thereof is superfluous. When the sliding sleeve 7 is moved from the first position to the second position, the top bevels slide against each other, as is also known.

[0043] The modular toothing 20 has a greater width 24 in the circumferential direction of the sliding sleeve 7 than the remaining teeth 19 of the internal toothing 18. For this purpose, the width 24 of the modular toothing 20 and the width of the remaining teeth 19 are each measured at the same radial height in the radial direction in the region between the tooth root circle and the half-height of the internal toothing 18. Here, the width 24 of the modular toothing 20 is designed such that the width 24 of the modular toothing 20 is at least twice the width of a tooth 19 of the internal toothing 18 of the sliding sleeve 7 plus the width of the tooth gap between two teeth 19 of the internal toothing 18 of the sliding sleeve 7. The modular toothing 20 therefore extends in the circumferential direction of the sliding sleeve 7 over a toothing section that includes at least two teeth 19 of the internal toothing 18 of the sliding sleeve 7. In other words, at least two conventional teeth 19 of the internal toothing 18 of the sliding sleeve 7 are replaced by modular teeth.

[0044] The axial length of the modular toothing 20 can be selected from a range between 70% and 100% of the axial length of the remaining teeth 19 of the inner toothing 18 of the sliding sleeve 7. Preferably, the length 25 of the modular toothing 20 is as large as the length of the remaining teeth 19 of the inner toothing 18 of the sliding sleeve 7.

[0045] The radial height of the modular toothing 20 is preferably the same as the radial height of the teeth 19 of the inner toothing 18 of the sliding sleeve 7. However, the modular toothing 20 can also have a radial height that is at most 10% smaller than the radial height of the teeth 19 of the inner toothing 18 of the sliding sleeve 7.

[0046] If Figure 4 It can be seen that the modular tooth 20 has at least one recess 26 in the axial direction. The recess 26 starts at the tooth tip of the modular tooth 20 and extends in the radial direction at least over the entire radial height of the modular tooth 20. The recess can also be formed deeper and extend into the sleeve body 17, although this is not preferred.

[0047] In addition, the recess 26 starts to extend on the first end surface 21 and extends in the direction of the second end surface 22 of the sleeve body 17. The axial length 27 of the recess 26 can be the axial length 28 of the tooth 12 of the outer toothed portion 11 of the coupling body 10 (see Figure 2 ) plus the axial length of the tooth 14 of the synchronizer ring.

[0048] Furthermore, the recess 26 is at least as wide in the circumferential direction as the width of the tooth gaps between the teeth 19 of the internal toothing 18 of the sliding sleeve 7. As a result, and due to the axial length 27 of the recess 26, it is possible for the recess 26 to accommodate, in the second position (i.e., in the coupled position) a tooth 12 of the external toothing 11 of the coupling body 10 and a tooth 14 of the external toothing 13 of the synchronizer ring 8 (one after the other in the axial direction) in the module toothing 20. The end face 29 of the recess 26 (as viewed in the axial direction) thus forms an axial stop for the sliding sleeve 7, since the accommodated tooth 14 of the external toothing 13 of the synchronizer ring 8 rests against this end face 29 at the maximum axial displacement of the sliding sleeve 7.

[0049] In a non-preferred embodiment of the synchronization device 4 , the synchronization ring 8 has no blocking surface, ie no top bevel.

[0050] Thus, in the second position (i.e., in the coupled position), the recess 26 in the module toothing 20 accommodates only one tooth 12 of the external toothing 11 of the coupling body 10. The end face 29 of the recess 26 (viewed in the axial direction) thus forms an axial stop for the sliding sleeve 7, since the accommodated tooth 12 of the external toothing 11 of the coupling body 10 rests against this end face 29 during the maximum axial displacement of the sliding sleeve.

[0051] According to another embodiment of the synchronization device 4, it can be provided that the synchronizer ring 8 has an external toothing 13 with teeth 14 and a top bevel, but the external toothing 13 is interrupted (removed) in the region of the modular teeth 20, i.e. has a recess, which has a width in the circumferential direction that is at least as large as the width 24 of the modular teeth 20 in the circumferential direction. Basically, the recess can be produced by removing a section of the external toothing 13 of the synchronizer ring 8 that includes two teeth 14 (including the tooth gap between the two teeth).

[0052] In this embodiment as well, the recess is preferably designed in the same way as in the embodiment with synchronizer ring 8 and external toothing 13 , so that the teeth 12 of the external toothing 13 of the coupling body 10 bear against the end face 29 which serves as an axial stop for the sliding sleeve 7 .

[0053] According to a preferred embodiment, the module tooth 20 has a plurality of recesses 26 in the axial direction. In particular, the module tooth 20 has two (e.g. Figure 4 ) or three or four recesses 26. For each additional recess 26, the width 24 of the modular toothing 20 in the circumferential direction of the sliding sleeve 7 is increased by at least a sum that is equal to the width of a tooth 19 of the internal toothing 18 and the width of a tooth gap between two teeth 19 of the internal toothing 18 of the sliding sleeve 7. In particular, three, four or five conventional teeth 19 of the internal toothing 18 are replaced by modular teeth 20.

[0054] The plurality of recesses 26 are preferably all designed identically with regard to their geometric design.

[0055] Preferably, a tooth is formed between the plurality of recesses 26, which tooth is formed identically to the tooth 19 of the internal toothing 18 of the sliding sleeve 7, except for the axial length. The modular toothing 20 also continues the internal toothing 18 of the sliding sleeve 7 with a plurality of recesses 26, so that the internal toothing 18 is formed over the entire circumference on the first end face 21.

[0056] For the embodiment with a plurality of recesses 26, the explanations above for three embodiments in which one tooth 14 of the external toothing 13 of the synchronizer ring 8 and one tooth 12 of the external toothing 11 of the coupling body 10 are accommodated, or one tooth 12 of the external toothing 11 of the coupling body 10 is accommodated and the synchronizer ring 8 has no external toothing 13, or one tooth 12 of the external toothing 11 of the coupling body 12 is accommodated and the synchronizer ring 8 has an external toothing 13 which is removed in the region of the modular toothing 20, apply accordingly to all recesses 26 in the modular toothing 20. However, a mixture of these three embodiments is also possible, so that, for example, one recess of the plurality of recesses 26 accommodates only one tooth 12 of the external toothing 11 of the coupling body 10, and another recess 26 of the modular toothing 20 accommodates both one tooth 12 of the external toothing 11 of the coupling body 10 and one tooth 14 of the external toothing 13 of the synchronizer ring 8.

[0057] As Figure 2 It can be seen that according to a further embodiment, it can be provided that the synchronization device 4 has at least one spring-loaded pressure piece 30, as is known per se from synchronization devices of the prior art. For further details of such a pressure piece 30, reference is therefore made to the relevant prior art. With regard to the sliding sleeve 7 described here, it can be provided that the module tooth 20 has a radial depression 31, which is designed to be spaced apart from the recess 26. The depression 31 can be provided, for example, for partially accommodating a spring-loaded ball of the pressure piece 30. By means of the ball and the depression 31, a centering function can be achieved, for example.

[0058] According to a further embodiment of the sliding sleeve 7, it can be provided that the end face 29 of the recess 26 is formed with a wedge surface 32 which runs in opposition to the top bevel 23, as in the Figure 5 It is therefore possible that the top bevel 23 can rest on the wedge surface 32 over the entire surface (or more entirely).

[0059] Although it is possible to arrange or form only one modular tooth 20 in the inner toothing 18 of the sliding sleeve 7, according to a preferred embodiment, the inner toothing 18 of the sliding sleeve 7 has a plurality of axial stops in the form of modular teeth 20, which can in particular all be formed identically, preferably in the form of the described modular teeth 20. For example, between 2 and 8, in particular 3, can be provided (see Figure 3 ) or 4 such modular teeth 20. Preferably, the plurality of modular teeth 20 are symmetrically arranged or formed distributed on the circumference of the inner toothing 18, for example, staggered by 120° in the case of three modular teeth 20 or staggered by 90° in the case of four modular teeth. The angles refer to the center axis of the modular teeth 20 extending in the axial direction.

[0060] The sliding sleeve 7 is preferably made of a sintered material, that is, it is made according to a sintering method (powder metallurgy method). The sintering method itself is known from the prior art and will not be described in detail.

[0061] Alternatively, the sliding sleeve 7 can also be produced by means of an additive manufacturing method (3D printing).

[0062] The internal toothing 18 of the sliding sleeve 7 preferably extends over the entire axial width of the sliding sleeve 7. It can also extend over only a partial section of this width.

[0063] The exemplary embodiments show possible embodiments of the sliding sleeve 7 and the synchronizing device 4 , wherein it should be noted that various combinations of the individual embodiments are possible.

[0064] For reasons of clarity, it should finally be pointed out that, in order to provide a better understanding of the structure, the sliding sleeve 7 or the synchronizing device 4 are not necessarily depicted to scale. Reference numerals list

[0065] 1 Electric axis

[0066] 2 Electric motors

[0067] 3Power Electronic Module

[0068] 4 Synchronization device

[0069] 5 Receiving components

[0070] 6 Receiving components

[0071] 7 Sliding sleeve

[0072] 8 Synchronous ring

[0073] 9 Synchronous hub

[0074] 10 couplings

[0075] 11 External teeth

[0076] 12 teeth

[0077] 13 External teeth

[0078] 14 teeth

[0079] 15 Conical surface

[0080] 16 cone surface

[0081] 17 sleeve body

[0082] 18 Internal teeth

[0083] 19 teeth

[0084] 20 module teeth

[0085] 21 End face

[0086] 22 End face

[0087] 23 Top Bevel

[0088] 24 Width

[0089] 25 Length

[0090] 26 recesses

[0091] 27 Length

[0092] 28 Length

[0093] 29 terminal surface

[0094] 30 pressure parts

[0095] 31 Depression

[0096] 32 Wedge

Claims

1. A sliding sleeve (7) for a synchronization device (4), comprising an annular sleeve body (17), the sleeve body having a first and a second end face (21, 22), and the sleeve body having an internal toothing (18) on the inner circumference, the internal toothing having teeth (19), the teeth having a wedge-shaped top bevel (23) at the distal end region, and the internal toothing having at least one axial stop, by which the axial mobility of the sliding sleeve (7) is limited, the axial stop being formed between the teeth (19) of the internal toothing (18), characterized in that The axial stop is formed in a modular tooth (20), which has a width (24) in the circumferential direction, which is greater than the width of the teeth (19) of the internal toothing (18), and the modular tooth has at least one recess (26) extending in the axial direction, which starts on the first end face (21) of the sleeve body (17) and extends in the direction of the second end face (22) of the sleeve body, and the recess is at least as wide as the width of the tooth gap between the teeth (19) of the internal toothing (18) in the circumferential direction.

2. The sliding sleeve (7) according to claim 1, characterized in that The modular toothing (20) has a plurality of recesses (26) arranged side by side in the axial direction, with a tooth being formed between each recess (26) and being formed identically to the teeth (19) of the internal toothing (18) except for the axial length.

3. The sliding sleeve (7) according to claim 1 or 2, characterized in that The module tooth (20) has a radial depression (31) which is designed to be spaced apart from the recess (26).

4. The sliding sleeve (7) according to any one of claims 1 to 3, characterized in that The recess (26) has an end surface (29) in the axial direction, which is formed with a wedge surface (32) extending opposite to the top bevel (23).

5. The sliding sleeve (7) according to any one of claims 1 to 4, characterized in that A plurality of modular teeth (20) are distributed on the circumference of the inner toothing (18), each of the modular teeth having at least one recess among the recesses (26).

6. The sliding sleeve (7) according to claim 5, characterized in that All modular teeth (20) are designed identically.

7. The sliding sleeve (7) according to any one of claims 1 to 6, characterized in that The sliding sleeve is designed as a sintered component.

8. A synchronization device (4), comprising: A first receiving element (5) for a first drive element and a second receiving element (6) for a second drive element that can be separated from the first drive element; An axially displaceable sliding sleeve (7) having an internal toothing (18); a synchronizing hub (9) having an external toothing and being arranged below the sliding sleeve (7) in the radial direction; and a coupling body (10) having an external toothing (11), the internal toothing (18) of the sliding sleeve (7) engaging in the external toothing (11) of the synchronizing hub (9) and being arranged so as to be able to engage in the external toothing (11) of the coupling body (10) by axial displacement; and at least one axial stop, by which the axial displaceability of the sliding sleeve (7) is limited and which is integrated into the internal toothing (18) of the sliding sleeve (7), characterized in that the sliding sleeve (7) is a sliding sleeve according to any one of claims 1 to 7.

9. An electric axle (1) for a motor vehicle, comprising a synchronization device (4), characterized in that: The synchronization device (4) is a synchronization device according to claim 8.

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