Electric motor with improved assembly

Abstract

The present invention relates to an electric motor comprising a rotor and a stator, wherein the stator comprises a plurality of coils interconnected with an electronic substrate within a sealed region, and the electronic substrate is housed in a compartment separated from both the coils and the rotor of the stator by a lateral partition or lateral member, wherein the coils are mounted on an annular stator support, the stator support or lateral member has a front annular partition, the front annular partition separates a first space where the coils are located from a second space formed by a sealed chamber where the inter-coil connections are located, and pairs of coil wires pass radially through the front annular partition.

Claims

1. An electric motor comprising a rotor (200) and a stator (100) having a plurality of coils (130) interconnected with an electronic substrate (400) within a sealed area, wherein the electronic substrate (400) is housed in a compartment separated on one side from the coils of the stator and on the other side from the rotor by a lateral partition (151) or lateral member (300), The coil (130) is attached to the annular stator support (150). - The stator support (150) or the transverse member (300) has a front annular partition (160), - The front annular partition (160) separates the first space for housing the coil (130) from the second space which is formed by the sealing chamber (170) for housing the inter-coil connection portion. - An electric motor characterized in that the front annular partition (160) is radially traversed by the wire pair (131) of the coil (130).

2. The electric motor according to claim 1, characterized in that the front annular partition (160) is an extension of the stator support (150), and the front annular partition is closed by a lateral partition (151) to form the chamber (170).

3. The electric motor according to claim 1 or 2, characterized in that the annular partition (160) is associated with a deformable seal to provide radial sealing of the wire pair (131).

4. The electric motor according to any one of claims 1 to 3, wherein the annular partition (160) has two rings (161, 162) defining an annular groove (163) between them which houses the deformable seal, and the rings are provided with slots (164, 165) for the passage of the wire (131).

5. The deformable seal is a toroidal portion (180) having a lower part composed of two coaxial lips (181, 182) that cross the peripheral ring (162), and one of the lips (181, 182) is inserted into the annular groove (163), as described in claim 3 or 4.

6. The electric motor according to any one of claims 1 to 5, wherein the toroidal portion (180) also includes a recessed slot (183) that backs the side surface of the slot (165) of the ring (162), and the recessed slot (183) is narrower than the wire (131) so as to deform the toroidal portion (180) when the wire (131) is inserted.

7. The electric motor according to any one of claims 1 to 6, characterized in that the bottom of the slot (165) of the ring (162) has a projection (167) for forming a stopper while the wire (131) is inserted axially through the slots (164, 165).

8. An electric motor according to any one of claims 4 to 7, characterized in that at least one complementary annular seal (800) is associated with the deformable seal to close the passage of the wire (131).

9. The electric motor according to any one of claims 1 to 8, characterized in that the rotor (200) is housed inside the stator (100).

10. The electric motor according to any one of claims 1 to 9, characterized in that the stator support (150) is manufactured by overlaying the teeth (120) of the stator to form the coil body (140).

11. The electric motor according to any one of claims 1 to 10, characterized in that the coil (130) is manufactured by directly winding the wire around the coil body (140) of the stator support (150).

12. The electric motor according to any one of claims 1 to 11, characterized in that the magnetic material of the stator (100) consists of the assembly of the teeth (120) having a stator yoke (110), and the entire assembly is fixed by the stator support (150).

13. The electric motor according to any one of claims 1 to 9, characterized in that the stator is housed inside the rotor.

14. A method for manufacturing an electric motor according to claim 11, characterized in that all coils (130) are manufactured sequentially without interruption of the wire (131) between two coils (130).

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