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.
Claims13
A rotor comprising a rotor core assembly secured to a shaft, wherein the rotor core assembly comprises 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, and wherein the end cap is formed of plastic.
A rotor comprising a rotor core assembly secured to a shaft, the rotor core assembly comprising a magnet, a first end cap secured to an end of the magnet, a second end cap secured to an opposite end of the magnet, a sleeve that surrounds the magnet and the end caps, the sleeve forming a clearance fit with the magnet and an interference fit with each of the end caps, and an adhesive located in the clearance between the magnet and the sleeve, wherein the magnet and the end caps each have a bore into which the shaft extends, the end caps form 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, and wherein the end cap is formed of plastic.
Dependencies are inferred from the claim text.