Transmission device with a hub arrangement and method for assembling the hub arrangement

Abstract

Transmission device (2) with a hub arrangement (1), with a plug-in section (3), wherein the plug-in section (3) has a toothed area (4), with a hub (7), wherein the hub (7) has a counter-toothing region (9), wherein the toothing region (4) engages in the counter-toothing region (9), so that the hub (7) is positively connected to the plug-in section (3) in a circumferential direction about a main axis (H) of the hub arrangement (1), with a grooved ring (12), wherein the plug-in section (3) has a plug-in groove (13) and the hub (7) has a hub groove (14), wherein the grooved ring (12) engages in the plug-in groove (13) and in the hub groove (14), so that the hub (7) is positively connected to the plug-in section (3) in the axial direction to the main axis (H), wherein the plug-in groove (13) has an outer plug-in groove wall (15b) and the hub groove (14) has an inner hub groove wall (16a), wherein the groove ring (12) bears with an outer side surface (17b) against the outer plug-in groove wall (15b) and with an inner side surface (17a) against the inner hub groove (16a), the entire toothing area (4) and / or the entire counter-toothing area (9) is / are arranged on one axial side of the grooved ring (12), characterized in that the transmission device (2) has at least one planetary stage, wherein the plug-in section (3) is designed as a ring gear of the planetary stage.

Description

[0001] The invention relates to a device having the features of claim 1 and a method according to claim 9.

[0002] In vehicle transmissions, it is often necessary to connect transmission components to one another in a rotationally fixed manner. Many applications require a shaft or axle to be connected to a component in a rotationally fixed manner. The component must be connected to the shaft or axle in a rotationally fixed manner in one direction. Form-lock connections are often used for this type of connection to either transmit or support torque. In addition to the connection in the rotational direction, the components must also be fixed to one another in the axial direction. This can be achieved by means of material-to-material, force-locking, or form-locking connections.

[0003] Especially for axial connections, positive-locking connections are often used, whereby the components are secured to each other via a retaining ring and thus connected in a positive-locking manner.

[0004] DE 10 2015 213 731 A1 discloses a connecting arrangement for a transmission device of a motor vehicle, comprising a first and a second shaft, wherein the first shaft has a first spline and the second shaft has a second spline, and wherein the two shafts are connected to one another in a rotationally fixed manner for torque transmission via the respective spline. The two shafts are axially secured by a retaining ring arranged substantially radially between the two shafts, wherein an elastic element for limiting axial play between the two shafts is arranged at least axially between the two shafts.

[0005] DE 10 2018 125 349 A1 discloses a connection arrangement for torque transmission, comprising a shaft journal and a hollow shaft connecting piece, which are connected to one another in a rotationally fixed manner via positive locking means for torque transmission. The shaft journal and the hollow shaft connecting piece have groove elements that interact with a retaining ring for axial locking purposes. The groove element of the shaft journal is designed as an external groove, and the groove element of the hollow shaft connecting piece is designed as an external groove with two sector cutouts radially penetrating the hollow shaft connecting piece. The retaining ring penetrates the hollow shaft connecting piece in the area of ​​the sector cutouts and engages in the external groove of the shaft journal. The retaining ring extends over the entire circumference of the arrangement of the shaft journal and the hollow shaft connecting piece.The retaining ring has two retaining ring elements extending over a partial circumference of the arrangement, which are connected to one another and fixed radially.

[0006] DE 295 01 158 U1 shows a locking device for a drive shaft of a power-driven tool such as a brush cutter or lawn mower.

[0007] The object of the present invention is to propose an improved transmission device with a hub assembly. This object is achieved by the features of claim 1. Preferred or advantageous embodiments of the invention emerge from the subclaims, the following description, and the accompanying figures.

[0008] The subject matter of the invention is a hub arrangement which is designed for a transmission device. The hub arrangement has a plug-in section as a component, wherein the plug-in section has a toothed region. In principle, the plug-in section can be, for example, a plug-in axle or a plug-in shaft or a plug-in pin. It is also possible for the plug-in section to form part of a wheel. The plug-in section has a toothed region. The toothed region is preferably designed as an axial toothed region, wherein the teeth extend in the axial direction. The toothed region can be a gear wheel region, so that it is or could be designed for a meshing coupling. Alternatively, however, the teeth can also be designed such that they are sufficient for a positive connection in the circumferential direction.For example, it is possible for only a few teeth, such as fewer than ten, to be provided in the circumferential direction, or for the teeth to be designed, for example, as webs, in particular axially extending webs. Preferably, the toothing area is designed as an external toothing area and / or is arranged on the outer circumference of the plug-in section. The plug-in section is designed as a ring gear of a planetary stage.

[0009] Particularly preferably, the transmission device is designed, for example, as an electric drive for a vehicle. For example, the transmission device is realized as an electric axle with an electric motor. The hub assembly preferably forms part of a planetary stage, wherein a drive torque of the electric motor is translated and / or divided in the planetary stage. In particular, the hub assembly, as a planetary stage, can form a transmission section and / or a differential section.

[0010] The hub arrangement has a hub. In particular, the hub is designed as a machine element which can be pushed onto the plug-in section and / or wherein the plug-in section can be pushed into the hub. The hub has a mating toothing region, wherein the mating toothing region engages in the toothing region, in particular to form a positive-locking region. Due to the intermeshing of the toothing region and the mating toothing region and / or due to the positive-locking region, the hub is positively connected to the plug-in section in the circumferential direction. Preferably, the mating toothing region and the toothing region are complementary to one another. Alternatively or additionally, the mating toothing region and the toothing region engage with one another in such a way that they connect the plug-in section and the hub with low or even zero tolerances in the circumferential direction.Preferably, the counter-toothing region is designed as an internal toothing region and / or arranged on the inner circumference of the hub.

[0011] The hub arrangement has a grooved ring, wherein the grooved ring can optionally be designed as a retaining ring or as a lamellar ring. Particularly preferably, the grooved ring has an interruption so that its diameter can be reduced for assembly in an assembled state and has a larger diameter than the assembled state in an operating state. Particularly preferably, the grooved ring has freely extending ends which do not protrude beyond an inner diameter or an outer diameter of the grooved ring, wherein the respective diameter is defined, for example, by a region of the grooved ring which is arranged diametrically or opposite the ends. The grooved ring is preferably made of metal.

[0012] The plug-in section has a plug-in groove, which is preferably circumferential. The hub has a hub groove, which is preferably circumferential. The plug-in groove and the hub groove are located at the same axial height. The grooved ring engages both the plug-in groove and the hub groove simultaneously, so that the hub is positively connected to the plug-in section in at least or exactly one axial direction relative to the main axis.

[0013] The hub assembly defines a main axis, with the plug-in section and the hub arranged coaxially with the main axis. The terms "outside" and "inside" are used below to define an axial direction, which are to be understood, for example, as relative positions to one another. Particularly preferably, the plug-in section is inserted into the hub in a plug-in direction, with external components, surfaces, etc. being arranged in front of internal components, surfaces, etc. in the plug-in direction.

[0014] The plug-in groove has an outer plug-in groove wall, which preferably extends in a radial plane to the main axis. The hub groove has an inner hub groove wall, which preferably extends in a further radial plane to the main axis. The grooved ring rests with an outer side surface on the outer plug-in groove wall and with an inner side surface on the inner hub groove wall. In particular, the grooved ring rests directly physically on the respective groove wall. In particular, no grooved rings, spacer rings, etc. are arranged between the grooved ring and the groove walls. The grooved ring directly contacts the respective groove wall, so that the axial positive connection is established.

[0015] Within the scope of the invention, it is proposed that the entire toothing region and / or the entire counter-toothing region, in particular the positive-locking region, is / are arranged on one axial side of the grooved ring. Preferably, the toothing region, the counter-toothing region, and / or the positive-locking region are positioned exclusively on one axial side of the grooved ring. Particularly preferably, the toothing region, the counter-toothing region, and / or the positive-locking region are arranged on an outer side of the grooved ring.

[0016] One consideration of the invention is that the lateral positioning of the grooved ring next to the toothing area, counter-toothing area and / or form-fitting area makes it easier to assemble, if necessary disassemble and / or manipulate. On the other hand, the lateral positioning allows the toothing area, counter-toothing area and / or form-fitting area to have a large axial width, so that it has a high load-bearing capacity. Because the grooved ring rests directly on the plug-in section and the hub, further components can be dispensed with, so that on the one hand axial installation space can be saved and on the other hand the axial play between the plug-in section and the hub can be controlled and preferably reduced. Furthermore, the lateral positioning makes it easier to check assembly for quality assurance purposes.The fact that the grooved ring engages both the plug-in groove and the hub groove ensures that the grooved ring cannot accidentally pop out. Overall, the invention provides an overall concept that, through the combination of measures, leads to an improved axial coupling between the plug-in section and the hub.

[0017] In a preferred development of the invention, the plug-in groove has an inner plug-in groove wall, wherein the inner plug-in groove wall preferably extends in a radial plane to the main axis and / or is aligned parallel to the outer plug-in groove wall. The grooved ring rests with an inner side surface against the inner plug-in groove wall. Alternatively or additionally, the groove width of the plug-in groove corresponds to the width of the grooved ring. This development ensures that the grooved ring is arranged with low tolerances in the axial direction. In a preferred development, the hub has an outer axial stop, in particular an end stop in the plug-in direction, for the plug-in section, so that the axial position in the plug-in direction is defined by the axial stop.On the other hand, it is preferred that the outer side surface of the grooved ring is positioned without end stops relative to the outer hub groove wall, so that the axial position of the plug-in section in the plug-in direction is defined by the outer axial stop, thus avoiding overdefinition.

[0018] In a preferred embodiment of the invention, the hub groove has a hub groove base, wherein the hub groove base is designed to taper outward in the axial direction. Preferably, the grooved ring rests against the hub groove base in a force-fitting manner in the radial direction, in particular so that the grooved ring is slightly preloaded in the radial direction and thus arranged without tolerances. In particular, vibration or rattling of the grooved ring can be avoided in this way.

[0019] Optionally, it is additionally proposed that the hub has at least one axial opening, preferably several axial openings for holding the grooved ring and alternatively or additionally for inserting a tool section in order to fix the grooved ring during assembly of the plug-in section. From a structural point of view, the axial opening is therefore an axially continuous area in the hub which is suitable for reaching the grooved ring in order to fix it, in particular in the installed position in an assembled state. The axial opening has a minimum radial diameter of 3 mm, preferably 4 mm and in particular 5 mm. This minimum radial diameter ensures that the tool section can reach the grooved ring in the assembled state of the hub arrangement in order to fix it or manipulate it.

[0020] One consideration in this development is that the grooved ring is a tried and tested, reliable means of axially securing two components to one another. In principle, it is possible to attach the grooved ring to an outer side so that it can be easily held or secured. However, the load distribution is often uneven when the grooved ring is positioned on the outer side. It is therefore advantageous to position the grooved ring axially further from the outer side, at least to the edge. The grooved ring is usually difficult or even impossible to access in this position. In this development, the axial opening means that the grooved ring can still be reached by a tool section even in the installed position, so that it can be held in an assembled state or secured in the assembled state, for example during assembly.The training thus supports simplified assembly while simultaneously improving the functional properties of the hub assembly.

[0021] In a preferred embodiment of the invention, the axial opening is open radially inward at the edge. This represents a peripheral recess or opening. This embodiment has the advantage that the tool section can be positioned on the plug-in section to hold and / or fix the grooved ring in the assembled state while the assembly comprising the plug-in section and the tool section is inserted into the hub in the plug-in direction.

[0022] It is expedient for the axial opening to extend in the axial direction at least to the grooved ring and / or to the plug-in groove and / or to the hub groove. In principle, it would be conceivable for the axial opening to be shorter in the axial direction and for the grooved ring to be fixed or held in the assembled state by the hub during assembly. However, a more controlled assembly of the grooved ring and thus the plug-in section and the hub arrangement as a whole is achieved if the axial opening extends to the grooved ring, to the plug-in groove and / or to the hub groove, since the grooved ring can then be fixed or held until the installation position and only there is it released in order to switch from the assembled state to the installed state.

[0023] It is further advantageous for the axial opening to extend radially outward at least to a radius corresponding to the radius defined by the radius of the plug-in groove base plus the annular width of the grooved ring. The axial opening preferably extends radially outward by at least 2 mm, preferably at least 4 mm. This design specification ensures that a tool section can be arranged in the axial opening and can hold the grooved ring in a compressed state radially from the outside in an assembled state.

[0024] The mating toothing area of ​​the hub has mating teeth and mating tooth roots, wherein the mating teeth and mating tooth roots are preferably arranged alternately. With respect to the main axis, the mating teeth and the mating tooth roots each take up an angular segment, wherein the angular segments can be of the same or different design. The axial opening is provided in an angular segment of a mating tooth root. With a mating tooth root, the hub already has an axially running gap, so that the axial opening can be easily arranged. The advantage of using the angular segment of a mating tooth root is in particular that the load-bearing capacity of the hub is not reduced or only slightly reduced by the axial opening.

[0025] Another object of the invention relates to a method for assembling the hub assembly as described above or according to one of the preceding claims. In the method, the grooved ring is preloaded in the plug-in groove into an assembled state. Preferably, the grooved ring is subjected to a radial force, so that the outer diameter of the grooved ring is reduced in the assembled state compared to the installed state. Preloading is performed by means of a clamping device, wherein the clamping device preferably has at least one actuator and is thus designed as an externally powered clamping device.

[0026] In the assembled state, the grooved ring is held and / or fixed in the plug-in groove with a tool. For this purpose, the tool has at least one, several, or a plurality of tool sections that hold the grooved ring in the plug-in groove.

[0027] Subsequently, the plug-in section with the grooved ring and the tool is removed from the clamping device as a subassembly, preferably as a self-retaining subassembly, in particular separated from it. In particular, the grooved ring is arranged in the subassembly in the assembled state.

[0028] The subassembly is inserted into the hub, with at least one tool section penetrating the axial opening of the hub. This allows the grooved ring to be moved into the installed position together with the plug-in section in the assembled state. The tool is then removed from the hub assembly, allowing the grooved ring to be released from the assembled state into the installed state and positioned in the installed position. This simplified assembly supports improved coupling.

[0029] Further features, advantages, and effects of the invention will become apparent from the following description of preferred embodiments of the invention and the accompanying figures. These show: Fig. 1 a schematic three-dimensional representation of a hub arrangement as an embodiment of the invention; Fig. 2 and Fig. 3 each shows a schematic longitudinal section of the hub arrangement in the Fig. 1; Fig. 4 is an axial plan view of the hub assembly of the preceding figures; Fig. 5 is a schematic three-dimensional exploded view of a subassembly for mounting the hub assembly of the preceding figures; Fig. 6 a schematic three-dimensional representation of the hub arrangement; Fig. 7 a schematic longitudinal section of the hub arrangement in the Fig. 1 with tool inserted; Fig. Figure 8 is an axial plan view from the inside of the hub assembly of the preceding figures; Fig. 9 a schematic longitudinal section of the hub arrangement in the Fig. 1 with tool inserted;

[0030] The Fig. 1 shows a schematic, three-dimensional representation of a hub assembly 1 as an exemplary embodiment of the invention. The hub assembly 1 forms part of a transmission device 2, wherein the transmission device 2 is designed, for example, as an electric drive for a vehicle. For example, the transmission device 2 is implemented as an electric axle with an electric motor. The hub assembly 1 forms, for example, part of a planetary stage, wherein a drive torque of the electric motor is translated and / or divided. In particular, the hub assembly 1, as a planetary stage, can form a transmission section and / or a differential section. The hub assembly 1 defines a main axis H.

[0031] The hub assembly 1 has a plug-in section 3, wherein the plug-in section 3 is designed as a ring gear. The plug-in section 3 has internal teeth, wherein the internal teeth in this embodiment are realized as helical teeth. In the gear device 2, planetary gears (not shown) mesh with the internal teeth of the plug-in section 3. The plug-in section 3 has a circumferential toothing region 4 which is formed on an outer circumference of the plug-in section 3. The toothing region 4 has teeth 5 and tooth roots 6 which are arranged alternately in the circumferential direction around the main axis H. The teeth 5 are designed as axially extending webs, the tooth roots 6 are arranged as axially extending grooves between the teeth 5.

[0032] The hub assembly 1 has a hub 7, wherein the hub 7 is stationary in a housing section 8 of the transmission device 2. The hub 7 has a counter-toothing region 9, wherein the counter-toothing region 9 is arranged, in particular formed, on an inner circumference of the hub 7. The counter-toothing region 9 has counter-teeth 10 and counter-tooth roots 11. The counter-teeth 10 and counter-tooth roots 11 are arranged alternately in the circumferential direction around the main axis H. The counter-teeth 10 are designed as axially extending webs, and the counter-tooth roots 11 are designed as axially extending grooves.

[0033] When the hub arrangement 1 is assembled, the toothing area 4 engages in the counter-toothing area 9, so that the plug-in section 3 and the hub 7 are positively connected to one another in the circumferential direction around the main axis H.

[0034] The hub assembly 1 has a grooved ring 12 for axially securing the plug-in section 3 of the hub 7. The grooved ring 12 is designed as a metal ring and has an interruption in the circumferential direction around the main axis H. To accommodate the grooved ring 12, the plug-in section 3 has a circumferential plug-in groove 13 and the hub 7 has a circumferential hub groove 14. In an operating position, the grooved ring 12 engages in both the plug-in groove 13 and the hub groove 14. Thus, the plug-in section 3 is secured in the axial direction with respect to the main axis H in the hub 7. Overall, the hub assembly 1 creates a shaft / axle-hub connection.

[0035] During operation, drive torques are supported via the plug-in section 3 and corresponding forces are directed into the housing section 8.

[0036] The Fig. Figure 2 shows a three-dimensional view of a longitudinal section through the hub assembly 1, wherein the longitudinal section is laid through a tooth base 6 of the toothing area 4 and / or through a counter tooth 10 of the counter toothing area 9. Thus, the hub 7 can be seen in the upper area and the plug-in section 3 in the lower area.

[0037] During assembly, the plug-in section 3 is inserted into the hub 7 in a plug-in direction S, wherein the hub 7 forms an axial end stop for the plug-in section 3 in the plug-in direction S. Surfaces which are at the front in the plug-in direction S are referred to as inside or inboard, surfaces which are at the rear in the plug-in direction S are referred to as outside or outboard.

[0038] The plug-in groove 13 is arranged in the plug-in section 3, wherein the plug-in groove 13 has an outer plug-in groove wall 15a and an inner plug-in groove wall 15b. The hub groove 14 has an inner hub groove wall 16a and an outer hub groove wall 16b. The grooved ring 12 has an inner side surface 17a and an outer side surface 17a, wherein the side surfaces 17a, b face axially outward.

[0039] In the installed state of the grooved ring 12 and in its installed position, the inner side surface 17 a of the grooved ring 12 physically abuts and / or touches the inner plug-in groove wall 15 a. The outer side surface 17 b of the grooved ring 12 physically abuts and / or touches the outer hub groove wall 16 b in the installed state. This results in a flow of force between the outer plug-in groove wall 15 a or the side surface of the toothing region 4 via the outer side surface 17 a of the grooved ring 12 via the grooved ring 12 to the inner side surface 17 b of the grooved ring 12 and subsequently to the outer hub groove wall 16 b.

[0040] The groove width of the plug-in groove 13 corresponds to the width of the grooved ring 12. Thus, the outer plug-in groove wall 15b can also physically and / or contactingly bear against the outer side surface 17b of the grooved ring 12 in the installed state. The inner hub groove wall 16a, on the other hand, is spaced apart or arranged with a tolerance to the inner side surface 17a. The axial securing of the plug-in section 3 in the plug-in direction S is thus assumed by the axial end stop of the hub 7, while the axial securing of the plug-in section 3 in the opposite direction to the plug-in direction S and thus in the disassembly direction is assumed by the grooved ring 12.

[0041] The hub groove 14 has a hub groove bottom 18, wherein the hub groove bottom 18 is designed in the insertion direction in the longitudinal section shown so that the radius becomes smaller and / or is formed as a slope, so that the grooved ring 12 can bear force-fittingly against the hub groove bottom 18 with a corner region.

[0042] The inner diameter of the grooved ring 12 is dimensioned in the installed state such that it is smaller than the outer diameter of the plug-in section 3 in a tooth root 6. In contrast, the outer diameter of the grooved ring 12 is dimensioned in the installed state such that it is larger than an inner diameter of the hub 7.

[0043] The toothing area 4 and the counter-toothing area 9 together form a positive-locking area 19 in the circumferential direction around the main axis H. The positive-locking area 19, the toothing area 4 and / or the counter-toothing area 9 are limited to an inner axial side toward the grooved ring 12. On the outer axial side toward the grooved ring 12, the hub 7 and the plug-in section 3 are designed to be non-engaging with one another in the circumferential direction around the main axis H.

[0044] On the inner axial side of the grooved ring 12, a radial gap 20 is provided between the plug-in section 3 and the hub 7, which is continuous in the circumferential direction around the main axis H. The radial gap 20 is delimited radially inward by tooth ribs 22 and radially outward by mating tooth ribs 23, wherein the tooth ribs 22 form axial extensions of the teeth 5 and the mating tooth ribs 23 form axial extensions of the mating teeth 10, wherein the tooth height of the ribs 22, 23 is reduced in the radial direction compared to the teeth 5 and mating teeth 10, so that the tooth ribs 22 and the mating tooth ribs 23 are arranged without engagement with one another in the circumferential direction. The radial gap 20 is thus formed radially inward by a shortening of the teeth 5 and radially outward by a shortening of the mating teeth 10.

[0045] The Fig. 3 shows in the same representation as in the Fig. 2 shows the grooved ring 12 in an assembled state, wherein the grooved ring 12 is clamped radially inward, so that its outer diameter is reduced. In the assembled state, the outer diameter of the grooved ring 12 is smaller than the outer diameter of the radial gap 20, so that an assembly gap remains, allowing a subassembly 21 comprising the plug-in section 2 and the grooved ring 12 to be inserted into the hub 7 in the insertion direction without collision during assembly.

[0046] The Fig. Figure 4 shows the hub assembly 1 in an axial plan view from the outside, showing the plug-in section 3 and the hub 7, as well as the grooved ring 12. This illustration shows, on the one hand, the tooth ribs 22 and the counter-tooth ribs 23 and the resulting radial gap 20. Between the counter-tooth ribs 23, the counter-tooth bases 11 can be seen, which simultaneously form axial openings 24. From a structural perspective, the axial openings 24 in this exemplary embodiment correspond to the counter-tooth bases 11 in an axial plan view. The axial openings 24 are open radially inward at the edges.

[0047] A method for assembling the plug-in section 3 with the grooved ring 12 into the hub 7 is explained below: The Fig. 5 shows the subassembly 21, which comprises the plug-in section 3, the grooved ring 12, and a tool 25, or is formed by these components. The tool 25 has a support body 26, which is designed as an annular disk. On one axial side, a plurality of tool sections 27, which are implemented as axially extending bolts, are arranged on the support body 26. The tool sections 27 are arranged in the same grid in the circumferential direction as the mating tooth roots 11 of the mating toothing region 4 of the hub 7. The inner circumference formed by the tool sections 27 is dimensioned such that the tool sections 27 bear against the grooved ring 12 in the assembled state. The tool sections 27 are thus distributed such that the tool 25 can be pushed onto the plug-in section 3, and the tool sections 27 are arranged at the same angular positions as the teeth 5. The tool 25 is designed as a rigid tool.

[0048] During assembly of the plug-in section 3, in a first process step, the grooved ring 12 is brought from an expanded operating state into an assembled state by radial forces. A clamping device (not shown) is used for this purpose. Subsequently, the tool 25 is placed onto the plug-in section 3, with the tool sections 27 holding and / or fixing the grooved ring 12 in the assembled state, thereby forming the subassembly 21. In a next process step, the subassembly 21 is separated from the clamping device.

[0049] In the Fig. 6 shows how the subassembly 21 is inserted into the hub 7 in the assembled state, wherein the grooved ring 12 is held in the assembled state by the tool sections 27 during insertion.

[0050] The Fig. 7 shows in a similar representation as the Fig. 2 and Fig. 3 shows the insertion of the subassembly 21 into the hub 7. It can be seen that the tool sections 27 of the tool 25 are retracted into the counter-tooth bases 11 and / or axial openings 24. The counter-tooth bases 11 and / or axial openings 24 are dimensioned in the axial direction such that the subassembly 21, and in particular the grooved ring 12, can be positioned into the installation position. The tool 25 can then be removed, and the hub assembly 1 is assembled. The advantage of this method is that only the comparatively lightweight tool 25, without a clamping device, is used for assembly.

[0051] The Fig. Figure 8 shows the hub assembly 1 in an axial plan view from the inside against the plug-in direction S. The plug-in section 3, the grooved ring 12, and the hub 7 can each be seen in sections. The grooved ring 12 lies in the plug-in groove 13 of the plug-in section 3, with the toothed rims 22 of the plug-in section 3 being concealed by the grooved ring 12. On the hub 7, however, the counter-toothed rims 23 can be seen, with the tool sections 27 being arranged between the counter-toothed rims 23 in the counter-tooth bases 11 and / or in the axial openings 24, and fixing the grooved ring 12 radially inward in the assembled state.

[0052] The Fig. 9 shows a similar representation as in the Fig.7 shows the hub assembly 1, wherein the tool 25 additionally has a holding device 28 for positively holding the plug-in section 3 in the subassembly 21. The holding device 28 is designed as a pivotable hook which engages around the plug-in section 3 from the radial inside in order to fix it to the tool 25, in particular to the support body 26. In the installed position, the hook device 28 can be pivoted open, so that the coupling between the plug-in section 3 and the tool 25 is released and the tool 25 can be removed from the subassembly 21 and / or the hub assembly 1. List of reference symbols 1 hub arrangement 2 Gear device 3 plug-in section 4 Gearing area 5 teeth 6 dental reasons 7 Hub 8 Housing section 9 Counter-toothing area 10 opposing teeth 11 reasons for opposing teeth 12 Grooved ring 13 Plug-in groove 14 Hub keyway 15 a,b inner and outer slot wall 16a,b inner and outer hub groove wall 17 a,b inner and outer side surface of the grooved ring 12 18 Hub groove bottom 19 Form-fitting area 20 Radial gap 21 Subassembly 22 tooth rims 23 opposing tooth rims 24 axial openings 25 tools 26 supporting bodies 27 tool sections 28 Holding device 29 Hole H main axis S Plug direction

Claims

[1] Transmission device (2) with a hub arrangement (1), with a plug-in section (3), wherein the plug-in section (3) has a toothed area (4), with a hub (7), wherein the hub (7) has a counter-toothing region (9), wherein the toothing region (4) engages in the counter-toothing region (9), so that the hub (7) is positively connected to the plug-in section (3) in a circumferential direction about a main axis (H) of the hub arrangement (1), with a grooved ring (12), wherein the plug-in section (3) has a plug-in groove (13) and the hub (7) has a hub groove (14), wherein the grooved ring (12) engages in the plug-in groove (13) and in the hub groove (14), so that the hub (7) is positively connected to the plug-in section (3) in the axial direction to the main axis (H), wherein the plug-in groove (13) has an outer plug-in groove wall (15b) and the hub groove (14) has an inner hub groove wall (16a), wherein the groove ring (12) bears with an outer side surface (17b) against the outer plug-in groove wall (15b) and with an inner side surface (17a) against the inner hub groove (16a), the entire toothing area (4) and / or the entire counter-toothing area (9) is / are arranged on one axial side of the grooved ring (12), characterized by , that the transmission device (2) has at least one planetary stage, wherein the plug-in section (3) is designed as a ring gear of the planetary stage. [2] Transmission device (2) with a hub arrangement (1) according to claim 1, characterized bythat the plug-in groove (13) has an inner plug-in groove wall (15a), wherein the groove ring (12) rests with an inner side surface (17a) against the inner plug-in groove wall (15a) and / or that the groove width of the plug-in groove (13) corresponds to the width of the groove ring (12). [3] Transmission device (2) with a hub arrangement (1) according to one of the preceding claims, characterized by that the hub (7) forms an outer axial stop for the plug-in section (3) in the axial direction. [4] Transmission device (2) with a hub arrangement (1) according to claim 2 or 3, characterized by that the hub groove (14) has a hub groove bottom (18), wherein the hub groove bottom (18) is designed to taper outwards in the axial direction. [5] Transmission device (2) with a hub arrangement (1) according to one of the preceding claims, characterized bythat the hub (7) has at least one axial opening (24) for inserting a tool (25) during assembly of the grooved ring (12). [6] Transmission device (2) with a hub arrangement (1) according to claim 5, characterized by that the axial opening (24) is open radially inwards at the edge. [7] Transmission device (2) with a hub arrangement (1) according to claim 5 or 6, characterized by that the axial opening (24) is arranged in the angular segment of a tooth base (6) of the counter-toothing area (9). [8] Transmission device (2) with a hub arrangement (1) according to claims 5 to 7, characterized by that the axial opening (24) extends radially outwards at least to a radius which corresponds to the radius which is given by the radius of the plug-in groove base plus the annular width of the groove ring (12). [9] Method for assembling the transmission device (2) with a hub arrangement (1) according to one of the preceding claims, wherein the grooved ring (12) is pre-tensioned in the plug-in groove (13) by means of a clamping device in an assembled state, wherein the grooved ring (12) is held and / or fixed in the assembled state with a tool (25) by at least one tool section (27) of the tool (35) holding the grooved ring (12) in the plug-in groove (13), wherein the plug-in portion (3) with the tool (25) is removed from the clamping device as a subassembly (21), wherein the subassembly (21) is inserted into the hub (7), wherein the at least one tool section (27) passes through the axial opening (24) of the hub (7) in order to position the grooved ring (12) in the assembled state between the hub (7) and the plug-in portion (3), wherein the tool (25) is subsequently removed from the hub arrangement (1) becomes,to bring the grooved ring (12) from the assembly state to the installation state in the installation position.,

Images