| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pressing device capable of preventing a shock and an abrupt change of a behavior of an object when applying a pressing force via a magnetic fluid. <P>SOLUTION: The pressing device for generating the pressing force by transmitting thrust to a pressing member via the magnetic fluid of which the viscosity changes depending on a magnetic force is provided with a first chamber in which the magnetic fluid is filled and the magnetic fluid is pressured, a second chamber communicating with the first chamber via a conduit and filled with the magnetic fluid and capable of changing its volume depending on the pressure in it, a magnetic means for controlling a flow of the magnetic fluid via a conduit by bringing a magnetic field to the magnetic fluid and changing the viscosity of the magnetic fluid and a magnetic field control means for controlling the magnetic means for intermittently generating a magnetic field for magnetizing the magnetic fluid in a state that the inner pressure of either the first chamber or the second chamber is high, or for intermittently generating a magnetic field for magnetizing and a magnetic field for demagnetizing. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
