| 摘要 |
The invention relates to a permanent magnet coupling for the synchronous transmission of torque, comprising a first member (1) having permanent magnets (4a, 4b) and a second member (2), the members being designed as inner rotor and outer rotors and separated by an air gap (3) extending between the members (1, 2), wherein the members (1, 2) are coupled to enable a synchronous movement by forces generated by the permanent magnets (4a, 4b) by the interaction with the second member (2), wherein the first member (1) comprises a first group of permanent magnets (4a) having magnetizing directions parallel to the air gap (3) and a second group of permanent magnets (4b) having magnetizing directions perpendicular to the air gap (3), wherein the permanent magnets (4a, 4b) of the first group and of the second group of the first member (1) are alternately arranged in the circumferential direction, and wherein, as viewed in the circumferential direction, the consecutive permanent magnets (4a) of the first group and the consecutive permanent magnets (4b) of the second group have opposing magnetizing directions, respectively. According to the invention, the permanent magnets (4b) of the second group, starting from the air gap (3), are arranged offset toward the back with respect to the permanent magnet (4a) of the first group such that permanent magnet-free intermediate spaces (5), in particular made of soft iron, remain between the air gap (3) and the permanent magnet (4b) of the second group, said intermediate spaces being delimited laterally by the permanent magnets (4a) of the first group. |
| 主权项 |
1. A permanent-magnet coupling for synchronously transmitting torque, the coupling comprising:
a first member rotatable about an axis and having a first array of rectangularly parallelepipedal first permanent magnets and a second array of rectangularly parallelepipedal second permanent magnets; a rotatable second member rotatable about the axis, nested with the first member, and separated by an axially extending air gap therefrom, whereby for synchronous rotation the members are coupled by forces that are generated by the permanent magnets in interaction with the second member, the first permanent magnets having magnetization directions running parallel to the air gap and the second array of second permanent magnets having magnetization directions running perpendicular to the air gap, the first permanent magnets of the first array and the second permanent magnets of the second array of the first member alternating angularly with adjacent first permanent magnets of the first array as well as adjacent second permanent magnets of the second array having opposing magnetization directions, the second permanent magnets of the second array starting from the air gap being set radially back with respect to the first permanent magnets of the first array so as to form between the air gap and each of the second permanent magnets of the second array a spaces free of permanent magnets, angularly delimited by the first permanent magnets of the first array, and extending a full radial height of the first permanent magnets. |
