Device for guiding a set of electrical wires for electric motor rotor

Patent metadata

Field	Value
Publication number	US-9712027-B2
Application number	US-201214363582-A
Country	US
Kind code	B2
Filing date	Nov 22, 2012
Priority date	Dec 8, 2011
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A guiding device for coiling electrically conducting wires around an electrically conducting block of a rotor of an electric motor including a shaft extending axially in the rotor, the electrically conducting block including at least four notches for receiving wires. The guiding device includes at least two branches extending radially away from the shaft and disposed at 90° to one another, the branches being connected by an elastic linking mechanism.

First claim

The invention claimed is:

1. A device for guiding a winding of electrically conductive wires around an electrically conductive block of a rotor of an electric motor, including a shaft extending axially in the rotor, the electrically conductive block including at least four receiving notches for receiving the wires, the device comprising:
at least two branches extending radially away from the shaft and disposed at 90° to one another, the branches being connected by an elastic linking means, and
wherein each branch includes at least two sets of guide grooves configured to cooperate with the receiving notches of the conductive block.

2. The guide device as claimed in claim 1 , wherein the elastic linking means has a rounded shape.

3. The guide device as claimed in claim 2 , wherein the rounded shape is an omega.

4. The guide device as claimed in claim 1 , wherein each branch comprises a main portion for receiving a set of wires and that is delimited radially by two shoulders present at respective ends of each branch, each main portion configured to cooperate with a receiving notch and including the two sets of guide grooves.

5. The guide device as claimed in claim 1 , wherein each branch comprises at least two positioning means projecting towards the conductive block and configured to cooperate with a plurality of holes formed in the conductive block.

6. The guide device as claimed in claim 5 , wherein the holes have a circular, oblong, or teardrop shape.

7. The guide device as claimed in claim 5 , comprising four branches.

8. The guide device as claimed in claim 7 , wherein the four branches are symmetrical with respect to an axis of symmetry of the rotor.

9. The guide device as claimed in claim 7 , wherein each adjacent elastic linking means is connected by a rounded portion delimiting a central portion through which the shaft of the rotor can pass.

10. The guide device as claimed in claim 9 , wherein the rounded portion has an internal radius of at least 35 mm.

11. A rotor of an electric motor comprising:
a shaft extending axially in the rotor;
an electrically conductive block extending radially away from the shaft of the rotor; and
a device according to claim 1 for guiding electrically conductive wires around the block.

Assignees

• Renault Sas

Inventors

• Birolleau Damien
• Bruyere Nicolas
• Orval Patrick
• Formosa Denis

Classifications

• H02K15/09 Primary

  by laying conductors into slotted rotors · CPC title

• Y10T29/53143

  Motor or generator · CPC title

• H02K3/48

  in slots · CPC title

• H02K3/34

  between conductors or between conductor and core, e.g. slot insulation · CPC title

• H02K3/527 Primary

  applicable to rotors only · CPC title