Drive, in particular an inverter motor

Abstract

The drive has a junction box, which has a lower part and an upper part placed on the lower part, wherein the lower part has an opening, wherein threaded bores are introduced into the lower part, wherein the opening is covered by the upper part placed on the lower part and a panel, in particular a cover part, wherein the panel and the upper part are pressed onto the lower part by screws screwed into the first of the threaded bores, wherein the hole pattern formed by the threaded bores has a discrete rotational symmetry.

Description

[0001] Drive, especially inverter motor

[0002] Description:

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

[0004] It is generally known that a drive as an inverter motor has an electric motor in which an inverter that electrically supplies the electric motor is integrated.

[0005] From DE 102022 110763 A1, a vehicle assembly with a pressure equalization element is known as the closest prior art.

[0006] From DE 102012002087 A1 a device with a sheet metal package and receiving part is known.

[0007] From DE 102006041 562 A1, an actuating device for an internal combustion engine is known.

[0008] The invention is therefore based on the objective of designing a drive that can be adapted to requirements.

[0009] According to the invention, the problem is solved in the drive according to the features specified in claim 1.

[0010] Important features of the invention in the drive, in particular the inverter motor, are that the drive has a terminal box which has a lower part and an upper part mounted on the lower part,

[0011] the lower part has an opening,

[0012] where threaded holes are incorporated into the lower part,

[0013] wherein the opening is covered by the upper part placed on the lower part and a cover, in particular a cover part,

[0014] ISI \ EIDOPAT 19.02.2026, wherein the cover and the upper part are pressed against the lower part by screws screwed into the first of the threaded holes, in particular by the screw heads of these screws,

[0015] wherein the hole pattern formed by the threaded holes has a discrete rotational symmetry, in particular remaining unchanged when rotated by 180° about an axis of rotation.

[0016] A key advantage is that the cover and the top part can be attached to the base in different positions using the screws. This allows for quick and easy positioning to suit specific requirements.

[0017] In an advantageous embodiment, the threaded bores are identical to each other and / or the thread diameter and pitch of the threaded bores are identical. An advantage of this is that the mounting of the cover and the upper part can be carried out in various positions.

[0018] In an advantageous embodiment, the axis of rotation, in particular the axis of rotation corresponding to the rotational symmetry, is aligned in the normal direction to the plane receiving the hole pattern. It is advantageous that the arrangement of the aperture and the upper part is interchangeable, and in particular, remains unchanged within the plane with respect to a rotation corresponding to the rotational symmetry.

[0019] In an advantageous embodiment, the axis of rotation, in particular the axis of rotation corresponding to the rotational symmetry, is aligned parallel to the bore axis of the mutually parallel bore axes of the threaded bores. It is advantageous that the arrangement of the aperture and the upper part is interchangeable, and in particular, remains unchanged within the plane with respect to a rotation corresponding to the rotational symmetry.

[0020] In an advantageous embodiment, first threaded holes of the hole pattern are arranged at the corners of a first rectangle and second threaded holes are arranged at the corners of a second rectangle, wherein the centers of gravity of the two rectangles coincide, in particular wherein the center of gravity, in particular the midpoint, of the first rectangle is the center of gravity, in particular the midpoint, of the second rectangle.

[0021] In particular, the corners of the second rectangle are arranged on two parallel sides of the first rectangle. An advantage of this is that 180° symmetry of the hole pattern can be achieved and the aperture can be positioned interchangeably with the upper part. The long side of each rectangle is oriented either parallel to the axial direction or perpendicular to the axial direction.

[0022] In an advantageous embodiment, the aperture is arranged axially in front of the upper part or axially behind the upper part. The advantage here is that different positioning options are possible.

[0023] In an advantageous embodiment, the upper part has excellent cooling fins extending into the surrounding area.

[0024] In particular, a connector is mounted on the circuit board in the lower part, which is inserted into a mating connector located and secured in the upper part. An advantage of this is that efficient cooling of electronic components located inside the terminal box can be achieved.

[0025] In an advantageous embodiment, the circuit board

[0026] a first connector part, especially for supplying an electrical power line, is assembled and

[0027] a data interface designed as a connector as well as

[0028] a second connector part, especially for routing the electrical supply line,

[0029] wherein the first and second connector parts protrude through respective recesses in the cover plate and the connector is covered by a locking screw screwed into a recess in the cover plate, particularly towards the area surrounding the drive. An advantage of this is that the cover plate, together with the upper and lower parts, encloses the interior of the terminal box, and the connectors can be actuated from the outside by mating connector parts.

[0030] In an advantageous embodiment, the lower part has a circumferential wall area on which thickenings are formed, into which threaded bores are provided.

[0031] the screw heads of the screws screwed into the threaded holes press the upper part and / or the cover towards the lower part,

[0032] In particular, the thickenings are spaced apart from each other. This has the advantage of enabling a stable and durable connection.

[0033] In an advantageous embodiment, the circuit board has inwardly directed recesses into which thickenings of the base project, which are formed on a wall area, particularly a circumferential, and especially a continuous, circumferential area. It is advantageous that the circuit board is received in the base without play and with a positive fit.

[0034] In an advantageous embodiment, the aperture has a flat base area,

[0035] in particular wherein the normal direction of the flat base area is oriented perpendicular to the direction of the axis of rotation of the rotor of the electric motor of the drive,

[0036] where a first back area is molded onto the base area,

[0037] In particular, the first back section is designed as a flat area and is oriented perpendicular to the base. An advantage of this design is the provision of a rigidly molded support area on which the upper part rests.

[0038] In an advantageous embodiment, a second back area is spaced apart from the first back area.

[0039] where a support area connects the first back section to the second back section. In particular, the first back section is aligned parallel to the second back section. An advantage of this is that the support area is reinforced by both the first and second back sections.

[0040] In an advantageous design, the upper part rests on the support area,

[0041] wherein a flat gasket of the upper part rests against a gasket arranged at the bearing area, in particular an injection-molded gasket,

[0042] In particular, a seal is arranged between the cover plate resting on the base plate and the base plate, especially one that is injection-molded onto the cover plate. It is advantageous that the interior of the junction box is tightly sealed against the environment.

[0043] In an advantageous embodiment, the flat gasket of the upper part is arranged continuously around the edge of the upper part facing the lower part and the cover. An advantage of this is that a high degree of protection can be achieved.

[0044] In an advantageous embodiment, first stiffening ribs, particularly on the inside of the panel, adjoin the base area and the first back area. It is advantageous that the contact area is stiffened and rigidly connected to the base area.

[0045] In an advantageous embodiment, second stiffening ribs are adjacent to and / or integrally formed, particularly on the inside of the panel, at the contact area and at the first and second back sections. It is advantageous that the contact area is stiffened and rigidly connected to the base area.

[0046] In an advantageous embodiment, the second stiffening ribs form a zigzag structure. An advantage of this is that the contact area is rigidly connected to the back areas. In particular, the second stiffening ribs follow a geometric pattern of lines bent at alternating angles.

[0047] In an advantageous embodiment, the second stiffening ribs are neither parallel nor perpendicular to the base area, the bearing area, nor the first or second back area, and in particular have an angle between 0° and 90°, especially between 10° and 80°. The advantage here is that high stiffness can be achieved, and thus the bearing area is stiffened by the two back areas. Further advantages will become apparent 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 illustration:

[0048] Figure 1 shows a drive according to the invention, in particular an inverter motor, with a terminal box, on the lower part 7 of which a top part 6 and a cover 1, in particular a cover part, are mounted, in an oblique view.

[0049] In Figure 2, aperture 1 and upper part 6 are arranged in reverse order.

[0050] Figure 3 shows an oblique view of the lower part 7.

[0051] Figure 4 shows an oblique view of the lower part 7 with the aperture 1 attached.

[0052] Figure 5 shows a longitudinal section through the connection box in the area of ​​aperture 1.

[0053] Figure 6 shows aperture 1 in oblique view from a first viewing direction.

[0054] Figure 7 shows aperture 1 in oblique view from a second viewing direction.

[0055] Figure 8 shows another drive in oblique view, in which the aperture 71 is not arranged axially behind the upper part 76, but laterally, i.e. in a transverse direction.

[0056] As shown in the figures, the drive, in particular the inverter motor, has an electric motor which has a terminal box formed from the trough-shaped lower part 7, the top of which is covered by the upper part 6 and the aperture 1, which is arranged in the axial direction in front of the upper part 6.

[0057] The upper part 6 has excellent cooling fins on its side facing away from the electric motor, which serve to dissipate waste heat from the electronic components arranged in the terminal box.

[0058] The lower part contains a printed circuit board 31 populated with electronic components. For backlash-free mounting, the lower part 7 has a circumferential wall area with inwardly directed projections 30 on its inner side, which extend into corresponding recesses, in particular indentations.

[0059] Thus, the circuit board 31 can be securely fastened in the lower part 7 in a twist-proof manner.

[0060] Threaded holes are provided in thickenings of the circumferential wall area of ​​the lower part 7, into which screws can be screwed that press the upper part and / or the cover 1 against the lower part 7.

[0061] The circuit board 31, which is housed in the lower part, has recesses, particularly inwardly directed ones, into which the thickenings project. Thus, the circuit board 31 can be arranged in the lower part 7 in a form-fitting manner, particularly without play.

[0062] The hole pattern formed by the threaded bores is designed such that either the aperture 1 is arranged axially in front of the upper part 6 or, in particular by a rotation by 180°, the aperture 1 is arranged axially behind the upper part 6.

[0063] The hole pattern is preferably configured such that four threaded holes are arranged at the corners of a first rectangle and four further threaded holes are arranged at the corners of a second rectangle, the second rectangle being centered within the first rectangle. In particular, the corners of the second rectangle are located on two mutually parallel sides of the first rectangle. The center of gravity of both rectangles preferably falls on a single point.

[0064] The upper part 6 is attached to the lower part 7 preferably with four screws, while the cover 1 is attached to the lower part 7 only with two screws.

[0065] The circuit board is equipped with a connector part 2 for supplying a power line and a data interface 3, also designed as a connector part, which is covered from the environment by a locking screw 3 screwed into the cover 1. A connector part 4 serves as the output of a power line, with the power line looped through the terminal box. In this way, several such inverter motors can be electrically supplied in series from a single power line. The cover 1 has continuous recesses through which either the connector part 2 or 4 protrudes, allowing a corresponding mating connector part to be inserted into the connector part 2 or 4.

[0066] The aperture 1 has a flat base area 57, wherein a first back area 50 adjoins the side of the base area facing the upper part 6, which is arranged at an angle to the base area 57 and is reinforced by means of stiffening ribs 51, which are formed both on the base area 57 and on the first back area 50.

[0067] A support area 58 is attached to the second back section 50, against which an edge area of ​​the upper part 6 rests. The support area 58 is aligned parallel to the base section 57 and has a seal 54 arranged between the upper part 6 and the support area 58.

[0068] A flat gasket 53 is injection-molded onto the edge area and also onto the remaining edge of the upper part 6 facing the lower part 7, which rests on the gasket 54 of the support area 58.

[0069] A second back area 55 is also molded onto the support area 58, which is aligned parallel to the first back area 50.

[0070] Second stiffening ribs 56 are integrally formed on both the first back section 50 and the second back section 55. Preferably, the stiffening ribs 56 form a zigzag arrangement, in particular, they run according to a geometric pattern of lines bent at alternating angles. In particular, each of the stiffening ribs 56 is neither parallel nor perpendicular to the respective first stiffening rib 51, nor to the first back section 50, nor to the second back section 55.

[0071] In this way, the cover 1, which is attached to the lower part with only two screws, functions

[0072] The upper part 6 rests on the support area 58 of the aperture 1. The connection between the upper part 7 and the aperture 1 can be achieved with a high degree of protection, in particular by means of the seal 54 of the aperture 1, which is molded onto the support area 58, and the flat seal 53 of the upper part 6, and can be made sealed. Thus, the aperture 1 complements the supporting edge area of ​​the lower part 7, on which the upper part 6 rests. The aperture 1 is preferably made of plastic, in particular as an injection-molded part.

[0073] In further embodiments according to the invention, the aperture 1 is made of metal.

[0074] As shown in Figure 7, in another drive, the aperture 71 is not arranged axially in front of or behind the upper part 75, but laterally, i.e., in the transverse direction to the axial direction in front of or behind the upper part 75. The drilling pattern formed on the lower part 7 is designed accordingly.

[0075] The circuit board includes a connector part 72, in particular for the connection of the looped-through supply line, and another connector functioning as a data interface, as well as a connector part 74 covered by a locking screw 73, in particular for the connection of the supply line. Reference numeral list

[0076] 1 Aperture, in particular cover part

[0077] 2 Connector part, especially for supply line

[0078] 3. Sealing screw, especially for covering a data interface. 4. Connector part, especially for wiring.

[0079] 5 Display area

[0080] 6. Top part of the junction box

[0081] 7 Lower part of the junction box

[0082] 30 inward-facing projection

[0083] 31 circuit board

[0084] 32 Data interface

[0085] 50 first back area

[0086] 51 Stiffening rib

[0087] 53 Flat gasket, injection molded, in particular around the edge of the upper part 6 54 Gasket, in particular arranged at the bearing area 58

[0088] 55 second back area

[0089] 56 second stiffening ribs

[0090] 57 Basic area, in particular

[0091] 58 print run

[0092] 70 Lower part of the junction box

[0093] 71 Aperture, in particular cover part

[0094] 72 Connector part, especially for supply line

[0095] 73 Sealing screw, especially for covering a data interface 74 Connector part, especially for derivation

[0096] 75 Top part of the junction box

Claims

Patent claims:

1. Drive, in particular inverter motor, wherein the drive has a junction box which has a lower part and an upper part mounted on the lower part, the lower part has an opening, where threaded holes are incorporated into the lower part, characterized by the fact that the opening is covered by the upper part placed on the lower part and a cover, in particular a cover part, wherein the cover and the upper part are pressed against the lower part by screws screwed into the first of the threaded holes, in particular by the screw heads of these screws, wherein the hole pattern formed by the threaded bores exhibits a discrete rotational symmetry, in particular remaining unchanged upon rotation by 180° about an axis of rotation.

2. Drive according to claim 1 , characterized by the fact that the threaded holes are identical to each other and / or the thread diameter and pitch are identical.

3. Drive according to one of the preceding claims, characterized by the fact that the axis of rotation, in particular the axis of rotation belonging to rotational symmetry, is aligned in the normal direction to the plane receiving the hole pattern and / or that the axis of rotation, in particular the axis of rotation belonging to the rotational symmetry, is aligned parallel to the bore axis of the mutually parallel bore axes of the threaded bores.

4. Drive according to one of the preceding claims, characterized by the fact that The first threaded holes of the hole pattern are arranged at the corners of a first rectangle, and the second threaded holes are arranged at the corners of a second rectangle. wherein the centroids of the two rectangles coincide, in particular wherein the centroid, in particular the midpoint, of the first rectangle is the centroid, in particular the midpoint, of the second rectangle, in particular wherein the corners of the second rectangle are arranged on two sides of the first rectangle that are aligned parallel to each other.

5. Drive according to one of the preceding claims, characterized by the fact that the aperture is arranged axially in front of the upper part or axially behind the upper part.- 14- 6. Drive according to one of the preceding claims, characterized by the fact that the upper part has excellent cooling fins in the area surrounding the upper part, in particular wherein a connector is mounted on the circuit board received in the lower part, which is inserted into a mating connector which is arranged and fastened in the upper part.

7. Drive according to one of the preceding claims, characterized by the fact that on the circuit board a first connector part, especially for supplying an electrical power line, is equipped and a data interface designed as a connector as well as a second connector part, especially for routing the electrical supply line, wherein the first and second connector parts protrude through a respective recess in the cover and the connector is covered by a locking screw screwed into a recess in the cover, particularly towards the vicinity of the drive.

8. Drive according to one of the preceding claims, characterized by the fact that the lower part has a circumferential wall area on which thickenings are formed, into which threaded holes are inserted, the screw heads of the screws screwed into the threaded holes press the upper part and / or the cover towards the lower part, in particular wherein the thickenings are spaced apart from each other.- 15 - 9. Drive according to one of the preceding claims, characterized by the fact that the circuit board has inwardly directed recesses into which thickenings of the lower part protrude, which are formed on a, in particular circumferential, in particular continuously circumferential wall area.

10. Drive according to one of the preceding claims, characterized by the fact that the aperture has a flat base area, in particular wherein the normal direction of the flat base area is oriented perpendicular to the direction of the axis of rotation of the rotor of the electric motor of the drive, where a first back area is molded onto the base area, in particular where the first back area is designed as a flat area and is oriented perpendicular to the base area.

11. Drive according to one of the preceding claims, characterized by the fact that a second back area is spaced apart from the first back area, in particular and aligned parallel to it, where a support area connects the first back area with the second back area.

12. Drive according to one of the preceding claims, characterized by the fact that the upper part rests on the support area, wherein a flat gasket of the upper part rests against a gasket arranged at the bearing area, in particular an injection-molded gasket, in particular wherein a seal is arranged between the aperture resting on the lower part and the lower part, in particular which is injection-molded onto the aperture.- 16 - 13. Drive according to one of the preceding claims, characterized by the fact that The flat gasket of the upper part is arranged on the edge of the upper part facing the lower part and the cover, in particular continuously around the entire circumference.

14. Drive according to one of the preceding claims, characterized by the fact that first stiffening ribs, especially on the inside of the aperture, at the base area and at the first back area, are adjacent to and / or molded on, and / or that second stiffening ribs, especially on the inside of the panel, at the contact area and at the first back area as well as the second back area, are adjacent to and / or molded onto it.

15. Drive according to one of the preceding claims, characterized by the fact that The second stiffening ribs form a zigzag structure, in particular, they run according to a geometric pattern of lines bent at alternating inward and outward angles. and / or that the second stiffening ribs are neither parallel nor perpendicular to the base area, the support area, nor the first or second back area, and in particular have an angle between 0° and 90°, especially between 10° and 80°.

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