| 摘要 |
A linear motor is provided in which, even when the total length of the linear motor is large, the movable element is smaller and lighter without the use of additional magnets, and which further has a cooling mechanism. This linear motor is provided with a stator (2) and a movable element (1), and the stator (2) has two plate sections (an upper plate section (21) and a lower plate section (22)) which are magnetically coupled and opposite of each other, the movement region of the movable element (1) being therebetween. On each of the facing surfaces of said two plate sections (21, 22), multiple teeth (21a, 22a) are arranged in a row in the movement direction of the movable element (1) such that the teeth (21a) on one plate section (21) and the teeth (22a) on the other plate section (22) are staggered. The movable element (1) is configured such that multiple magnets (1c, 1d) and multiple yokes (1b) are arranged alternately within a coil (1a) along the movement direction, the magnets (1c, 1d) that are adjacent with a yoke (1b) interposed therebetween are magnetized in opposite directions to each other, and further, and the movable element (1) comprises a cooling unit (a cooling pipe (11)) which cools the coil (1a). |
