MAGNETIC DEVICE FOR TRANSFER OF FORCES

摘要

The invention provides a magnetic device arranged to transfer a force between two mechanical elements upon relative movement of these elements, e.g. the device may be used in a gear box etc. The device includes two mechanical elements (209, 210) with respective set of magnets connected thereto in order to magnetically transfer a force between the two mechanical elements (209, 210). A third mechanical element (204) is arranged to functionally interact with the two mechanical elements (209, 210) to cause a cycloid movement between the two set of magnets, during operation of the magnetic device. In preferred gear box embodiment, the two set of magnets are arranged in respective circular patterns are operate in a cyclo gear configuration, i.e. with the first mechanical element (209) with magnets is connected to an input shaft (201), and it (209) is arranged eccentrically inside the second mechanical element (210) with magnets, wherein the second mechanical element (210) forms an output shaft. The third mechanical element (204) serves to rotationally fix the first mechanical element (209) so that it performs a combined orbital and rotational relative to the second mechanical element (210). Due to the magnetic transfer of forces this embodiment is suited for applications where media separation is crucial. In another embodiment the first mechanical element has two sets of magnets arranged on each side, and these set of magnets are arranged to perform magnetic interaction with respective set of magnets on an output shaft and a fixed part, e.g. a housing, and wherein the first mechanical element is connected to an input shaft such that it performs a combined rotational and axial movement.