Rotational-linear motion converter
US9742258B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2014 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Mar 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/031
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotational-linear motion converter includes a cylindrical magnet rotor, a linear rail, a teeth row, and a magnet row. The magnet rotor includes a magnet row magnetized in a radial direction of the magnet rotor. The rail includes a plurality of projecting portions and recessed portions. The teeth row includes teeth and allows a magnetic flux flowing from the magnet row of the magnet rotor to pass between the magnet rotor and the rail. The magnet row includes magnets and is magnetized in an extending direction of the rail in order to align the magnetic flux flowing from the magnet row of the magnet rotor toward the projecting portions and the recessed portions of the rail. In the magnet row magnetized in the extending direction of the rail, the same polarity faces of adjacent magnets oppose each other in the extending direction of the rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.