Electric machine

Abstract

The invention relates to an electric machine (1), comprising a housing (2) with a receiving space (3) and an HV terminal with a terminal housing (5), said HV terminal being mountable in the receiving space (3) along a mounting direction, wherein the housing (2) has a first guide structure (9) on an inner face (8) of the receiving space (3) and the terminal housing (5) has a second guide structure (11) on an outer face (10), wherein the first and second guide structures (9, 11), when moved relative to one another in a mounting direction (6), interact such that the HV terminal (4) is swung out relative to the mounting direction (6) in a first movement region (B) and is swung back relative to the mounting direction (6) in a second movement region (C) in such a manner that a fastening stub (12) of the terminal housing (5) is placed onto a retaining shoulder (14) of the housing (2).

Description

[0001] Electric machine

[0002] The present invention relates to an electrical machine comprising a housing with a receiving space and an HV terminal with a terminal housing that can be mounted in the receiving space along a mounting direction.

[0003] High-voltage terminals (hereinafter referred to as HV terminals) are typically used to supply power to an electrical machine, for example in a motor vehicle. For this purpose, the HV terminal can have a connection for each pole of the electrical machine. To supply power to the electrical machine, it is crucial that all connections of the HV terminal are precisely positioned relative to the respective electrical connections of the electrical machine. For this purpose, the HV terminal can be expediently mounted in a receiving space in the housing of the electrical machine. However, since the housing is usually a cast part with comparatively large manufacturing inaccuracies, i.e. with comparatively low dimensional accuracy, exact positioning of the HV terminal and thus the electrical connections of the HV terminal and the electrical machine relative to one another is problematic.

[0004] Furthermore, certain assembly tolerances must be observed for inserting the HV terminal into the housing's receiving space to ensure proper installation even if the HV terminal is slightly offset or twisted relative to the housing. However, these assembly tolerances can cause the HV terminal to tilt and / or jam during the assembly process or when inserted into the housing, which can lead to damage to the HV terminal and / or the housing.

[0005] A concept for compensating for the inaccurate positioning of a power electronics system relative to a stator, which is powered by these power electronics via contacts, is described in DE 10 2018 214 104 A1. The power electronics system comprises rigid contact rails, and the stator comprises a connecting device next to the stator windings. The connecting device, in turn, comprises a winding-side connecting area and a power electronics-side connecting area, the latter being pivotable relative to the winding-side connecting area. For example, copper contacts of the connecting device can be pivoted or bent to coincide with the rigid contact rails of the power electronics system.

[0006] In the prior art, pivotable electrical connectors that are larger than necessary ensure that the electrical connectors of the electrical machine can be electrically connected to the electrical connectors of the HV terminal, or rather, the power electronics. However, the most precise positioning of the HV terminal in a receiving space of the electrical machine's housing is not described.

[0007] It is therefore the object of the present invention to improve the assembly of an HV terminal in a receiving space of a housing of an electrical machine, in particular with regard to the positioning of the HV terminal and taking into account economic efficiency.

[0008] To achieve this object, the invention provides for the electrical machine of the type mentioned at the outset to have a first guide structure on an inner surface of the receiving space and a second guide structure on an outer surface of the housing, wherein the first and second guide structures interact during a movement relative to one another in the mounting direction in such a way that the HV terminal is pivoted out relative to the mounting direction in a first movement range and pivoted back relative to the mounting direction in a second movement range in such a way that a fastening stud of the terminal housing is placed on a holding shoulder of the housing.

[0009] The HV terminal can preferably be inserted into the receiving space of the housing with the fastening nozzle first along the mounting direction, wherein the mounting direction preferably runs axially, i.e. along an mounting axis. The first guide structure on the inner surface of the receiving space and the second guide structure on the outer surface of the terminal housing are designed according to the invention such that they touch upon axial insertion of the HV terminal into the receiving space along the mounting direction. Thus, during mounting, the HV terminal is pivoted out relative to the mounting direction or axis by the interaction of the first and second guide structures in the first movement range. In other words, pivoting out can be understood as the end of the HV terminal with the fastening nozzle moving away from the inner surface of the receiving space.By further moving the HV terminal along the mounting direction into the receiving space, the HV terminal is pivoted back relative to the mounting direction or axis by the interaction of the first and second guide structures in the second movement range such that the mounting stud rests on the retaining shoulder of the housing. In other words, pivoting back can be understood as the end of the HV terminal with the mounting stud moving back toward the inner surface of the receiving space.

[0010] By pivoting out, the mounting stud, which is used to attach the terminal housing to the housing of the electrical machine, can be spaced apart from the inner surface of the receiving space and the housing's retaining shoulder, preventing unwanted collision and / or jamming. By pivoting back, the mounting stud can be placed precisely on the housing's retaining shoulder.

[0011] The fact that the first guide structure of the housing and the second guide structure of the terminal housing slide against each other either continuously or in certain areas during assembly prevents the HV terminal from tilting. For example, if the terminal housing's mounting stud protrudes, pivoting the HV terminal out and back can prevent the mounting stud from colliding with the housing's retaining shoulder. With a suitable geometry of the first and second guide structures, the HV terminal can be pivoted out and back far enough during assembly in the receiving space to avoid unwanted collisions, despite existing assembly tolerances and deviations in the dimensional accuracy of the housing.This is particularly advantageous for housings of electrical machines, which are usually cast from aluminum, since these can have comparatively low dimensional accuracy without post-machining of the contact surfaces due to the casting process. The first and second guide structures can each be understood as a wedge, ramp, or incline. If the HV terminal is moved relative to the housing and axially in the assembly direction during assembly in the receiving space, the first and second guide structures can collide at a certain point along the assembly direction due to their ramp-like or trapezoidal geometry. Due to the geometry of the first and second guide structures, when the two guide structures interact, the purely axial movement of the HV terminal along the assembly direction can be redirected into an inclined movement in a position-fixed housing.

[0012] In a preferred embodiment, the first guide structure and the second guide structure each have at least one cooperating first bevel or curve for pivoting the HV terminal in the first movement range. It is preferred that the first and second guide structures each have a smooth surface without edges or corners to enable the guide structures to slide against each other as smoothly as possible. Depending on how quickly and / or strongly the HV terminal is to pivot during installation in the receiving space, a bevel with a greater or lesser gradient or a correspondingly large or small curve can be provided on the first and / or second guide structure.

[0013] Depending on how far the HV terminal is to pivot relative to the mounting direction during installation in the housing's receiving space, the maximum height HG by which the first guide structure protrudes from the inner surface of the receiving space and / or the maximum height HT by which the second guide structure protrudes from the outer surface of the terminal housing can be correspondingly large or small. If a slight pivoting of the HV terminal is sufficient, the first and second guide structures can be designed, for example, as flat ramps with a low height HG and HT, respectively. The greater the heights HG and HT of the first and second guide structures, the greater the HV terminal can pivot relative to the mounting axis during installation in the housing's receiving space.

[0014] According to the invention, it is further particularly preferred that the first guide structure and the second guide structure each have at least one cooperating bevel or curve for pivoting the HV terminal back in the second movement range. Analogous to the previously described bevel or curve in the first movement range, a bevel or curve is advantageously also provided on the first and second guide structure in the second movement range, which here, however, causes the HV terminal to pivot back towards the mounting direction or axis. In addition to pivoting back, the second bevel or curve in the second movement range can advantageously cause a defined pivoting back towards the mounting axis, whereby a sudden falling back or abrupt movement of the HV terminal can be avoided.This allows the HV terminal to be guided evenly along the housing of the electrical machine throughout the entire assembly process, especially in the second movement range, without any sudden movement of the HV terminal. This prevents damage to the HV terminal and / or the housing of the electrical machine.

[0015] The geometry of the first and second guide structures can differ from one another. For example, one guide structure can protrude from the respective outer or inner surface, or have a steeper slope or a greater curve than the other guide structure. A different geometry of the two guide structures can lead to manufacturing advantages. For example, the larger or heavier guide structure can be provided on the housing of the electrical machine or on the terminal housing, depending on the desired design.

[0016] According to the invention, it is particularly advantageous if the second guide structure does not touch the inner surface of the receiving space and / or the first guide structure in a final assembly position in which the fastening nozzle rests on the retaining shoulder. In the final assembly position, the HV terminal is in the desired position and orientation in the receiving space of the housing of the electrical machine. In the final assembly position, the first guide structure and the second guide structure can be moved completely past each other in the assembly direction. The guide structures can be designed such that they no longer touch each other, and therefore no longer interact, when the HV terminal is positioned in the receiving space in the final assembly position. At the same time, the receiving space and the second guide structure of the terminal housing can be designed such that they no longer touch each other when the HV terminal is positioned in the receiving space in the final assembly position.This can advantageously ensure that the fastening stud of the terminal housing rests flat on the retaining shoulder of the housing.

[0017] A tilted position of the mounting stud relative to the retaining shoulder can thus be avoided. The position and alignment of the HV terminal in the receiving space can thus be predetermined by the contact between the mounting stud and the retaining shoulder. Due to the relevance of the mounting stud and the retaining shoulder for the positioning of the HV terminal in the receiving space of the housing, a respective contact surface of the mounting stud and the retaining shoulder, which contact each other in the final assembly position, can be highly accurate and thus provided with suitable tolerances and / or reworked. However, unmachined contact surfaces are preferably sufficient to achieve a defined position and alignment of the HV terminal in the receiving space of the housing and at the same time save costs for rework and / or high dimensional accuracy during production.

[0018] According to the invention, it is particularly preferred that the fastening socket has an opening for a fastening means and the housing has a receiving structure for receiving the fastening means on the holding shoulder, wherein the at least one opening and the receiving structure coincide in the final assembly position. The fastening means can firmly connect the fastening socket, and thus the HV terminal, to the housing. The opening can be, for example, a bore, in particular a bore with an internal thread. Analogously, the receiving structure can also be a bore with an internal thread, so that the fastening socket can be fastened to the housing with a screw as the fastening means. Alternatively, the fastening means can be a bolt or a pin. The opening and / or the receiving structure do not have to have an internal thread.In order to make the connection of the HV terminal to the housing as simple as possible, the opening and the receiving structure preferably coincide in the final assembly position in such a way that they extend along a common fastening axis along which the fastening means can be inserted into the opening and the receiving structure.

[0019] In an alternative design, the mounting stud can also have multiple openings, whereby the retaining shoulder can also have multiple receiving structures. Practically speaking, the number of receiving structures in the retaining shoulder corresponds to the number of openings in the mounting stud. Accordingly, the mounting stud can be secured to the retaining shoulder using several identical or different fastening elements.

[0020] In the final assembly position, the HV terminal is preferably fixed to the housing with at least one fastening means, wherein a fastening means, in particular a screw, is provided for fixing in each opening of the fastening nozzle and the receiving structure coinciding with the fastening axis of the respective opening.

[0021] In one embodiment according to the invention, the HV terminal has a seal and the receiving space of the housing has a sealing surface, wherein the seal seals the receiving space to the outside in the final assembly position and the HV terminal rests against the sealing surface to fix it. The seal can seal the receiving space of the housing to the outside when the HV terminal is positioned in the receiving space in the final assembly position. This is particularly advantageous because the seal can prevent liquid from entering the receiving space. In this way, damage that could be caused by liquid ingress, in particular to the live parts of the HV terminal or the electrical machine, can be effectively prevented. The seal can preferably be a rubber seal, in particular an O-ring. Several sealing rings can also be provided, which are arranged one behind the other, in particular in the assembly direction.In general, however, any common seal can be used as a seal, ensuring that the receiving space of the HV terminal is sealed fluid-tight to the outside in the final assembly position. The sealing surface is preferably a particularly smooth surface without grooves or edges, so that a seal, especially a rubber seal, is not damaged when it is moved along the sealing surface. The sealing surface can therefore be a reworked surface with a high surface quality.

[0022] When the HV terminal is positioned in the final assembly position, the seal, in particular the O-ring, is preferably compressed between the HV terminal and the sealing surface of the housing, so that the receiving space is sealed fluid-tight to the outside. The seal between the HV terminal and the housing of the electrical machine can create a defined frictional contact, which enables improved fixation of the HV terminal in the receiving space. In preferred embodiments of the electrical machine according to the invention, the HV terminal is fixed in the receiving space of the housing only by the fastening means and the seal.

[0023] Advantageously, the HV terminal is centered or precisely aligned in the receiving space in the final assembly position by the contact between the seal and the sealing surface of the housing. The position and alignment of the HV terminal in the receiving space in the final assembly position is preferably determined by the seal and / or sealing surface as well as the contact between the mounting stud and the retaining shoulder.

[0024] In a specific embodiment of the electrical machine according to the invention, the sealing surface represents an opening in the receiving space. In the final assembly position, the HV terminal is centered in the opening by the seal, thus being fixed in both spatial directions perpendicular to the assembly direction. Additionally, the HV terminal is fixed by the fastening means in the opening and the receiving structure along the assembly direction, i.e., the third spatial direction. The HV terminal is thus fixed in the receiving space in all three spatial directions.

[0025] According to the invention, it is also particularly preferred that the first guide structure and / or the second guide structure are produced by casting, in particular injection molding. This enables particularly economical production of the first and / or second guide structure. As already mentioned at the beginning, the housings of common electrical machines are cast from aluminum, which is why it is particularly preferred if the first guide structure is also produced by casting, in particular injection molding. HV terminals also usually have a terminal housing, which is also produced from plastic by casting, in particular injection molding. Therefore, it is analogously preferred that the second guide structure of the terminal housing is also produced by casting, in particular injection molding.

[0026] It is particularly advantageous if the first guide structure and the housing and / or the second guide structure and the terminal housing are cast in a single manufacturing step. Thus, no further manufacturing steps or tools are required to produce the first and / or second guide structure. The first and / or second guide structure can be cast together with the rest of the housing and / or the terminal housing in a single molding process using an adapted cavity in the mold of the housing and / or the terminal housing.

[0027] Preferably, the terminal housing and the second guide structure are made of plastic by injection molding. The housing and the first guide structure are preferably made of metal, in particular aluminum, by injection molding.

[0028] In an alternative embodiment, the first guide structure and / or the second guide structure can be fixed to the housing and / or terminal housing as separate add-on parts by means of connecting means, in particular screws or adhesives. If a guide structure cannot be produced with the housing or the terminal housing or can only be produced with difficulty in a common manufacturing step, it can be fixed to the housing or the terminal housing as an additional component by means of one or more connecting means. The fixation of the guide structure must then be designed to be correspondingly stable in order to prevent movement of the guide structure relative to the housing or the terminal housing to which the guide structure is fixed. An electrical machine according to the invention with all of the features and advantages described above can be used in particular in a motor vehicle. In this case, the electrical machine can preferably serve to drive the motor vehicle.The aforementioned advantages then also apply to the motor vehicle with the electric machine according to the invention.

[0029] The invention is explained below using exemplary embodiments with reference to the drawings. The drawings are schematic representations and show:

[0030] Figure 1 is a schematic sectional view of an embodiment of an electrical machine according to the invention with an HV terminal, in a first assembly position;

[0031] Figure 2 is a schematic representation of the electrical machine according to the invention from Figure 1, the HV terminal in a pivoted-out, second mounting position;

[0032] Figure 3 is a schematic representation of the electrical machine according to the invention from Figure 1, the HV terminal in a maximum pivoted, third mounting position;

[0033] Figure 4 is a schematic representation of the electrical machine according to the invention from Figure 1 with the HV terminal in a pivoted-back, fourth assembly position;

[0034] Figure 5 is a schematic representation of the electrical machine according to the invention from Figure 1 with the HV terminal in a final assembly position; and

[0035] Figure 6 shows a schematic detailed view of the first and second guide structures of the electrical machine according to the invention from Figure 5 in the final assembly position. An exemplary embodiment of an electrical machine according to the invention with a housing having a receiving space for accommodating an HV terminal is described schematically with reference to the following Figures 1 to 5. Figures 1 to 5 show the installation of the HV terminal in the housing of the electrical machine and each schematically show the position and orientation of the HV terminal at various times during the assembly process.

[0036] Figure 1 shows an embodiment of an electrical machine 1 according to the invention. The electrical machine 1 comprises a housing 2 with a receiving space 3 and an HV terminal 4 with a terminal housing 5, which can be inserted axially into the receiving space 3 along an assembly direction 6 for fastening in the housing 2. The HV terminal 4 serves to supply current to the electrical machine 1 and has connections 7 for this purpose.

[0037] For assembly, the HV terminal 4 is inserted axially along the assembly direction 6 (from left to right in the figure) into the receiving space 3. The housing 2 also has a first guide structure 9 on an inner surface 8. In addition, the terminal housing 5 has a second guide structure 11 on an outer surface 10. At the time of assembly shown, the HV terminal 4 is inserted far enough along the assembly direction 6 into the interior 3 that the first guide structure 9 of the housing 2 and the second guide structure 11 of the terminal housing 5 touch each other. Both guide structures 9, 11 are designed such that they touch each other when the HV terminal 4 is moved axially into the receiving space 3 along the assembly direction 6, as soon as the HV terminal 4 has reached a certain position along the assembly direction 6. The housing 2, and thus the first guide structure 9, are fixed in position. Only the HV terminal 4 is movable along the assembly direction 6.

[0038] For fixing to the housing 2, the HV terminal 4 has a fastening socket 12 on the terminal housing 5, in which an opening 13 is provided for a fastening means. In addition, the housing 2 has a holding shoulder 14 with a receiving structure 15, which can receive the fastening means guided through the opening 13. In addition, a seal 16 is provided on the HV terminal 4, which, in a final assembly position (see Figure 5), cooperates with a sealing surface 17 of the housing 2 to seal the receiving space 3 to the outside in a liquid-tight manner. In the example shown, the seal 16 is an O-ring. However, all common sealing means are conceivable. For example, a sealing lip could alternatively be provided on the housing 2. The use of multiple seals 16 is also conceivable.

[0039] The terminal housing 5 is manufactured from plastic by injection molding. Depending on the application, all common plastics are conceivable. For example, the terminal housing 5 can be made of ABS, PC, or PS. In the example shown, the second guide structure 11 is an integral part of the terminal housing 5 and is manufactured with it in a common casting process. The housing 2 of the electrical machine 1 is also a cast part. The housing 2 is made of an aluminum alloy, whereby the first guide structure 9 is also an integral part of the housing 2 and is manufactured with it in a common casting process.

[0040] Therefore, no additional manufacturing steps or tools were required to create the guide structures 9 and 11, which has a positive effect on manufacturing costs and overall economic efficiency.

[0041] In a variant not shown, the guide structures 9, 11 can be provided as separate attachments which are fixed to the housing 2 or to the terminal housing 5 by means of connecting means, for example screws or adhesive.

[0042] The following describes in detail the assembly of the HV terminal 4 and the interaction of the first guide structure 9 and the second guide structure 11. For this purpose, a mounting axis 18 is shown in Figures 1 to 5, which describes the course of the mounting direction 6, i.e. the guided movement of the HV terminal 4. A longitudinal axis 19 is also shown, which describes the resulting alignment of the HV terminal 4. The mounting axis 18 and the longitudinal axis 19 meet at a common reference point 20. The axes 18, 19 and the common reference point 20 can be used to better visualize the alignment of the HV terminal 4 relative to the housing 2. The first guide structure 9 and the second guide structure 11 are designed such that they touch each other during purely axial movement of the HV terminal 4 along the mounting direction 6 or axis 18, as soon as the HV terminal 4 has reached a certain position along the mounting direction 6.For this purpose, the first guide structure 9 has a height HG by which it protrudes from the inner surface 8 of the housing 2 (see the detailed view in Figure 6). Furthermore, the second guide structure 11 of the terminal housing 5 also has a height HT by which it protrudes from the outer surface 10 of the terminal housing 5. The sum of the heights HT, HG of both guide structures is greater than the distance G between the outer surface 10 of the terminal housing 5 and the inner surface 8 of the housing 2 (see the detailed view in Figure 6).

[0043] Figure 1 shows the assembly point at which the first guide structure 9 of the housing 2 and the second guide structure 11 of the terminal housing 5 first touch each other. The first guide structure 9 and the second guide structure 11 touch each other in a first movement range B (see Figure 6). In the first movement range B, the two guide structures 9, 11 have first bevels with rounded portions in order to cause the HV terminal 4 to pivot out relative to the assembly direction 6 upon further movement of the HV terminal 4 along the assembly direction 6.

[0044] In Figure 2, the HV terminal 4 is moved further to the right along the mounting direction 6, i.e., into the interior of the receiving space 3. Due to the geometry of the guide structures 9, 11 and the mutual contact, i.e., the interaction, of the guide structures 9, 11, the HV terminal 4 is pivoted relative to the mounting direction 6 and the mounting axis 18. This is evident from the fact that the longitudinal axis 19 of the HV terminal 4 intersects the mounting axis 18 at the reference point 20 and is pivoted by the angle w1 relative to the mounting axis 18. In Figure 2, the first guide structure 9 and the second guide structure 11 continue to touch in the first movement range B (see the detailed view in Figure 6).

[0045] In Figure 3, the HV terminal 4 is pushed far enough into the receiving space 3 that the first guide structure 9 and the second guide structure 11 touch each other at the points that protrude furthest from the respective outer surface 10 of the terminal housing 5 or inner surface 8 of the housing 2. The first guide structure 9 and the second guide structure 11 touch each other in the area between the first movement range B and the second movement range (see the detailed view in Figure 6). In this position along the mounting axis 18, the HV terminal 4 is pivoted to the maximum with respect to the mounting direction 6. This is clearly evident from the angle w2 between the mounting axis 18 and the pivoted longitudinal axis 19, which is greater than the angle w1 in Figure 2. With regard to the entire assembly process, the HV terminal 4 is pivoted to the maximum with respect to the mounting direction 6 in the position shown.The mounting stud 12 is spaced apart from the inner surface 8 of the housing 2 by a maximum value. Thus, upon further insertion of the HV terminal 4, a collision between the mounting stud 12 and the retaining shoulder 14 can be avoided, since the mounting stud 12 is further away from the inner surface 8 than the retaining shoulder 14 protrudes from it.

[0046] If the HV terminal 4 is moved further into the receiving space 3, the first guide structure 9 and the second guide structure 11 touch each other in the second movement area C (see the detailed view in Figure 6), in which the guide structures 9, 11 also have bevels and curves. This assembly position is shown in Figure 4.

[0047] In the second movement range C, the second guide structure 11 of the exemplary embodiment has a slope, while the first guide structure 9 is provided with curves. The height by which the guide structures 9, 11 protrude from the respective inner surface 8 or outer surface 10 decreases in the second movement range C, which is why the HV terminal is pivoted back towards the mounting direction 6. As can be seen, the angle w3, by which the longitudinal axis 19 of the HV terminal 4 is now pivoted relative to the mounting axis 18 and the mounting direction 6, is smaller in Figure 4 than the angle w2 in Figure 3. The fastening nozzle 12 protrudes slightly over the holding shoulder 14 in the mounting direction 6 without touching it.

[0048] In Figure 5, which shows the HV terminal 4 in the final assembly position in the receiving space 3 of the housing 2, the HV terminal 4 is shifted to the right along the assembly direction 6 until the opening 13 of the fastening stud 12 coincides with the receiving structure 15 of the holding shoulder 14. The opening 13 and the receiving structure 15 thus have a common assembly axis 21, along which a fastening means 22, in this case a screw 23 with a washer 24, is inserted to fix the HV terminal 4 to the housing 2. The fastening stud 12 rests with a contact surface 26 against a contact surface 25 of the housing. The contact surfaces 25, 26 are not reworked in this case. However, they can be reworked to achieve a higher surface quality.

[0049] The HV terminal 4 is positioned by the seal 16 on the sealing surface 17 of the housing 2. Thanks to the seal 16 and the screw 23, the HV terminal 4 is positioned with sufficient precision in the receiving space 3 even without remachining the contact surfaces 25, 26. The sealing surface 17, on the other hand, is remachined to provide a sufficiently good surface quality so that the seal 16 is not damaged by contact with the sealing surface 17. As can be seen in Figure 5, the seal 16, in this case an O-ring, is compressed between the HV terminal 4 and the sealing surface 17, whereby on the one hand the receiving space 3 is sealed liquid-tight to the outside and on the other hand there is a frictional connection that fixes the HV terminal 4 in the housing 2.

[0050] In the final assembly position shown in Figure 5, the second guide structure 11 touches neither the inner surface 8 of the receiving space 3 nor the first guide structure 9. This is also evident from the detailed view in Figure 6. The HV terminal 4 is therefore fixed to the sealing surface 17 of the housing 2 by the seal 16, whereby tilting of the HV terminal 4 is prevented by the mounting stud 12 resting on the retaining shoulder 14. The screw 23, which acts as fastening means 22 to fix the mounting stud 12 to the retaining shoulder 14, additionally blocks the movement of the HV terminal 4 along the assembly direction 6. The HV terminal 4 is therefore only fixed in the receiving space 3 of the housing 2 by the seal 16 and the screw 23.

[0051] In other embodiments, several seals 16 arranged one behind the other can also be provided on the HV terminal 4, which seals 16 rest against the sealing surface 17 of the housing in the final assembly position (Figure 5). Alternatively, several fastening means 22, for example in the form of bolts or pins, can also be provided to fix the fastening piece 12 to the retaining shoulder 14 of the housing 2. In this case, the size and / or number of the openings 13 should preferably correspond to the size and / or number of the receiving structures 15 and the size and / or number of the fastening means 22.

[0052] List of reference symbols

[0053] Electrical machine housing

[0054] Receiving space HV terminal Terminal housing Mounting direction Connection Inner surface First guide structure

[0055] 10 Exterior area

[0056] 11 second management structure

[0057] 12 mounting brackets

[0058] 13 Breakthrough

[0059] 14 Holding step

[0060] 15 Recording structure

[0061] 16 Seal

[0062] 17 Sealing surface

[0063] 18 Mounting axis

[0064] 19 Longitudinal axis

[0065] 20 Reference point

[0066] 21 Mounting axis

[0067] 22 fasteners

[0068] 23 Screw

[0069] 24 Washer

[0070] 25 contact surface

[0071] 26 Contact surface

[0072] B First range of motion

[0073] C Second range of motion

[0074] HG height

[0075] HT height w1 angle w2 angle w3 angle

Claims

Patent claims 1. Electrical machine (1), comprising a housing (2) with a receiving space (3) and an HV terminal (4) which can be mounted along a mounting direction (6) in the receiving space (3) and has a terminal housing (5), wherein the housing (2) has a first guide structure (9) on an inner surface (8) of the receiving space (3) and the terminal housing (5) has a second guide structure (11) on an outer surface (10), wherein the first and second guide structures (9, 11) interact during a movement relative to one another in the assembly direction (6) in such a way that the HV terminal (4) is pivoted out in a first movement range (B) relative to the assembly direction (6) and is pivoted back in a second movement range (C) relative to the assembly direction (6) in such a way that a fastening nozzle (12) of the terminal housing (5) is placed on a holding shoulder (14) of the housing (2).

2. Electrical machine (1) according to claim 1, characterized in that the first guide structure (9) and the second guide structure (11) for pivoting the HV terminal (4) in the first movement range (B) each have at least one cooperating first bevel or curve.

3. Electrical machine (1) according to claim 2, characterized in that the first guide structure (9) and the second guide structure (11) for pivoting back the HV terminal (4) in the second movement range (C) each have at least one cooperating second bevel or curve.

4. Electrical machine (1) according to one of the preceding claims, characterized in that the second guide structure (11) surrounds the inner surface (8) of the receiving space (3) and / or the first guide structure (9) in a final assembly position in which the fastening nozzle (12) rests on the holding shoulder (14).

5. Electrical machine (1) according to one of the preceding claims, characterized in that the fastening stud (12) has an opening (13) for a fastening means (22, 23) and the housing (2) has a receiving structure (15) for receiving the fastening means (22, 23) on the holding shoulder (14), wherein the at least one opening (13) and the receiving structure (15) coincide in the final assembly position.

6. Electrical machine (1) according to one of the preceding claims, characterized in that the HV terminal (4) has a seal (16) and the receiving space (3) of the housing (2) has a sealing surface (17), wherein the seal (16) in the final assembly position seals the receiving space (3) to the outside and the HV terminal (4) rests against the sealing surface (17) in a fixing manner.

7. Electrical machine (1) according to one of the preceding claims, characterized in that the first guide structure (9) and / or the second guide structure (11) are produced by casting, in particular injection molding.

8. Electrical machine (1) according to claim 7, characterized in that the first guide structure (9) and the housing (2) and / or the second guide structure (11) and the terminal housing (5) are cast in a common manufacturing step.

9. Electrical machine (1) according to one of claims 1 to 7, characterized in that the first guide structure (9) and / or the second guide structure (11) are fixed as add-on parts by connecting means, in particular screws or adhesives, to the housing (2) and / or terminal housing (5).

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