| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a compact vibrating device capable of generating a vibrational amplitude similar to that of a circular dust-screening filter even by a dust-screening member which is not in a circular shape. <P>SOLUTION: The vibrating device includes a dust-screening member which is shaped like a plate and has at least one side that is symmetric to an X-axis that is a given axis of symmetry, a vibrating member configured to vibrate the dust-screening member, and a drive means configured to drive the vibrating member to produce vibration Z(x, y), the vibration Z (x, y) being expressed as follows: Z(x, y)=Wmn(x, y)×cos(γ)+Wnm(x, y)×sin(γ) where Z(x, y) is vibration at a given point P (x, y) on the dust-screening member, and Wmn(x, y)=sin(n×π×x+π/2)×sin(m×π×y+π/2) and Wnm(x, y )=sin(m×π×x+π/2)×sin(n×π×y+π/2). A ratio between a first bending rigidity along the X-axis of the dust-screening member and vibrating member in the section orthogonal to the X-axis at the intersection of the X- and Y-axes and a second bending rigidity along the Y-axis of the dust-screening member and vibrating member in the section orthogonal to the Y-axis at the intersection is 0.4 or more, but less than 1.0. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
