Rotor for an electrical machine
AssigneeDyson Technology Limited
InventorsDavid Ions, David Michael Jones
Life of this patent
Estimating the term…
Abstract
A rotor that includes a rotor core assembly secured to a shaft. The rotor core assembly includes a magnet and an end cap secured to an end of the magnet. Each of the magnet and the end cap has a bore into which the shaft extends. The end cap forms an interference fit with the shaft. The magnet forms a clearance fit with the shaft and an adhesive is located in the clearance between the magnet and the shaft. Additionally, a method of manufacturing the rotor. The method includes inserting the shaft into the bore of the end cap. An adhesive is then introduced into the bore of the magnet and the shaft is inserted into the bore of the magnet so as to cause adhesive to be drawn into the clearance defined between the magnet and the shaft.
Claims7
A method of manufacturing a rotor, the method comprising:
- providing a shaft;
- providing a rotor core assembly comprising a magnet and an end cap secured to an end of the magnet, each of the magnet and the end cap having a bore that is sized such that the shaft, when inserted into the bore, forms a clearance fit with the magnet and an interference fit with the end cap;
- inserting the shaft into the bore of the end cap;
- introducing an adhesive into the bore of the magnet;
- inserting the shaft into the bore of the magnet, the adhesive creating a wet seal between the shaft and the magnet such that adhesive is drawn into a clearance formed between the magnet and the shaft;
- and
- curing the adhesive.
Dependencies are inferred from the claim text.