| 摘要 |
PURPOSE: An electric connection unit is provided to extend the control range of the braking force at the maximum corresponding to the change in a specific range of excitation currents. CONSTITUTION: An electric connection unit is made up of: an annular magnetic driving substance(3) fixed to supporting plates(8,12) on an axis(4) to be integrated with the axis; a magnetic driven substance(10) having its outer circumference arranged against the inner circumference of the driving substance with a fine space; a magnetic particle(15) filling the fine space; an electromagnet unit(1) having an excitation coil(7), integrated with the driven substance through a magnetic bracket(6) and a non-magnetic connecting member(5) to be fixed to a machine frame; and the other magnetic bracket(2) integrated with the electromagnet unit to be supported to the axis through a bearing (13). The magnetic particle is magnetized if the magnetic force is communicated to the excitation coil as the driving substance is revolved by the axis. The driven substance is connected to the driving substance through the magnetic particle to prevent the driving substance from being revolved and the currents flowing in the excitation coil controls the braking force.
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