Gearbox with oil collector

Abstract

The invention relates to a transmission (1) having at least one oil collector (19). The oil collector (19) is provided with oil guide nozzles (22) and fastening elements (30). In each case, one oil guide nozzle (22) is inserted axially in one of the oil inlets (5). The oil collector (19) is held on the support part (2) by means of the fastening elements (30), which in each case are fixedly engaged in one of the connection holes (28). On the side facing away from the transmission (1), each of the fastening elements (30) is followed in the axial direction by a platform (31), which is configured on the oil collector. On each of the platforms (31), at least one protrusion protrudes in each case axially from the flat surface (32) of the respective platform (31) beyond the platform (31) and beyond the surface (32).

Description

Technical Field

[0001] The present invention relates to a transmission device having at least one oil collector, wherein the transmission device has at least one support member with a connection hole and an oil inlet, and wherein the oil collector has at least one support plate and a channel connected to the support plate and extending about a rotation axis aligned about the axial direction of the transmission device, wherein the oil collector is further provided with an oil guide nozzle and a fastening element, and wherein, in each case, an oil guide nozzle is axially inserted into one of the oil inlets, and wherein the oil collector is held on the support member by means of a fastening element, said fastening element being at least partially fixedly engaged in one of the connection holes in each case. Background Technology

[0002] Such a transmission device is disclosed in DE 10 2011 005 724 A1. This transmission device is part of a drive unit driven by an electric motor. An oil collector is an auxiliary device for collecting lubricating oil from the transmission device, and the lubricating oil captured and collected in the channel is guided to lubrication points that would otherwise be difficult to access or insufficiently supplied due to centrifugal force. The oil collector has a support plate and a channel connected to the support plate. The oil collector or support plate is equipped with oil guide nozzles and fastening elements. Each oil guide nozzle is axially inserted into an oil passage in the oil passage of the clutch assembly. The oil collector is held on the clutch assembly by means of the fastening elements. On the side opposite to the transmission device, each of the fastening elements follows a flat platform on the oil collector in the axial direction. The oil collector is axially supported on the clutch assembly by a protrusion extending axially from the platform and maintained at a distance such that a radial through-groove is formed between the platform and the channel of the oil collector in the region of the fastening element. Some lubricant can pass through the grooves of the oil collector and thus through these grooves to the oil guide nozzles.

[0003] US 10 240 670 B2 and DE 10 2013 206 880 B3 disclose planetary drives with oil collectors. Each oil guide nozzle leads to a blind hole in the planetary bolt. A lubrication hole leads from the blind hole to the planetary bearing. In the oil collector disclosed in US 10 240670 B2, the oil guide nozzles also function as fastening elements because they are axially inserted into the lubrication hole. In the drive disclosed in DE 10 2013 206 880 B3, the oil collector nozzles, also designed as fastening elements, engage behind the bearing section of the planetary carrier. In another drive disclosed in DE 10 2020 102 241 B3, the passage of the oil collector rests against the planetary carrier in a substantially axially sealed manner. This eliminates the need for oil guide nozzles. Only short protrusions are formed on the oil collector, which axially protrude into the lubrication hole. Summary of the Invention

[0004] The purpose of this invention is to provide a transmission device that can be manufactured inexpensively and is easy to assemble.

[0005] This objective is achieved by the subject matter of claim 1.

[0006] According to the invention, each of the fastening elements has a platform formed on a channel of the oil collector in the axial direction on a side opposite to the transmission device or the support member, and the platform protrudes radially beyond the outer contour of the channel. On each platform, at least one protrusion rising axially on the platform and surface protrudes from the flat surface of the respective platform. An advantage of the invention is that the protrusion serves as an aid in positional orientation during the assembly of the oil collector onto the support member of the transmission device, and is thus configured for proper assembly positioning of both the oil guide nozzle for the oil inlet and the fastening element for the connecting hole. Additionally, if the protrusion is designed properly, it can also grip or guide the oil collector during assembly.

[0007] One embodiment of the invention is configured such that the respective surfaces of the corresponding protrusions, projecting axially, extend in an imaginary radial plane perpendicularly penetrated by the axis of rotation. The flat surfaces of all platforms may lie in a common imaginary radial plane, or the flat surfaces or their radial planes may be axially offset from each other. The advantage of this configuration is that these surfaces serve as reference surfaces, allowing the oil collector to be precisely aligned during assembly onto the support member, and facilitating accurate positioning of the oil collector relative to the support member or transmission mechanism.

[0008] Another embodiment of the invention provides that, in each case, one of the fastening elements protrudes axially from the corresponding platform on the side facing the support member—that is, the fastening element is preferably formed as a single piece with the platform. An advantage of the invention is that the radial spacing of the fastening elements does not necessarily depend on the radial range of the support plate or channel, but can extend radially beyond that range by means of a corresponding design of the platform. This design feature is advantageous because the radial spacing of the fastening elements, due to the corresponding design of the platform, does not depend on, or only partially depends on, the radial dimension of the support plate or channel. If necessary, the platform with the fastening elements can protrude radially beyond the outer contour of the oil collector. Thus, the platform forms a radial extension from which the fastening elements protrude. Therefore, the distance between the fastening points (fastening elements) of the oil collector can be adapted to the design of the support member by means of the platform dimensions, regardless of the actual location of the oil guide.

[0009] Another embodiment of the invention provides that the corresponding protrusions are designed as ribs connecting to the corresponding platforms and channels. On the one hand, the ribs allow for easy gripping during assembly, and on the other hand, the ribs reinforce the fastening elements or serve as reinforcements for connecting the fastening elements to the oil collector. The reinforcements are helpful, for example, when the fastening elements are pressed or snapped into the connecting holes with increased force for pressing or snapping connections.

[0010] One embodiment of the invention involves a releasable or non-releasable form-fit snap-fit ​​connection in or on a connection hole between the support member and the fastening element. The fastening element is designed, for example, as a snap hook or a tenon-like design with expansion, which is particularly easy to achieve when manufacturing oil collectors made of plastic. In the connection hole, a corresponding undercut is formed for hooking the snap hook or expansion tenon, or the hook or expansion element axially passes through the corresponding connection hole and hooks onto the wall or wall segment on the other side of the support member, thereby engaging the rear of the wall or wall segment.

[0011] One embodiment of the invention provides that the transmission has at least one planetary gear. The support member is preferably designed, for example, as a bearing flange and is part of the planetary carrier of the planetary gear. The planetary gear has planetary gears mounted on planetary bolts. The planetary bolts are received on one side of the bearing flange or within the bearing flange. Alternatively, the support member can be another functional element; for example, a clutch housing for a multi-plate clutch, or the support member can be designed as any other component.

[0012] Another embodiment of the invention provides that an oil inlet is formed in the planetary bolt. A corresponding oil guide nozzle, or one, several, or all of the oil guide nozzles in the oil collector engages in one of the oil holes in the planetary bolt, said oil hole typically extending axially in the planetary bolt and designed as a through hole or blind hole. A transverse hole leads from the corresponding oil hole to at least one planetary bearing of at least one planetary gear. Attached Figure Description

[0013] The invention will be explained in more detail below with reference to exemplary embodiments.

[0014] Figure 1 A transmission device 1 with a support component 2 and an oil collector 19 is shown.

[0015] Figure 2 The oil collector 19 is shown in the following position: in this position, the oil collector 19 is aligned in preparation with shaft 4, for example with... Figure 1 The shaft 4 of the transmission device 1 shown is assembled. Detailed Implementation

[0016] Figure 2 The oil collector 19 includes a support plate 6, a channel 7, an oil guide nozzle 22, and a fastening element 30. A platform 31 is formed integrally with the channel 7, which is made of plastic, and protrudes radially beyond the outer contour 23 of the channel, i.e., transversely to the axis of symmetry or rotation 8. At least one fastening element 30 protrudes axially from one side of the corresponding platform 31 and has a protrusion 29 protruding axially from a surface 32 on the other side of the platform 31. The corresponding protrusion 29 is designed in the form of a node plate and is integrally coupled to the channel 7 via its radial root 25 and integrally coupled to the surface 32 via its axial root 26. The fastening element 30 is a plug-in connector with a snap-fit ​​function and has snap-fit ​​lugs 27 for this purpose.

[0017] Figure 1 The transmission device shown is a planetary gear 15. The planetary gear 15 has a planetary carrier 3, and the support member 2 of the planetary gear is designed as a bearing flange. Planetary bolts 17 are installed in the planetary carrier 3. A planetary gear 16 is seated on each planetary bolt 17. Each planetary bolt 17 is provided with a blind hole 20, which forms an oil inlet 5. A transverse hole 21 leads from the corresponding blind hole 20 to a planetary bearing 18. The support plate 6 of the oil collector 19 rests axially on the end face 10 of the support member 2 and is inserted into the blind hole 20 together with the oil guide nozzle 22. The oil collector 19 is fastened to the support member 2 by means of a fastening element 30, such that the fastening element 30 passes axially through a connecting hole designed as a through hole 28 in the wall of the support member 2, and is axially or radially engaged on the side of the support member 2 opposite to the oil collector 19 by means of a snap-fit ​​lug 27.

[0018] List of reference numerals

[0019]

[0020]

Claims

1. A transmission device (1) having at least one oil collector (19), wherein, The transmission device (1) is provided with at least one support member (2) having a connection hole (28) and an oil inlet (5), and the oil collector (19) has at least one support plate (6) and a channel (7) extending from the support plate (6) and a rotation axis (8) aligned about the axial direction of the transmission device (1), wherein the oil collector (19) is also provided with an oil guide nozzle (22) and a fastening element (30), wherein in each case the oil guide nozzle (22) is axially inserted into one of the oil inlets (5), and wherein the oil collector (19) is held on the support member (2) by means of the fastening element (30), the fastening element being at least partially fixedly engaged with the connection hole (28) in each case. In one of the connecting holes, on the side opposite to the transmission device (1), each of the fastening elements (30) follows a platform (31) in the axial direction, the platform being constructed on the oil collector (19) and protruding from the oil collector (19) and having a flat surface (32), wherein on each of the platforms (31), at least one protrusion (29) in each case protrudes from the flat surface (32) of the corresponding platform (31) and axially protrudes beyond the platform (31) and beyond the surface (32), characterized in that the platform (31) protrudes radially from the oil collector (19) and radially beyond the outer contour (23) of the channel (7).

2. The transmission device (1) according to claim 1, characterized in that, The surface (32) extends in an imaginary radial plane that is perpendicularly penetrated by the axis of rotation (8).

3. The transmission device according to claim 2, characterized in that, All surfaces (32) extend in a common radial plane.

4. The transmission device (1) according to any one of the preceding claims, characterized in that, One of the fastening elements (30) protrudes axially from the corresponding platform (31) on the side facing the support member (2).

5. The transmission device (1) according to any one of claims 1-3, characterized in that, The corresponding protrusion (29) is designed as a rib (9) connecting the corresponding platform (31) and the channel (7).

6. The transmission device (1) according to any one of claims 1-3, characterized in that, A snap-fit ​​connection is achieved in or on the connection hole (28) between the support member (2) and the fastening element (30).

7. The transmission device (1) according to any one of claims 1-3, characterized in that, The transmission device (1) is at least one planetary gear (15) having at least one of the support members (2) formed on the planetary carrier (3), wherein in the planetary gear (15), the planetary gear (16) is rotatably mounted on the planetary bolt (17), and the oil collector (19) is fluidly connected to the planetary bolt (17).

8. The transmission device (1) according to claim 7, characterized in that, The oil inlet (5) is an orifice in which each of the oil guide nozzles (22) is inserted into one of the holes in the orifice, and in which each of the axially aligned holes leads from a corresponding transverse hole (21) to at least one planetary bearing (18) for at least one planetary gear (16).

9. The transmission device (1) according to claim 8, characterized in that, The oil inlet (5) is a blind hole (20) in the planetary bolt (17).

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