Motor

Abstract

The utility model relates to a motor, which is provided with a stator shell with a through opening, a retaining device is arranged in the opening, the retaining device is at least partially surrounded by filler, and a plurality of wires pass through a through notch of the retaining device and are at least partially surrounded by the filler.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of motor, with the stator shell with through opening. BACKGROUND

[0002] It is known that motor has terminal box. SUMMARY

[0003] Therefore, the purpose of the utility model is that motor operates with improved safety.

[0004] According to the utility model, the purpose is achieved by the motor according to the following features.

[0005] In the motor with the stator shell with through opening, the important feature of the utility model is that retaining device is provided in the opening, the retaining device is at least partially surrounded by filler / infusion material, wherein a plurality of electric wires are guided through the through gap of the retaining device and at least partially surrounded by the filler.

[0006] Here the advantage is that a plurality of electric wires are guided by the retaining device before infusion of filler and are retained here in such a way as to be as parallel as possible to the tabs of the retaining device. After infusion, these electric wires are fixed in the area of the retaining device and are sufficiently spaced apart from each other. Therefore, the insulation spacing is maintained and safety is improved. In addition, the interior space area of the terminal box is separated from the interior space area of the stator. Therefore, the respective propagation of explosion waves is prevented.

[0007] In an advantageous design, the opening is closed by means of the filler, in particular airtight. Here the advantage is that the propagation of the explosion front is prevented.

[0008] In an advantageous design, the retaining device is produced as a plastic injection-molded part or assembled from a plurality of plastic injection-molded parts. Here the advantage is that a cost-advantageous production can be achieved.

[0009] In an advantageous design, the retaining device has a first disc, a second disc and a tab, wherein the first disc is connected to the second disc via the tab. Here the advantage is that a plurality of electric wires are guided through the gap of the discs and thus extend parallel to the tab in the intermediate area between the discs. Therefore, the insulation spacing is maintained. The tab defines the spacing of the two discs from each other.

[0010] In an advantageous design, the first disc has a plurality of through gaps through which the electric wires protrude. Here the advantage is that a plurality of electric wires are spaced apart from each other according to the hole pattern of the first disc (i.e. the pattern formed by the shape and position of all gaps), and thus the insulation spacing is maintained.

[0011] In an advantageous design, the second disk has a plurality of through-going recesses through which the electrical lines extend. This has the advantage that the electrical lines are spaced apart from one another according to the hole pattern of the second disk and thus remain insulated.

[0012] In an advantageous design, the hole pattern of the through-going recesses of the first disk is identical to the hole pattern of the through-going recesses of the second disk. This has the advantage that the electrical lines extend parallel to one another.

[0013] In an advantageous design, the through-going recesses of the first disk have a greater net inner diameter than the further through-going recesses of the first disk. This has the advantage that strong current lines and weak current lines can be used as electrical lines, in particular with respectively different conductor cross sections.

[0014] In an advantageous design, the first disk is arranged parallel to, in particular spaced apart from, the second disk.

[0015] In an advantageous design, the disk axis of the first disk is parallel to the disk axis of the second disk. This has the advantage that the electrical lines are spaced apart from one another and extend parallel to one another, in particular in the region arranged between the disks.

[0016] In an advantageous design, the tabs extend parallel to the respective section of the respective electrical line arranged between the first disk and the second disk. This has the advantage that the insulation spacing between the electrical lines is maintained.

[0017] In an advantageous design, the first disk has a through-going filling hole having a net inner diameter which is greater than the net inner diameter of the recesses of the first disk. This has the advantage that the filling hole can be arranged in the center of the first disk and / or arranged centrally in the first disk and thus a uniform filling with filler can be achieved.

[0018] In an advantageous design, the first disk has a cylindrical outer contour. This has the advantage that simple production can be achieved and the opening can be filled to the greatest extent possible.

[0019] In an advantageous design, the second disk has a cylindrical outer contour. This has the advantage that simple production can be achieved and the opening can be filled to the greatest extent possible.

[0020] In an advantageous design, the electrical lines are at least partially surrounded by the filler in the region between the first disk and the second disk. This has the advantage that the electrical lines can be secured by the filler.

[0021] In an advantageous design, the stator housing has a thread formed in the opening, which is in particular filled with the filler. The advantage here is that the filler is reliably retained in the opening and cannot be pressed out by the pressure difference between the interior space region of the terminal box and the interior space region of the stator. Since the hardened filler is retained not only materially but also positively on the thread. Thereby, the filler can be retained even in the event of a material lock failure.

[0022] In an advantageous design, the filler has a helical, radially protruding protrusion with respect to the central axis of the opening through the stator housing. The advantage here is that the filler is reliably retained in the opening and cannot be pressed out by the pressure difference between the interior space region of the terminal box and the interior space region of the stator. Since the hardened filler is retained not only materially but also positively on the thread. Thereby, the filler can be retained even in the event of a material lock failure.

[0023] In an advantageous design, the electrical lines comprise supply lines for the stator winding of the electric machine and supply lines for an electromagnetically actuatable brake of the electric machine and / or supply lines for a fan motor of the electric machine. The advantage here is that the electrical lines can achieve the electrical supply through the plug formed by the filler, which prevents the spread of the explosion front, which is received in the opening. Here, the plug additionally also contains the retaining device.

[0024] The utility model is not limited to the above-mentioned feature combinations. For the person skilled in the art, especially from the purpose proposed and / or by comparing with the prior art, other reasonable combination possibilities of the above-mentioned feature combinations and / or single above-mentioned features and / or the features explained below and / or the features of the drawings can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model will now be explained in detail by means of the schematic drawings:

[0026] Figure 1 A longitudinal sectional view shows an electric machine according to the utility model, wherein a retaining device 1 filled with a filler 2 separates the interior space of a terminal box of the electric machine from the interior space of a stator of the electric machine.

[0027] Figure 2 An oblique view shows the retaining device 1.

[0028] Figure 3 An oblique view shows the retaining device 1 filled with the filler 2.

[0029] Figure 4 The area shown in Fig. 1 is shown in exploded view. Figure 3

[0030] LIST OF REFERENCE SIGNS

[0031] 1 retaining device​

[0032] 2. Packing

[0033] 3. Bearing cover

[0034] 4. Stator housing

[0035] 20 First Disc

[0036] 21 stitching

[0037] 22 Second disc

[0038] 23 Gap

[0039] 24 Filling Holes

[0040] 25 gaps

[0041] 30 wires Detailed Implementation

[0042] As shown in the attached figure, the motor has a can-shaped stator housing 4, which is closed by a cover-shaped bearing cover 3.

[0043] An axially penetrating hole is provided at the bottom of the tank-shaped stator housing 4, through which the rotor shaft of the motor extends. A stator lamination assembly is received within the stator housing 4, and the stator windings of the motor are housed within this assembly. A bearing flange is fixed to the axial end of the stator housing opposite to the stator windings, and this bearing flange receives a bearing that rotatably supports the rotor shaft.

[0044] The bearing cover 3 is arranged on the axially opposite end of the stator housing 4 away from the through hole and is connected to the stator housing. The bearing cover 3 covers the opening of the stator housing 4 and also receives the bearing of the rotor shaft, for rotatably supporting the rotor shaft of the motor.

[0045] The through opening on the side of the stator housing 4 allows the wire 30 to pass from the internal space of the stator into the internal space of the junction box located on the outside of the stator housing.

[0046] Here, a retaining device 1 is arranged in the opening of the stator housing 4. This retaining device is used to guide the wire 30 and is cast encapsulated by the filler 2.

[0047] The packing 2 thus airtightly seals the opening, thereby separating the internal space of the junction box from the internal space of the stator. Therefore, the explosion front cannot propagate through the opening, in particular.

[0048] The holding device 1 has a first disk 20 and a second disk 22 spaced apart from the first disk, wherein a plurality of, particularly two tabs 21 connect the two disks 20, 22 to each other.

[0049] The disks are parallel to one another. The webs 21 extend parallel to the electrical lines 30, i.e. in particular parallel to the disk axis.

[0050] The first disk 20 has a plurality of through-going recesses 25 through which the plurality of electrical lines 30 passes. Correspondingly, the second disk 22 has a plurality of through-going recesses 23 through which the plurality of electrical lines 30 passes.

[0051] The first disk 20 has a further through-going recess which serves as a filling aperture 24 for the filling compound 2.

[0052] Prior to the filling of the filling compound 2, the holding device 1 holds and guides the electrical lines 30 in a direction parallel to the disk axis. After the hardening of the filling compound 2, the electrical lines 30 are fixed in the filling compound 2. Thus, the electrical lines 30 are held spaced apart from one another by the holding device 1 and / or by the filling compound 2.

[0053] In an embodiment in which the radial outer contour of the two disks 20, 22 is implemented as a cylinder, the disk axis of the first disk 20 is coaxial with the axis of rotational symmetry of the first disk 20, in particular with the cylinder axis. The disk axis of the second disk 22 is coaxial with the disk axis of the first disk 20.

[0054] The holding device 1 is preferably made of plastic, in particular configured as a one-piece plastic injection-molded part or assembled from a plurality of plastic injection-molded parts.

[0055] Both the holding device 1 and the filling compound 2 contribute to the insulation strength.

[0056] In particular, the opening of the stator housing 4 is covered with respect to the surroundings by a terminal box which is assembled from a terminal box lower part and a terminal box upper part which is arranged thereon, wherein the terminal box lower part is connected directly with the stator housing or with the stator housing via an intermediate plate arranged between the terminal box lower part and the stator housing.

[0057] The hole pattern of the recesses 25 of the first disk 20 is identical to the hole pattern of the recesses 23 of the second disk 22, in particular wherein the two hole patterns are implemented identically to one another.

[0058] Preferably, the first disk 20 has further recesses which have a smaller net inner diameter compared to the recesses 25.

[0059] In other embodiments according to the application, the holding device 1 is made of metal, wherein, however, the spacing of the electrical lines 30 should also be suitably selected.

Claims

1. An electric motor having a stator housing with a through opening, Its features are, A retaining device is provided in the opening, and the retaining device is at least partially surrounded by packing. Multiple wires pass through the through-hole of the retaining device and are at least partially surrounded by filler.

2. The motor according to claim 1, Its features are, The opening is sealed airtightly with the help of packing.

3. The motor according to claim 1 or 2, Its features are, The retaining device is made of plastic injection molded parts or assembled from multiple plastic injection molded parts.

4. The motor according to claim 1 or 2, Its features are, The holding device has a first disk, a second disk, and a receiving plate. The first and second platters are connected via splicing.

5. The motor according to claim 4, Its features are, The first disc has multiple through-holes through which the wires pass. And / or, The second reel has multiple through-holes through which the wires pass.

6. The motor according to claim 5, Its features are, The through-hole pattern of the first disc is the same as the through-hole pattern of the second disc.

7. The motor according to claim 5, Its features are, The net inner diameter of the through-hole in the first disc is larger than the net inner diameter of the other through-hole in the first disc.

8. The motor according to claim 4, Its features are, The first and second disks are arranged parallel to each other and spaced apart. And / or the axis of the first platter is parallel to the axis of the second platter.

9. The motor according to claim 4, Its features are, The connectors and corresponding wires are arranged in parallel to the corresponding sections between the first and second platters.

10. The motor according to claim 5, Its features are, The first disk has a through filling hole, the net diameter of which is larger than the net diameter of the notch on the first disk.

11. The motor according to claim 4, Its features The first plate has a cylindrical outer contour. And / or, The second disc has a cylindrical outer contour.

12. The motor according to claim 4, Its features are, The wire is at least partially surrounded by filler in the area located between the first and second platters.

13. The motor according to claim 1 or 2, Its features are, The stator housing has threads formed in the opening, which are filled with packing.

14. The motor according to claim 1 or 2, Its features are, The packing has a spiral protrusion that projects radially with reference to the central axis of the opening that penetrates the stator housing.

15. The motor according to claim 1 or 2, Its features are, The wires include power supply lines for the stator windings of the motor, power supply lines for the electromagnetically operable brakes of the motor, and / or power supply lines for the fan motor of the motor.

Images