Vibrating device and imaging apparatus using the same
View Patent ↗A vibrating device includes a transducer including a plate-like dust-proof member and a vibration-applying member configured to vibrate the dust-proof member, a holder arranged a predetermined space apart from the dust-proof member, a sealing member configured to seal a space between the dust-proof member and the holder, and a pressing supporting member having formed therein pressing sections configured to press the dust-proof member, supporting sections for maintaining supporting of the dust-proof member or the vibration-applying member when an external force is applied to the dust-proof member, and fixing sections with respect to the holder. The pressing sections are respectively provided in positions symmetrical to each other across an imaginary axis passing a center of gravity of the transducer. Rigidity of the supporting sections is set higher than rigidity of the pressing sections.
1. A vibrating device comprising:
a transducer including a plate-like dust-proof member and a vibration-applying member arranged along an end side outer circumferential portion of the dust-proof member and configured to vibrate the dust-proof member;
a holder arranged a predetermined space apart from the dust-proof member;
a sealing member configured to seal the predetermined space between the dust-proof member and the holder; and
a pressing supporting member having formed therein pressing sections configured to elastically press the dust-proof member toward the sealing member, supporting sections for maintaining supporting of the dust-proof member or the vibration-applying member when an external force is applied to the dust-proof member in a direction opposite to a direction in which the dust-proof member is pressed by an elastic force of the pressing sections, and fixing sections configured to fix the pressing supporting member to the holder, wherein
the pressing sections are respectively provided in positions symmetrical to each other across an imaginary axis passing a center of gravity of the transducer, and rigidity of the supporting sections is set higher than rigidity of the pressing sections.
2. The vibrating device according to claim 1 , wherein
the dust-proof member has at least one side bisected by an arbitrary axis of symmetry, and
the vibration-applying member is arranged in a position bisected by the arbitrary axis of symmetry on the dust-proof member.
3. The vibrating device according to claim 1 , wherein positions of the pressing sections formed in the pressing supporting member are positions where a rotation moment of the imaginary axis passing the center of gravity of the transducer is balanced.
4. The vibrating device according to claim 2 , wherein positions of the pressing sections formed in the pressing supporting member are positions where a rotation moment of the imaginary axis passing the center of gravity of the transducer is balanced.
5. The vibrating device according to claim 1 , wherein the supporting sections have a spring constant 250 times or more as large as a spring constant of the pressing sections.
6. The vibrating device according to claim 1 , wherein
the pressing sections and the supporting sections are formed in a frame-like shape as a whole, and the fixing sections are extended from a sidewall section and fixed by screws or elastically fixed to the holder, the sidewall section extending from one end portion of the frame-like shape while tilting at a predetermined angle.
7. The vibrating device according to claim 6 , wherein the elastic fixing of the fixing sections and the holder is performed by a convex portion provided in one of the fixing sections and the holder and a concave portion provided in the other of the fixing sections and the holder.
8. The vibrating device according to claim 1 , wherein an elastic receiving member made of a vibration absorptive material and configured to receive distal end portions of the pressing sections is arranged between the dust-proof member and the pressing sections.
9. An imaging apparatus comprising:
a dust-proof member in which a transparent region having a predetermined spread in a radial direction from a center of the region is formed;
a holder including an image pickup device configured to convert an object light beam made incident on the transparent region into image data or an image pickup device configured to convert image data into an object light beam and make the object light beam incident on the transparent region; and
a vibrating device, wherein
the vibrating device includes:
a transducer including a plate-like dust-proof member and a vibration-applying member arranged along an end side outer circumferential portion of the dust-proof member and configured to vibrate the dust-proof member;
a holder arranged a predetermined space apart from the dust-proof member;
a sealing member configured to seal the predetermined space between the dust-proof member and the holder; and
a pressing supporting member having formed therein pressing sections configured to elastically press the dust-proof member toward the sealing member, supporting sections for maintaining supporting of the dust-proof member or the vibration-applying member when an external force is applied to the dust-proof member in a direction opposite to a direction in which the dust-proof member is pressed by an elastic force of the pressing sections, and fixing sections configured to fix the pressing supporting member to the holder,
the pressing sections are respectively provided in positions symmetrical to each other across an imaginary axis passing a center of gravity of the transducer, and
rigidity of the supporting sections is set higher than rigidity of the pressing sections.