| 摘要 |
While such drive system of prior art is suitable for back-and-forth linear movement or rotational movement so far as it is not expected to obtain a large drive force, it impossible for such system of prior art to obtain a desired large drive force when such system of prior art is used for the purpose of generating a large torque. In view of the problem as has been described above, it is a principal object of the present invention to provide an electromagnetic drive system improved to solve the aforementioned problem. The object set forth above is achieved by a magnetic force intensifying drive system arranged so that polarities of at least one of a movable magnet 6 and stationary magnets 4, 5 may be inverted to achieve continuous rotary movement or back-and-forth movement of the movable magnet 6 relatively to the stationary magnets 4, 5, characterized in that the movable magnet 6 or the stationary magnets 4, 5 is or are provided with permanent magnets 16, 17 serving for intensification of magnetic force. |
