Drive, in particular an inverter motor, having a junction box

Abstract

The invention relates to a drive, in particular an inverter motor, comprising a junction box, wherein the junction box has a lower part having an opening, wherein the opening is covered by an upper part of the junction box and / or a panel, wherein cooling fins are formed and / or provided on the upper part, which protrude on the upper part on the side of the upper part facing away from the lower part, wherein sockets spaced apart from one another are accommodated in the upper part, into which a respective angled plug connector is inserted, wherein a respective cable connected to a respective angled plug connector protrudes and / or passes through a respective intermediate space arranged between two respective adjacent cooling fins.

Description

[0001] Drive, in particular inverter motor, with a terminal box

[0002] Description:

[0003] The invention relates to a drive, in particular an inverter motor, with a terminal box.

[0004] It is generally known that a drive has a junction box into which an electrical supply cable leads and which includes terminal blocks, in particular for connecting the supply cable, so that the drive can be electrically supplied.

[0005] From DE 102023211 431 A1 an electric motor for a motor vehicle is known.

[0006] The invention is therefore based on the objective of designing a drive that is as compact and safe as possible in operation.

[0007] According to the invention, the problem is solved in the drive according to the features specified in claim 1.

[0008] Key features of the invention for the drive are that the drive, in particular the inverter motor, is equipped with a terminal box,

[0009] wherein the junction box has a lower part with an opening,

[0010] where the opening is covered by a top part of the junction box and / or a cover plate,

[0011] wherein cooling fins are formed and / or created on the upper part, which protrude from the upper part on the side of the upper part facing away from the lower part,

[0012] wherein the upper part contains spaced-apart sockets, into each of which an angled connector is inserted,

[0013] ISI \ EIDOPAT 19.02.2026 wherein a respective cable connected to a respective angled connector protrudes and / or passes through a respective gap arranged between two adjacent cooling fins.

[0014] An advantage of this design is that the electrical supply cable provides power to the drive, particularly the stator winding of the electric motor. For this purpose, the electrical cable is connected to an angled connector, which is plugged into a socket. The drive, and especially the stator winding of the electric motor, can be supplied with power from the socket's terminals located in the terminal box. The cables are protected by the internal routing of the cables. Importantly, the angled connectors and the cables themselves do not require any additional space in the transverse direction to the rotor's axis of rotation. Furthermore, the terminal box accommodates heat-generating power electronics, which can be dissipated to the surrounding environment via cooling fins.

[0015] In an advantageous embodiment, the lower part is formed or attached to a stator housing of an electric motor of the drive,

[0016] The stator housing radially surrounds and / or encloses a rotatably arranged rotor of the electric motor. An advantage of this design is that the terminal box, consisting of the lower and upper parts and the cover plate, can be located directly on the electric motor. This allows for the most compact installation space possible for the drive unit.

[0017] In an advantageous embodiment, the maximum distance of each cooling fin from the lower part is smaller than the maximum distance of the section of the respective cable located in the space between the fins and the lower part. It is advantageous that the cable does not protrude from the upper part but lies within the area enclosed by a surface of the upper part. Thus, the cable is protected and no additional space is required in the direction away from the lower part.

[0018] In an advantageous embodiment, the rotor's axis of rotation is aligned parallel to a plane encompassing a contact surface between the upper and lower parts. This design offers the advantage of simplified manufacturing. In another advantageous embodiment, the area covered by the upper part in the direction opposite the lower part includes the area covered by the respective cable in that direction, particularly the area covered by the cable. This design offers the advantage of protecting the cable.

[0019] In an advantageous embodiment, the cooling fins extend obliquely in the direction relative to the rotor's axis of rotation; in particular, they exhibit an angle between 0° and 90°, and especially between 10° and 80°. It is advantageous that the cables are protected as they are routed from a first side edge to the next adjacent side edge, since the cooling fins extend from the first side edge to the next adjacent side edge.

[0020] In an advantageous design, the cooling fins run neither perpendicular nor parallel to the rotor's axis of rotation. This design is advantageous because it allows for the cables to be routed laterally.

[0021] In an advantageous embodiment, the end regions of the cooling fins, located furthest from the lower part, lie in a plane that is aligned parallel to the rotor's axis of rotation. This design offers the advantage of simplified manufacturing.

[0022] In an advantageous embodiment, each of the cooling fins is shaped and / or extends in such a way that, during movement at a constant speed along the cooling fin, the rate of decrease in the distance to the nearest side edge increases monotonically or even strictly monotonically. It is advantageous that the cooling fins are curved towards the side edge.

[0023] In an advantageous embodiment, the centers of gravity of the connector components are arranged along a straight line, particularly along a straight edge. It is advantageous that the cables are arranged parallel to each other.

[0024] In an advantageous embodiment, the product of the distance between the centers of gravity of two nearest angled connectors, measured along the line and / or parallel to a side edge, and the sine of the minimum angle between the line or this side edge and the direction of travel of the respective cooling fin, equals the distance between the respective cooling fin and its nearest adjacent cooling fin. It is advantageous that the distances between the cables are uniform. In an advantageous embodiment, the area covered by the upper part in the direction away from the lower part includes the area covered by the respective angled connector in this direction, particularly the area itself. It is advantageous that the angled connectors do not protrude beyond the cooling fins, thus eliminating the need for additional installation space.

[0025] In particular, true enclosing here means that there is a distance to the edge, especially a distance from the angled connector to the end of the cooling fins.

[0026] In an advantageous embodiment, the area covered by the cooling fins in the direction away from the lower part includes the area covered by the respective angled connector in this direction, particularly in the case of a true angled connector. It is advantageous that the angled connectors do not protrude beyond the cooling fins, thus resulting in a compact installation space.

[0027] In an advantageous embodiment, the actuation direction of the plug connection formed by the respective angled connector and the respective socket part is oriented perpendicular to the rotor's axis of rotation. It is advantageous that, although the insertion direction of the respective plug connection is perpendicular to the rotor's axis of rotation, the cable exiting the angled connector is oriented parallel to this axis.

[0028] In an advantageous embodiment, the cable connected to each angled connector exits the connector in a direction parallel to the rotor's axis of rotation. This is advantageous because the cable does not protrude beyond the cooling fins, thus eliminating the need for additional installation space and allowing the cable to exit the upper part between the cooling fins.

[0029] Further advantages arise from the dependent claims. The invention is not limited to the combination of features of the claims. For those skilled in the art, further meaningful combinations of claims and / or individual claim features and / or features of the description and / or the figures will become apparent, in particular from the problem statement and / or the problem arising from a comparison with the prior art. The invention will now be explained in more detail with reference to a schematic diagram:

[0030] Figure 1 shows an inverter motor according to the invention in an oblique view.

[0031] Figure 2 shows a top view of the inverter motor.

[0032] As shown in the figures, the inverter motor has a terminal box which has a lower part attached to or molded onto the stator housing of the electric motor of the inverter motor.

[0033] The lower part is open on its side facing away from the stator housing, with the opening thus created being covered by an aperture 1 and an upper part 9.

[0034] Preferably, the aperture 1 has a protruding support area on which an edge area of ​​the upper part 9 rests and / or which engages behind one or the edge area of ​​the upper part 9.

[0035] The upper part 9 is pressed against the lower part and the contact area of ​​the aperture 1 by screws which are screwed into threaded holes of the lower part 9.

[0036] The upper part 9 has protruding cooling fins 7 on its side facing away from the stator housing, which are aligned parallel neither perpendicular to the axis of rotation of the rotor nor perpendicular to the transverse direction, i.e. the direction perpendicular to the axis of rotation of the rotor.

[0037] These cooling fins 7 extend in a direction that forms an angle between 30° and 60° to the axis of rotation of the electric motor's rotor. Thus, the cooling fins 7 extend parallel to each other, while remaining spaced apart.

[0038] The cooling fins 7 are therefore neither parallel to the axis of rotation of the rotor shaft nor perpendicular, in particular transversely, to the axis of rotation of the rotor shaft. Each of the cooling fins 7 extends from one respective first side edge to another side edge of the upper part 9.

[0039] Preferably, the side edges of the upper part 9 form a rectangle.

[0040] Each of the cooling fins 7 extends in such a way that, when moving at a constant speed along the cooling fin, the decrease in speed towards the nearest side edge of the distance increases monotonically.

[0041] Thus, the cooling fins 7 enter the side edge of the upper part 9 essentially almost perpendicularly, even though the cooling fins 7 run at an angle between 0° and 90° to the side edge before the opening area.

[0042] The upper part incorporates spaced-apart sockets into which angled connectors 5 are inserted. This allows cables 6 to be routed in the spaces defined by the cooling fins 7. In this way, the cables 6 can be arranged in a protected manner.

[0043] Furthermore, the angled connectors 5 do not extend beyond the cooling fins 7 in the direction away from the stator housing of the electric motor. Therefore, the required installation space is defined by the cooling fins 7 and not by the angled connectors 5.

[0044] The angled connectors 5 are inserted into the sockets in such a way that the cables 7 leading out of the angled connectors 5 extend parallel to the axis of rotation of the rotor of the electric motor, especially in the areas between the cooling fins 7.

[0045] The product of the distance between two nearest angle connectors 5, measured parallel to a side edge, and the sine of the minimum angle between this side edge and the direction of travel of the respective cooling fin 7, equals the distance between the respective cooling fin 7 and a cooling fin 7 that is nearest to it.

[0046] The cover 1 has a first recess through which a connector part 2 protrudes, which is mounted on a circuit board that is received and secured in the upper part. In a further recess of the cover 1, designed as a threaded hole, a sealing screw 3 is screwed in, which covers a data interface designed as a connector part.

[0047] A socket part 4 protrudes through a third recess in the cover 1. This allows for the looping through of a power supply by feeding an electrical supply line into the socket part 4, looping it through the terminal box, and leading it out at the connector part 2.

[0048] In further embodiments according to the invention, the aperture 1 is made of plastic instead of metal. Reference numeral list

[0049] 1 aperture

[0050] 2 connector part

[0051] 3 locking screws

[0052] 4 socket part

[0053] 5 angled connectors

[0054] 6 cables

[0055] 7 cooling fins

[0056] 8 Lower part

Claims

Patent claims:

1. Drive, in particular inverter motor, with a terminal box, wherein the junction box has a lower part with an opening, where the opening is covered by a top part of the junction box and / or a cover plate, characterized by the fact that Cooling fins are formed and / or shaped on the upper part, which protrude from the upper part on the side of the upper part facing away from the lower part, wherein the upper part contains spaced-apart sockets, into each of which an angled connector is inserted, wherein a respective cable connected to a respective angled connector projects through and / or passes through a respective gap arranged between two adjacent cooling fins.

2. Drive according to claim 1, characterized by the fact that the lower part is formed or attached to a stator housing of an electric motor of the drive, wherein the stator housing radially surrounds and / or encloses a rotatably arranged rotor of the electric motor.

3. Drive according to one of the preceding claims, characterized by the fact that the maximum distance of the respective cooling fin from the base is smaller than the maximum distance of the area of ​​the respective cable arranged in the space from the base.

4. Drive according to one of the preceding claims, characterized by the fact that the axis of rotation of the rotor is aligned parallel to a plane encompassing a contact surface of the upper part with the lower part.

5. Drive according to one of the preceding claims, characterized by the fact that the area covered by the upper part in the direction away from the lower part includes the area covered by the respective cable in this direction, in particular truly includes.

6. Drive according to one of the preceding claims, characterized by the fact that the cooling fins run diagonally in the direction related to the axis of rotation of the rotor, in particular having an angle between 0° and 90°, especially between 10° and 80°.

7. Drive according to one of the preceding claims, characterized by the fact that The cooling fins are neither perpendicular nor parallel to the rotor's axis of rotation.

8. Drive according to one of the preceding claims, characterized by the fact that The end areas of the cooling fins, which are located furthest from the lower part, lie in a plane that is aligned parallel to the axis of rotation of the rotor.

9. Drive according to one of the preceding claims, characterized by the fact that Each of the cooling fins is shaped and / or extends in such a way that, when moving at a constant speed along the cooling fin, the rate of decrease of the distance to the nearest side edge increases monotonically or even strictly monotonically.

10. Drive according to one of the preceding claims, characterized by the fact that the centers of gravity of the connector parts are arranged along a straight line, in particular along a straight line.

11. Drive according to one of the preceding claims, characterized by the fact that the product of the distance between the centers of gravity of two nearest angle connectors, measured along the line and / or parallel to a side edge, and the sine of the minimum angle between the line or this side edge and the direction of the respective cooling fin, equals the distance between the respective cooling fin and a cooling fin that is nearest to it.

12. Drive according to one of the preceding claims, characterized by the fact that The area covered by the upper part in the direction away from the lower part includes the area covered by the respective angle connector in this direction, in particular truly includes.

13. Drive according to one of the preceding claims, characterized by the fact that the area covered by the cooling fins in the direction away from the lower part includes the area covered by the respective angle connector in this direction, in particular includes the area actually covered.

14. Drive according to one of the preceding claims, characterized by the fact that The direction of actuation of the plug connection formed from the respective angle connector and the respective socket part is aligned perpendicular to the axis of rotation of the rotor.

15. Drive according to one of the preceding claims, characterized by the fact that The respective cable connected to the respective angled connector exits this angled connector in a direction that is parallel to the axis of rotation of the rotor.

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