| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmission system, preventing change in characteristics after adjustment work, suppressing increase in size, and easily adjusted.SOLUTION: The power transmission system 1 includes an outer rotary member 3, an inner rotary member 5, a clutch mechanism 7, and an electromagnet 9. The outer rotary member 3 further includes: a clutch housing 11 in which the clutch mechanism 7 is disposed; and a rotor 15 disposed around the electromagnet 9 to be rotatable integrally with the clutch housing 11, and having a magnetic flux permeation part 13 permeating a magnetic flux by excitation of the electromagnet 9. An air gap 19 of a minute gap is formed between the magnetic flux permeation part 13 and a core 17 of the electromagnet 9 in a radial direction so that the magnetic flux can permeate the air gap 19 between the magnetic flux permeation part 13 and the core 17. An adjustment region 23 adjusting a magnetic path formed by permeation of the magnetic flux in the magnetic flux permeation part 13 is disposed to a portion of the magnetic flux permeation part 13, which is radially opposed to the electromagnet 9 and is exposed to the outside. |
